目标：使用SpringMvc框架，开发HelloWorld项目
步骤：
1.准备SpringMvc相关jar包
commons-io-1.2.jar
commons-logging-1.1.1.jar
freemarker.jar
hibernate-validator-4.0.2.GA.jar
jstl-1.2.jar
log4j-1.2.14.jar
org.springframework.context.support-3.1.0.M2.jar
servlet-2.3.jar
slf4j-api-1.5.6.jar
slf4j-log4j12-1.5.6.jar
spring-asm-3.0.3.RELEASE.jar
spring-beans-3.0.3.RELEASE.jar
spring-context-3.0.3.RELEASE.jar
spring-core-3.0.3.RELEASE.jar
spring-expression-3.0.3.RELEASE.jar
spring-web-3.0.3.RELEASE.jar
spring-webmvc-3.0.3.RELEASE.jar
validation-api-1.0.0.GA.jar
commons-fileupload-1.1.1.jar
2.创建Dynamic Web Project项目,名称为helloworld,将SpringMvc相关jar包复制到WEB-INF/lib文件夹下
3.配置SpringMvc相关文件
①web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>helloworld</display-name>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>②在WEB-INF文件夹下新建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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
">
<!-- 搜索的控制类路径(C) -->
<context:component-scan base-package="com.myapps.controllers" />
<!-- 配置视图路径(V) -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
③新建包：com.myapps.controllers
④在上面的包内新建类：HelloWorldController.java
package com.myapps.controllers;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
@Controller
public class HelloWorldController 
{
@RequestMapping(value="/helloworld")
public ModelAndView helloWord() {
return new ModelAndView("helloworldPage", "name", "hdh");
}
}
⑤在WEB-INF文件夹下新建views文件夹，在views文件夹内新建helloworldPage.jsp
<%@ 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 http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>helloworldPage.jsp</title>
</head>
<body>
Hello,world.Welcome ${name} here.
</body>
</html>
⑥接着在WebContent下新建index.htm(注意后缀是htm,因为如果是html的话，会和web.xml的<url-pattern>*.html</url-pattern>拦截的后缀名冲突，当然也可以新建index.jsp文件)
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>index.htm</title>
</head>
<body>
<a href="helloworld.html">hello,world(htm)</a>
</body>
</html>
⑦最后，部署项目，然后启动tomcat服务器，输入http://localhost:8080/helloworld/index.htm ,点击链接进行测试。这样简单的Hello,world入门就完成了。
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