spring boot get和post请求,以及requestbody为json串时候的处理
GET、POST方式提时, 根据request header Content-Type的值来判断:
- application/x-www-form-urlencoded, 可选(即非必须,因为这种情况的数据@RequestParam, @ModelAttribute也可以处理,当然@RequestBody也能处理);
- multipart/form-data, 不能处理(即使用@RequestBody不能处理这种格式的数据);
- 其他格式, 必须(其他格式包括application/json, application/xml等。这些格式的数据,必须使用@RequestBody来处理);
代码:
- package com.example.controller;
- import org.springframework.web.bind.annotation.GetMapping;
- import org.springframework.web.bind.annotation.PathVariable;
- import org.springframework.web.bind.annotation.RequestBody;
- 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.bind.annotation.RestController;
- import com.example.bean.RequestLoginBean;
- import com.example.response.BaseResponse;
- import com.google.gson.Gson;
- @RestController
- @RequestMapping(value = "/index")
- public class Login {
- /**
- * index home
- *
- * @return
- */
- @RequestMapping(value = "/home")
- public String home() {
- return "index home";
- }
- /**
- * 得到1个参数
- *
- * @param name
- * 用户名
- * @return 返回结果
- */
- @GetMapping(value = "/{name}")
- public String index(@PathVariable String name) {
- return "oh you are " + name + "<br> nice to meet you";// \n不起作用了,那就直接用html中的标签吧
- }
- /**
- * 简单post请求
- *
- * @param name
- * @param pwd
- * @return
- */
- @RequestMapping(value = "/testpost", method = RequestMethod.POST)
- public String testpost() {
- System.out.println("hello test post");
- return "ok";
- }
- /**
- * 同时得到两个参数
- *
- * @param name
- * 用户名
- * @param pwd
- * 密码
- * @return 返回结果
- */
- @GetMapping(value = "/login/{name}&{pwd}")
- public String login(@PathVariable String name, @PathVariable String pwd) {
- if (name.equals("admin") && pwd.equals("admin")) {
- return "hello welcome admin";
- } else {
- return "oh sorry user name or password is wrong";
- }
- }
- /**
- * 通过get请求去登陆
- *
- * @param name
- * @param pwd
- * @return
- */
- @RequestMapping(value = "/loginbyget", method = RequestMethod.GET)
- public String loginByGet(@RequestParam(value = "name", required = true) String name,
- @RequestParam(value = "pwd", required = true) String pwd) {
- return login4Return(name, pwd);
- }
- /**
- * 通过post请求去登陆
- *
- * @param name
- * @param pwd
- * @return
- */
- @RequestMapping(value = "/loginbypost", method = RequestMethod.POST)
- public String loginByPost(@RequestParam(value = "name", required = true) String name,
- @RequestParam(value = "pwd", required = true) String pwd) {
- System.out.println("hello post");
- return login4Return(name, pwd);
- }
- /**
- * 参数为一个bean对象.spring会自动为我们关联映射
- * @param loginBean
- * @return
- */
- @RequestMapping(value = "/loginbypost1", method = { RequestMethod.POST, RequestMethod.GET })
- public String loginByPost1(RequestLoginBean loginBean) {
- if (null != loginBean) {
- return login4Return(loginBean.getName(), loginBean.getPwd());
- } else {
- return "error";
- }
- }
- /**
- * 请求内容是一个json串,spring会自动把他和我们的参数bean对应起来,不过要加@RequestBody注解
- *
- * @param name
- * @param pwd
- * @return
- */
- @RequestMapping(value = "/loginbypost2", method = { RequestMethod.POST, RequestMethod.GET })
- public String loginByPost2(@RequestBody RequestLoginBean loginBean) {
- if (null != loginBean) {
- return login4Return(loginBean.getName(), loginBean.getPwd());
- } else {
- return "error";
- }
- }
- /**
- * 对登录做出响应处理的方法
- *
- * @param name
- * 用户名
- * @param pwd
- * 密码
- * @return 返回处理结果
- */
- private String login4Return(String name, String pwd) {
- String result;
- BaseResponse response = new BaseResponse();
- if (name.equals("admin") && pwd.equals("admin")) {
- result = "hello welcome admin";
- response.setState(true);
- } else {
- result = "oh sorry user name or password is wrong";
- response.setState(false);
- }
- System.out.println("收到请求,请求结果:" + result);
- return new Gson().toJson(response);
- }
- }