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映射请求参数介绍

發布時間：2024/4/13 编程问答 29 豆豆

生活随笔收集整理的這篇文章主要介紹了映射请求参数介绍小編覺得挺不錯的,現在分享給大家,幫大家做個參考.

映射請求參數

@RequestParam

普通

@RequestMapping(value="testRequestParam",method=RequestMethod.GET)public String testRequestParam(@RequestParam("age") Integer age){System.out.println("=====testRequestParam: "+age);return "ok";}

帶3屬性

@RequestMapping(value="testRequestParam",method=RequestMethod.GET)public String testRequestParam(@RequestParam(value="age",required=false,defaultValue="55") Integer age){System.out.println("=====testRequestParam: "+age);return "ok";}

多個值

testRequestParam: <a href="${pageContext.request.contextPath}/testRequestParam? age=33&roleId=11&roleId=12&roleId=13">testRequestParam</a> @RequestMapping(value="testRequestParam",method=RequestMethod.GET)public String testRequestParam(@RequestParam(value="age",required=false,defaultValue="55") Integer age,@RequestParam("roleId") List<String> roleId){System.out.println("=====testRequestParam: "+age);for (String element : roleId){System.out.println(element);}return "ok";}

@PathVariable

@RequestHeader，獲得請求頭的值

@RequestMapping(value="/testRequestHeader",method=RequestMethod.GET)public String testRequestHeader(@RequestHeader("User-Agent") String UserAgent){System.out.println("=====testRequestHeader:"+UserAgent);return "ok";}

@CookieValue

@RequestMapping(value="/testCookieValue",method=RequestMethod.GET)public String testCookieValue(@CookieValue("JSESSIONID") String sid){System.out.println("-----testCookieValue: "+sid);return "ok"; }

POJO對象作為入參

public class User {private Integer id;private String userName;private String passWord;private int age;private String email; } <%@ 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>Insert title here</title> </head> <body><hr> testRequestParam:<a href="${pageContext.request.contextPath}/testRequestParam?age=26&roleId=11&roleId=12">testRequestParam</a> <hr> testRequestHeader:<a href="${pageContext.request.contextPath}/testRequestHeader">testRequestHeader</a> <hr> testCookieValue:<a href="${pageContext.request.contextPath}/testCookieValue">testCookieValue</a> <hr> POJO:<br><form action="${pageContext.request.contextPath}/testPOJO" method="post"><input type="text" name="userName" value="z3"/><br><input type="password" name="passWord" value="123456"/><br><input type="text" name="age" value="28"/><br><input type="text" name="email" value="z3@163.com"/><br><input type="submit" value="POJO_commit"></form> <hr></html> package com.learn.springmvc.test;import java.io.IOException; import java.io.Writer; 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.CookieValue; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestHeader; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.servlet.ModelAndView;import com.learn.springmvc.entities.User;@Controller //@SessionAttributes(value="user") public class Test001 {@RequestMapping(value="/testRequestParam",method=RequestMethod.GET)public String testRequestParam(@RequestParam(value="age",required=false,defaultValue="99") Integer age,@RequestParam("roleId") String[] roleIds){System.out.println("-----testRequestParam age: "+age);for (int i = 0; i < roleIds.length; i++){System.out.println(roleIds[i]);}return "ok";} @RequestMapping(value="/testRequestHeader",method=RequestMethod.GET)public String testRequestHeader(@RequestHeader("Host") String host){System.out.println("-----testRequestHeader host: "+host);return "ok";}@RequestMapping(value="/testCookieValue",method=RequestMethod.GET)public String testCookieValue(@CookieValue("JSESSIONID") String id){System.out.println("-----testCookieValue: "+id);return "ok";} @RequestMapping(value="/testPOJO",method=RequestMethod.POST)public String testPOJO(User user){System.out.println("-----testPOJO: "+user.toString());return "ok";} }

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