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Spring MVC 的初步应用

2016-07-23 15:23 393 查看
1.首先导入所需的 jar包

2.在web.xml里配置前端控制器和拦截器

<?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_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>springMVC</display-name>
<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>

<!-- 配置前端控制器 -->
<servlet>
<servlet-name>springmvc2</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>springmvc2</servlet-name>
<url-pattern>*.action</url-pattern>    <!--配置的访问路径，一定是按照这种格式写  -->
</servlet-mapping>
</web-app>


3.配置SpringMVC 
 3.1 方法一  手动配置

springmvc.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:mvc="http://www.springframework.org/schema/mvc"
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">

<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter">
</bean>
<bean id="/hello.action" class="com.smvc.action.HController"> </bean>
<pre name="code" class="html"> <!-- <span style="font-family: Arial, Helvetica, sans-serif;"> 配置处理映射器 </span><span style="font-family: Arial, Helvetica, sans-serif;"> --></span> <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean> <!-- 手动添加action的bean
-->

<bean class="com.smvc.action.HController"></bean> <!-- 引入解析jstl的类 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"></bean></beans>


HController.java

package com.smvc.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

public class HController implements Controller{

@Override
public ModelAndView handleRequest(HttpServletRequest requset,
HttpServletResponse response) throws Exception {
ModelAndView m=new ModelAndView();   //向页面传数据..
m.addObject("hello","haha");
m.setViewName("/index.jsp");
return m;
}

}


index.jsp
<%@ 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>
<title>springMVC</title>
</head>
<body>
${hello}<br>
</body>
</html>


3.2 方法二  用扫描和注释
web.xml 不变

springmvc.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:mvc="http://www.springframework.org/schema/mvc"
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:annotation-config>
<mvc:annotation-driven>
</mvc:annotation-driven>
</context:annotation-config>

<!-- 用扫描的方式把包加入到bean 中 -->
<context:component-scan base-package="com.smvc.action"></context:component-scan>
<!-- 引入解析jstl的类 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"></bean>
</beans>

testAction.java
package com.smvc.action;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller

public class testAction {
/*
* 注释方法
*/
@RequestMapping(value="/test.action")  //地址映射的注释
public ModelAndView gettest(){
ModelAndView m=new ModelAndView();   //向页面传值用。。。
m.addObject("hello", "leaf");
m.setViewName("/index.jsp");
return m;
}

}


jsp页面同上
                                            

                                        

                        
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