基于Vue+element-ui的Table二次封装的实现

import comTable from '@/components/common/com-table'
import { GetTempletExportList, GetTempletExportInfo } from '../../../api/transfer/index'
import ApiConfig from '@/api/ApiConfig'
export default {
 name: 'templet',
 components: {
  comTable
 },
 data() {
  return {
   tableData4: [],
   exporttableData: [],
   multipleSelection: [],
   currentpoint: null,
   currentitem: null,
   itemdialogshow: false,
   pointdialogshow: false,
   path: new ApiConfig().GetConfig().SysPath,
   checkeditem: [],//选中数据
  }
 },
 computed: {
  moduletype() {
   return this.$store.state.moduletype;
  },
  userinfo() {
   return this.$store.state.user.userInfo;
  }
 },
 watch: {
  moduletype() {
   this.init();
  }
 },
 created() {
  this.init();
 },
 methods: {
  init() {
   GetTempletExportList(this.userinfo.cityid, this.moduletype).then(re => {
    this.exporttableData = re.data;
    this.tableData4 = [];
    re.data.map(item => {
     this.tableData4.push({
      name: item.fldTableDesc,
      point: {
       visible: false,
       value: ''
      },
      item: {
       visible: true,
       value: item.ItemList
      }
     })
    })
   }, (error) => {
    this.$message({
     customClass: 'el-message_new',
     message: error,
     type: 'error'
    });
   })
  },
  handleSelectionChange(val) {
   console.log(val)
   this.multipleSelection = val;
  },
  focuspoint(val) {
   this.currentpoint = val;
  },
  focusitem(val) {
   this.currentitem = val;
   this.itemdialogshow = true;
  },
  itemconfirm() {
   this.itemdialogshow = !this.itemdialogshow;
  },
  itemhandleClose(done) {
   this.itemdialogshow = false;
  },
  ItemGroupSelectchange(val) {
   this.checkeditem = val;
   console.log(this.checkeditem);
   let groupitemcontent = [];
   val.map(item => {
    groupitemcontent.push(item.fldItemName);
   })
   this.currentitem.value = groupitemcontent.join(',');
  },
  submit() {
   if (this.multipleSelection.length > 0) {
    let message = "";
    let data = [];
    let name = "";
    this.multipleSelection.map((item, index) => {
     name = item.name;
     let str = item.name;
     let info = false;
     if (item.item.visible && item.item.value == "") {
      message += `表[${str}]请选择因子`;
      info = true;
     }
     if (item.point.visible && item.point.value == "") {
      if (info) {
       message += `、请选择测点/断面！`;
      } else {
       message += `表[${str}]请选择测点/断面！`;
      }
      info = true;
     }
     if (info) {
      message += "
"
     }
     data.push({
      "AutoID": "1",
      "STCode": "",
      "PCode": "",
      "RCode": "",
      "RScode": "",
      "GDCODE": "",
      "type": this.moduletype,
      "itemcodeList": item.item.value.split(',').join('^'),
      "path": `${this.path.TempletExportSetting}${this.moduletype}.json`,
      "IsNeedNullData": "Y"
     })

    })
    if (message == "") {
     GetTempletExportInfo(data).then(re => {
      if (re.status == "ok") {
       var exportdata = eval((re.data));
       const { export_json_to_excel } = require("../../../libs/Export2Excel");
       if (exportdata[0].merg.length != 0) {
        var exdata = [];
        var itemlistUnit = [];
        var itemlistfldCharCode = [];
        for (var z = 0; z < exportdata[0].head.length - this.checkeditem.length; z++) {
         itemlistUnit.push(exportdata[0].head[z]);
         itemlistfldCharCode.push(exportdata[0].head[z])
        }
        this.checkeditem.map(item => {
         itemlistUnit.push(item.fldUnit);
         itemlistfldCharCode.push(item.fldCharCode);
        })
        var exdata = this.formatJson(exportdata[0].head, exportdata[0].data);
        exdata.unshift(itemlistUnit);
        exdata.unshift(itemlistfldCharCode);
        exdata.unshift(exportdata[0].head);
        console.log(exdata)
        exportdata[0].merg.push([0, 0, exportdata[0].head.length - 1, 0])
        export_json_to_excel([name], exdata, name, exportdata[0].merg);
       } else {
        var exdata = this.formatJson(exportdata[0].head, exportdata[0].data);
        exdata.unshift(exportdata[0].head);
        exportdata[0].merg.push([0, 0, exportdata[0].head.length - 1, 0])
        export_json_to_excel([name], exdata, name, exportdata[0].merg);
       }

      } else {
       this.$message({
        message: '导出失败！',
        type: 'error'
       });
      }
     })
    } else {
     this.$message({
      dangerouslyUseHTMLString: true,
      customClass: 'el-message_new',
      message: message,
      type: 'warning'
     });
    }
   } else {
    this.$message({
     customClass: 'el-message_new',
     message: '请先选择要导出的列表！',
     type: 'warning'
    });
   }
  },
  formatJson(filterVal, jsonData) {
   return jsonData.map(v =>
    filterVal.map(j => {
     return v[j];
    })
   );
  }
 }
}

class CommonWay {
 /**
  * description：对数组的分页处理
  * author:bilimumu
  * date:2017-10-28 
  * @param {number} [pageNo=1] 页码
  * @param {number} [pageSize=10] 每页显示条数 
  * @param {any} [obj=[]] 待分页的数组
  * @param {Boolean} [iscreateNewdata=true] 是否创建新的数据
  * @returns 返回新的数组
  * @memberof CommonWay
  */
 pagination(pageNo = 1, pageSize = 10, obj = [], iscreateNewdata = true) {
  var array = [];
  if (iscreateNewdata) {
   array = JSON.parse(JSON.stringify(obj));
  } else {
   array = obj;
  }
  var offset = (pageNo - 1) * pageSize;
  return (offset + pageSize >= array.length) ? array.slice(offset, array.length) : array.slice(offset, offset + pageSize);
 }
}

export default CommonWay

.com-table {
 height: 100%;
 width: 100%;
 &-title {
  color: #FFF;
  background: #42A2F5;
  padding: 0;
  font-size: 15px;
  height: 40px;
  line-height: 40px;
  text-indent: 8px;
 }
 &-content {
  width: 100%;
  height: calc(100% - 40px - 55px);
 }
 &-content-nottitle {
  width: 100%;
  height: calc(100% - 55px);
 }
 &-page {
  height: 55px;
  width: 100%;
  background: #EFF3F8;
  display: flex;
  align-items: center;
  justify-content: center;
 }
}