Axios传值的几种方式

使用get方式进行无参请求

     axios({
         url:'http://localhost:8080/get/getAll',
         method:'get'
     }).then(res=>{
         console.log(res.data.data)
     })
 
 @GetMapping("/get/getAll")
     public ResResult getAllUser(){
         List list = userService.list();
         return ResResult.okResult(list);
     }

 使用get方式请求，参数值直接放在路径中

     axios({
         url:'http://localhost:8080/get/1',
         method:'get'
     }).then(res=>{
         console.log(res.data.data)
     })
 
 后端接口
 @GetMapping("/get/{id}")
 public ResResult getUserById(@PathVariable("id") Long id){
         User user = userService.getById(id);
         return ResResult.okResult(user);
 }

 使用get方式请求，参数拼接在路径中：方式① 

     axios({
         url:'http://localhost:8080/get?id=1',
         method:'get'
     }).then(res=>{
         console.log(res.data.data)
     })
 
 后端接口
 @GetMapping("/get")
     public ResResult getUserByIds(@RequestParam("id") Long id){
         User user = userService.getById(id);
         return ResResult.okResult(user);
 }

 使用get方式请求，参数拼接在路径中：方式②

     axios({
         url:'http://localhost:8080/get',
         params:{
             id:'2'
         },
         method:'get'
     }).then(res=>{
         console.log(res.data.data)
     })
 
后端接口
@GetMapping("/get")
    public ResResult getUserByIds(@RequestParam("id") Long id){
        User user = userService.getById(id);
        return ResResult.okResult(user);
}

使用get方式请求，拼接多个参数在路径中：方式③ 

    axios({
        url:'http://localhost:8080/get',
        params:{
            id:'2',
            username:'swx'
        },
        method:'get'
    }).then(res=>{
        console.log(res.data.data)
    })

后端接口
@GetMapping("/get")
    public ResResult getUserByIds(@RequestParam("id") Long id,@RequestParam("username") String username){
        LambdaQueryWrapper wrapper = new LambdaQueryWrapper();
        wrapper.eq(User::getUsername,username);
        wrapper.eq(User::getId,id);
        User user = userService.getOne(wrapper);
        return ResResult.okResult(user);
 }

 post请求接收json格式数据

    axios({
        url:'http://localhost:8080/post/test',
        data:{
            'username':'swx'
        },
        method:'post'
    }).then(res=>{
        console.log(res.data.data)
    })

后端接口
@PostMapping("/post/test")
    public ResResult getUserByIdPostTest(@RequestBody User user){
        LambdaQueryWrapper wrapper = new LambdaQueryWrapper();
        wrapper.eq(User::getUsername,user.getUsername());
        User users = userService.getOne(wrapper);
        return ResResult.okResult(users);
    }

3、请求简写方式&请求失败处理 

get无参请求

    axios.get('http://localhost:8080/get/getAll').then(res=>{
        console.log(res.data.data)
    }).catch(err=>{
        console.log('timeout')
        console.log(err)
    })

get有参请求,post方式不可以这样请求

    axios.get('http://localhost:8080/get',{params:{id:'2',username:'swx'}}).then(res=>{
        console.log(res.data.data)
    }).catch(err=>{
        console.log('timeout')
        console.log(err)
    })

 post有参请求，以json格式请求

    axios.post('http://localhost:8080/post',"id=2&username=swx").then(res=>{
        console.log(res.data.data)
    }).catch(err=>{
        console.log('timeout')
        console.log(err)
    })

也可以一下方式，但是后端要加@RequestBody注解

    axios.post('http://localhost:8080/post/test',{username:'swx'}).then(res=>{
        console.log(res.data.data)
    }).catch(err=>{
        console.log('timeout')
        console.log(err)
    })

axios并发请求

    axios.all([
        axios.get('http://localhost:8080/get/getAll'),
        axios.get('http://localhost:8080/get/get',{params:{id:'1'}})
    ]).then(res=>{
        //返回的是数组，请求成功返回的数组
        console.log(res[0].data.data),
        console.log(res[1].data.data)
    }).catch(err=>{
        console.log(err)
    })

后端接口
@GetMapping("/get/getAll")
    public ResResult getAllUser(){
        List list = userService.list();
        return ResResult.okResult(list);
    }
@GetMapping("/get/get")
    public ResResult getUserByIdt(@RequestParam("id") Long id){
        User user = userService.getById(id);
        return ResResult.okResult(user);
    }

 方式2：使用spread方法处理返回的数组

    axios.all([
        axios.get('http://localhost:8080/get/getAll'),
        axios.get('http://localhost:8080/get/get',{params:{id:'1'}})
    ]).then(
        //高端一些
        axios.spread((res1,res2)=>{
            console.log(res1.data.data),
            console.log(res2.data.data)
        })
    ).catch(err=>{
        console.log(err)
    })

axios全局配置

    axios.defaults.baseURL='http://localhost:8080'; //全局配置属性
    axios.defaults.timeout=5000; //设置超时时间
    //发送请求
    axios.get('get/getAll').then(res=>{
        console.log(res.data.data)
    });
    axios.post('post/getAll').then(res=>{
        console.log(res.data.data)
    });

axios实例 

    //创建实例
    let request = axios.create({
        baseURL:'http://localhost:8080',
        timeout:5000
    });
    //使用实例
    request({
        url:'get/getAll'
    }).then(res=>{
        console.log(res.data.data)
    });
    request({
        url:'post/getAll',
        method:'post'
    }).then(res=>{
        console.log(res.data.data)
    })

Axios各种参数携带方式详解 - 知乎 (zhihu.com)