chore: set up basic structure of the project

.gitignore

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+# Hidden file
+.*
+!.gitignore
+
+# Compiled class file
+*.class
+
+# Target Directory
+**/target/
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*

module-dao/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"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+
+  <parent>
+      <artifactId>webpage-update-subscribe</artifactId>
+      <groupId>com.codebelief.app</groupId>
+      <version>1.0-SNAPSHOT</version>
+  </parent>
+
+  <modelVersion>4.0.0</modelVersion>
+  <artifactId>module-dao</artifactId>
+  <name>DAO Module</name>
+  <packaging>jar</packaging>
+
+  <dependencies>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.12</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>mysql</groupId>
+      <artifactId>mysql-connector-java</artifactId>
+      <version>5.1.44</version>
+    </dependency>
+  </dependencies>
+
+</project>

module-dao/src/main/java/DAO.java

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+/**
+ * Hello world!
+ *
+ */
+public class DAO
+{
+    public static void main( String[] args )
+    {
+        System.out.println( "Hello World!" );
+    }
+}

module-dao/src/test/java/DAOTest.java

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+import junit.framework.Test;
+import junit.framework.TestCase;
+import junit.framework.TestSuite;
+
+/**
+ * Unit test for simple App.
+ */
+public class DAOTest extends TestCase
+{
+    /**
+     * Create the test case
+     *
+     * @param testName name of the test case
+     */
+    public DAOTest( String testName )
+    {
+        super( testName );
+    }
+
+    /**
+     * @return the suite of tests being tested
+     */
+    public static Test suite()
+    {
+        return new TestSuite( DAOTest.class );
+    }
+
+    /**
+     * Rigourous Test :-)
+     */
+    public void testApp()
+    {
+        assertTrue( true );
+    }
+}

module-scraper/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"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+
+  <parent>
+      <artifactId>webpage-update-subscribe</artifactId>
+      <groupId>com.codebelief.app</groupId>
+      <version>1.0-SNAPSHOT</version>
+  </parent>
+
+  <modelVersion>4.0.0</modelVersion>
+  <artifactId>module-scraper</artifactId>
+  <name>Scraper Module</name>
+  <packaging>jar</packaging>
+
+  <dependencies>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.12</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>com.codebelief.app</groupId>
+      <artifactId>module-dao</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+  </dependencies>
+
+</project>

module-scraper/src/main/java/Scraper.java

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+/**
+ * Hello world!
+ *
+ */
+public class Scraper
+{
+    public static void main( String[] args )
+    {
+        System.out.println( "Hello World!" );
+    }
+}

module-scraper/src/test/java/ScraperTest.java

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+import junit.framework.Test;
+import junit.framework.TestCase;
+import junit.framework.TestSuite;
+
+/**
+ * Unit test for simple App.
+ */
+public class ScraperTest extends TestCase
+{
+    /**
+     * Create the test case
+     *
+     * @param testName name of the test case
+     */
+    public ScraperTest( String testName )
+    {
+        super( testName );
+    }
+
+    /**
+     * @return the suite of tests being tested
+     */
+    public static Test suite()
+    {
+        return new TestSuite( ScraperTest.class );
+    }
+
+    /**
+     * Rigourous Test :-)
+     */
+    public void testApp()
+    {
+        assertTrue( true );
+    }
+}

module-service/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"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+
+  <parent>
+      <artifactId>webpage-update-subscribe</artifactId>
+      <groupId>com.codebelief.app</groupId>
+      <version>1.0-SNAPSHOT</version>
+  </parent>
+
+  <modelVersion>4.0.0</modelVersion>
+  <artifactId>module-service</artifactId>
+  <name>Service Module</name>
+  <packaging>jar</packaging>
+
+  <dependencies>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.12</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>com.codebelief.app</groupId>
+      <artifactId>module-dao</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>com.codebelief.app</groupId>
+      <artifactId>module-scraper</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+  </dependencies>
+
+</project>

module-service/src/main/java/Service.java

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+/**
+ * Hello world!
+ *
+ */
+public class Service
+{
+    public static void main( String[] args )
+    {
+        System.out.println( "Hello World!" );
+    }
+}

module-service/src/test/java/ServiceTest.java

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+import junit.framework.Test;
+import junit.framework.TestCase;
+import junit.framework.TestSuite;
+
+/**
+ * Unit test for simple App.
+ */
+public class ServiceTest extends TestCase
+{
+    /**
+     * Create the test case
+     *
+     * @param testName name of the test case
+     */
+    public ServiceTest( String testName )
+    {
+        super( testName );
+    }
+
+    /**
+     * @return the suite of tests being tested
+     */
+    public static Test suite()
+    {
+        return new TestSuite( ServiceTest.class );
+    }
+
+    /**
+     * Rigourous Test :-)
+     */
+    public void testApp()
+    {
+        assertTrue( true );
+    }
+}

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"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+
+  <modelVersion>4.0.0</modelVersion>
+  <artifactId>webpage-update-subscribe</artifactId>
+  <groupId>com.codebelief.app</groupId>
+  <version>1.0-SNAPSHOT</version>
+  <packaging>pom</packaging>
+  <name>Webpage Update Subscribe</name>
+  <url>http://app.codebelief.com/webpage-update-subscribe/</url>
+
+  <modules>
+      <module>webapp</module>
+      <module>module-scraper</module>
+      <module>module-service</module>
+      <module>module-dao</module>
+  </modules>
+
+</project>

webapp/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"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+
+  <parent>
+      <artifactId>webpage-update-subscribe</artifactId>
+      <groupId>com.codebelief.app</groupId>
+      <version>1.0-SNAPSHOT</version>
+  </parent>
+
+  <modelVersion>4.0.0</modelVersion>
+  <artifactId>webapp</artifactId>
+  <name>Web Application</name>
+  <packaging>war</packaging>
+
+  <dependencies>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.12</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.struts</groupId>
+      <artifactId>struts2-core</artifactId>
+      <version>2.5.13</version>
+    </dependency>
+    <dependency>
+      <groupId>com.codebelief.app</groupId>
+      <artifactId>module-service</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <finalName>webpage-update-subscribe</finalName>
+  </build>
+
+</project>

webapp/src/main/java/WebApp.java

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+/**
+ * Hello world!
+ *
+ */
+public class WebApp
+{
+    public static void main( String[] args )
+    {
+        System.out.println( "Hello World!" );
+    }
+}

webapp/src/main/webapp/WEB-INF/web.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">
+
+    <display-name>Webpage Update Subscribe</display-name>
+
+    <!-- struts2 过滤器，将所有请求都交由 struts2 处理 -->
+    <filter>
+        <filter-name>struts2</filter-name>
+        <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
+    </filter>
+    <filter-mapping>
+        <filter-name>struts2</filter-name>
+        <url-pattern>/*</url-pattern>
+    </filter-mapping>
+
+    <!-- 应用的默认页面 -->
+    <welcome-file-list>
+        <welcome-file>index.jsp</welcome-file>
+    </welcome-file-list>
+
+    <!-- 404错误页面 -->
+    <error-page>
+        <error-code>404</error-code>
+        <location>/error404.jsp</location>
+    </error-page>
+
+</web-app>

webapp/src/main/webapp/error404.jsp

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+<%@ page language="java" contentType="text/html; charset=UTF-8"
+    pageEncoding="UTF-8"%>
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+    <head>
+    	<meta charset="utf-8">
+    	<meta http-equiv="X-UA-Compatible" content="IE=edge">
+    	<meta name="viewport" content="width=device-width, initial-scale=1">
+        <title>页面未找到</title>
+</head>
+
+<body>
+	<center><h1>404 Not Found</h1></center>
+</body>
+</html>

webapp/src/main/webapp/index.jsp

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+<%@ page language="java" contentType="text/html; charset=UTF-8"
+    pageEncoding="UTF-8"%>
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+    <head>
+    	<meta charset="utf-8">
+    	<meta http-equiv="X-UA-Compatible" content="IE=edge">
+    	<meta name="viewport" content="width=device-width, initial-scale=1">
+        <title>首页</title>
+</head>
+
+<body>
+	<center><h1>欢迎使用网页更新订阅！</h1></center>
+</body>
+</html>