spring3 mvc：方法返回值的学习
新建后台代码用以测试返回类型，在这里我新建的如下：
/**
* 项目名称：Spring3mvc demo
* Copyright ? 2010-2012 spartacus.org.cn All Rights Reserved
*/
package cn.org.spartacus.spring;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
/**
* Description: TODO
* @author hankaibo
* @date 2012-11-4
* @version v1.0
*/
@Controller
//添加注解，这样配置文件就可以找到它了。
public class ReturnController {
}
1，测试ModelAndView类型的返回。在代码中添加如下方法：
/**
* 项目名称：Spring3mvc demo
* Copyright ? 2010-2012 spartacus.org.cn All Rights Reserved
*/
package cn.org.spartacus.spring;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
/**
* Description: TODO
* @author hankaibo
* @date 2012-11-4
* @version v1.0
*/
@Controller //添加注解，这样配置文件就可以找到它了。
@RequestMapping("return")
public class ReturnController {
/**
* <p>Description: 测试一，返回ModelAndVie类型</p>
* @param
* @return ModelAndView
*/
@RequestMapping(value="test1",method=RequestMethod.GET)
public ModelAndView test1(HttpServletRequest request,HttpServletResponse response){
ModelAndView mav=new ModelAndView();
mav.setViewName("mav"); //设置返回的文件名
mav.addObject("mav", "我的返回类型是ModelAndView.");
return mav;
}
}
新建用于接受结果的前台页面mav.jsp：
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!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>mav</title>
</head>
<body>
${mav }
</body>
</html>
在success.jsp中添加触发条件
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!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>hello world</title>
</head>
<body>
Hello world!
<c:redirect url="/app/return/test1" />
</body>
</html>
地址栏输入测试，完成。
最后完整版如下，Java代码：
/**
* 项目名称：Spring3mvc demo
* Copyright © 2010-2012 spartacus.org.cn All Rights Reserved
*/
package cn.org.spartacus.spring;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.View;
/**
* Description: TODO
*
* @author hankaibo
* @date 2012-11-4
* @version v1.0
*/
@Controller
// 添加注解，这样配置文件就可以找到它了。
@RequestMapping("return")
public class ReturnController {
/**
* <p>
* Description: 测试一，返回ModelAndVie类型
* </p>
*
* @param
* @return ModelAndView
*/
@RequestMapping(value = "test1", method = RequestMethod.GET)
public ModelAndView test1(HttpServletRequest request, HttpServletResponse response) {
ModelAndView mav = new ModelAndView();
mav.setViewName("return/mav"); // 设置返回的文件名
mav.addObject("mav", "我的返回类型是ModelAndView.");
return mav;
}
/**
* <p>
* Description: 跳转到界面为 类路径@RequestMapping的值+方法@RequestMapping的值组成的页面
* </p>
*
* @param
* @return Model
* @throws
*/
@RequestMapping("test2")
public Model test2(Model model) {
model.addAttribute("model", "我的返回类型是Model");
return model;
}
/**
* <p>
* Description: 跳转到界面为 类路径@RequestMapping的值+方法@RequestMapping的值组成的页面
* </p>
*
* @param
* @return ModelMap
* @throws
*/
@RequestMapping("test3")
public ModelMap test3(ModelMap modelMap) {
modelMap.addAttribute("modelMap", "我的返回类型是ModelMap");
return modelMap;
}
/**
* <p>
* Description: 跳转到界面为 类路径@RequestMapping的值+方法@RequestMapping的值组成的页面
* </p>
*
* @param
* @return Map
* @throws
*/
@RequestMapping("test4")
public Map test4(Map map) {
map.put("map", "我的返回类型是Map");
return map;
}
/**
* <p>Description: TODO 返回的页面可以为pdf,excel等。</p>
* @param
* @return View
* @throws
*/
@RequestMapping("test5")
public View test5(){
return null;
}
/**
* <p>Description: 跳转到界面为 类路径@RequestMapping的值+方法@RequestMapping的值组成的页面</p>
* @param
* @return void
* @throws
*/
@RequestMapping("test6")
public void test6(Map<String,Object> map){
map.put("void","我的返回类型是void");
}
/**
* <p>Description: TODO</p>
* @param
* @return String
* @throws
*/
@RequestMapping("test7")
public String test7(Map<String,Object> map){
map.put("string", "我的返回类型是String");
return "return/string";
}
}
jsp代码如下：
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!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>hello world</title>
</head>
<body>
Hello world!
<c:redirect url="/app/return/test1" />
<%--
<c:redirect url="/app/return/test2" />
<c:redirect url="/app/return/test3" />
<c:redirect url="/app/return/test4" />
<c:redirect url="/app/return/test5" />
<c:redirect url="/app/return/test6" />
<c:redirect url="/app/return/test7" />
--%>
</body>
</html>
最后附上代码结构图：
