SpringMVC+Maven實現HelloWorld

一、創建項目

.
│  pom.xml
├─src
│  └─main
│      ├─java
│      │  └─com
│      │      └─yale
│      │          └─controller
│      │                  HelloWorldController.java
│      │
│      ├─resources
│      │      dispatcher-servlet.xml
│      │
│      └─webapp
│          └─WEB-INF
│              │  web.xml
│              │
│              └─pages
│                      hello.jsp

二、pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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>
  <packaging>war</packaging>

  <name>springmvc4</name>
  <groupId>com.yale</groupId>
  <artifactId>springmvc4</artifactId>
  <version>1.0-SNAPSHOT</version>

  <properties>
      <spring.version>4.1.2.RELEASE</spring.version>
  </properties>

  <dependencies>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-web</artifactId>
          <version>${spring.version}</version>
      </dependency>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-webmvc</artifactId>
          <version>${spring.version}</version>
      </dependency>
      <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>javax.servlet-api</artifactId>
          <version>3.0.1</version>
          <scope>provided</scope>
      </dependency>
      <dependency>
          <groupId>jstl</groupId>
          <artifactId>jstl</artifactId>
          <version>1.2</version>
      </dependency>
  </dependencies>

</project>

三、web.xml

<web-app
        xmlns="http://xmlns.jcp.org/xml/ns/javaee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
        version="3.1">

        <servlet>
                <servlet-name>dispatcher</servlet-name>
                <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
                <init-param>
                        <param-name>contextConfigLocation</param-name>
                        <param-value>classpath:dispatcher-servlet.xml</param-value>
                </init-param>
                <load-on-startup>1</load-on-startup>
        </servlet>
        <servlet-mapping>
                <servlet-name>dispatcher</servlet-name>
                <url-pattern>/</url-pattern>
        </servlet-mapping>

</web-app>

四、dispatcher-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">

       <context:component-scan base-package="com.yale.controller" />

       <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
              <property name="prefix" value="/WEB-INF/pages/" />
              <property name="suffix" value=".jsp" />
       </bean>

</beans>

五、HelloWorldController

package com.yale.controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

@Controller
@RequestMapping("/hello")
public class HelloWorldController {

    @RequestMapping("sayHi")
    public String sayHi(@RequestParam("name") String name, ModelMap map){
        String message = "Hi, " + name + "!";
        System.out.println(message);
        map.put("message",message);
        return "hello";
    }

}

六、hello.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>HelloWorld</title>
</head>
<body>
    ${message}
</body>
</html>