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‎.gitignore‎

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i### Gradle template
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.gradle/
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build/
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### Java template
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*.class
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.settings
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.classpath
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.project
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# Package Files #
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*.war
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*.ear
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# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
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hs_err_pid*
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### JetBrains template
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# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio
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## File-based project format:
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*.ipr
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*.iws
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*.iml
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## Directory-based project format:
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.idea/
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## Plugin-specific files:
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# IntelliJ
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/out/
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.app-src/tmp/
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bower_components/
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dist/
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node_modules/
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.tmp/
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*.log

‎Dockerfile‎

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FROM tomcat:8.0.20-jre8
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# Dummy text to test
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COPY target/java-web-app*.war /usr/local/tomcat/webapps/java-web-app.war

‎jenkins_ci_cd_docker_pipeline‎

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node{
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stage('SCM Checkout'){
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git url: 'https://github.com/devopstrainingbanglore/gradle-web-app.git',branch: 'master'
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}
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stage(" Maven Clean Package"){
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def mavenHome = tool name: "Maven-3.5.6", type: "maven"
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def mavenCMD = "${mavenHome}/bin/mvn"
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sh "${mavenCMD} clean package"
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}
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stage('Build Docker Image'){
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sh 'docker build -t dockerhandson/java-web-app .'
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}
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stage('Push Docker Image'){
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withCredentials([string(credentialsId: 'Docker_Hub_Pwd', variable: 'Docker_Hub_Pwd')]) {
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sh "docker login -u dockerhandson -p ${Docker_Hub_Pwd}"
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}
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sh 'docker push dockerhandson/java-web-app'
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}
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stage('Run Docker Image In Dev Server'){
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def dockerRun = ' docker run -d -p 8080:8080 --name java-web-app dockerhandson/java-web-app'
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sshagent(['DOCKER_SERVER']) {
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sh 'ssh -o StrictHostKeyChecking=no ubuntu@172.31.20.72 docker stop java-web-app || true'
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sh 'ssh ubuntu@172.31.20.72 docker rm java-web-app || true'
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sh 'ssh ubuntu@172.31.20.72 docker rmi -f $(docker images -q) || true'
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sh "ssh ubuntu@172.31.20.72 ${dockerRun}"
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}
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}
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}

‎pom.xml‎

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.mt</groupId>
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<artifactId>java-web-app</artifactId>
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<packaging>war</packaging>
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<version>1.0</version>
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<name>Maven Web Application</name>
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<url>http://mithuntechnologies.com</url>
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<description>Maven Web Project</description>
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<organization>
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<name>Mithun Technologies</name>
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<url>http://mithuntechnologies.com/</url>
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</organization>
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<properties>
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<!-- versions -->
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<spring.version>5.0.2.RELEASE</spring.version>
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<junit.version>4.12</junit.version>
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<log4j.version>1.2.17</log4j.version>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
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</properties>
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<dependencies>
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<!-- test dependencies -->
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>${junit.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-test</artifactId>
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<version>3.2.3.RELEASE</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.mockito</groupId>
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<artifactId>mockito-core</artifactId>
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<version>1.9.5</version>
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<scope>test</scope>
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</dependency>
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<!-- compile dependencies -->
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-core</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-web</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-webmvc</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-context</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<!-- provided dependencies -->
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<dependency>
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<groupId>javax.servlet</groupId>
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<artifactId>javax.servlet-api</artifactId>
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<version>3.1.0</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>javax.servlet</groupId>
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<artifactId>jstl</artifactId>
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<version>1.2</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/ch.qos.logback/logback-classic -->
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<dependency>
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<groupId>ch.qos.logback</groupId>
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<artifactId>logback-classic</artifactId>
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<version>1.2.3</version>
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</dependency>
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</dependencies>
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<!-- <distributionManagement>
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<repository>
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<id>nexus</id>
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<name>Mithun Technologies Releases Nexus Repository</name>
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<url>http://13.235.8.113:8081/repository/flipkart-release/</url>
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</repository>
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<snapshotRepository>
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<id>nexus</id>
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<name>Mithun Technologies Snapshot Nexus Repository </name>
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<url>http://13.235.8.113:8081/repository/flipkart-snapshot/</url>
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</snapshotRepository>
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</distributionManagement> -->
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>2.5.1</version>
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<inherited>true</inherited>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

‎src/main/java/com/rst/helloworld/service/HelloWorldService.java‎

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package com.rst.helloworld.service;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.stereotype.Service;
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import org.springframework.util.StringUtils;
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@Service
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public class HelloWorldService {
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private static final Logger logger = LoggerFactory.getLogger(HelloWorldService.class);
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public String getDesc() {
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logger.debug("getDesc() is executed!");
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return "Maven + Spring MVC + Jenkins + Docker Hello World Example";
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}
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public String getTitle(String name) {
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logger.debug("getTitle() is executed! $name : {}", name);
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if(StringUtils.isEmpty(name)){
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return "Hello World";
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}else{
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return "Hello " + name;
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}
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}
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}

‎src/main/java/com/rst/helloworld/web/WelcomeController.java‎

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package com.rst.helloworld.web;
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import java.util.Map;
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import com.rst.helloworld.service.HelloWorldService;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Controller;
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import org.springframework.web.bind.annotation.PathVariable;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestMethod;
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import org.springframework.web.servlet.ModelAndView;
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@Controller
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public class WelcomeController {
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private final Logger logger = LoggerFactory.getLogger(WelcomeController.class);
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private final HelloWorldService helloWorldService;
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@Autowired
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public WelcomeController(HelloWorldService helloWorldService) {
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this.helloWorldService = helloWorldService;
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}
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@RequestMapping(value = "/", method = RequestMethod.GET)
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public String index(Map<String, Object> model) {
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logger.debug("index() is executed!");
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model.put("title", helloWorldService.getTitle(""));
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model.put("msg", helloWorldService.getDesc());
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return "index";
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}
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@RequestMapping(value = "/hello/{name:.+}", method = RequestMethod.GET)
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public ModelAndView hello(@PathVariable("name") String name) {
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logger.debug("hello() is executed - $name {}", name);
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ModelAndView model = new ModelAndView();
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model.setViewName("index");
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model.addObject("title", helloWorldService.getTitle(name));
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model.addObject("msg", helloWorldService.getDesc());
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return model;
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}
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}

‎src/main/resources/logback.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<configuration>
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<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
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<layout class="ch.qos.logback.classic.PatternLayout">
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<Pattern>
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%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36} - %msg%n
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</Pattern>
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</layout>
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</appender>
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<logger name="org.springframework" level="debug" additivity="false">
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<appender-ref ref="STDOUT" />
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</logger>
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<logger name="com.rst.helloworld" level="debug" additivity="false">
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<appender-ref ref="STDOUT" />
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</logger>
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<root level="debug">
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<appender-ref ref="STDOUT" />
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</root>
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</configuration>

‎src/main/webapp/WEB-INF/spring-core-config.xml‎

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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:context="http://www.springframework.org/schema/context"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:mvc="http://www.springframework.org/schema/mvc"
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xsi:schemaLocation="
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http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans.xsd
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http://www.springframework.org/schema/context
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http://www.springframework.org/schema/context/spring-context.xsd ">
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<context:component-scan base-package="com.rst.helloworld.service" />
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</beans>

‎src/main/webapp/WEB-INF/spring-mvc-config.xml‎

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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:context="http://www.springframework.org/schema/context"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:mvc="http://www.springframework.org/schema/mvc"
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xsi:schemaLocation="
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http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans.xsd
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http://www.springframework.org/schema/mvc
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http://www.springframework.org/schema/mvc/spring-mvc.xsd
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http://www.springframework.org/schema/context
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http://www.springframework.org/schema/context/spring-context.xsd ">
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<context:component-scan base-package="com.rst.helloworld.web" />
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<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
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<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
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<property name="prefix" value="/WEB-INF/views/jsp/" />
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<property name="suffix" value=".jsp" />
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</bean>
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<mvc:resources mapping="/resources/**" location="/resources/" />
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<mvc:annotation-driven />
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</beans>

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