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Vue如何使用本地JSON文件

 更新時(shí)間:2024年07月26日 09:25:38   作者:飛宙  
這篇文章主要介紹了Vue如何使用本地JSON文件問(wèn)題,具有很好的參考價(jià)值,希望對(duì)大家有所幫助,如有錯(cuò)誤或未考慮完全的地方,望不吝賜教

Vue使用本地JSON文件

1:通過(guò)js的方式

在公共文件夾下創(chuàng)建bank.json(我是放在json下面),賦值到定義好的字段就可以使用了

import bankList from '../../json/tb_card_bank.json';

return {
  bankArray:bankList.RECORDS,
}

2:通過(guò)axios的方式

1、先安裝axios: npm install axios --save

2、main.js 文件引入(全局引入)

import axios from 'axios'          //引入axios
Vue.prototype.$axios = axios;      //把a(bǔ)xios掛載到vue上

2、進(jìn)行請(qǐng)求

//獲取銀行數(shù)據(jù)
    getBankList(){
        this.$axios.get("../../json/tb_card_bank.json").then((res)=>{
             console.log("有銀行么:",res)
        }).catch(() => {
              response.errer
              this.$message({
              message: response.errer.msg
                 })
              })
    },

給一個(gè)json文件,然后根據(jù)要求生成一個(gè)Json文件

提供的 json文件如圖

生成文件為第二種

要求:

  • 1.沒(méi)有id的對(duì)象不需要轉(zhuǎn)換
  • 2.id>=8000的對(duì)象不需要轉(zhuǎn)換
  • 3.在id轉(zhuǎn)換成name的時(shí)候,在id前加上“flaw_type_”拼接成name
  • nickName是show屬性的轉(zhuǎn)換
  • 子對(duì)象的nickName 是父對(duì)象的屬性名為Attributes的兄弟對(duì)象的show屬性加上“_”下劃線(xiàn),再加自身的show屬性拼接而成。

1.獲取文件內(nèi)容

<script>
 import d from './params.json'
 //直接獲取值
  created() {
    this.Gdata = d;
    // this.arrP();
    // console.log("data",d)
  },
</script>

2.組成新的內(nèi)容

  methods: {
    btn() {
      var listt = {}; //重組數(shù)組存放位置
      for (var i in this.Gdata) {
        var id = this.Gdata[i].Attributes.id; //第一層id
        var show = this.Gdata[i].Attributes.show; //第一層name
        if (this.Gdata[i]["Attributes"] != undefined) { //判斷第一層是否有值
          if (id!=null && id < 8000 && show != undefined) {
            var obj = {};
            obj.name = "flaw_type_" + id;
            obj.nickName = this.Gdata[i].Attributes.show;
            listt.push(obj);
          }
        } 
          for (var j in this.Gdata[i]) {//開(kāi)始循環(huán)判斷第二層
            if (
              j != "Attributes" &&
              this.Gdata[i][j]["Attributes"] != undefined
            ) {
              // console.log(
              //   j,
              //   "第1",
              //   this.Gdata[i][j].Attributes.id,
              //   this.Gdata[i][j].Attributes.show
              // );
              var id1 = this.Gdata[i][j].Attributes.id;
              var show1 = this.Gdata[i][j].Attributes.show;
              if (id1 != null && id1 < 8000 && show1 != undefined) {
                var obj = {};
                obj.name = "flaw_type_" + id1;
                obj.nickName = show + "_" + show1;
              }
              listt.push(obj);
              // console.log("不知道sss", listt);
            } else {
              // console.log(j, "第2", this.Gdata[i][j].id);
            }
        }
        console.log("最終",listt)
      }
      //下載數(shù)據(jù)
      //將數(shù)據(jù)轉(zhuǎn)化為Json格式
      var js = JSON.stringify(listt);
      //創(chuàng)建一個(gè)文本blob對(duì)象
      var  blob = new Blob([js],{type:'application/json'})
      //構(gòu)造下載連接
      const url = URL.createObjectURL(blob)
      //創(chuàng)建下載連接的A標(biāo)簽
      const a = document.createElement('a')
      a.href = url
      a.download  = 'target_sample.json'
      //模擬點(diǎn)擊下載連接
      document.body.appendChild(a)
      a.click()
      document.body.removeChild(a)
      //釋放資源
      URL.revokeObjectURL(url)
    }

3.生成json文件(本地)

//vue里面
<el-button @click="btn()">點(diǎn)擊生成json文件</el-button>
//方法
  methods: {
    btn() {
      var listt = {}; //重組數(shù)組存放位置
      //下載數(shù)據(jù)
      //將數(shù)據(jù)轉(zhuǎn)化為Json格式
      var js = JSON.stringify(listt);
      //創(chuàng)建一個(gè)文本blob對(duì)象
      var  blob = new Blob([js],{type:'application/json'})
      //構(gòu)造下載連接
      const url = URL.createObjectURL(blob)
      //創(chuàng)建下載連接的A標(biāo)簽
      const a = document.createElement('a')
      a.href = url
      a.download  = 'target_sample.json'
      //模擬點(diǎn)擊下載連接
      document.body.appendChild(a)
      a.click()
      document.body.removeChild(a)
      //釋放資源
      URL.revokeObjectURL(url)
    }

全部代碼

1.json文件:

{
    "g_unKown": {
        "Attributes": {
            "alarmnum": 10,
            "analysis": false,
            "color": "#ff6600",
            "id": 8000
        }
    },
    "主要缺陷": {
        "Attributes": {
            "color": "#aa0000",
            "enable": true,
            "algorithm_id":1913,
            "id": 1300,
            "show": "大型缺陷"
        },
        "Level_0": {
            "Attributes": {
                "color": "#bb0000",
                "enable": true,
                "algorithm_id":1913,
                "id": 1301,
                "show": "可見(jiàn)"
            }
        },
        "Level_1": {
            "Attributes": {
                "color": "#aa0010",
                "enable": true,
                "algorithm_id":1413,
                "id": 1302,
                "show": "不可見(jiàn)"
            }
        },
        "min": {
            "show": "最小像素?cái)?shù)",
            "unit": "個(gè)",
            "value": 25
        }
    },
    "顏色缺陷": {
        "Attributes": {
            "color": "#aa0010",
            "enable": true,
            "algorithm_id":913,
            "id": 1200,
            "show": "白點(diǎn)"
        },
        "Level_0": {
            "Attributes": {
                "color": "#aa0010",
                "enable": true,
                "algorithm_id":1413,
                "id": 1201,
                "show": "微小白點(diǎn)"
            }
        },
        "Level_1": {
            "Attributes": {
                "color": "#aa0010",
                "enable": true,
                "algorithm_id":1413,
                "id": 1202,
                "show": "小白點(diǎn)"
            }
        },
        "Level_2": {
            "Attributes": {
                "color": "#aa0010",
                "enable": true,
                "algorithm_id":1413,
                "id": 1203,
                "show": "中白點(diǎn)"
            }
        },
        "Level_3": {
            "Attributes": {
                "color": "#aa0010",
                "enable": true,
                "algorithm_id":63,
                "id": 1204,
                "show": "大白點(diǎn)"
            }
        },
        "Level_4": {
            "Attributes": {
                "color": "#aa0010",
                "enable": true,
                "algorithm_id":213,
                "id": 1205,
                "show": "超大白點(diǎn)"
            }
        }
    },
    "紋路": {
        "Attributes": {
            "color": "#aa0010",
            "enable": true,
            "algorithm_id":1413,
            "id": 1700,
            "show": "劃痕/劃傷"
        },
        "Level_0": {
            "Attributes": {
                "color": "#aa0010",
                "enable": true,
                "algorithm_id":23,
                "id": 1701,
                "show": "條紋"
            }
        },
        "ashow": {
            "max": 50,
            "show": "橫條紋靈敏度",
            "unit": "等級(jí)",
            "value": 10
        },
        "minLineHeight": {
            "max": 50,
            "show": "最小條紋長(zhǎng)度",
            "unit": "等級(jí)",
            "value": 10
        },
        "verLineFliterGradient": {
            "max": 50,
            "show": "豎條紋靈敏度",
            "unit": "等級(jí)",
            "value": 0
        }
    },
    "webconfig":{
        "Attributes": {
            "host":"192.168.1.1",
            "port":"8008"
        }
    }
}

2.vue文件:

<template>
    <div id="app">
      <div>
        <el-button @click="btn()">點(diǎn)擊生成json文件</el-button>
      </div>
    </div>
  </template>
  
  <script>
  import d from "./params.json";
  export default {
    data() {
      return {
        Gdata: null,
        SelectId: [], // 已選列表
        arrList: [
          12, 12, 12, 12, 12, 1234, 1234567, 1234, 12, 12, 1234567812345678, 12,
        ],
      };
    },
    computed: {
    },
    created() {
      this.Gdata = d;
      console.log("d",this.Gdata)
    },
    methods: {
      btn() {
        var listt = []; //重組數(shù)組存放位置
        for (var i in this.Gdata) {
          var id = this.Gdata[i].Attributes.id; //第一層id
          var show = this.Gdata[i].Attributes.show; //第一層name
          if (this.Gdata[i]["Attributes"] != undefined) { //判斷第一層是否有值
            if (id!=null && id < 8000 && show != undefined) {
              var obj = {};
              obj.name = "flaw_type_" + id;
              obj.nickName = this.Gdata[i].Attributes.show;
              console.log("obj",obj)
              listt.push(obj);
            }
          } 
            for (var j in this.Gdata[i]) {//開(kāi)始循環(huán)判斷第二層
              if (
                j != "Attributes" &&
                this.Gdata[i][j]["Attributes"] != undefined
              ) {
                // console.log(
                //   j,
                //   "第1",
                //   this.Gdata[i][j].Attributes.id,
                //   this.Gdata[i][j].Attributes.show
                // );
                var id1 = this.Gdata[i][j].Attributes.id;
                var show1 = this.Gdata[i][j].Attributes.show;
                if (id1 != null && id1 < 8000 && show1 != undefined) {
                  var obj = {};
                  obj.name = "flaw_type_" + id1;
                  obj.nickName = show + "_" + show1;
                }
                listt.push(obj);
                // console.log("不知道sss", listt);
              } else {
                // console.log(j, "第2", this.Gdata[i][j].id);
              }
          }
          console.log("最終",listt)
        }
        //下載數(shù)據(jù)
        //將數(shù)據(jù)轉(zhuǎn)化為Json格式
        var js = JSON.stringify(listt);
        //創(chuàng)建一個(gè)文本blob對(duì)象
        var  blob = new Blob([js],{type:'application/json'})
        //構(gòu)造下載連接
        const url = URL.createObjectURL(blob)
        //創(chuàng)建下載連接的A標(biāo)簽
        const a = document.createElement('a')
        a.href = url
        a.download  = 'target_sample.json'
        //模擬點(diǎn)擊下載連接
        document.body.appendChild(a)
        a.click()
        document.body.removeChild(a)
        //釋放資源
        URL.revokeObjectURL(url)
      },
      // selectFun(id) {
      //   if (!this.SelectId.includes(id)) {
      //     this.SelectId.push(id); // 判斷已選列表中是否存在該id,不是則追加進(jìn)去
      //   } else {
      //     let index = this.SelectId.indexOf(id); // 求出當(dāng)前id的所在位置
      //     this.SelectId.splice(index, 1); // 否則則刪除
      //   }
      // },
      //數(shù)組排序:
      arrP() {
        var l1 = []; //25%  2,1
        var l2 = []; //50%  4,3
        var l3 = []; //100% 5-無(wú)窮
        this.arrList.forEach((i) => {
          var il = i.toString().length;
          if (il > 0 && il <= 2) {
            l1.push(i);
          }
          if (il >= 3 && il <= 4) {
            l2.push(i);
          }
          if (5 <= il) {
            l3.push(i);
          }
        });
        // console.log(l1)
        // console.log(l2)
        // console.log(l3)
        console.log("l1", l1.length);
        if (l1.length > 4) {
          // this.getMApp(l1)
          const len = l1.length;
          let result = [];
          const sliceNum = 4;
          console.log("dd", len % sliceNum);
          //分割
          for (let i = 0; i < len / sliceNum; i++) {
            result.push(l1.slice(i * sliceNum, (i + 1) * sliceNum));
          }
          console.log("res", result);
          //補(bǔ)全
          for (let j = 0; j < sliceNum - (len % sliceNum); j++) {
            console.log("ddd", result[1]);
            // result[result.length - 1].push({});
          }
          // console.log("ew",result);
        }
        console.log("l1", l1);
        this.arrList = [];
        this.arrList.push(l1);
        this.arrList.push(l2);
        this.arrList.push(l3);
        console.log(this.arrList);
      },
      //分割數(shù)組
      getMApp(list) {
        console.log("map", list);
        let len = list.length;
        let newList = [];
        if (len) {
          var chunk = 4;
          for (var i = 0, j = len; i < j; i += chunk) {
            newList.push(list.slice(i, i + chunk).join(","));
          }
        }
        return newList;
      },
    },
  };
  </script>
  <style lang="less" scoped>
  * {
    color: #333;
    box-sizing: border-box;
    user-select: none;
  }
  .CheckBox {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    margin: 50px auto;
    margin-bottom: 20px;
  }
  .CheckItem {
    display: flex;
    margin: 0px 30px 30px 0px;
    align-items: center;
  }
  .select {
    width: 20px;
    height: 20px;
    border-radius: 2px;
    border: 1px solid #ccc;
    display: flex;
    justify-content: center;
    cursor: pointer;
    margin-right: 10px;
    align-items: center;
  }
  .selectActv::before {
    display: block;
    content: "";
    width: 5px;
    height: 12px;
    border-bottom: 2px solid #aaa;
    border-right: 2px solid #aaa;
    transform: rotate(45deg);
  }
  .selectAll {
    display: flex;
  }
  .content {
    width: 500px;
    margin: 120px auto;
  }
  .obj {
    background: rgb(228, 197, 203);
    height: 1000px;
  }
  .c1 {
    width: 100%;
    height: 50px;
    // display: flex;
  }
  .c2 {
    width: 50%;
    height: 50px;
    display: flex;
  }
  .c3 {
    width: 100%;
    height: 50px;
    display: flex;
  }
  .c3 .t {
    width: 10px;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  </style>

總結(jié)

以上為個(gè)人經(jīng)驗(yàn),希望能給大家一個(gè)參考,也希望大家多多支持腳本之家。

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