我正在尝试使用 IPP （Internet Printing Protocol）在第二个纸盒上打印文档。我正在使用这个 npm IPP-Library。
但是每次我尝试打印文档时，我的打印机都会显示一个消息，要求我添加纸张到第一个纸盒，并且控制台输出说“已打印：成功-ok”。
但是每次我尝试打印文档时，我的打印机都会显示一个消息，要求我添加纸张到第一个纸盒，并且控制台输出说“已打印：成功-ok”。
var ipp = require("ipp");
var PDFDocument = require("pdfkit");
var concat = require("concat-stream");
var doc = new PDFDocument;
doc.text("Hello World");
doc.pipe(concat(function (data) {
var printer = ipp.Printer("MY_URL");
var file = {
"operation-attributes-tag": {
"requesting-user-name": "admin",
'attributes-charset': 'utf-8',
'attributes-natural-language': 'de'
},
"printer-attributes": {
"media-col": {
"media-source": "tray-2"
},
},
data: data
};
printer.execute("Print-Job", file, function (err, res) {
console.log("Printed: " + res.statusCode);
});
}));
doc.end();
我尝试的另一个变体如下（来自这里）：
var PDFDocument = require("pdfkit");
let fs = require('fs')
var ipp = require('ipp');
var uri = "http://10.1.205.71";
var msg = new Buffer(
'0200'+ //Version
'000201e6d5f2'+
'01'+ //Operation attributes tag (your information in the Operation attributes might be different)
'47'+ //charset tag
'0012'+ //length
'617474726962757465732d63686172736574'+ //attributes-charset
'0005'+ //length
'7574662d38'+ //utf-8
'48'+ //natural language tag
'001b'+ //length
'617474726962757465732d6e61747572616c2d6c616e6775616765'+//attributes-natural-language
'0002'+//length
'656e'+ //en
'45'+ // URI tag
'000b'+ //length
'7072696e7465722d757269'+ //printer-uri
'0012'+//length
'687474703a2f2f31302e312e3230352e3731'+//http://10.1.205.71
'49'+ //mimeMediaType tag
'000f'+ //length
'646f63756d656e742d666f726d6174'+ //document format
'000f'+ //length
'6170706c69636174696f6e2f706466'+ //application/pdf
'02'+ //job attributes tag
'34'+ //begin collection
'0009'+ //length
'6d656469612d636f6c'+ //media-col
'0000'+ //value length
'4a'+ //collection entry
'0000'+ //name length
'000c'+ //value length
'6d656469612d736f75726365'+ //media-source
'44'+ // collection entry
'0000'+ //name length
'0006'+ //value length
'747261792d32'+ //tray-2
'37'+ //end of collection
'00000000'+ //name length and value length
'03', 'hex');
var doc = new PDFDocument;
doc.text("Hello World");
var buffers = [];
doc.on('data', buffers.push.bind(buffers));
doc.on('end', function(){
var buf = Buffer.concat(buffers);
var catBuf = Buffer.concat([msg, buf]);
ipp.request(uri, catBuf, function(err, res){
if(err){
return console.log(err);
}
console.log(JSON.stringify(res,null,2));
});
});
doc.end();
但是我收到了这个错误信息：
{
Error
at new IppResponseError (/Users/alex/dev/print/printing/node_modules/ipp/lib/request.js:72:17)
at ClientRequest.<anonymous> (/Users/alex/dev/print/printing/node_modules/ipp/lib/request.js:40:8)
at Object.onceWrapper (events.js:293:19)
at emitOne (events.js:96:13)
at ClientRequest.emit (events.js:191:7)
at HTTPParser.parserOnIncomingClient [as onIncoming] (_http_client.js:522:21)
at HTTPParser.parserOnHeadersComplete (_http_common.js:99:23)
at Socket.socketOnData (_http_client.js:411:20)
at emitOne (events.js:96:13)
at Socket.emit (events.js:191:7)
name: 'IppResponseError',
statusCode: 400,
message: 'Received unexpected response status 400 from the printer',
stack: 'Error\n at new IppResponseError (/Users/alex/dev/print/printing/node_modules/ipp/lib/request.js:72:17)\n at ClientRequest.<anonymous> (/Users/alex/dev/print/printing/node_modules/ipp/lib/request.js:40:8)\n at Object.onceWrapper (events.js:293:19)\n at emitOne (events.js:96:13)\n at ClientRequest.emit (events.js:191:7)\n at HTTPParser.parserOnIncomingClient [as onIncoming] (_http_client.js:522:21)\n at HTTPParser.parserOnHeadersComplete (_http_common.js:99:23)\n at Socket.socketOnData (_http_client.js:411:20)\n at emitOne (events.js:96:13)\n at Socket.emit (events.js:191:7)' }
400 'response'
我的打印机不支持IPP，但我在我的Macbook上共享了它，并为所有共享的打印机提供了IPP服务。 如果我使用第一张纸盒并且有纸张，一切都很好，但对于我的项目，还需要在其他纸盒上打印。
从Get-Printer-Attributes返回的属性列表中列出了其他托盘中支持的第二张纸作为media-source，但仅第一个纸盒有效。
是否有人有想法如何在另一个纸盒上成功打印？
更新：我也尝试了另一台打印机，但是遇到了同样的错误。
更新22.06.17：仍然感到困惑，不知道如何解决这个问题。