私はこれをやりました。現在進行中の作業ですが、同じ問題を経験している可能性のある人に何らかの助けを与えるか、少なくとも何らかの方向性を与えるかもしれません。私はこの交換の部分を私に助けるためにこのtoolを使用しました。それが役に立てば幸い。
const cmd = require('node-cmd'),
fs = require('fs');
print: (entity) => {
pool.open(cn, (err, conn) => {
let quantityToPrint = entity.quantityToPrint; //Get Quantity from inputbox
let getNeededData =() => {
return new Promise((resolve, reject) => {
sql = `select * from Table where Blah = 'BlahBlah'`
conn.query(sql, (err, data) => {
var obj = {};
obj.ReplacementValue1 = (data.length > 0 && typeof data[0].ReplacementValue1 !== 'undefined') ? data[0].ReplacementValue1 : '';
obj.ReplacementValue2 = (data.length > 0 && typeof data[0].ReplacementValue2 !== 'undefined') ? data[0].ReplacementValue2 : '';
obj.ReplacementValue3 = (data.length > 0 && typeof data[0].ReplacementValue3 !== 'undefined') ? data[0].ReplacementValue3 : '';
resolve(obj);
})
})
}
let getPrintLabel = (obj) => {
return new Promise((resolve, reject) => {
let printer = entity.printer, //Printer I call from a drop down
labelFile = 'labels/lablefile.lbl',
inputLine;
var filename = 'tempLabel_' + new Date().getTime() + '.lbl';
var gvOutFile = 'labels/temp/templabel_' + new Date().getTime() + '.lbl';
fs.createReadStream(labelFile).pipe(fs.createWriteStream(gvOutFile, { options: { flags: 'r+', mode: 666, encoding: 'utf8' } }));
setTimeout(function() {
var data = fs.readFileSync(gvOutFile, 'utf8');
var newValue = data.replace(/(\[ValueToReplace1\])/gim, month + '/' + day + '/' + years)
.replace(/(\[ValueToReplace1\])/gim, obj.ReplacementValue1)
.replace(/(\[ValueToReplace2\])/gim, obj.ReplacementValue2)
.replace(/(\[ValueToReplace3\])/gim, obj.ReplacementValue3)
//NOTE, You may need to change how you are replacing. I replace brackets in my lbl file.
fs.writeFileSync(gvOutFile, newValue, { options: { flags: 'r+', mode: 666, encoding: 'utf8' } });
cmd.run('lp -s -c -d ' + printer + ' ' + gvOutFile);
}, (2 * 1000))// 2 Seconds
resolve();
})
}
for (var item = 0, x = quantityToPrint; item < x; item++) {
getNeededData().then(getPrintLabel).then((data) => {
pool.close(function() { });
entity.res.json(data);
})
}
})
}