1.web.xml
[html]
< xml version="1.0" encoding="UTF-8" >
2.hello-servlet.xml
[html]
< xml version="1.0" encoding="UTF-8" >
xmlns:m
vc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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">
3.hello.jsp
[
html]
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
hello
${hello}
${string}
4.HelloController.java
[java]
package cn.edu.zttc.controller;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
/**
* 基于@的MVC处理
* @author admin
*
*/
@Controller
public class HelloController {
/**
* SpringMVC
* 设定访问规则：@RequestMapping(value={"/","/hello"})
* 传递参数三种方法：
* 1.@RequestParam("userId") int id
* 2.@RequestParam() int id
* 3.int id
* 如果设置了@RequestMapping；则访问的时候必须加入 和参数，否则不会访问当前方法
*
* Struts2的
*
* @param id
* @return
*/
@RequestMapping(value={"/","/hello"})
public String hello(@RequestParam("userId") int id,Map map){
System.out.println("hello");
System.out.println(id);
map.put("hello", "hello world");
return "hello";
}
/**
* 使用Model
* @param model
* @return
*/
// public String say(@RequestParam()int id,Model model){
@RequestMapping(value="/say")
public String say(Model model){
model.addAttribute("hello", "say hello world");
//使用Object的类型作为key，string-->String
//访问：${string}
model.addAttribute("ok");
return "hello";
}
/**
* 获取前台传递的request参数
* @param req
* @return
*/
@RequestMapping("/req")
public String req(HttpServletRequest req){
System.out.println(req.getParameter("username"));
return "hello";
}
}
下面附上项目结构图：
以及项目所需要的包：
