如何在Vue中从axios返回响应

Question

我阅读了有关堆栈溢出的所有已回答问题，但仍然无法弄清楚如何进行这项工作。

File1.js

我使用 axios ajax 调用将一些数据发送到服务器，如下所示：

function ajaxSearchAxios(searchType,searchText){ 
    var searchResults=[];
    axios({
        method: 'post',
        url: 'ajaxSearch/',
        data: {
              searchType: searchType,
              searchText: searchText,
            },
        responseType: 'json',
      })
      .then ( function (response){
          searchResults = response.data['searchResults']; console.log('JS searchResults=',searchResults[0].value) //this prints nicely to the console
          return searchResults

      })
      .catch ( function (error){
        console.log('ajaxSearch error'); 
      });
}

File2.js

这里有我的 Vue 代码，我想在其中获取 ajaxSearchAxios() 的输出并存储在 Vue 数据中。

new Vue({
    el:'#id_1',
    data:{
            SearchResults:[],
    },
    methods:{
        ajaxSearch:function(searchType){
            this.SearchResults= ajaxSearchAxios('s','s1');
            console.log('VUE =',this.SearchResults[0].value)
        },
    },
});

谢谢

Answer 1

Vue 中来自 axios 的异步调用：

var v1 = new Vue({
    el: '#id_mainPage',
    data: {
        branches: [''],
    },
    methods: {
        ajaxAxiosGetFunc: async function (url) {
            var output = '';
            await axios({
                method: 'get',
                url: url,
                data: {},
                responseType: 'json',
            })
                .then(function (response) {
                    output = response.data;
                }.bind(this))
                .catch(function (error) {
                    console.log('ajax get branches error');
                });
            return output
        },

        getAllBranchNames: async  function(){
            var output = await this.ajaxAxiosGetFunc('http://localhost:9977/get_branches');  // called asynchronously to wait till we get response back
            this.branches = output['branches'];
        },
    },
    mounted: function () {
        console.log('Vue mounted');
        this.getAllBranchNames();
    }
});

Answer 2

请记住，您正在处理异步函数，因此您的函数需要以 Promise 的形式返回和处理功能

function ajaxSearchAxios(searchType,searchText){ 
    return axios({ // <--- return the PROMISE
        method: 'post',
        url: 'ajaxSearch/',
        data: {
              searchType: searchType,
              searchText: searchText,
            },
        responseType: 'json',
      })
      .then ( function (response){
          return response.data['searchResults']; 
      })
      .catch ( function (error){
        console.log('ajaxSearch error'); 
      });
}

然后把它当作一个promise来处理，而不是把函数赋值给值

new Vue({
    el:'#id_1',
    data:{
            SearchResults:[],
    },
    methods:{
        ajaxSearch:(searchType) => {
            // execute axios promise and on success, assign result to var
            ajaxSearchAxios('s','s1').then(result => this.SearchResults = result)
        },
    },
});

Answer 3

我假设调用ajaxSearchAxios 正在工作并且您已正确导入file1。如果是这样，axios返回一个promise，所以尝试返回axios obj并在vue中使用async和await等待这样的结果...

function ajaxSearchAxios(searchType,searchText){ 
    var searchResults=[];
    return axios({
        method: 'post',
...

new Vue({
    el:'#id_1',
    data:{
            SearchResults:[],
    },
    methods:{
        ajaxSearch: async searchType => {
            this.SearchResults = await ajaxSearchAxios('s','s1');
            console.log('VUE =',this.SearchResults[0].value)
        },
    },
});