vue和elementui把数据导出excel

页面上的table中的数据导出

          只能按页导出  一次只能导出某一页的数据   

npm install --save xlsx file-saver

<bee-table :data="interfaceList" class="table">

  import FileSaver from "file-saver"
  import XLSX from "xlsx"

  export default {
    components: {
      BeeBreadcrumb,
      BeeTable,
      FileSaver,
      XLSX
    }

<el-button type="success" @click="handleExcel">导出为CSV</el-button>


  handleExcel()
      {
        this.startTtime=this.value2[0];
        this.endTime=this.value2[1];
        if(!this.startTtime || !this.endTime) {
           this.$message({
              showClose: true,
              message: '查询日期不能为空!',
              type: 'warning'
           });
           return;
        }
         this.getinferfaceCall("excel");
         let time = new Date();
         let year = time.getFullYear();
         let month = time.getMonth() + 1;
         let day = time.getDate();
         let name = year + "" + month + "" + day;
      // console.log(name)
      /* generate workbook object from table */
      //  .table要导出的是哪一个表格
        var wb = XLSX.utils.table_to_book(document.querySelector(".table"));
      /* get binary string as output */
        var wbout = XLSX.write(wb, {
         bookType: "xlsx",
         bookSST: true,
         type: "array"
       });
        try {
        //  name+'.xlsx'表示导出的excel表格名字
        FileSaver.saveAs(
          new Blob([wbout], { type: "application/octet-stream" }),
          name + ".xlsx"
        );
      } catch (e) {
        if (typeof console !== "undefined") console.log(e, wbout);
      }
      return wbout;
      }

 

 

 

把后台返回的数据集合导出

        可以一次性把所有的数据进行导出  可能包含无数页的数据

npm install -D xlsx ,file-saver
npm install -s script-loader

  2.添加工具脚本文件

 

 

/* eslint-disable */
/* Blob.js
 * A Blob implementation.
 * 2014-05-27
 *
 * By Eli Grey, http://eligrey.com
 * By Devin Samarin, https://github.com/eboyjr
 * License: X11/MIT
 *   See LICENSE.md
 */

/*global self, unescape */
/*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true,
 plusplus: true */

/*! @source http://purl.eligrey.com/github/Blob.js/blob/master/Blob.js */

(function (view) {
    "use strict";

    view.URL = view.URL || view.webkitURL;

    if (view.Blob && view.URL) {
        try {
            new Blob;
            return;
        } catch (e) {}
    }

    // Internally we use a BlobBuilder implementation to base Blob off of
    // in order to support older browsers that only have BlobBuilder
    var BlobBuilder = view.BlobBuilder || view.WebKitBlobBuilder || view.MozBlobBuilder || (function(view) {
            var
                get_class = function(object) {
                    return Object.prototype.toString.call(object).match(/^\[object\s(.*)\]$/)[1];
                }
                , FakeBlobBuilder = function BlobBuilder() {
                    this.data = [];
                }
                , FakeBlob = function Blob(data, type, encoding) {
                    this.data = data;
                    this.size = data.length;
                    this.type = type;
                    this.encoding = encoding;
                }
                , FBB_proto = FakeBlobBuilder.prototype
                , FB_proto = FakeBlob.prototype
                , FileReaderSync = view.FileReaderSync
                , FileException = function(type) {
                    this.code = this[this.name = type];
                }
                , file_ex_codes = (
                    "NOT_FOUND_ERR SECURITY_ERR ABORT_ERR NOT_READABLE_ERR ENCODING_ERR "
                    + "NO_MODIFICATION_ALLOWED_ERR INVALID_STATE_ERR SYNTAX_ERR"
                ).split(" ")
                , file_ex_code = file_ex_codes.length
                , real_URL = view.URL || view.webkitURL || view
                , real_create_object_URL = real_URL.createObjectURL
                , real_revoke_object_URL = real_URL.revokeObjectURL
                , URL = real_URL
                , btoa = view.btoa
                , atob = view.atob

                , ArrayBuffer = view.ArrayBuffer
                , Uint8Array = view.Uint8Array
                ;
            FakeBlob.fake = FB_proto.fake = true;
            while (file_ex_code--) {
                FileException.prototype[file_ex_codes[file_ex_code]] = file_ex_code + 1;
            }
            if (!real_URL.createObjectURL) {
                URL = view.URL = {};
            }
            URL.createObjectURL = function(blob) {
                var
                    type = blob.type
                    , data_URI_header
                    ;
                if (type === null) {
                    type = "application/octet-stream";
                }
                if (blob instanceof FakeBlob) {
                    data_URI_header = "data:" + type;
                    if (blob.encoding === "base64") {
                        return data_URI_header + ";base64," + blob.data;
                    } else if (blob.encoding === "URI") {
                        return data_URI_header + "," + decodeURIComponent(blob.data);
                    } if (btoa) {
                        return data_URI_header + ";base64," + btoa(blob.data);
                    } else {
                        return data_URI_header + "," + encodeURIComponent(blob.data);
                    }
                } else if (real_create_object_URL) {
                    return real_create_object_URL.call(real_URL, blob);
                }
            };
            URL.revokeObjectURL = function(object_URL) {
                if (object_URL.substring(0, 5) !== "data:" && real_revoke_object_URL) {
                    real_revoke_object_URL.call(real_URL, object_URL);
                }
            };
            FBB_proto.append = function(data/*, endings*/) {
                var bb = this.data;
                // decode data to a binary string
                if (Uint8Array && (data instanceof ArrayBuffer || data instanceof Uint8Array)) {
                    var
                        str = ""
                        , buf = new Uint8Array(data)
                        , i = 0
                        , buf_len = buf.length
                        ;
                    for (; i < buf_len; i++) {
                        str += String.fromCharCode(buf[i]);
                    }
                    bb.push(str);
                } else if (get_class(data) === "Blob" || get_class(data) === "File") {
                    if (FileReaderSync) {
                        var fr = new FileReaderSync;
                        bb.push(fr.readAsBinaryString(data));
                    } else {
                        // async FileReader won't work as BlobBuilder is sync
                        throw new FileException("NOT_READABLE_ERR");
                    }
                } else if (data instanceof FakeBlob) {
                    if (data.encoding === "base64" && atob) {
                        bb.push(atob(data.data));
                    } else if (data.encoding === "URI") {
                        bb.push(decodeURIComponent(data.data));
                    } else if (data.encoding === "raw") {
                        bb.push(data.data);
                    }
                } else {
                    if (typeof data !== "string") {
                        data += ""; // convert unsupported types to strings
                    }
                    // decode UTF-16 to binary string
                    bb.push(unescape(encodeURIComponent(data)));
                }
            };
            FBB_proto.getBlob = function(type) {
                if (!arguments.length) {
                    type = null;
                }
                return new FakeBlob(this.data.join(""), type, "raw");
            };
            FBB_proto.toString = function() {
                return "[object BlobBuilder]";
            };
            FB_proto.slice = function(start, end, type) {
                var args = arguments.length;
                if (args < 3) {
                    type = null;
                }
                return new FakeBlob(
                    this.data.slice(start, args > 1 ? end : this.data.length)
                    , type
                    , this.encoding
                );
            };
            FB_proto.toString = function() {
                return "[object Blob]";
            };
            FB_proto.close = function() {
                this.size = this.data.length = 0;
            };
            return FakeBlobBuilder;
        }(view));

    view.Blob = function Blob(blobParts, options) {
        var type = options ? (options.type || "") : "";
        var builder = new BlobBuilder();
        if (blobParts) {
            for (var i = 0, len = blobParts.length; i < len; i++) {
                builder.append(blobParts[i]);
            }
        }
        return builder.getBlob(type);
    };
}(typeof self !== "undefined" && self || typeof window !== "undefined" && window || this.content || this));

/* eslint-disable */
require('script-loader!file-saver');
require('script-loader!vendor/Blob');
require('script-loader!xlsx/dist/xlsx.core.min');
function generateArray(table) {
    var out = [];
    var rows = table.querySelectorAll('tr');
    var ranges = [];
    for (var R = 0; R < rows.length; ++R) {
        var outRow = [];
        var row = rows[R];
        var columns = row.querySelectorAll('td');
        for (var C = 0; C < columns.length; ++C) {
            var cell = columns[C];
            var colspan = cell.getAttribute('colspan');
            var rowspan = cell.getAttribute('rowspan');
            var cellValue = cell.innerText;
            if (cellValue !== "" && cellValue == +cellValue) cellValue = +cellValue;

            //Skip ranges
            ranges.forEach(function (range) {
                if (R >= range.s.r && R <= range.e.r && outRow.length >= range.s.c && outRow.length <= range.e.c) {
                    for (var i = 0; i <= range.e.c - range.s.c; ++i) outRow.push(null);
                }
            });

            //Handle Row Span
            if (rowspan || colspan) {
                rowspan = rowspan || 1;
                colspan = colspan || 1;
                ranges.push({s: {r: R, c: outRow.length}, e: {r: R + rowspan - 1, c: outRow.length + colspan - 1}});
            }
            ;

            //Handle Value
            outRow.push(cellValue !== "" ? cellValue : null);

            //Handle Colspan
            if (colspan) for (var k = 0; k < colspan - 1; ++k) outRow.push(null);
        }
        out.push(outRow);
    }
    return [out, ranges];
};

function datenum(v, date1904) {
    if (date1904) v += 1462;
    var epoch = Date.parse(v);
    return (epoch - new Date(Date.UTC(1899, 11, 30))) / (24 * 60 * 60 * 1000);
}

function sheet_from_array_of_arrays(data, opts) {
    var ws = {};
    var range = {s: {c: 10000000, r: 10000000}, e: {c: 0, r: 0}};
    for (var R = 0; R != data.length; ++R) {
        for (var C = 0; C != data[R].length; ++C) {
            if (range.s.r > R) range.s.r = R;
            if (range.s.c > C) range.s.c = C;
            if (range.e.r < R) range.e.r = R;
            if (range.e.c < C) range.e.c = C;
            var cell = {v: data[R][C]};
            if (cell.v == null) continue;
            var cell_ref = XLSX.utils.encode_cell({c: C, r: R});

            if (typeof cell.v === 'number') cell.t = 'n';
            else if (typeof cell.v === 'boolean') cell.t = 'b';
            else if (cell.v instanceof Date) {
                cell.t = 'n';
                cell.z = XLSX.SSF._table[14];
                cell.v = datenum(cell.v);
            }
            else cell.t = 's';

            ws[cell_ref] = cell;
        }
    }
    if (range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range);
    return ws;
}

function Workbook() {
    if (!(this instanceof Workbook)) return new Workbook();
    this.SheetNames = [];
    this.Sheets = {};
}

function s2ab(s) {
    var buf = new ArrayBuffer(s.length);
    var view = new Uint8Array(buf);
    for (var i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;
    return buf;
}

export function export_table_to_excel(id) {
    var theTable = document.getElementById(id);
    console.log('a')
    var oo = generateArray(theTable);
    var ranges = oo[1];

    /* original data */
    var data = oo[0];
    var ws_name = "SheetJS";
    console.log(data);

    var wb = new Workbook(), ws = sheet_from_array_of_arrays(data);

    /* add ranges to worksheet */
    // ws['!cols'] = ['apple', 'banan'];
    ws['!merges'] = ranges;

    /* add worksheet to workbook */
    wb.SheetNames.push(ws_name);
    wb.Sheets[ws_name] = ws;

    var wbout = XLSX.write(wb, {bookType: 'xlsx', bookSST: false, type: 'binary'});

    saveAs(new Blob([s2ab(wbout)], {type: "application/octet-stream"}), "test.xlsx")
}

function formatJson(jsonData) {
    console.log(jsonData)
}
export function export_json_to_excel(th, jsonData, defaultTitle) {

    /* original data */

    var data = jsonData;
    data.unshift(th);
    var ws_name = "SheetJS";

    var wb = new Workbook(), ws = sheet_from_array_of_arrays(data);


    /* add worksheet to workbook */
    wb.SheetNames.push(ws_name);
    wb.Sheets[ws_name] = ws;

    var wbout = XLSX.write(wb, {bookType: 'xlsx', bookSST: false, type: 'binary'});
    var title = defaultTitle || '列表'
    saveAs(new Blob([s2ab(wbout)], {type: "application/octet-stream"}), title + ".xlsx")
}

  3.表格页面代码

      handleExcel()
      {
        this.startTtime=this.value2[0];
        this.endTime=this.value2[1];
        if(!this.startTtime || !this.endTime) {
           this.$message({
              showClose: true,
              message: '查询日期不能为空!',
              type: 'warning'
           });
           return;
        }
         this.getinferfaceCall("excel").then(()=>{
          require.ensure([], () => {
          const { export_json_to_excel } = require("../../vendor/Export2Excel");
          const tHeader = ['应用名称', '接口地址', '平均耗时','最大耗时','最小耗时','总次数','错误数'];
          // 上面设置Excel的表格第一行的标题
          const filterVal = ['appname', 'interface', 'avgtime','maxtime','mintime','requestCount','errRequest'];
          // 上面的index、nickName、name是tableData里对象的属性
          const list = this.excelList;  //把data里的tableData存到list
          const data = this.formatJson(filterVal, list);
           export_json_to_excel(tHeader, data, '接口调用详情');
          })
        });
      },
      formatJson(filterVal, jsonData) {
        return jsonData.map(v => filterVal.map(j => v[j]))
      },

     getinferfaceCall(qtype)
     {
      if(qtype == undefined){qtype==""}
      this.tbflag=true;
      return this.$http.getInterfaceCall(
          {
            "pageIndex":this.currentPage,
            "pageSize":this.pageSize,
            "startTime":this.startTtime,
            "endTime":this.endTime,
            "sortColumn":this.sortColumn,
            "sortType":this.sortType,
            "querytype":qtype
           },{notify:true})
         .then((data) => 
          {
            if(qtype == undefined)
            {
               this.interfaceList=data.list;
            }
            else
            {
               this.excelList=data.list;
            }
            this.total=data.total;
          }).finally(() =>{
            this.tbflag=false;
          });
     }

  4.后台

    #接口调用详情
    def getinterfacecall(self,startTime,endTime,pageIndex,pageSize,sortColumn,sortType,querytype):
        userChoiceTime_start = self.formartStartTime(startTime)
        userChoiceTime_end = self.formartEndTime(endTime)
        index_list_pattern=self.getindexes(startTime,endTime)
        pageIndex = int(pageIndex)
        pageSize = int(pageSize)
        if sortColumn=="":
            sortColumn="avgtime"


        body = {
            "size": 0,
            "query": {
                "filtered": {
                    "filter": {
                        "bool": {
                            "must": [
                                {
                                    "range": {
                                        "@timestamp": {
                                            "gte": tools.strtime_to_timestamp(userChoiceTime_start),
                                            "lte": tools.strtime_to_timestamp(userChoiceTime_end)
                                        }
                                    }
                                }
                            ]
                        }
                    }
                }
            },
            "aggs": {
              "appname": {
                 "terms": {
                     "field": "appname"
                 },
                 "aggs":  {
                   "res": {
                      "terms": {
                        "field": "interface"
                    },
                    "aggs": {
                        "avg_waste_time": {
                            "avg": {
                                "field": "waste_time"
                            }
                        },
                        "max_waste_time": {
                            "max": {
                                "field": "waste_time"
                            }
                        },
                        "min_waste_time": {
                            "min": {
                                "field": "waste_time"
                            }
                        },
                        "visit": {
                            "terms": {
                                "field": "success.keyword"
                            }
                        }
                    }
                 }
               }
              }
            }
        }

        res = self.es.search(index=index_list_pattern,body=body)

        ilist=[]
        for app in res["aggregations"]["appname"]["buckets"]:
            appname = app["key"]
            appobj=AppName.objects.filter(appname=appname).first()
            businessname="暂无"
            if appobj and appobj.env:
                businessname=appobj.env.businessname
            for interface in app["res"]["buckets"]:
                wastetime = self.format_floatnumber(interface["avg_waste_time"]["value"])
                maxtime=self.format_floatnumber(interface["max_waste_time"]["value"])
                mintime=self.format_floatnumber(interface["min_waste_time"]["value"])
                requests = interface["doc_count"]
                err_express = [i["doc_count"] for i in interface["visit"]["buckets"] if i["key"] == "false"]
                errcount = err_express[0] if len(err_express) > 0 else 0
                ilist.append({"businessname":businessname,"appname":appname,"interface": interface["key"], "avgtime": wastetime, "requestCount": requests, "errRequest": errcount,"maxtime":maxtime,"mintime":mintime})

        reverse=False
        floatflag=False
        if sortType == "desc":
            reverse=True
        if sortColumn in ["avgtime","requestCount","errRequest","maxtime","mintime"]:
            floatflag=True
        if floatflag:
            ilist = sorted(ilist,key=lambda e:float(e.__getitem__(sortColumn)),reverse=reverse)
        else:
            ilist = sorted(ilist, key=lambda e:e.__getitem__(sortColumn), reverse=reverse)

        if querytype != "excel":
            reslist=ilist[(pageIndex-1)*pageSize:pageIndex*pageSize]
            data = {'code': 'SUCCESS', 'message': '', 'data': {"total":len(ilist),"list":reslist}}
            return data
        else:
            data = {'code': 'SUCCESS', 'message': '', 'data': {"total": len(ilist), "list": ilist}}
            return data

 

 

异常处理 

 

  1.定位异常代码

  

 

  2.修改代码