基于Vue2前端将网页数据转为Excel导出

摘要：首先，安装插件插件文档地址官方文档在组件这中引入所要导出的数据如下设置面板标题是否编辑表头数据项目名称规格单位数量单价金额卡数备注项目名称规格单位数量单价金额卡数备注表格数据柜体大师大师多撒好低柜体大师大师多撒好低柜体大师大师多撒好低柜体大

首先，安装xlsx插件

</>复制代码 
    npm install xlsx

插件文档地址xlsx官方文档

在组件这中引入

</>复制代码 
import XLSX from "xlsx";

所要导出的数据如下

</>复制代码 
// 设置面板标题
        settingPanelTitle:"",
        col:1,
        // 是否编辑
        isEdit:true,
        // 表头数据
        headerData: {
          "offerData":{
            name:"项目名称",
            spec:"规格",
            unit:"单位",
            count:"数量",
            unitPrice:"单价",
            total:"金额",
            cardNum:"卡数",
            comments:"备注"
          },
          "offerData1":{
            name:"项目名称1",
            spec:"规格1",
            unit:"单位1",
            count:"数量1",
            unitPrice:"单价1",
            total:"金额1",
            cardNum:"卡数1",
            comments:"备注1"
          }
        },
        // 表格数据
        allData:{
          "offerData":[
            {
              name:"柜体1",
              spec:"sasd",
              unit:"sadad",
              count:"5",
              unitPrice:"145",
              total:"",
              cardNum:5,
              comments:"大师大师多撒好低"
            },
            {
              name:"柜体2",
              spec:"sasd",
              unit:"sadad",
              count:"10",
              unitPrice:"522",
              total:"",
              cardNum:5,
              comments:"大师大师多撒好低"
            },
            {
              name:"柜体3",
              spec:"sasd",
              unit:"sadad",
              count:"15",
              unitPrice:"142",
              total:"",
              cardNum:5,
              comments:"大师大师多撒好低"
            },
            {
              name:"柜体4",
              spec:"sasd",
              unit:"sadad",
              count:"20",
              unitPrice:"22",
              total:"",
              cardNum:5,
              comments:"大师大师多撒好低"
            },
            {
              name:"柜体5",
              spec:"sasd",
              unit:"sadad",
              count:"25",
              unitPrice:"222",
              total:"",
              cardNum:5,
              comments:"大师大师多撒好低"
            },
            {
              name:"柜体6",
              spec:"sasd",
              unit:"sadad",
              count:"12",
              unitPrice:"322",
              total:"",
              cardNum:5,
              comments:"大师大师多撒好低"
            }
          ],
          "offerData1":[
            {
              name:"边框1",
              spec:"sasd",
              unit:"sadad",
              count:"12",
              unitPrice:"14522",
              total:"",
              cardNum:5,
              comments:"大师大师多撒好低"
            },
            {
              name:"边框2",
              spec:"sasd",
              unit:"sadad",
              count:"12",
              unitPrice:"14522",
              total:"",
              cardNum:5,
              comments:"大师大师多撒好低"
            },
            {
              name:"边框3",
              spec:"sasd",
              unit:"sadad",
              count:"12",
              unitPrice:"14522",
              total:"",
              cardNum:5,
              comments:"大师大师多撒好低"
            },
            {
              name:"边框4",
              spec:"sasd",
              unit:"sadad",
              count:"12",
              unitPrice:"14522",
              total:"",
              cardNum:5,
              comments:"大师大师多撒好低"
            },
            {
              name:"边框5",
              spec:"sasd",
              unit:"sadad",
              count:"12",
              unitPrice:"14522",
              total:"",
              cardNum:5,
              comments:"大师大师多撒好低"
            },
            {
              name:"边框6",
              spec:"sasd",
              unit:"sadad",
              count:"12",
              unitPrice:"14522",
              total:"",
              cardNum:5,
              comments:"大师大师多撒好低"
            }
          ]
        },
        //页头部分
        pageHead:{
          "offerData":[
            {
              name:"订单号：",
              isEdit:false
            },
            {
              name:"客户名称：",
              isEdit:false
            },
            {
              name:"销售日期：",
              isEdit:false
            },
            {
              name:"联系人：",
              isEdit:false
            },
            {
              name:"联系地址：",
              isEdit:false
            }
          ],
          "offerData1":[
            {
              name:"订单号1：",
              isEdit:false
            },
            {
              name:"客户名称1：",
              isEdit:false
            },
            {
              name:"销售日期1：",
              isEdit:false
            },
            {
              name:"联系人1：",
              isEdit:false
            },
            {
              name:"联系地址1：",
              isEdit:false
            }
          ]
        },
        // 页头部分内容
        pageHeadContent:{
          "offerData":[
            {
              name:"1231312313"
            },
            {
              name:"zoe"
            },
            {
              name:"2017-10-21"
            },
            {
              name:"joe"
            },
            {
              name:"beijibng"
            }
          ],
          "offerData1":[
            {
              name:"2231312313"
            },
            {
              name:"zoe1"
            },
            {
              name:"2017-10-21"
            },
            {
              name:"joe11"
            },
            {
              name:"beijibng111"
            }
          ]
        },
        options: {
          "offerData":{
            value: "offerData",
            label: "报价明细单"
          }, 
          "offerData1":{
            value: "offerData1",
            label: "报价明细单1"
          }
        },
        value: "offerData", //选择的表格
        outputData:[], // 导出的数据
        outFile: "",  // 导出文件el

在ui层放个导出按钮和a标记模仿导出弹框

</>复制代码 
导出

点击导出按钮触发

</>复制代码 
// 导出功能
      downloadFile: function (rs) { // 点击导出按钮
        //拼接导出的数据
        //1.拼接标题
        rs.push({title:this.settingPanelTitle});
        //2.拼接表头内容
        let headContent={};
        //页头项
        let pHead=this.pageHead[this.value];
        //页头项对应的内容
        let pHeadContent=this.pageHeadContent[this.value];
        for(let i in pHead){   
          headContent[i]=pHead[i].name+""+pHeadContent[i].name;
        }
        // console.log(headContent);
        rs.push(headContent);
        //3.拼接表头标题
        
        rs.push(this.headerData[this.value]);
        //4.拼接表内容
        rs.push(...this.allData[this.value]);
        //5.拼接表尾
        rs.push({title:"合计",value:this.settingData[this.value].totalPrice});
        // console.log(rs);
        this.downloadExl(rs, this.settingPanelTitle)
      },
      downloadExl: function (json, downName, type) {  // 导出到excel
        let tmpdata = [] // 用来保存转换好的json
        let maxLen=0; //最长的一行
        json.map((v, i) => {
          if(maxLen {  //取出键对应的值
            return Object.assign({}, { //拼接输出的sheet
              v: v[k],
              position: (j > 25 ? this.getCharCol(j) : String.fromCharCode(65 + j)) + (i + 1)
            })}
          )
        }).reduce((prev, next) =>  prev.concat(next)).forEach(function (v) {
          tmpdata[v.position] = { //转换输出json
            v: v.v
          }
        })
        let outputPos = Object.keys(tmpdata)  // 设置区域,比如表格从A1到D10
        // console.log(outputPos);
        
        // 转化最长的行所对应的区域码
        maxLen=this.getCharCol(maxLen);
        // console.log(maxLen+outputPos[outputPos.length-1].slice(1));
        let tmpWB = {
          SheetNames: ["mySheet"], // 保存的表标题
          Sheets: {
            "mySheet": Object.assign({},
              tmpdata, // 内容
              {
                "!ref": outputPos[0] + ":" + (maxLen+outputPos[outputPos.length-1].slice(1)) // 设置填充区域
              })
          }
        }
        let tmpDown = new Blob([this.s2ab(XLSX.write(tmpWB,
          {bookType: (type === undefined ? "xlsx" : type), bookSST: false, type: "binary"} // 这里的数据是用来定义导出的格式类型
        ))], {
          type: ""
        })  // 创建二进制对象写入转换好的字节流
        var href = URL.createObjectURL(tmpDown)  // 创建对象超链接
        this.outFile.download = downName + ".xlsx"  // 下载名称
        this.outFile.href = href  // 绑定a标签
        this.outFile.click()  // 模拟点击实现下载
        setTimeout(function () {  // 延时释放
          URL.revokeObjectURL(tmpDown) // 用URL.revokeObjectURL()来释放这个object URL
        }, 100)
      },
      // 转2进制
      s2ab(s){
        if(typeof ArrayBuffer !== "undefined"){
          let buf =new ArrayBuffer(s.length);
          let view =new Uint8Array(buf);
          for(var i=0;i!=s.length;++i) view[i] =s.charCodeAt(i) & 0xFF;  
          return buf;      
        }else{
          let buf= new Array(s.length);
          for(var i=0;i!=s.length;++i) buf[i] =s.charCodeAt(i) & 0xFF;
          return buf;
        } 
      },
      // 将指定的自然数转换为26进制表示。映射关系：[0-25] -> [A-Z]。
      getCharCol(n) { 
        let s = ""
        let m = 0
        while (n > 0) {
          m = n % 26 + 1
          s = String.fromCharCode(m + 64) + s
          n = (n - m) / 26
        }
        return s
      },

实现效果