我想解析XLSX文件并将其转换为Angular 2中的JSON。我使用下面的代码来读取和解析文件readFile(){
var testUrl= "../assets/US175939.xlsx";
var oReq = new XMLHttpRequest();
oReq.open("GET", testUrl, true);
oReq.responseType = "arraybuffer";
oReq.onload = function(e) {
var arraybuffer = oReq.response;
/* convert data to binary string */
var data = new Uint8Array(arraybuffer);
var arr = new Array();
for(var i = 0; i != data.length; ++i) arr[i] = String.fromCharCode(data[i]);
var bstr = arr.join("");
console.log("Data"+bstr);
/* Call XLS */
var workbook = XLSX.read(bstr, {type:"binary"});
/* DO SOMETHING WITH workbook HERE */
}
oReq.send();
}
这里的错误是 - “找不到名称XLSX”。
请建议我使用角度2将Excel转换为JSON的一些解决方案。
我在Angular中编写了一个服务,将excel转换为JSON,反之亦然。步骤: - 1)npm install xlsx --save 2)npm install file-saver --save
import { Injectable } from '@angular/core';
import {saveAs} from 'file-saver';
import { WorkBook, read, utils, write, readFile } from 'xlsx';
@Injectable()
export class FileExcelService {
wbout = [];
table = [];
ws: any;
constructor() {
this.setExcelProperties('');
}
s2ab(s) {
const buf = new ArrayBuffer(s.length);
const view = new Uint8Array(buf);
for (let i = 0; i !== s.length; ++i) {
view[i] = s.charCodeAt(i) & 0xFF;
};
return buf;
}
SaveToExcel(tableData, fileName: string= 'QuestionSheet') {
this.setTableData(tableData,fileName);
saveAs(new Blob([this.s2ab(this.wbout)], { type: 'application/octet-stream' }), fileName+'.xlsx');
}
getTableData()
{
return this.table;
}
setTableData(tableData, fileName: string)
{
this.table = tableData;
this.setExcelProperties(fileName);
}
// excel Detail
setExcelProperties(fileName: string)
{
const ws_name = fileName.substr(0, 25); //'QuestionSheet'
// const ws_name = ''; // worksheet name cannot exceed 31 chracters length
const wb: WorkBook = { SheetNames: [], Sheets: {} };
this.ws = utils.json_to_sheet(this.getTableData());
wb.SheetNames.push(ws_name);
wb.Sheets[ws_name] = this.ws;
this.wbout = write(wb, { bookType: 'xlsx', bookSST: true, type: 'binary' });
}
convertExcelToJson(file)
{
let reader = new FileReader();
let workbookkk;
let XL_row_object;
let json_object;
reader.readAsBinaryString(file);
return new Promise((resolve, reject) => {
reader.onload = function(){
// alert(reader.result);
let data = reader.result;
workbookkk=read(data,{type: 'binary'});
console.log(workbookkk);
workbookkk.SheetNames.forEach(function(sheetName) {
// Here is your object
XL_row_object = utils.sheet_to_json(workbookkk.Sheets[sheetName]);
json_object = JSON.stringify(XL_row_object);
// console.log(json_object);
// console.log(XL_row_object);
resolve(XL_row_object);
});
};
});
}
}
我找到了解决方案。希望它能帮助所有人:
//读取文件readFile(){
var testUrl= "../assets/US175939.xlsx";
var oReq = new XMLHttpRequest();
oReq.open("GET", testUrl, true);
oReq.responseType = "arraybuffer";
oReq.onload = function(e) {
var arraybuffer = oReq.response;
/* convert data to binary string */
var data = new Uint8Array(arraybuffer);
var arr = new Array();
for(var i = 0; i != data.length; ++i){ arr[i] = String.fromCharCode(data[i]);
// console.log("Data"+data[i]);
}
var bstr = arr.join("");
var workbook = XLSX.read(bstr, {type:"binary"});
//console.log("Data"+bstr);
var first_sheet_name = workbook.SheetNames[0];
/* Get worksheet */
var worksheet = workbook.Sheets[first_sheet_name];
var json = XLSX.utils.sheet_to_json(workbook.Sheets[workbook.SheetNames[0]], {header:1, raw:true});
var jsonOut = JSON.stringify(json);
console.log("test"+jsonOut);
}
oReq.send();
}