首先是java接口代码写了四个让前端请求的接口，以下为代码_java后端api接口供前端调用代码

  @GetMapping("/v1/user/{username}/{password}")
  public Result login2(@PathVariable("username") String username, @PathVariable("password") String password){
    return Result.succResult(200,username+"--"+password);
  }
 
  @PostMapping("/v1/user")
  public Result login3(@RequestBody User user){
    return Result.succResult(200,"ok",user);
  }
 
  @PutMapping("/v1/user")
  public Result putUser(@RequestBody User user){
     return Result.succResult(200,user);
  }
 
  @DeleteMapping("/v1/user/{id}")
  public Result delete(@PathVariable Integer id){
    return Result.succResult(200,id);
  }

前端请求需要在main.js中配置

import Axios from 'axios' Vue.prototype.$axios = Axios

前端请求方式如下

在调用的时候用以下方式进行请求

   this.$axios.get('/api/v1/user/'+this.username+'/'+this.password)
        .then(data=> {
          alert('get//'+data.data.code);
        }).catch(error=> {
         alert(error);
        });
 
      this.$axios.get('/api/v1/user',{
        params: {
          username: this.username,
          password: this.password
        }
      }).then(data =>{
        alert('get'+data.data.data)
      }).catch(error => {
        alert(error)
      });
 
      this.$axios.put('/api/v1/user',{
        id: 1,
        username: this.username,
        password: this.password
      }).then(data => {
        alert('数据password:'+data.data.data.password)
        alert('数据username:'+data.data.data.username)
      }).catch(error => {
        alert(error)
      });
 
      this.$axios.delete('/api/v1/user/1')
        .then(data=> {
          alert('delete//'+data.data.code);
        }).catch(error=> {
         alert(error);
        });
        
      this.$axios.post('/api/v1/user',{
        username: this.username,
        password: this.password
      }).then(data => { 
        alert('post'+data.data.data.password)
      }).catch(error => {
        alert(error);
      });