本篇主要介绍。

npm install axios

baseURL为代理地址，在前一篇文章有配置。将’/urlApi’替代’http://localhost:8060‘跨域。

// 从axios源码中可知，axios实例的类型为AxiosInstance，响应的数据类型为AxiosResponse，请求需要传入的参数类型为AxiosRequestConfig
import axios, {AxiosInstance, AxiosError, AxiosResponse, AxiosRequestConfig} from 'axios';
const service:AxiosInstance = axios.create({
    baseURL: '/urlApi',
    // baseURL: 'http://localhost:8060',
    timeout: 5000,
    //跨域携带cookie
    withCredentials: true
});

// 添加请求拦截器
service.interceptors.request.use(
    (config: AxiosRequestConfig) => {
        return config;
    },
    (error: AxiosError) => {
        console.log(error);
        return Promise.reject();
    }
);

// 添加响应拦截器
service.interceptors.response.use(
    (response: AxiosResponse) => {

        console.log("response:",response);
        if (response.status === 200) {
            return response;
        } else {
            Promise.reject();
        }
    },
    (error: AxiosError) => {
        console.log(error);
        return Promise.reject();
    }
);

export default service;

import request from '../utils/request';

export const fetchData = () => {
    return request({
        url: './table.json',
        method: 'get'
    });
};
export const testData = (data: any) => {
    return request({
        url: 'test/vueTest',
        method: 'post',
        data,
    });
};

在.vue文件里使用，向后端传输数据data

// 使用axios通信
import { onMounted } from 'vue'
import {
  testData
} from "../api/index"
let data = {username: 'admin'};
onMounted(() => {
  testData(
      data
  ).then(res => {
    console.log('login response data', res)
  })
})

在模块/test下，s所以完整的地址为"http://localhost:4000/urlApi/test/vueTest"。
@RequestBody接收数据，同时传送username。

@RequestMapping(value = "/vueTest", method = RequestMethod.POST)
    @ResponseBody
    //
    public String vueTest(HttpSession session, @RequestBody String data){
        System.out.println("后台打印："+data);
        String username = (String) session.getAttribute("username");
        return username;
    }

后台接收到成功打印data，axios成功接收username。