SpringMVC-@RequestParam

请求处理方法签名

 承接一二章

 

springmvc通过分析处理方法的签名,将http请求信息绑定到处理方法的相应参数中。并根据方法的返回质类型作出相应的后续处理。

必要时可以对其方法及方法参数标注相应的注解。如:@PathVariable @RequestParam @RequestHeader

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>Hello World</title>


  
  <body>
  <a href="springMVC/testRest?name=hah&age=11">hhhhhhhhh</a>
    <br> <br>
   <a href="springMVC/testRest1?name=hah">可以传参数默认是必须的</a> 
    <br> <br>
   
  </body>
</html>

test.java

package com.hdxy.domian;

import java.lang.reflect.Method;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

/**
 * @author 流年拓荒者
 * required=false :设置此参数是不是必须的。默认为turn
 *defaultValue="0"默认为0
 */
@RequestMapping("springMVC")
@Controller
public class Test {
   final public String SUCCESS="loginSuccess";
  
   @RequestMapping(value="/testRest")
   public String testRequestParam(@RequestParam(value="name") String un,@RequestParam(value="age")String age){
       System.out.println("testRequestParam"+un+age);
       return SUCCESS;
   }
   
   @RequestMapping(value="/testRest1")
   public String testsRequestParam(@RequestParam(value="name") String un,@RequestParam(value="age",required=false,defaultValue="0")int age){
       System.out.println("testRequestParam"+un+age);
       return SUCCESS;
   }
}

 

posted @ 2017-12-11 20:45  流年拓荒者  阅读(160)  评论(0编辑  收藏  举报
   
在博客右侧,浮出一个微博浮动框