Spring MVC—XML 配置与注解配置 + 使用注解完成请求参数绑定
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
要想把 SpringMVC 框架应用到 Web 项目中，我们首先需要在 web.xml 添加一个 Servlet —— DispatchcerServlet。DispatcherServlet 是 SpringMVC 的集中访问点，其核心功能就是分发请求，而且能与 Spring IoC 容器无缝集成，从而可以获得 Spring 的所有好处。
2,在 web.xml 中指定路径配置 SpringMVC 的配置文件
<?xml version="1.0" encoding="utf-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">
<bean name="/hello" class="cn.edu.tju.rico.controller.He
lloController" />
<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" />
<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" />
</beans>
3,实现 SpringMVC 配置文件中配置的 Controller
public class HelloController implements Controller {
public ModelAndView handleRequest( HttpServletRequest request,
HttpServletResponse response ) throws Exception
{
//创建准备返回的 ModelAndView 对象，如名所示，该对象通常包含了返回视图名、模型名称以及模型对象
ModelAndView mv = new ModelAndView();
// 添加模型数据，可以是任意的 POJO 对象
mv.addObject( "message", "Hello， Rico..." );
// 设置逻辑视图名，视图解析器会根据该名字解析到具体的视图页面
mv.setViewName( "/WEB-INF/views/welcome.jsp" );
// 返回 ModelAndView 对象
return(mv);
}
}
4,相应的视图页面
<?xml version="1.0"?>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>welcome</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<body>${requestScope.message}
<br></br></body>
</meta>
</meta>
</meta>
</meta>
</meta>
</base>
</head>
</html>
SpringMVC 应用开发流程 DEMO：Annotation 配置
================================================================================================
1,在 web.xml 中配置前端控制器 DispatcherServlet
<?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" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>SpringMVCDemo</display-name>
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
2,在 web.xml 中指定路径配置 SpringMVC 的配置文件
<?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" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<context:component-scan base-package="cn.edu.tju.rico"></context:component-scan>
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping" />
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