我正在开发一个应该采用文件名数组的命令行应用程序, 转换操作(文本文件,电子表格等有效负载必须重写为JSON对象),并将结果发送到端点API(api.example.com)。 我正在考虑顺序读取,并将管道结果发送到-http或-request的实例, 但不知道从哪里开始。您是否有任何替代方案或策略用于解决类似的问题?
任何算法,或指向SO上的文章或类似问题都将受到高度赞赏。 感谢。
UPDATE1。我找到了一个可能有助于此Google论坛https://groups.google.com/forum/#!topic/nodejs/_42VJGc9xJ4
的链接跟踪最终解决方案:
var request = require('request');
var file = fs.createReadStream(path)
.pipe(request.put({url: url, headers:{'Content-Length': fileSize}}, function(err, res, body){
if(err) {
console.log('error', err);
} else {
console.log('status', res.statusCode);
if(res.statusCode === 200) {
console.log('success');
}
}
}));
剩下的问题是如何为" n"文件,如果" n"高 - 100个文本文件或更多。
答案 0 :(得分:0)
在尝试和错误之后,我用事件解决了这个问题,并且我粘贴答案以防万一其他人正在努力解决类似的问题。
var EventEmitter = require('events').EventEmitter;
var request = require('request');
var util = require('util');
function Tester(){
EventEmitter.call(this);
this.files = ['http://google.ca', 'http://google.com', 'http://google.us'];
}
util.inherits( Tester, EventEmitter );
Tester.prototype.run = function(){
//referencing this to be used with the kids down-here
var self = this;
if( !this.files.length ) { console.log("Cannot run again .... "); return false; }
request({ url : this.files.shift()}, function( err, res, body ) {
console.log( err, res.statusCode, body.length, " --- Running the test --- remaining files ", self.files );
if( !self.files.length ) self.emit( "stop" );
else self.emit( "next" , self.files );
});
};
//creating a new instance of the tester class
var tester = new Tester();
tester.on("next", function(data){
//@todo --- wait a couple of ms not to overload the server.
//re-run each time I got this event
tester.run();
});
tester.on("stop", function(data){
console.log("Got stop command --- Good bye!");
});
//initialize the first run
tester.run();
//graceful shutdown -- supporting windows as well
//@link http://stackoverflow.com/questions/10021373/what-is-the-windows-equivalent-of-process-onsigint-in-node-js
if (process.platform === "win32") {
require("readline").createInterface({
input: process.stdin,
output: process.stdout
}).on("SIGINT", function () {
process.emit("SIGINT");
});
}
process.on("SIGINT", function () {
// graceful shutdown
process.exit();
});
console.log('Started the application ... ');
NB:
我用get进行快速测试,但post / put也可以。 我希望它有所帮助,随时发表评论。感谢。