fetchData() { this.axios .get("/api/getQuestionList", { params: { questionnaireId: this.$route.params.id, }, }) .then((res) => { const tempList = res.data["questionList"]; const resList = []; for (const t of tempList) { t["date"] = new Date(t["date"]); resList.push(t); } this.questionList = resList; if (this.$store.state.a == 0) { this.$message({ message: "问卷已读取", duration: 1000 }); console.log(this.$store.state.a) } else { this.$store.commit('set0') } }) .catch(() => { this.$message({ message: "error！问卷读取失败！", duration: 1000 }); }); this.axios .get("/api/getQuestionnaireOutline", { params: { questionnaireId: this.$route.params.id, }, }) .then((res) => { const temp = { questionnaireDescription: res.data["questionnaire"]["description"], questionnaireTitle: res.data["questionnaire"]["title"], questionnaireId: res.data["questionnaire"]["questionnaireId"], endTime: res.data["questionnaire"]["endTime"], }; this.questionnaire = temp; this.value2 = this.questionnaire.endTime; }) .catch(() => { this.$message({ message: "error！问卷概况读取失败！", duration: 1000, }); }); },解释这段代码

这段代码是一个名为fetchData的方法。它使用axios库发送两个HTTP GET请求来获取问卷数据。

第一个请求是发送到"/api/getQuestionList"端点，使用params参数指定了问卷的ID。服务器将返回一个包含问题列表的响应。代码中首先将响应数据中的questionList字段赋给tempList变量，然后使用循环遍历tempList中的每个元素，并为每个元素的date属性创建一个新的Date对象，并将修改后的元素推入resList数组中。最后，将resList赋值给questionList变量。

第二个请求是发送到"/api/getQuestionnaireOutline"端点，同样使用params参数指定了问卷的ID。服务器将返回一个包含问卷概况信息的响应。代码中将响应数据中的问卷描述、标题、ID和结束时间等字段提取出来，创建一个包含这些信息的对象temp，并将temp赋给questionnaire变量。同时，将questionnaire.endTime赋值给value2变量。

如果请求成功，会根据this.$store.state.a的值进行条件判断。如果为0，则显示一条消息提示问卷已读取，并在控制台打印this.$store.state.a的值；否则，调用this.$store.commit('set0')方法。

如果请求失败，会显示一条错误消息提示问卷读取失败。

总结来说，这段代码通过两个HTTP GET请求获取了问卷的问题列表和概况信息，并根据请求结果进行相应的处理和提示。

相关问题

this.$axios.get和 this.axios.get的区别

this.$axios.get 是在Vue实例的上下文中使用axios实例的方式，可以直接在Vue组件的methods中使用，例如：

export default {
    methods: {
        async fetchData() {
            const response = await this.$axios.get('/api/data');
            console.log(response.data);
        }
    }
}

this.axios.get 则需要先导入axios库，然后再使用，例如：

import axios from 'axios';

export default {
    methods: {
        async fetchData() {
            const response = await axios.get('/api/data');
            console.log(response.data);
        }
    }
}

总结来说，this.$axios.get 是使用Vue插件的方式来使用axios，而 this.axios.get 则需要手动导入axios库。

this.$axios.get

I am sorry, as an AI language model, I cannot access external APIs or libraries. However, I can provide you with information about the syntax and usage of the `$axios.get` method in the context of web development.

`$axios` is a popular HTTP client library used for sending HTTP requests from a web application. It is often used in Vue.js applications to interact with a remote server and fetch data.

The `.get` method is used to make a GET request to a specified URL. It takes one parameter, the URL to which the request should be sent. Here is an example of using `$axios.get` method to fetch data from an API:

import axios from 'axios'

axios.get('https://api.example.com/data')
  .then(response => {
    console.log(response.data)
  })
  .catch(error => {
    console.log(error)
  })

In this example, the `$axios` library is imported as `axios`. The `.get` method is then called with the URL of the API endpoint as the argument. The response from the API is handled using a `.then` method, which logs the returned data to the console. If an error occurs, it is caught using the `.catch` method and logged to the console as well.