基于annotation注解的Spring3 MVC之一 HelloWorld 例子学习笔记

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文件:

com.jiangge.common.controller.HelloController.java

package com.jiangge.common.controller;import org.springframework.stereotype.Controller;import org.springframework.ui.ModelMap;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;@Controller@RequestMapping("/hello")public class HelloController{    @RequestMapping(method = RequestMethod.GET)   public String printHello(ModelMap model) {      model.addAttribute("message", "Hello Spring MVC Framework!"); //message对应jsp文件中的JSTL${message}      return "hello"; // hello.jsp   }}

也可以这样写:

  //另一种写法@Controllerpublic class HelloController{    @RequestMapping(value = "/hello", method = RequestMethod.GET)   public String printHello(ModelMap model) {      model.addAttribute("message", "Hello Spring MVC Framework!"); //message对应jsp文件中的JSTL${message}      return "hello"; // hello.jsp   }}

/Spring3MVCDemoHello/WebRoot/WEB-INF/jsp/hello.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=ISO-8859-1"><title>SpringMVC练习Demo</title></head><body><h1>传递过来的数据是 : ${message}</h1><h2>use JSP templates written with JSTL,JSP Standard Tag Library, <br>使用JSP 标准标记库获得后端传过来的数据</br></h2><h3>Here "\${message}" is the attribute which we have setup inside the Controller. You can have multiple attributes to be displayed inside your view.</h3><h3>\${message}是在Controller里返回的属性</h3></body></html>

/Spring3MVCDemoHello/WebRoot/WEB-INF/HelloWeb-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: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-2.5.xsd    http://www.springframework.org/schema/context     http://www.springframework.org/schema/context/spring-context-2.5.xsd    http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"><context:component-scan base-package="com.jiangge.common.controller"/>   <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">      <property name="prefix" value="/WEB-INF/jsp/" />      <property name="suffix" value=".jsp" />   </bean></beans>

/Spring3MVCDemoHello/WebRoot/WEB-INF/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/j2ee" xmlns:javaee="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/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" id="WebApp_ID" version="2.4">  <display-name>Spring Annotation MVC Hello Sample</display-name>  <servlet>    <servlet-name>HelloWeb</servlet-name>    <servlet-class>         org.springframework.web.servlet.DispatcherServlet      </servlet-class>    <load-on-startup>1</load-on-startup>  </servlet>    <servlet-mapping>    <servlet-name>HelloWeb</servlet-name>    <url-pattern>/app/*</url-pattern>  </servlet-mapping>    <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list></web-app>

注: url /app/

http://localhost:8080/Spring3MVCDemo/app/hello

参考:

http://www.tutorialspoint.com/spring/spring_web_mvc_framework.htm

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