学习Spring MVC,关于注解的Spring MVC,关于控制器的Spring MVC,学习Spring,简单Spring MVC实例

实现步骤

在Eclipse中新建项目Web项目TestSpring。
引入Spring和Spring MVC相关Jar包。

在WebRoot的WEB-INF文件下新建spring-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:mvc="http://www.springframework.org/schema/mvc"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        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">

	<!-- 基于注解 -->
	<context:component-scan base-package="spring"></context:component-scan>
	<mvc:annotation-driven />
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/jsp/" />
		<property name="suffix" value=".jsp" />
		<property name="viewClass"
			value="org.springframework.web.servlet.view.JstlView" />
	</bean>

	<!-- 基于控制器 -->
	<!-- <bean
		class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" />
	<bean
		class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" />
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/jsp/" />
		<property name="suffix" value=".jsp" />
		<property name="viewClass"
			value="org.springframework.web.servlet.view.JstlView" />
	</bean>
	<bean name="/hello" class="spring.HelloWorldController" /> -->

</beans>

在WebRoot的WEB-INF文件下配置web.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"
	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>TestSpring</display-name>
	<welcome-file-list>
		<welcome-file>index.jsp</welcome-file>
	</welcome-file-list>

	<filter>
		<filter-name>CharacterEncodingFilter</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>utf-8</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>CharacterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:applicationContext.xml</param-value>
	</context-param>

	<servlet>
		<servlet-name>dispatch</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>/WEB-INF/spring-servlet.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>dispatch</servlet-name>
		<url-pattern>/</url-pattern>  <!-- 不带尾椎 -->
		<!-- <url-pattern>*.do</url-pattern> --> <!-- 带尾椎 -->
	</servlet-mapping>

</web-app>
新建Spring包,并新建类HomeController,用于做控制器(注解使用重点):
package spring;

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

@Controller
public class HomeController {
	//@RequestMapping 中请求Action为"home",支持方法有post,get, (required = false)参数非必要
	@RequestMapping(value = "home", method = { RequestMethod.POST,
			RequestMethod.GET })
	public String responsePage(@RequestParam(required = false) String page) {
		return page;
	}
	
	//支持HTTP协议所有方法,@ResoinseBody = 响应此“方法”返回值为页面内容。参数键为"para",默认para默认值为"this is body"
	@ResponseBody
	@RequestMapping(value = "getshow")
	public String responseBody(@RequestParam(value = "para", defaultValue = "this is body", required = false) String content) {
		return content;
	}
	
	//显示El表达式,响应body.jsp视图
	@RequestMapping(value = "getel")
	public ModelAndView responseEL(){
		ModelAndView mv = new ModelAndView();
		mv.addObject("message", "你们好!我是通过EL表达式出来的内容");
		mv.setViewName("body");
		return mv;
	}
}
在WEB-INF下新建文件夹jsp,在jsp文件夹下添加home.jsp,和body.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>
	hello ,this is a spring mvc annotation demo!
</body>
</html>
<%@ 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>
	this is body page;
	<p>${message}</p>
</body>
</html>


最后,运行服务器,在地址栏输入地址:
http://localhost:8080/TestSpring/home
http://localhost:8080/TestSpring/getshow?para=my%20is%20Jaiky
http://localhost:8080/TestSpring/getel
效果图:

获取源代码:Java SpringMVC 注解学习
源代码说明:由于本人使用MyEclipse在源代码中导入了Hibernate Jar包,使用时如遇报错请自行删除不需要的配置,或另行导入到新项目。


声明

欢迎转载,但请保留文章原始出处
作者:Jaiky_杰哥 
出处:http://blog.csdn.net/jaikydota163/article/details/51480421



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