在 PDFkit 0.5 之前 - 以下内容对我有用(通过 pdfkit 生成 pdf/通过 ipp 打印到 CUPS):
var ipp = require("ipp");
var PDFDocument = require("pdfkit");
var doc = new PDFDocument;
doc.text("Hello World");
doc.output(function(pdf)){
var printer = ipp.Printer("http://127.0.0.1:631/printers/1");
var file = {
"operation-attributes-tag":{
"requesting-user-name": "User",
"job-name": "Print Job",
"document-format": "application/pdf"
},
data: new Buffer(pdf, "binary")
};
printer.execute("Print-Job", file, function (err, res) {
console.log("Printed: "+res.statusCode);
});
}
从 PDFkit 0.5 开始 -output
方法已弃用 - 但我似乎找不到使用新方法的示例pipe
方法与我的场景。如果我不使用浏览器,我还需要像这样的模块吗斑点流?
由于 pdfkit PDFDocument 现在是一个流,因此您必须缓冲来自缓冲区的数据:
var ipp = require("ipp");
var PDFDocument = require("pdfkit");
var doc = new PDFDocument;
doc.text("Hello World");
var buffers = [];
doc.on('data', buffers.push.bind(buffers));
doc.on('end', function () {
var printer = ipp.Printer("http://127.0.0.1:631/printers/1");
var file = {
"operation-attributes-tag":{
"requesting-user-name": "User",
"job-name": "Print Job",
"document-format": "application/pdf"
},
data: Buffer.concat(buffers)
};
printer.execute("Print-Job", file, function (err, res) {
console.log("Printed: "+res.statusCode);
});
});
doc.end();
或者你可以使用类似的东西串联流 module:
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("http://127.0.0.1:631/printers/1");
var file = {
"operation-attributes-tag":{
"requesting-user-name": "User",
"job-name": "Print Job",
"document-format": "application/pdf"
},
data: data
};
printer.execute("Print-Job", file, function (err, res) {
console.log("Printed: "+res.statusCode);
});
}));
doc.end();
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