diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/.idea/backendDevTest.iml b/.idea/backendDevTest.iml
new file mode 100644
index 00000000..d6ebd480
--- /dev/null
+++ b/.idea/backendDevTest.iml
@@ -0,0 +1,9 @@
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 00000000..2b6035b0
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,22 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/encodings.xml b/.idea/encodings.xml
new file mode 100644
index 00000000..bbb515b6
--- /dev/null
+++ b/.idea/encodings.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml
new file mode 100644
index 00000000..712ab9d9
--- /dev/null
+++ b/.idea/jarRepositories.xml
@@ -0,0 +1,20 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 00000000..8130ddda
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,14 @@
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 00000000..59be48c8
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 00000000..35eb1ddf
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/JavaSpringBoot/demo/.gitattributes b/JavaSpringBoot/demo/.gitattributes
new file mode 100644
index 00000000..3b41682a
--- /dev/null
+++ b/JavaSpringBoot/demo/.gitattributes
@@ -0,0 +1,2 @@
+/mvnw text eol=lf
+*.cmd text eol=crlf
diff --git a/JavaSpringBoot/demo/.gitignore b/JavaSpringBoot/demo/.gitignore
new file mode 100644
index 00000000..667aaef0
--- /dev/null
+++ b/JavaSpringBoot/demo/.gitignore
@@ -0,0 +1,33 @@
+HELP.md
+target/
+.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
diff --git a/JavaSpringBoot/demo/.mvn/wrapper/maven-wrapper.properties b/JavaSpringBoot/demo/.mvn/wrapper/maven-wrapper.properties
new file mode 100644
index 00000000..c0bcafe9
--- /dev/null
+++ b/JavaSpringBoot/demo/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1,3 @@
+wrapperVersion=3.3.4
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.11/apache-maven-3.9.11-bin.zip
diff --git a/JavaSpringBoot/demo/mvnw b/JavaSpringBoot/demo/mvnw
new file mode 100644
index 00000000..bd8896bf
--- /dev/null
+++ b/JavaSpringBoot/demo/mvnw
@@ -0,0 +1,295 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.3.4
+#
+# Optional ENV vars
+# -----------------
+# JAVA_HOME - location of a JDK home dir, required when download maven via java source
+# MVNW_REPOURL - repo url base for downloading maven distribution
+# MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+# MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
+# ----------------------------------------------------------------------------
+
+set -euf
+[ "${MVNW_VERBOSE-}" != debug ] || set -x
+
+# OS specific support.
+native_path() { printf %s\\n "$1"; }
+case "$(uname)" in
+CYGWIN* | MINGW*)
+ [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")"
+ native_path() { cygpath --path --windows "$1"; }
+ ;;
+esac
+
+# set JAVACMD and JAVACCMD
+set_java_home() {
+ # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
+ if [ -n "${JAVA_HOME-}" ]; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ]; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD="$JAVA_HOME/jre/sh/java"
+ JAVACCMD="$JAVA_HOME/jre/sh/javac"
+ else
+ JAVACMD="$JAVA_HOME/bin/java"
+ JAVACCMD="$JAVA_HOME/bin/javac"
+
+ if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then
+ echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2
+ echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2
+ return 1
+ fi
+ fi
+ else
+ JAVACMD="$(
+ 'set' +e
+ 'unset' -f command 2>/dev/null
+ 'command' -v java
+ )" || :
+ JAVACCMD="$(
+ 'set' +e
+ 'unset' -f command 2>/dev/null
+ 'command' -v javac
+ )" || :
+
+ if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then
+ echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2
+ return 1
+ fi
+ fi
+}
+
+# hash string like Java String::hashCode
+hash_string() {
+ str="${1:-}" h=0
+ while [ -n "$str" ]; do
+ char="${str%"${str#?}"}"
+ h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296))
+ str="${str#?}"
+ done
+ printf %x\\n $h
+}
+
+verbose() { :; }
+[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; }
+
+die() {
+ printf %s\\n "$1" >&2
+ exit 1
+}
+
+trim() {
+ # MWRAPPER-139:
+ # Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds.
+ # Needed for removing poorly interpreted newline sequences when running in more
+ # exotic environments such as mingw bash on Windows.
+ printf "%s" "${1}" | tr -d '[:space:]'
+}
+
+scriptDir="$(dirname "$0")"
+scriptName="$(basename "$0")"
+
+# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
+while IFS="=" read -r key value; do
+ case "${key-}" in
+ distributionUrl) distributionUrl=$(trim "${value-}") ;;
+ distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;;
+ esac
+done <"$scriptDir/.mvn/wrapper/maven-wrapper.properties"
+[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+
+case "${distributionUrl##*/}" in
+maven-mvnd-*bin.*)
+ MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/
+ case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in
+ *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;;
+ :Darwin*x86_64) distributionPlatform=darwin-amd64 ;;
+ :Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
+ :Linux*x86_64*) distributionPlatform=linux-amd64 ;;
+ *)
+ echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
+ distributionPlatform=linux-amd64
+ ;;
+ esac
+ distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
+ ;;
+maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;
+*) MVN_CMD="mvn${scriptName#mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;;
+esac
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/
+[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}"
+distributionUrlName="${distributionUrl##*/}"
+distributionUrlNameMain="${distributionUrlName%.*}"
+distributionUrlNameMain="${distributionUrlNameMain%-bin}"
+MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}"
+MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")"
+
+exec_maven() {
+ unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || :
+ exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD"
+}
+
+if [ -d "$MAVEN_HOME" ]; then
+ verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+ exec_maven "$@"
+fi
+
+case "${distributionUrl-}" in
+*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;;
+*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;;
+esac
+
+# prepare tmp dir
+if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then
+ clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; }
+ trap clean HUP INT TERM EXIT
+else
+ die "cannot create temp dir"
+fi
+
+mkdir -p -- "${MAVEN_HOME%/*}"
+
+# Download and Install Apache Maven
+verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+verbose "Downloading from: $distributionUrl"
+verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+# select .zip or .tar.gz
+if ! command -v unzip >/dev/null; then
+ distributionUrl="${distributionUrl%.zip}.tar.gz"
+ distributionUrlName="${distributionUrl##*/}"
+fi
+
+# verbose opt
+__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR=''
+[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v
+
+# normalize http auth
+case "${MVNW_PASSWORD:+has-password}" in
+'') MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+esac
+
+if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then
+ verbose "Found wget ... using wget"
+ wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl"
+elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then
+ verbose "Found curl ... using curl"
+ curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl"
+elif set_java_home; then
+ verbose "Falling back to use Java to download"
+ javaSource="$TMP_DOWNLOAD_DIR/Downloader.java"
+ targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName"
+ cat >"$javaSource" <<-END
+ public class Downloader extends java.net.Authenticator
+ {
+ protected java.net.PasswordAuthentication getPasswordAuthentication()
+ {
+ return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() );
+ }
+ public static void main( String[] args ) throws Exception
+ {
+ setDefault( new Downloader() );
+ java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
+ }
+ }
+ END
+ # For Cygwin/MinGW, switch paths to Windows format before running javac and java
+ verbose " - Compiling Downloader.java ..."
+ "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java"
+ verbose " - Running Downloader.java ..."
+ "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")"
+fi
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+if [ -n "${distributionSha256Sum-}" ]; then
+ distributionSha256Result=false
+ if [ "$MVN_CMD" = mvnd.sh ]; then
+ echo "Checksum validation is not supported for maven-mvnd." >&2
+ echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+ exit 1
+ elif command -v sha256sum >/dev/null; then
+ if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c - >/dev/null 2>&1; then
+ distributionSha256Result=true
+ fi
+ elif command -v shasum >/dev/null; then
+ if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then
+ distributionSha256Result=true
+ fi
+ else
+ echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2
+ echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+ exit 1
+ fi
+ if [ $distributionSha256Result = false ]; then
+ echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2
+ echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2
+ exit 1
+ fi
+fi
+
+# unzip and move
+if command -v unzip >/dev/null; then
+ unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip"
+else
+ tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar"
+fi
+
+# Find the actual extracted directory name (handles snapshots where filename != directory name)
+actualDistributionDir=""
+
+# First try the expected directory name (for regular distributions)
+if [ -d "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" ]; then
+ if [ -f "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/bin/$MVN_CMD" ]; then
+ actualDistributionDir="$distributionUrlNameMain"
+ fi
+fi
+
+# If not found, search for any directory with the Maven executable (for snapshots)
+if [ -z "$actualDistributionDir" ]; then
+ # enable globbing to iterate over items
+ set +f
+ for dir in "$TMP_DOWNLOAD_DIR"/*; do
+ if [ -d "$dir" ]; then
+ if [ -f "$dir/bin/$MVN_CMD" ]; then
+ actualDistributionDir="$(basename "$dir")"
+ break
+ fi
+ fi
+ done
+ set -f
+fi
+
+if [ -z "$actualDistributionDir" ]; then
+ verbose "Contents of $TMP_DOWNLOAD_DIR:"
+ verbose "$(ls -la "$TMP_DOWNLOAD_DIR")"
+ die "Could not find Maven distribution directory in extracted archive"
+fi
+
+verbose "Found extracted Maven distribution directory: $actualDistributionDir"
+printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$actualDistributionDir/mvnw.url"
+mv -- "$TMP_DOWNLOAD_DIR/$actualDistributionDir" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME"
+
+clean || :
+exec_maven "$@"
diff --git a/JavaSpringBoot/demo/mvnw.cmd b/JavaSpringBoot/demo/mvnw.cmd
new file mode 100644
index 00000000..92450f93
--- /dev/null
+++ b/JavaSpringBoot/demo/mvnw.cmd
@@ -0,0 +1,189 @@
+<# : batch portion
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements. See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership. The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License. You may obtain a copy of the License at
+@REM
+@REM http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied. See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.3.4
+@REM
+@REM Optional ENV vars
+@REM MVNW_REPOURL - repo url base for downloading maven distribution
+@REM MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+@REM MVNW_VERBOSE - true: enable verbose log; others: silence the output
+@REM ----------------------------------------------------------------------------
+
+@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0)
+@SET __MVNW_CMD__=
+@SET __MVNW_ERROR__=
+@SET __MVNW_PSMODULEP_SAVE=%PSModulePath%
+@SET PSModulePath=
+@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @(
+ IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B)
+)
+@SET PSModulePath=%__MVNW_PSMODULEP_SAVE%
+@SET __MVNW_PSMODULEP_SAVE=
+@SET __MVNW_ARG0_NAME__=
+@SET MVNW_USERNAME=
+@SET MVNW_PASSWORD=
+@IF NOT "%__MVNW_CMD__%"=="" ("%__MVNW_CMD__%" %*)
+@echo Cannot start maven from wrapper >&2 && exit /b 1
+@GOTO :EOF
+: end batch / begin powershell #>
+
+$ErrorActionPreference = "Stop"
+if ($env:MVNW_VERBOSE -eq "true") {
+ $VerbosePreference = "Continue"
+}
+
+# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties
+$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl
+if (!$distributionUrl) {
+ Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+}
+
+switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) {
+ "maven-mvnd-*" {
+ $USE_MVND = $true
+ $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip"
+ $MVN_CMD = "mvnd.cmd"
+ break
+ }
+ default {
+ $USE_MVND = $false
+ $MVN_CMD = $script -replace '^mvnw','mvn'
+ break
+ }
+}
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/
+if ($env:MVNW_REPOURL) {
+ $MVNW_REPO_PATTERN = if ($USE_MVND -eq $False) { "/org/apache/maven/" } else { "/maven/mvnd/" }
+ $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace "^.*$MVNW_REPO_PATTERN",'')"
+}
+$distributionUrlName = $distributionUrl -replace '^.*/',''
+$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$',''
+
+$MAVEN_M2_PATH = "$HOME/.m2"
+if ($env:MAVEN_USER_HOME) {
+ $MAVEN_M2_PATH = "$env:MAVEN_USER_HOME"
+}
+
+if (-not (Test-Path -Path $MAVEN_M2_PATH)) {
+ New-Item -Path $MAVEN_M2_PATH -ItemType Directory | Out-Null
+}
+
+$MAVEN_WRAPPER_DISTS = $null
+if ((Get-Item $MAVEN_M2_PATH).Target[0] -eq $null) {
+ $MAVEN_WRAPPER_DISTS = "$MAVEN_M2_PATH/wrapper/dists"
+} else {
+ $MAVEN_WRAPPER_DISTS = (Get-Item $MAVEN_M2_PATH).Target[0] + "/wrapper/dists"
+}
+
+$MAVEN_HOME_PARENT = "$MAVEN_WRAPPER_DISTS/$distributionUrlNameMain"
+$MAVEN_HOME_NAME = ([System.Security.Cryptography.SHA256]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join ''
+$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME"
+
+if (Test-Path -Path "$MAVEN_HOME" -PathType Container) {
+ Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+ Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
+ exit $?
+}
+
+if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) {
+ Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl"
+}
+
+# prepare tmp dir
+$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile
+$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir"
+$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null
+trap {
+ if ($TMP_DOWNLOAD_DIR.Exists) {
+ try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+ catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+ }
+}
+
+New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null
+
+# Download and Install Apache Maven
+Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+Write-Verbose "Downloading from: $distributionUrl"
+Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+$webclient = New-Object System.Net.WebClient
+if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) {
+ $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD)
+}
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum
+if ($distributionSha256Sum) {
+ if ($USE_MVND) {
+ Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties."
+ }
+ Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash
+ if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) {
+ Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property."
+ }
+}
+
+# unzip and move
+Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null
+
+# Find the actual extracted directory name (handles snapshots where filename != directory name)
+$actualDistributionDir = ""
+
+# First try the expected directory name (for regular distributions)
+$expectedPath = Join-Path "$TMP_DOWNLOAD_DIR" "$distributionUrlNameMain"
+$expectedMvnPath = Join-Path "$expectedPath" "bin/$MVN_CMD"
+if ((Test-Path -Path $expectedPath -PathType Container) -and (Test-Path -Path $expectedMvnPath -PathType Leaf)) {
+ $actualDistributionDir = $distributionUrlNameMain
+}
+
+# If not found, search for any directory with the Maven executable (for snapshots)
+if (!$actualDistributionDir) {
+ Get-ChildItem -Path "$TMP_DOWNLOAD_DIR" -Directory | ForEach-Object {
+ $testPath = Join-Path $_.FullName "bin/$MVN_CMD"
+ if (Test-Path -Path $testPath -PathType Leaf) {
+ $actualDistributionDir = $_.Name
+ }
+ }
+}
+
+if (!$actualDistributionDir) {
+ Write-Error "Could not find Maven distribution directory in extracted archive"
+}
+
+Write-Verbose "Found extracted Maven distribution directory: $actualDistributionDir"
+Rename-Item -Path "$TMP_DOWNLOAD_DIR/$actualDistributionDir" -NewName $MAVEN_HOME_NAME | Out-Null
+try {
+ Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null
+} catch {
+ if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) {
+ Write-Error "fail to move MAVEN_HOME"
+ }
+} finally {
+ try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+ catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+}
+
+Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
diff --git a/JavaSpringBoot/demo/pom.xml b/JavaSpringBoot/demo/pom.xml
new file mode 100644
index 00000000..bf58ef6e
--- /dev/null
+++ b/JavaSpringBoot/demo/pom.xml
@@ -0,0 +1,94 @@
+
+
+ 4.0.0
+
+ org.springframework.boot
+ spring-boot-starter-parent
+ 3.5.7
+
+
+ com.example
+ demo
+ 0.0.1-SNAPSHOT
+ demo
+ Demo project for Spring Boot
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ 21
+
+
+
+ org.springframework.boot
+ spring-boot-starter-web
+
+
+ org.springframework.boot
+ spring-boot-starter-webflux
+
+
+
+ org.projectlombok
+ lombok
+ true
+
+
+ org.springframework.boot
+ spring-boot-starter-test
+ test
+
+
+ io.projectreactor
+ reactor-test
+ test
+
+
+
+
+ jakarta.validation
+ jakarta.validation-api
+
+
+
+
+
+
+ org.apache.maven.plugins
+ maven-compiler-plugin
+
+
+
+ org.projectlombok
+ lombok
+
+
+
+
+
+ org.springframework.boot
+ spring-boot-maven-plugin
+
+
+
+ org.projectlombok
+ lombok
+
+
+
+
+
+
+
+
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/DemoApplication.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/DemoApplication.java
new file mode 100644
index 00000000..64b538a1
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/DemoApplication.java
@@ -0,0 +1,13 @@
+package com.example.demo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class DemoApplication {
+
+ public static void main(String[] args) {
+ SpringApplication.run(DemoApplication.class, args);
+ }
+
+}
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/products/application/crud/getSimilar/GetSimilarProducts.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/application/crud/getSimilar/GetSimilarProducts.java
new file mode 100644
index 00000000..fdbb2753
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/application/crud/getSimilar/GetSimilarProducts.java
@@ -0,0 +1,10 @@
+package com.example.demo.products.application.crud.getSimilar;
+
+import com.example.demo.products.application.dto.ProductApplication;
+
+import java.util.List;
+
+public interface GetSimilarProducts {
+ List getSimilarProductsById(String productId);
+}
+
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/products/application/crud/getSimilar/GetSimilarProductsImp.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/application/crud/getSimilar/GetSimilarProductsImp.java
new file mode 100644
index 00000000..7f5a0875
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/application/crud/getSimilar/GetSimilarProductsImp.java
@@ -0,0 +1,66 @@
+package com.example.demo.products.application.crud.getSimilar;
+
+import com.example.demo.products.application.dto.ProductApplication;
+import com.example.demo.products.infrastructure.http_outputAdapter.ProductApiClient;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import reactor.core.publisher.Flux;
+
+import java.util.List;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class GetSimilarProductsImp implements GetSimilarProducts {
+
+ private final ProductApiClient productApiClient;
+
+ @Override
+ public List getSimilarProductsById(String productId) {
+ log.info("Fetching similar products for productId: {}", productId);
+
+ try {
+ //1 Obtener IDs de productos similares (bloqueando para simplificar)
+ //Spring WebFlux -> reactivo -> usa Mono -> necesario blokear
+ List similarIds = productApiClient.getSimilarProductIds(productId)
+ .block();
+
+ if (similarIds == null || similarIds.isEmpty()) {
+ log.info("No similar products found for productId: {}", productId);
+ return List.of();
+ }
+
+ log.debug("Found {} similar product IDs for productId: {}", similarIds.size(), productId);
+
+ // 2. Obtener detalles de cada producto en paralelo
+ Flux productsFlux = productApiClient.getProductDetails(similarIds);
+
+ // 3. Recopilar todos los productos (bloqueando para simplificar)
+ List products = productsFlux
+ .collectList()
+ .block();
+
+ if (products == null) {
+ log.warn("Failed to fetch product details for productId: {}", productId);
+ return List.of();
+ }
+
+ // 4. Filtrar productos nulos (por si algún producto falló)
+ List validProducts = products.stream()
+ .filter(product -> product != null)
+ .toList();
+
+ log.info("Successfully retrieved {} similar products for productId: {}",
+ validProducts.size(), productId);
+
+ // Los productos ya vienen ordenados por similitud según el mock server
+ return validProducts;
+
+ } catch (Exception e) {
+ log.error("Error retrieving similar products for productId: {}", productId, e);
+ throw new RuntimeException("Error retrieving similar products: " + e.getMessage(), e);
+ }
+ }
+}
+
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/products/application/dto/ProductApplication.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/application/dto/ProductApplication.java
new file mode 100644
index 00000000..e69c3c01
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/application/dto/ProductApplication.java
@@ -0,0 +1,17 @@
+package com.example.demo.products.application.dto;
+
+import lombok.*;
+
+@Getter
+@Setter
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@EqualsAndHashCode
+@ToString
+public class ProductApplication {
+ private String id;
+ private String name;
+ private Double price;
+ private Boolean availability;
+}
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/products/application/mapper/ProductMapperApplication.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/application/mapper/ProductMapperApplication.java
new file mode 100644
index 00000000..723770c1
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/application/mapper/ProductMapperApplication.java
@@ -0,0 +1,71 @@
+package com.example.demo.products.application.mapper;
+
+import com.example.demo.products.application.dto.ProductApplication;
+import com.example.demo.products.domain.dto.ProductDomain;
+import org.springframework.stereotype.Service;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+@Service
+public class ProductMapperApplication {
+
+ private static ProductMapperApplication instance;
+
+ private ProductMapperApplication(){}
+
+ public static ProductMapperApplication getInstance() {
+ if(instance == null) {
+ instance = new ProductMapperApplication();
+ }
+ return instance;
+ }
+
+ public ProductDomain applicationToDomain(ProductApplication application){
+ if(application==null) {return null;}
+
+ ProductDomain.ProductDomainBuilder builder = ProductDomain.builder();
+
+ builder.id(application.getId());
+ builder.name(application.getName());
+ builder.price(application.getPrice());
+ builder.availability(application.getAvailability());
+
+ return builder.build();
+ }
+
+ public ProductApplication domainToApplication(ProductDomain domain){
+ if(domain==null) {return null;}
+
+ ProductApplication.ProductApplicationBuilder builder = ProductApplication.builder();
+
+ builder.id(domain.getId());
+ builder.name(domain.getName());
+ builder.price(domain.getPrice());
+ builder.availability(domain.getAvailability());
+
+ return builder.build();
+ }
+
+ public List listDomainToApplicationList(List domainList) {
+ if(domainList == null) return Collections.emptyList();
+ return domainList.stream().map(this::domainToApplication).collect(Collectors.toList());
+ }
+
+ public List listApplicationToDomainList(List applicationList) {
+ if(applicationList == null) return Collections.emptyList();
+ return applicationList.stream().map(this::applicationToDomain).collect(Collectors.toList());
+ }
+
+ public Set setDomainToApplicationSet(Set domainSet) {
+ if(domainSet == null) return Collections.emptySet();
+ return domainSet.stream().map(this::domainToApplication).collect(Collectors.toSet());
+ }
+
+ public Set setApplicationToDomainSet(Set applicationSet) {
+ if(applicationSet == null) return Collections.emptySet();
+ return applicationSet.stream().map(this::applicationToDomain).collect(Collectors.toSet());
+ }
+}
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/products/domain/dto/ProductDomain.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/domain/dto/ProductDomain.java
new file mode 100644
index 00000000..ec8578cf
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/domain/dto/ProductDomain.java
@@ -0,0 +1,18 @@
+package com.example.demo.products.domain.dto;
+
+import lombok.*;
+
+@Getter
+@Setter
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@EqualsAndHashCode
+@ToString
+
+public class ProductDomain {
+ private String id;
+ private String name;
+ private Double price;
+ private Boolean availability;
+}
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/config/WebClientConfig.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/config/WebClientConfig.java
new file mode 100644
index 00000000..d9aaa1c8
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/config/WebClientConfig.java
@@ -0,0 +1,30 @@
+package com.example.demo.products.infrastructure.config;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.reactive.function.client.WebClient;
+
+@Configuration
+public class WebClientConfig {
+
+ @Value("${external.api.base-url}")
+ private String baseUrl;
+
+ @Value("${external.api.timeout.connect:2000}")
+ private int connectTimeout;
+
+ @Value("${external.api.timeout.read:5000}")
+ private int readTimeout;
+
+ @Bean
+ public WebClient webClient() {
+ return WebClient.builder()
+ .baseUrl(baseUrl)
+ .codecs(configurer -> configurer
+ .defaultCodecs()
+ .maxInMemorySize(1024 * 1024))
+ .build();
+ }
+}
+
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/controller_inputAdapter/ProductControllerImp.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/controller_inputAdapter/ProductControllerImp.java
new file mode 100644
index 00000000..6b9d5df9
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/controller_inputAdapter/ProductControllerImp.java
@@ -0,0 +1,39 @@
+package com.example.demo.products.infrastructure.controller_inputAdapter;
+
+import com.example.demo.products.application.crud.getSimilar.GetSimilarProducts;
+import com.example.demo.products.application.dto.ProductApplication;
+import com.example.demo.products.infrastructure.controller_inputPort.ProductController;
+import com.example.demo.shared.service.ResponseHandlerService;
+import com.example.demo.shared.valueObject.ResponseDTO;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/product")
+@CrossOrigin
+@Slf4j
+public class ProductControllerImp implements ProductController {
+
+ private final ResponseHandlerService responseHandler;
+ private final GetSimilarProducts getSimilarProducts;
+
+ @Autowired
+ public ProductControllerImp(
+ ResponseHandlerService responseHandler,
+ GetSimilarProducts getSimilarProducts){
+ this.responseHandler = responseHandler;
+ this.getSimilarProducts = getSimilarProducts;
+ }
+
+ @GetMapping("/{productId}/similar")
+ @Override
+ public ResponseDTO> getSimilarProducts(@PathVariable String productId) {
+ log.info("Received request for similar products of productId: {}", productId);
+ return responseHandler.execute("GET_SIMILAR_PRODUCTS",
+ () -> getSimilarProducts.getSimilarProductsById(productId));
+ }
+
+}
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/controller_inputPort/ProductController.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/controller_inputPort/ProductController.java
new file mode 100644
index 00000000..0e196f15
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/controller_inputPort/ProductController.java
@@ -0,0 +1,11 @@
+package com.example.demo.products.infrastructure.controller_inputPort;
+
+import com.example.demo.products.application.dto.ProductApplication;
+import com.example.demo.shared.valueObject.ResponseDTO;
+
+import java.util.List;
+
+public interface ProductController {
+
+ ResponseDTO> getSimilarProducts(String productId);
+}
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/entity/ProductEntity.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/entity/ProductEntity.java
new file mode 100644
index 00000000..5af04ef8
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/entity/ProductEntity.java
@@ -0,0 +1,43 @@
+package com.example.demo.products.infrastructure.entity;
+
+
+import jakarta.validation.constraints.DecimalMin;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+import jakarta.validation.constraints.Size;
+import lombok.*;
+
+@Getter
+@Setter
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@EqualsAndHashCode
+@ToString
+
+//@Entity
+//@Table(name="products", schema = "mydb")
+public class ProductEntity {
+
+ //@Id
+ @NotBlank(message = "ID is required and cannot be empty")
+ @Size(min = 1, message = "ID must have at least 1 character")
+ //@Column(unique = true, nullable = false, length = 255)
+ private String id;
+
+ @NotBlank(message = "Name is required and cannot be empty")
+ @Size(min = 1, message = "Name must have at least 1 character")
+ //@Column(nullable = false, length = 255)
+ private String name;
+
+ @NotNull(message = "Price is required")
+ @DecimalMin(value = "0.0", inclusive = true, message = "Price must be positive")
+ //@Column(nullable = false)
+ private Double price;
+
+ @NotNull(message = "Availability is required")
+ //@Column(nullable = false)
+ private Boolean availability;
+
+
+}
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/http_outputAdapter/ProductApiClient.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/http_outputAdapter/ProductApiClient.java
new file mode 100644
index 00000000..d7b59f9f
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/http_outputAdapter/ProductApiClient.java
@@ -0,0 +1,96 @@
+package com.example.demo.products.infrastructure.http_outputAdapter;
+
+import com.example.demo.products.application.dto.ProductApplication;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Component;
+import org.springframework.web.reactive.function.client.WebClient;
+import org.springframework.web.reactive.function.client.WebClientResponseException;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+import reactor.util.retry.Retry;
+
+import java.time.Duration;
+import java.util.List;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class ProductApiClient {
+
+ private final WebClient webClient;
+
+ @Value("${external.api.timeout.read:5000}")
+ private int readTimeout;
+
+
+ //Spring WebFlux -> reactivo -> usar Mono -> queremos 1 unico valor que es la lista
+ public Mono> getSimilarProductIds(String productId) {
+ log.debug("Fetching similar product IDs for productId: {}", productId);
+ return webClient.get()
+ .uri("/product/{productId}/similarids", productId)
+ .retrieve()
+ .bodyToFlux(String.class)
+ .collectList()
+ .timeout(Duration.ofMillis(readTimeout))
+ .retryWhen(Retry.backoff(2, Duration.ofMillis(100))
+ .filter(throwable -> {
+ if (throwable instanceof WebClientResponseException webClientError) {
+ return webClientError.getStatusCode().is5xxServerError();
+ }
+ return false;
+ })
+ .doBeforeRetry(retrySignal -> log.warn("Retrying request for similar IDs, productId: {}", productId)))
+ .doOnSuccess(ids -> log.debug("Successfully fetched {} similar product IDs for productId: {}", ids.size(), productId))
+ .doOnError(error -> log.error("Error fetching similar product IDs for productId: {}", productId, error))
+ .onErrorMap(this::mapToRuntimeException);
+ }
+
+ //Spring WebFlux -> reactivo -> usar Mono -> queremos 1 unico valor
+ public Mono getProductDetail(String productId) {
+ log.debug("Fetching product detail for productId: {}", productId);
+ return webClient.get()
+ .uri("/product/{productId}", productId)
+ .retrieve()
+ .bodyToMono(ProductApplication.class)
+ .timeout(Duration.ofMillis(readTimeout))
+ .retryWhen(Retry.backoff(2, Duration.ofMillis(100))
+ .filter(throwable -> {
+ if (throwable instanceof WebClientResponseException webClientError) {
+ return webClientError.getStatusCode().is5xxServerError();
+ }
+ return false;
+ })
+ .doBeforeRetry(retrySignal -> log.warn("Retrying request for product detail, productId: {}", productId)))
+ .doOnSuccess(product -> log.debug("Successfully fetched product detail for productId: {}", productId))
+ .doOnError(error -> log.error("Error fetching product detail for productId: {}", productId, error))
+ .onErrorMap(this::mapToRuntimeException);
+ }
+
+ //Spring WebFlux -> reactivo -> usar Flux -> queremos multiples valores distintos
+ public Flux getProductDetails(List productIds) {
+ log.debug("Fetching product details for {} products", productIds.size());
+ return Flux.fromIterable(productIds)
+ .flatMap(this::getProductDetail, 5) // Concurrencia de 5
+ .onErrorContinue((error, obj) -> log.warn("Failed to fetch product detail for: {}", obj, error));
+ }
+
+ //Centralizar logica para manejar excepciones
+ private Throwable mapToRuntimeException(Throwable error) {
+ if (error instanceof WebClientResponseException webClientError) {
+ if (webClientError.getStatusCode() == HttpStatus.NOT_FOUND) {
+ log.warn("Product not found in external API: {}", webClientError.getMessage());
+ return new RuntimeException("Product not found in external API: " + webClientError.getMessage());
+ }
+ return new RuntimeException("External API error: " + webClientError.getStatusCode(), error);
+ }
+ if (error instanceof java.util.concurrent.TimeoutException) {
+ log.warn("Timeout calling external API: {}", error.getMessage());
+ return new RuntimeException("External API timeout", error);
+ }
+ return new RuntimeException("Error calling external API", error);
+ }
+}
+
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/mapper/ProductMapperInfrastructure.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/mapper/ProductMapperInfrastructure.java
new file mode 100644
index 00000000..5247c165
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/products/infrastructure/mapper/ProductMapperInfrastructure.java
@@ -0,0 +1,72 @@
+package com.example.demo.products.infrastructure.mapper;
+
+import com.example.demo.products.application.dto.ProductApplication;
+import com.example.demo.products.infrastructure.entity.ProductEntity;
+import org.springframework.stereotype.Service;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+@Service
+public class ProductMapperInfrastructure {
+ private static ProductMapperInfrastructure instance;
+
+ private ProductMapperInfrastructure(){}
+
+ public static ProductMapperInfrastructure getInstance() {
+ if(instance == null) {
+ instance = new ProductMapperInfrastructure();
+ }
+ return instance;
+ }
+
+ public ProductApplication entityToApplication(ProductEntity entity){
+ if(entity==null) {return null;}
+
+ ProductApplication.ProductApplicationBuilder builder = ProductApplication.builder();
+
+ builder.id(entity.getId());
+ builder.name(entity.getName());
+ builder.price(entity.getPrice());
+ builder.availability(entity.getAvailability());
+
+ return builder.build();
+ }
+
+ public ProductEntity applicationToEntity(ProductApplication application){
+ if(application==null) {return null;}
+
+ ProductEntity.ProductEntityBuilder builder = ProductEntity.builder();
+
+ builder.id(application.getId());
+ builder.name(application.getName());
+ builder.price(application.getPrice());
+ builder.availability(application.getAvailability());
+
+ return builder.build();
+ }
+
+ public List listApplicationToEntityList(List applicationList) {
+ if(applicationList == null) return Collections.emptyList();
+ return applicationList.stream().map(this::applicationToEntity).collect(Collectors.toList());
+ }
+
+ public List listEntityToApplicationList(List entityList) {
+ if(entityList == null) return Collections.emptyList();
+ return entityList.stream().map(this::entityToApplication).collect(Collectors.toList());
+ }
+
+ public Set setApplicationToEntitySet(Set applicationSet) {
+ if(applicationSet == null) return Collections.emptySet();
+ return applicationSet.stream().map(this::applicationToEntity).collect(Collectors.toSet());
+ }
+
+ public Set setEntityToApplicationSet(Set entitySet) {
+ if(entitySet == null) return Collections.emptySet();
+ return entitySet.stream().map(this::entityToApplication).collect(Collectors.toSet());
+ }
+
+}
+
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/DateParserdFromDateToStringException.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/DateParserdFromDateToStringException.java
new file mode 100644
index 00000000..e4600a59
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/DateParserdFromDateToStringException.java
@@ -0,0 +1,9 @@
+package com.example.demo.shared.exceptions;
+
+import java.util.Date;
+
+public class DateParserdFromDateToStringException extends GenericException {
+ public DateParserdFromDateToStringException(Date date, String pattern){
+ super("Cannot parse " + date + ". format this date with this pattern: " + pattern);
+ }
+}
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/DateParserdFromStringToDateException.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/DateParserdFromStringToDateException.java
new file mode 100644
index 00000000..66049708
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/DateParserdFromStringToDateException.java
@@ -0,0 +1,7 @@
+package com.example.demo.shared.exceptions;
+
+public class DateParserdFromStringToDateException extends GenericException {
+ public DateParserdFromStringToDateException(String dateString, String pattern){
+ super("Cannot parse " + dateString + ". format this date with this pattern: " + pattern);
+ }
+}
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/ExceptionXAlreadyExistException.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/ExceptionXAlreadyExistException.java
new file mode 100644
index 00000000..2109aef3
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/ExceptionXAlreadyExistException.java
@@ -0,0 +1,10 @@
+package com.example.demo.shared.exceptions;
+
+import com.example.demo.shared.exceptions.GenericException;
+
+public class ExceptionXAlreadyExistException extends GenericException {
+ public ExceptionXAlreadyExistException(String msg){
+ super(msg + " already exist");
+ }
+}
+
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/ExceptionXNotExistException.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/ExceptionXNotExistException.java
new file mode 100644
index 00000000..c30471d1
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/ExceptionXNotExistException.java
@@ -0,0 +1,10 @@
+package com.example.demo.shared.exceptions;
+
+import com.example.demo.shared.exceptions.GenericException;
+
+public class ExceptionXNotExistException extends GenericException {
+ public ExceptionXNotExistException(String msg){
+ super(msg+" not exist");
+ }
+}
+
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/GenericException.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/GenericException.java
new file mode 100644
index 00000000..f0ba4b0a
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/GenericException.java
@@ -0,0 +1,53 @@
+package com.example.demo.shared.exceptions;
+
+import com.example.demo.shared.valueObject.I18nMessage;
+
+import java.util.*;
+
+public class GenericException extends RuntimeException {
+ private final List errorMessages = new ArrayList();
+
+ public GenericException(){
+ }
+
+ public GenericException(String key, Object... params){
+ super(key);
+ this.addError(key,params);
+ }
+
+ public GenericException(Throwable t, String key, Object... params){
+ super(key, t);
+ this.addError(key,params);
+ }
+
+ /** @deprecated **/
+ @Deprecated
+ public Map> getErrorMap(){
+ Map> map = new HashMap<>();
+ Iterator iterator = this.errorMessages.iterator();
+
+ while (iterator.hasNext()){
+ I18nMessage msg = (I18nMessage) iterator.next();
+ map.put(msg.getKey(), msg.getParams());
+ }
+
+ return map;
+ }
+
+ public void addErrors(Map> errorMap){
+ Iterator iterator = errorMap.entrySet().iterator();
+
+ while (iterator.hasNext()){
+ Map.Entry> e = (Map.Entry) iterator.next();
+ this.addError((String) e.getKey(), e.getValue());
+ }
+ }
+
+ public void addError(String key, Object... params){
+ this.errorMessages.add(new I18nMessage(key, Arrays.asList(params)));
+ }
+
+ public List getErrorMessages(){return this.errorMessages;}
+
+ public Boolean containsError(String key){return this.errorMessages.contains(new I18nMessage(key));}
+}
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/ModuleException.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/ModuleException.java
new file mode 100644
index 00000000..1ab71aab
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/exceptions/ModuleException.java
@@ -0,0 +1,10 @@
+package com.example.demo.shared.exceptions;
+
+public class ModuleException extends GenericException {
+ public ModuleException(){
+ }
+
+ public ModuleException(String key, Object... params){super(key,params);}
+
+ public ModuleException(Throwable t, String key, Object... params){super(key,params);}
+}
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/service/ResponseHandlerService.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/service/ResponseHandlerService.java
new file mode 100644
index 00000000..e236ea9a
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/service/ResponseHandlerService.java
@@ -0,0 +1,36 @@
+package com.example.demo.shared.service;
+
+import com.example.demo.shared.exceptions.GenericException;
+import com.example.demo.shared.valueObject.ResponseDTO;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+
+import java.util.function.Supplier;
+
+@Service
+@Slf4j
+public class ResponseHandlerService {
+
+ /**
+ * Ejecuta una acción y devuelve un ResponseDTO con manejo de excepciones y logging.
+ * @param action nombre de la acción (para logs e infoMessages)
+ * @param supplier lógica de negocio que devuelve datos
+ * @param tipo de dato de la respuesta
+ * @return ResponseDTO
+ */
+ public ResponseDTO execute(String action, Supplier supplier) {
+ ResponseDTO response = new ResponseDTO<>();
+ try {
+ T data = supplier.get();
+ response.setData(data);
+ response.addInfo(action + "_OK");
+ } catch (GenericException e) {
+ response.setErrorMessages(e.getErrorMessages());
+ log.warn("{} failed with business exception", action, e);
+ } catch (Exception e) {
+ response.addError(e.getMessage());
+ log.error("{} failed", action, e);
+ }
+ return response;
+ }
+}
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/valueObject/GenericDTO.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/valueObject/GenericDTO.java
new file mode 100644
index 00000000..0c569d61
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/valueObject/GenericDTO.java
@@ -0,0 +1,63 @@
+package com.example.demo.shared.valueObject;
+
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class GenericDTO implements Serializable {
+ protected List errorMessages = new ArrayList<>();
+ protected List warningMessages = new ArrayList<>();
+ protected List infoMessages = new ArrayList<>();
+
+ public GenericDTO() {
+ }
+
+ public void addInfo(String key, Object... params) {
+ this.infoMessages.add(new I18nMessage(key, Arrays.asList(params)));
+ }
+
+ public void addError(String key, Object... params) {
+ this.errorMessages.add(new I18nMessage(key, Arrays.asList(params)));
+ }
+
+ public void addWarning(String key, Object... params) {
+ this.warningMessages.add(new I18nMessage(key, Arrays.asList(params)));
+ }
+
+ public boolean hasErrors(){
+ return !this.errorMessages.isEmpty();
+ }
+
+ public List getErrorMessages() {
+ return errorMessages;
+ }
+
+ public void setErrorMessages(List errorMessages) {
+ this.errorMessages = errorMessages;
+ }
+
+ public List getWarningMessages() {
+ return warningMessages;
+ }
+
+ public void setWarningMessages(List warningMessages) {
+ this.warningMessages = warningMessages;
+ }
+
+ public List getInfoMessages() {
+ return infoMessages;
+ }
+
+ public void setInfoMessages(List infoMessages) {
+ this.infoMessages = infoMessages;
+ }
+
+ public boolean hasObjectNotFoundException(){
+ return this.getErrorMessages().stream().anyMatch((em) -> {
+ return em.getKey().equalsIgnoreCase("general.objectnotfound");
+ });
+ }
+
+}
diff --git a/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/valueObject/I18nMessage.java b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/valueObject/I18nMessage.java
new file mode 100644
index 00000000..06a31925
--- /dev/null
+++ b/JavaSpringBoot/demo/src/main/java/com/example/demo/shared/valueObject/I18nMessage.java
@@ -0,0 +1,80 @@
+package com.example.demo.shared.valueObject;
+
+import java.io.Serializable;
+import java.util.Collections;
+import java.util.List;
+
+public class I18nMessage implements Serializable {
+ private String key;
+ private List