vue怎么导入excel文件和多个sheets

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html 导入按钮和选择文件的弹框

      <el-button v-waves :loading='downloadLoading' class='filter-item' type='primary' icon='el-icon-download' @click='daoru'>
        导入
      </el-button>
      <el-dialog title="导入文件" :visible.sync="excelImportShow">
        <a rel="external nofollow" href="javascript:;" rel="external nofollow"  class="file">
          <input id="upload" type="file" @change="importfxx(this)" accept=".csv, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/vnd.ms-excel" />
        </a>
        <div id="demo"></div>
        <div slot="footer" class="dialog-footer">
          <el-button @click.native="excelImportShow = false">取消</el-button>
          <el-button type="primary" @click.native="submit">提交</el-button>
        </div>
      </el-dialog>

js 重中之重 导入 excel 开始啦

1.data里面的数据

JavaScript

        excelImportShow: false,  //导入文件的弹框
        uploadArr: [],   // 上传给后台的数据
        realname: '',  // 以下都是我要转换的数据,因人而异
        gender: '',
        age: '',
        minzu: '',
        wenhua: '',
        shengfenzheng: '',
        job: '',
        mobile: '',
        mark: ''

2. 导入弹框

JavaScript

      daoru() {
        this.excelImportShow = true
      },

3. 导入方法

JavaScript

      // 导入
      importfxx(obj) {
        let _this = this;
        let inputDOM = this.$refs.inputer;
        // 通过DOM取文件数据
        this.file = event.currentTarget.files[0];
        var rABS = false; //是否将文件读取为二进制字符串
        var f = this.file;
        var reader = new FileReader();
        FileReader.prototype.readAsBinaryString = function(f) {
          var binary = "";
          var rABS = false; //是否将文件读取为二进制字符串
          var pt = this;
          var wb; //读取完成的数据
          var outdata;
          var reader = new FileReader();
          reader.onload = function(e) {
            var bytes = new Uint8Array(reader.result);
            var length = bytes.byteLength;
            for (var i = 0; i < length; i++) {
              binary += String.fromCharCode(bytes[i]);
            }
            var XLSX = require('xlsx');
            if (rABS) {
              wb = XLSX.read(btoa(fixdata(binary)), { //手动转化
                type: 'base64'
              });
            } else {
              wb = XLSX.read(binary, {
                type: 'binary'
              });
            }
            outdata = XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]]); //outdata就是你想要的东西
            this.da = [...outdata]
            let arr = []
            let nameArr = outdata[1]
            for (let v in nameArr) {
            // 拿到 excel 里面的列名,根据列名得到里面的键名
              let title = nameArr[v]
              switch (title){
                case '姓名':
                console.log('这是姓名',nameArr[v]);
                _this.realname = v
                console.log('这是realname',v);
                  break;
                case '性别':
                console.log('这是性别',nameArr[v]);
                _this.gender = v
                console.log('这是gender',v);
                  break;
                case '年龄':
                console.log('这是年龄',nameArr[v]);
                _this.age = v
                console.log('这是age',v);
                  break;
                case '民族':
                console.log('这是民族',nameArr[v]);
                _this.minzu = v
                console.log('这是minzu',v);
                  break;
                case '学历':
                console.log('这是性别',nameArr[v]);
                _this.wenhua = v
                console.log('这是job',v);
                  break;
                case '身份证号':
                console.log('这是身份证号',nameArr[v]);
                _this.shengfenzheng = v
                console.log('这是shenfengzheng',v);
                  break;
                case '工作单位/学校/社区':
                console.log('"工作单位/学校/社区"',nameArr[v]);
                _this.job = v
                console.log('这是job',v);
                  break;
                case '手机/电话':
                console.log('这是手机/电话',nameArr[v]);
                _this.mobile = v
                console.log('这是mobile',v);
                  break;
                case '备注':
                console.log('这是备注',nameArr[v]);
                _this.mark = v
                console.log('这是mark',v);
                  break;
                default:
                  break;
              }
            }
            let obj
            let uploadArr = []
            // 这里是一个excel里面会有多个sheets,把里面的恶数据整个到这个数组里面一起上传
            let leng = Object.keys(wb.Sheets).length
            // 用for循环,leng 是sheets的个数,用来循环次数
            for (var i = 0; i < leng+1; i++) {
              XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[i]])
              let arrr = XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[i]])
              arrr = arrr.slice(2)        //如果从第三行开始是数据,那这里就是1,如果从第四行开始是数据,那这里就是2
              uploadArr.push.apply(uploadArr,arrr)
              _this.uploadArr = uploadArr
            }
            this.da.map(v => {
              let obj = {}
              obj.id = v.id
              obj.status = v.status
              arr.push(obj)
            })
            let para = {
              withList: arr
            }
            _this.$message({
              message: '请耐心等待导入成功',
              type: 'success'
            });
          }
          reader.readAsArrayBuffer(f);
        }
        if (rABS) {
          reader.readAsArrayBuffer(f);
        } else {
          reader.readAsBinaryString(f);
        }
      },

4.确认导入

(其实这里就是上传到后台接口的,存到数据库里面才能保存)

JavaScript

      // 确认导入
      submit() {
        let uploadArr = this.uploadArr
        this.excelImportShow = false
        let obj
        for (let v in uploadArr) {
          obj = {realname:uploadArr[v][""+this.realname+""],
          age:uploadArr[v][""+this.age+""],
          gender: uploadArr[v][""+this.gender+""]=='男'?'MALE':'FEMALE',
          minzu: uploadArr[v][""+this.minzu+""],
          wenhua: uploadArr[v][""+this.wenhua+""],
          shengfenzheng: uploadArr[v][""+this.shengfenzheng+""],
          job: uploadArr[v][""+this.job+""],
          wenhua: uploadArr[v][""+this.wenhua+""],
          mobile:uploadArr[v][""+this.mobile+""],
          mark:uploadArr[v][""+this.mark+""],
          place: "00"}
          // 这里的obj 就是后台需要的参数,用变量表示键名 [""+此处是你的变量+""]
          createUser(obj).then((res) => {
          这是后台添加的方法
            if (res.data.return_code === '200') {
              this.dialogFormVisible = false
            } else {
              this.$notify.error(res.data.return_msg)
            }
          })
          if (parseInt(v) === parseInt(uploadArr.length)-1) {
            console.log(v+'和'+uploadArr.length);
            setTimeout(()=>{
              this.$notify({
                title: '成功',
                message: '创建成功',
                type: 'success',
                duration: 2000
              })
              this.getList({ page: 1,limit: 20 })
              // 添加成功之后调用list 接口,展示所添加的数据
            },1500)
          }
        }
      },

vue导入处理excel表格

1.vue导入Excel表格

vue导入Excel表格主要有两种常用的方法,一个是借助ElementUI文件上传进行表格导入,另一个是自带的input做文件上传;以下对两个方法做详细介绍;

1.1 使用ElementUI中的upload组件 安装ElementUI

JavaScript

npm i element-ui -S

安装Excel表格解析插件

JavaScript

 npm i xlsx -S

导入需要用的工具包

JavaScript

import Vue from "vue";
import ElementUI from "element-ui";
import "element-ui/lib/theme-chalk/index.css";
import { read, utils } from "xlsx"; // 注意处理方法引入方式
Vue.use(ElementUI);

引入组件

<el-upload
        action="https://jsonplaceholder.typicode.com/posts/"
        :on-success="handleChange"
        :file-list="fileList"
        class="el-upload"
      >

添加处理逻辑

JavaScript

// 导入成功时执行
handleChange(res, file, fileList) {
      // 将文件放入
      for (let i = 0; i < fileList.length; i++) {
        if (file.name != fileList[i].name) {
          this.fileList.push({
            name: file.name,
            url: "",
            uid: file.uid
          });
        }
      }
      const files = { 0: file };
      this.readExcel(files);
    },
    readExcel(file) {
      const fileReader = new FileReader();
      fileReader.onload = ev => {
        try {
          const data = ev.target.result;
          const workbook = read(data, { type: "binary" });
          const params = [];
          // 取对应表生成json表格内容
          workbook.SheetNames.forEach(item => {
            this.tableData.push(utils.sheet_to_json(workbook.Sheets[item]));
          });
          // 该算法仅针对表头无合并的情况
          if (this.tableData.length > 0) {
            // 获取excel中第一个表格数据tableData[0][0],并且将表头提取出来
            for (const key in this.tableData[0][0]) {
              this.tableHead.push(key);
            }
          }
          // 重写数据
        } catch (e) {
          console.log("error:" + e);
          return false;
        }
      };
      fileReader.readAsBinaryString(file[0].raw);
    }

以上处理的数据我这边用组件展示在了页面上,效果如下图:

1.2 使用input文件上传 安装Excel表格解析插件

JavaScript

npm i xlsx -S

导入需要用的工具包

JavaScript

import { read, utils } from "xlsx"; // 注意处理方法引入方式

使用input

<div class="flex-display">
      <div class="left-box">文件上传(input):</div>
      <input type="file" v-on:change="onChange" class="file-ipt" />
    </div>

添加处理逻辑

基本与上面处理逻辑相同

JavaScript

onChange(e) {
      const file = e.target.files[0];
      const fileReader = new FileReader();
      fileReader.onload = ev => {
        try {
          const data = ev.target.result;
          const workbook = read(data, { type: "binary" });
          const params = [];
          // 取对应表生成json表格内容
          workbook.SheetNames.forEach(item => {
            params.push({
              name: item,
              dataList: utils.sheet_to_json(workbook.Sheets[item])
            });
            this.tableData.push(utils.sheet_to_json(workbook.Sheets[item]));
          });
          // 该算法仅针对表头无合并的情况
          if (this.tableData.length > 0) {
            // 获取excel中第一个表格数据tableData[0][0],并且将表头提取出来
            for (const key in this.tableData[0][0]) {
              this.tableHead.push(key);
            }
          }
          return params;
          // 重写数据
        } catch (e) {
          console.log("error:" + e);
          return false;
        }
      };
      fileReader.readAsBinaryString(file);
    }

2. 总体代码与效果

效果如下:

总的样式以及代码如下:

<template>
  <div>
    <div class="flex-display">
      <div class="left-box">表格上传(ElementUI):</div>
      <el-upload
        action="https://jsonplaceholder.typicode.com/posts/"
        :on-success="handleChange"
        :file-list="fileList"
        class="el-upload"
      >
        <el-button size="small" type="primary" class="el-btn"
          >点击上传</el-button
        >
        <div slot="tip" class="el-upload-tip">
          只能上传xlsx文件,且不超过5MB
        </div>
      </el-upload>
    </div>
    <el-table v-if="tableHead.length" :data="tableData[0]" >
      <el-table-column
        v-for="(data, key) in tableHead"
        :prop="data"
        :label="data"
        :key="key"
        width="180"
      >
      </el-table-column>
    </el-table>
    <div class="flex-display">
      <div class="left-box">文件上传(input):</div>
      <input type="file" v-on:change="onChange" class="file-ipt" />
    </div>
  </div>
</template>

JavaScript

<script>
import Vue from "vue";
import ElementUI from "element-ui";
import "element-ui/lib/theme-chalk/index.css";
import { read, utils } from "xlsx";
Vue.use(ElementUI);
export default {
  data() {
    return {
      fileList: [], //上传文件列表
      tableHead: [], //表头
      tableData: [] // 表数据
    };
  },
  methods: {
    onChange(e) {
      const file = e.target.files[0];
      const fileReader = new FileReader();
      fileReader.onload = ev => {
        try {
          const data = ev.target.result;
          const workbook = read(data, { type: "binary" });
          const params = [];
          // 取对应表生成json表格内容
          workbook.SheetNames.forEach(item => {
            params.push({
              name: item,
              dataList: utils.sheet_to_json(workbook.Sheets[item])
            });
            this.tableData.push(utils.sheet_to_json(workbook.Sheets[item]));
          });
          // 该算法仅针对表头无合并的情况
          if (this.tableData.length > 0) {
            // 获取excel中第一个表格数据tableData[0][0],并且将表头提取出来
            for (const key in this.tableData[0][0]) {
              this.tableHead.push(key);
            }
          }
          return params;
          // 重写数据
        } catch (e) {
          console.log("error:" + e);
          return false;
        }
      };
      fileReader.readAsBinaryString(file);
    },
    handleChange(res, file, fileList) {
      // 将文件放入
      for (let i = 0; i < fileList.length; i++) {
        if (file.name != fileList[i].name) {
          this.fileList.push({
            name: file.name,
            url: "",
            uid: file.uid
          });
        }
      }
      // this.fileList = fileList.slice(-3);
      const files = { 0: file };
      this.readExcel(files);
    },
    readExcel(file) {
      const fileReader = new FileReader();
      fileReader.onload = ev => {
        try {
          const data = ev.target.result;
          const workbook = read(data, { type: "binary" });
          const params = [];
          // 取对应表生成json表格内容
          workbook.SheetNames.forEach(item => {
            params.push({
              name: item,
              dataList: utils.sheet_to_json(workbook.Sheets[item])
            });
            this.tableData.push(utils.sheet_to_json(workbook.Sheets[item]));
          });
          // 该算法仅针对表头无合并的情况
          if (this.tableData.length > 0) {
            // 获取excel中第一个表格数据tableData[0][0],并且将表头提取出来
            for (const key in this.tableData[0][0]) {
              this.tableHead.push(key);
            }
          }
          return params;
          // 重写数据
        } catch (e) {
          console.log("error:" + e);
          return false;
        }
      };
      fileReader.readAsBinaryString(file[0].raw);
    }
  }
};
</script>

CSS

<style lang="scss" scoped>
.upload-demo {
  width: 100%;
}
.flex-display {
  margin: 50px 30px;
  width: 100%;
  display: flex;
  justify-content: flex-start;
  .left-box {
    margin: 20 30;
    height: 36px;
    line-height: 36px;
  }
}
.el-upload {
  margin-left: 40px;
  .el-btn {
    font-size: 16px;
  }
  .el-upload-tip {
    display: inline;
    font-size: 12px;
  }
}
.file-ipt {
  width: 200px;
  height: 36px;
  line-height: 36px;
  button {
    background-color: #409eff;
  }
}
input #file-upload-button {
  background-color: #409eff;
}
</style>

 

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