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; } }
流年拓荒者
