请问大家 vue 接口请求的时候，请求成功200 并且后端数据也有返回为什么会走catch？

Z时代
2024-02-25
分类：IT

一个登录的接口，点击的时候，后端数据也返回登录成功了，传参账户密码也没问题，但是就是没走.then() 走了 .catch 不知道什么原因？

网上搜的 .then 里有代码错误，这里的代码已经都注释了，

handleLogin() {

  // loginForm表单验证
  this.$refs.loginForm.validate(valid => {
    // 验证成功
    if (valid) {
      this.loading = true
      // 派发到store的user/login action
      this.$store
        .dispatch('user/login', this.loginForm)
        .then(() => {
          // 登录成功
          // 路由到首页，指定query参数
          this.$router.push({
            path: this.redirect || '/',
            query: this.otherQuery
          })
          this.loading = false
        })
        .catch(() => {
          // 异常
          console.log('一直在走这')
          this.loading = false
        })
    } else {
      console.log('error submit!!')
      return false
    }
  })
},

login代码：

import request from '@/utils/request'
export function login(data) {
  return request({ 
    url: '/admin/Admin/Login',
    method: 'post',
    data
  })}

请求代码：

import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'
// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 5000, // request timeout
  // crossDomain: true
})
// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent
    if (store.getters.token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      config.headers['Auth-token'] = getToken()
    } 
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug 
    return Promise.reject(error)
  }
)
// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
  */
  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    const res = response.data
    // if the custom code is not 20000, it is judged as an error.
    if (res.code !== 201) {
      Message({
        message: res.message || 'Error',
        type: 'error',
        duration: 5 * 1000
      })
      // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
      if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
        // to re-login
        MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
          confirmButtonText: 'Re-Login',
          cancelButtonText: 'Cancel',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/resetToken').then(() => {
            location.reload()
          })
        })
      }
      return Promise.reject(new Error(res.message || 'Error'))
    } else {
      return res
    }
  },
  error => {
    console.log('err' + error) // for debug
    Message({
      message: error.message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)
export default service