参考文章
http://librajt.github.io/2013/08/04/handle-excel-file-with-nodejs/
对比了 ExcelJS , https://github.com/guyonroche/exceljs#create-a-workbook
node-xlsx，https://github.com/mgcrea/node-xlsx
等 nodejs 等现有组件，决定使用node-xlsx。
node-xlsx 基于现有前端强大组件 js-xlsx， https://github.com/SheetJS/js-xlsx
简单使用例子：
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var express = require('express');
var router = express.Router();
var xlsx = require('node-xlsx');
var fs = require('fs');
/* GET import excel test. */
router.get('/importExcel', function(req, res, next) {
var filename='./public/test.xlsx';
console.error(filename);
// read from a file
var obj = xlsx.parse(filename);
console.log(JSON.stringify(obj));
res.send('import successfully!');
});
/* GET export excel test. */
router.get('/exportExcel', function(req, res, next) {
// write
var data = [[1,2,3],[true, false, null, 'sheetjs'],['foo','bar',new Date('2014-02-19T14:30Z'), '0.3'], ['baz', null, 'qux']];
var buffer = xlsx.build([{name: "mySheetName", data: data}]);
fs.writeFileSync('b.xlsx', buffer, 'binary');
res.send('export successfully!');
});
补充：
文件上传操作可以选择以下两种
fs https://github.com/jprichardson/node-fs-extra
formidable https://github.com/felixge/node-formidable
上传参考代码1： http://www.tuicool.com/articles/F7JrMjj
https://cnodejs.org/topic/4f40a4dc0feaaa4424081758
上传文件 (记得创建上传文件的目录，例如public/upload )
routes/test.js
var formidable = require('formidable');
var http = require('http');
var util = require('util');
var express = require('express');
var fs = require('fs');
var path = require('path');
var favicon = require('serve-favicon');
var bodyParser = require('body-parser');
var app = express();
var server = http.createServer(app);
server.listen(3000);
app.set('views', '/views');
//app.use(favicon('/public/favicon.ico'));
app.use(bodyParser());
app.use('/public',express.static(path.join(__dirname, 'public')));
app.get('/',function(req, res) {
res.writeHead(200, {'content-type': 'text/html'});
res.end(
'<form action="/upload" enctype="multipart/form-data" method="post">'+
'<input type="text" name="title"><br>'+
'<input type="file" name="upload" multiple="multiple"><br>'+
'<input type="submit" value="Upload">'+
'</form>'
);
});
app.post('/upload', function(req,res) {
console.log(" ########## POST /upload ####### ");
var fileTypeError = false;
var target_path = __dirname+"/upload";
var form = new formidable.IncomingForm();
form.encoding = 'utf-8';
form.keepExtensions = true;
form.maxFieldsSize = 10 * 1024 * 1024;
form.uploadDir = target_path;
var fields = [];
var files = [];
form.on('field', function (field, value) {
fields.push([field, value]);
});
form.on('file', function (field, file) {
console.log('upload file: ' + file.name);
//判断文件类型是否是xlsx
if (file.type != 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet') {
fileTypeError = true;
}
files.push([field, file]);
});
form.on('end', function () {
//遍历上传文件
var fileName = '';
var obj = '';
var folder_exists = fs.existsSync(target_path);
if (folder_exists) {
var dirList = fs.readdirSync(target_path);
dirList.forEach(function (item) {
if (!fs.statSync(target_path + '/' + item).isDirectory()) {
console.log('parse item:' + target_path + '/' + item);
fileName = target_path + '/' + item;
if (!fileTypeError) {
//解析excel
obj = xlsx.parse(fileName);
console.log(JSON.stringify(obj));
//insert into DB
//todo
res.send({"rtnCode": "0", "rtnInfo": "成功导入数据"});
} else {
res.send({"rtnCode": "1", "rtnInfo": "文件格式不正确"});
}
//delete file
fs.unlinkSync(fileName);
}
});
}else{
res.send({"rtnCode": "1", "rtnInfo": "系统错误"});
}
});
form.on('error', function(err) {
res.send({"rtnCode": "1", "rtnInfo": "上传出错"});
});
form.on('aborted', function() {
res.send({"rtnCode": "1", "rtnInfo": "放弃上传"});
});
form.parse(req);
});
其他参考：//返回上传进度
form.on('progress', function(bytesReceived, bytesExpected) {
var progress = {
type: 'progress',
bytesReceived: bytesReceived,
bytesExpected: bytesExpected
};
socket.broadcast(JSON.stringify(progress));
});
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