springMVC_01

先了解历史，springMVC使用XML配置的方式

 

 springMVC需要的部分依赖

<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>
	<groupId>com.gc.springmvc</groupId>
	<artifactId>springmvc</artifactId>
	<packaging>war</packaging>
	<version>0.0.1-SNAPSHOT</version>
	<name>springmvc Maven Webapp</name>
	<url>http://maven.apache.org</url>
	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>3.8.1</version>
			<scope>test</scope>
		</dependency>
		
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>3.2.7.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>3.2.6.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-beans</artifactId>
			<version>3.2.6.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>3.2.6.RELEASE</version>
		</dependency>
		
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>servlet-api</artifactId>
			<version>2.5</version>
		</dependency>
	</dependencies>
	<build>
		<finalName>springmvc</finalName>
		<plugins>
			<!-- jetty插件 -->
			<plugin>
				<groupId>org.mortbay.jetty</groupId>
				<artifactId>maven-jetty-plugin</artifactId>
				<version>6.1.10</version>
				<configuration>
					<scanIntervalSeconds>1000</scanIntervalSeconds>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

web.xml

在DispatcherServlet中，如果使用了contextConfigLocation属性设置了值，

则可以不遵守"*-servlet.xml"规则，命名随意。

如果没有使用contextConfigLocation初始化参数进行配置，

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则必须将springMVC对应的配置文件按"*-servlet.xml"结尾来命名！

<?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_2_5.xsd"
	id="WebApp_ID" version="2.5">
	<servlet>
		<servlet-name>springMVC</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>/WEB-INF/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>

springMVC.xml   专门用来配置springMVC

<?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.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
    <!-- 配置返回的数据如何呈现：前缀+逻辑视图+后缀 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> 
    	<property name="prefix" value="/WEB-INF/jsp/"/>
    	<property name="suffix" value=".jsp"/>
    </bean>
    <!-- 最原始的基于XML的配置方式，作为历史了解 -->
    <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>  
    <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/> 
    <bean name="/user" class="com.gc.springmvc.controller.UserController"></bean> 
</beans>

实现Controller接口的类

spring将根据bean的name值进行匹配

然后调用对应类的handleRequset方法进行请求处理

package com.gc.springmvc.controller;


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

import org.springframework.web.servlet.ModelAndView;

public class UserController implements org.springframework.web.servlet.mvc.Controller{

	public ModelAndView handleRequest(HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		ModelAndView mv = new ModelAndView("reg");
		mv.addObject("演示spring2.5");
		
		return mv;
	}

}

index.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>Insert title here</title>
</head>
<body>
	<form action="user">
		<input type=hidden name="method" value="reg1"/>
		用户名:
		<input type=text name="uname" /> <br /> 
		<input type=submit value="submit">
	</form>
</body>
</html>

 reg.jsp

<html>
<body>
	<hr/>
	${string}
</body>
</html>

使用注解配置Controller

package com.gc.springmvc.controller;

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

@Controller
@RequestMapping("/user")
public class UserController{
	
	@RequestMapping(params="method=reg")
	public ModelAndView reg() {
		ModelAndView mv = new ModelAndView("reg");
		mv.addObject("使用注解进行配置");
		
		return mv;
	}

}

对应的springMVC的配置文件需要配置注解的功能支持

<?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.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
    <!-- 自动注册DefaultAnnotationHandlerMapping与AnnotationMethodHandlerAdapter 两个bean
    	是spring MVC为@Controllers分发请求所必须的 -->
    <mvc:annotation-driven/>

    <!-- 配置需要被扫描的包 -->
    <context:component-scan base-package="com.gc.springmvc.controller"/>

    <!-- 配置对静态资源文件的访问不被过滤 WebContent/resources目录中的文件都能访问 -->
    <mvc:resources location="/resources/" mapping="/resources/**"/>
    
    <!-- 配置返回的数据如何呈现：前缀+逻辑视图+后缀 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> 
    	<property name="prefix" value="/WEB-INF/jsp/"/>
    	<property name="suffix" value=".jsp"/>
    </bean>
</beans>

index.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>Insert title here</title>
</head>
<body>
	<form action="user">
		<!-- 该参数将被@RequestMapping(params="method=reg")所用到 -->
		<input type=hidden name="method" value="reg"/>
		用户名:
		<input type=text name="uname" /> <br /> 
		<input type=submit value="submit">
	</form>
</body>
</html>

reg.jsp

<html>
<body>
	<hr/>
	${string}
</body>
</html>