第一章 问候SpringMVC
第一节 SpringMVC简介
SpringMVC是一套功能强大，性能强悍，使用方便的优秀的MVC框架
下载和安装Spring框架：
登录http://repo.springsource.org/libs-release-local/
选择org->springframework->spring，然后选择一个版本下载，可以是4.2.0版本
除此之外，Spring的核心容器还必须依赖commons-logging的jar包
登录http://commons.apache.org/
选择Releases->Logging，下载commons-logging工具，下载好了解压将commons-logging-1.2.jar添加到项目的类加载路径中
第二节 SpringMVC版HelloWorld实现
导入对应的jar包：
web.xml: 1 <?xml version="1.0" encoding="UTF-8"?>
2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xmlns="http://java.sun.com/xml/ns/javaee" 4 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 5 id="WebApp_ID" version="2.5"> 6 <display-name>SpringMvc01</display-name> 7 <welcome-file-list> 8 <welcome-file>index.html</welcome-file> 9 </welcome-file-list> 10 11 <servlet>
<!-- Servlet的名称 --> 12 <servlet-name>springmvc</servlet-name>
<!-- Serlvet对应的java类 --> 13 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 当前Servlet的参数信息 --> 14 <init-param>
<!-- contextConfigLocation是参数名称，该参数的值包含SpringMVC的配置文件路径 --> 15 <param-name>contextConfigLocation</param-name> 16 <param-value>classpath:spring-mvc.xml</param-value> 17 </init-param> 18 </servlet>
<!-- Servlet映射声明 --> 19 <servlet-mapping>
<!-- 请求对应的Servlet的名称 --> 20 <servlet-name>springmvc</servlet-name>
<!-- 监听当前域的所有请求 --> 21 <url-pattern>*.do</url-pattern> 22 </servlet-mapping> 23 </web-app>
index.html：
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Insert title here</title> 6 </head> 7 <body> 8 <a href="helloWorld.do">问候SpringMvc</a> 9 </body> 10 </html>
spring-mvc.xml:
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:p="http://www.springframework.org/schema/p" 5 xmlns:context="http://www.springframework.org/schema/context" 6 xsi:schemaLocation=" 7 http://www.springframework.org/schema/beans 8 http://www.springframework.org/schema/beans/spring-beans.xsd 9 http://www.springframework.org/schema/context 10 http://www.springframework.org/schema/context/spring-context.xsd"> 11 12 <!-- 使用注解的包，包括子集 -->
<!-- Spring可以自动去扫描base-pack下面的包或者子包下面的java文件，如果扫描到有Spring的相关注解的类，则把这些类注册为Spring的bean --> 13 <context:component-scan base-package="com.wishwzp"/> 14 15 <!-- 视图解析器 --> 16 <bean id="viewResolver" 17 class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 18 <property name="prefix" value="/WEB-INF/jsp/" /> 19 <property name="suffix" value=".jsp"></property> 20 </bean> 21 22 </beans>
HelloWorldController.java:
1 package com.wishwzp.controller; 2 3 import org.springframework.stereotype.Controller; 4 import org.springframework.ui.Model; 5 import org.springframework.web.bind.annotation.RequestMapping; 6 7 @Controller 8 public class HelloWorldController { 9 10 @RequestMapping("/helloWorld") 11 public String helloWorld(Model model){ 12 model.addAttribute("message", "StringMvc你好！"); 13 return "helloWorld"; 14 } 15 }
helloWorld.jsp:
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7 <title>Insert title here</title> 8 </head> 9 <body> 10 ${message } 11 </body> 12 </html>