Wie man Knoten js auf die Ausführung der Funktion warten lässt (selbst wenn es Zeit braucht) und dann die nächste Anweisung ausführt

Wie man Knoten js auf die Ausführung der Funktion warten lässt (auch wenn es Zeit braucht) und dann die nächste ausführen Erklärung . für mich Problem ist für Schleife druckt alle URLs zuerst es wartet nicht auf Require Request-Funktion, um jede URL die HTTP-Antwort zu überprüfen. Es druckt nur alle URLs. beacuse diese i der Störung erhaltenWie man Knoten js auf die Ausführung der Funktion warten lässt (selbst wenn es Zeit braucht) und dann die nächste Anweisung ausführt

console.log(dd[i]['loc'][0]); 
       ^

Typeerror: kann Eigenschaft 'loc' undefinierter

meiner vollständigen Quellcode ist als unten

 var hapi = require('hapi'); 
    var glue = require('glue'); 
    var joi = require('joi'); 
    var handlebars = require('handlebars'); 
    var strop = require('string'); 
    var inert = require('inert'); 
    var async = require('async'); 
    var poop = require('poop'); 
    var bell = require('bell'); 
    var nconf = require('nconf'); 

    //xml parser starts 

    var fs = require('fs'), 
     xml2js = require('xml2js'); 

    var parser = new xml2js.Parser(); 
    fs.readFile('sitemapscene1.xml', function(err, data) { 
    var count = 0; 
    var a=0; 
    var b=0; 
    var c=0; 
    var d=0; 
    var e=0; 
    var f=0; 
    var g=0; 
    var h=0; 
    //parsing inside url starts 
    var parseString = require('xml2js').parseString; 

     parser.parseString(data, function (err, result) { 
      ff = result; 
      dd = ff['urlset']['url']; 

      for (i =0; i< dd.length; i++){ 
      console.log(dd[i]['loc'][0]); 
    //server reuest and checking 
    var request = require('request'); 
    request(dd[i]['loc'][0], function (error, response, body) { 
     if (!error && response.statusCode == 200) { 
     console.log(dd[i]['loc'][0]); 
     console.log("This url http response is 200"); 
     count=count+1; 
     console.log(count); 
     } 
    }) 



    } 
    console.log("Total number of urls in this sitemap"); 
      console.log(dd.length); 
      }); 

     }); 


    //xml parser ends 

My full error code is 

    Total number of urls in this sitemap 
22569 

    console.log(dd[i]['loc'][0]); 
        ^

TypeError: Cannot read property 'loc' of undefined 
    at Request._callback 
    at Request.self.callback 
    at emitTwo (events.js:87:13) 
    at Request.emit (events.js:172:7) 
    at Request.<anonymous> 
    at emitOne (events.js:77:13) 
    at Request.emit (events.js:169:7) 
    at IncomingMessage.<anonymous> 
    at emitNone (events.js:72:20) 
    at IncomingMessage.emit (events.js:166:7)

Mein tatsächlicher vollständiger Code

lesen

var hapi = require('hapi'); 
var glue = require('glue'); 
var joi = require('joi'); 
var handlebars = require('handlebars'); 
var strop = require('string'); 
var inert = require('inert'); 
var async = require('async'); 
var poop = require('poop'); 
var bell = require('bell'); 
var nconf = require('nconf'); 
var async = require('async'); 

//xml parser starts 

var fs = require('fs'), 
    xml2js = require('xml2js'); 

var parser = new xml2js.Parser(); 
fs.readFile('sitemapscene1.xml', function(err, data) { 
var count = 0; 
var a=0; 
var b=0; 
var c=0; 
var d=0; 
var e=0; 
var f=0; 
var g=0; 
var h=0; 
//parsing inside url starts 
var parseString = require('xml2js').parseString; 

    parser.parseString(data, function (err, result) { 
     ff = result; 
     dd = ff['urlset']['url']; 
     console.log("Total number of urls in this sitemap"); 
     console.log(dd.length); 
     for (i =0; i< dd.length; i++){ 
     console.log(dd[i]['loc'][0]); 

//sending to server to get response 
var request = require("request"); 

request(dd[i]['loc'][0], function(error, response, body) { 
    //console.log(response.statuscode); 
if (!error && response.statusCode == 200) { 

    count=count+1; 

    console.log("Number of pages with responese.statuscode 200 is"); 
    console.log(count); 

    var ddddd = "Number of pages with responese.statuscode 200 is " + count + " " + dd[i]['loc'][0] 
// output is wriiten in output.txt file start here 

fs = require('fs'); 
fs.writeFile('output.txt', ddddd, function (err) { 
    if (err) return console.log(err); 
    console.log('Hello World > output.txt'); 
}); 

// output is wriiten in output.txt file ends here 

    } else if (error && response.statusCode == 400) { 

     a=a+1; 
    console.log("Number of pages with responese.statuscode 400 is"); 
    console.log(a); 
    var ddddd = "Number of pages with responese.statuscode 200 is " + count + " " + dd[i]['loc'][0] 
// output is wriiten in output.txt file start here 

fs = require('fs'); 
fs.writeFile('output.txt', ddddd, function (err) { 
    if (err) return console.log(err); 
    console.log('Hello World > output.txt'); 
}); 

// output is wriiten in output.txt file ends here 

    }else if (error && response.statusCode == 402) { 

     b=b+1; 
    console.log("Number of pages with responese.statuscode 402 is"); 
    console.log(b); 
    var ddddd = "Number of pages with responese.statuscode 200 is " + count + " " + dd[i]['loc'][0] 
// output is wriiten in output.txt file start here 

fs = require('fs'); 
fs.writeFile('output.txt', ddddd, function (err) { 
    if (err) return console.log(err); 
    console.log('Hello World > output.txt'); 
}); 

// output is wriiten in output.txt file ends here 

    }else if (error && response.statusCode == 403) { 

     c=c+1; 
    console.log("Number of pages with responese.statuscode 403 is"); 
    console.log(c); 
    var ddddd = "Number of pages with responese.statuscode 200 is " + count + " " + dd[i]['loc'][0] 
// output is wriiten in output.txt file start here 

fs = require('fs'); 
fs.writeFile('output.txt', ddddd, function (err) { 
    if (err) return console.log(err); 
    console.log('Hello World > output.txt'); 
}); 

// output is wriiten in output.txt file ends here 

    }else if (error && response.statusCode == 404) { 

     d=d+1; 
    console.log("Number of pages with responese.statuscode 404 is"); 
    console.log(d); 

    }else if (error && response.statusCode == 500) { 

     e=e+1; 
    console.log("Number of pages with responese.statuscode 500 is"); 
    console.log(e); 
    var ddddd = "Number of pages with responese.statuscode 200 is " + count + " " + dd[i]['loc'][0] 
// output is wriiten in output.txt file start here 

fs = require('fs'); 
fs.writeFile('output.txt', ddddd, function (err) { 
    if (err) return console.log(err); 
    console.log('Hello World > output.txt'); 
}); 

// output is wriiten in output.txt file ends here 

    }else if (error && response.statusCode == 502) { 

     f=f+1; 
    console.log("Number of pages with responese.statuscode 502 is"); 
    console.log(f); 
    var ddddd = "Number of pages with responese.statuscode 200 is " + count + " " + dd[i]['loc'][0] 
// output is wriiten in output.txt file start here 

fs = require('fs'); 
fs.writeFile('output.txt', ddddd, function (err) { 
    if (err) return console.log(err); 
    console.log('Hello World > output.txt'); 
}); 

// output is wriiten in output.txt file ends here 

    }else if (error && response.statusCode == 504) { 

     g=g+1; 
    console.log("Number of pages with responese.statuscode 504 is"); 
    console.log(g); 
    var ddddd = "Number of pages with responese.statuscode 200 is " + count + " " + dd[i]['loc'][0] 
// output is wriiten in output.txt file start here 

fs = require('fs'); 
fs.writeFile('output.txt', ddddd, function (err) { 
    if (err) return console.log(err); 
    console.log('Hello World > output.txt'); 
}); 

// output is wriiten in output.txt file ends here 

    } else { 

     h=h+1; 
    console.log("Number of pages with error is"); 
    console.log(h); 
    var ddddd = "Number of pages with responese.statuscode 200 is " + count + " " + dd[i]['loc'][0] 
// output is wriiten in output.txt file start here 

fs = require('fs'); 
fs.writeFile('output.txt', ddddd, function (err) { 
    if (err) return console.log(err); 
    console.log('Hello World > output.txt'); 
}); 

// output is wriiten in output.txt file ends here 

    } 



}); 

     } 
     //console.log("Number of urls,in this site map"); 
     //console.log(dd.length); //number of urls 
    }); 
}); 

//xml parser ends

Thi s ist der Code, der Absturz der Server, ich glaube, ich Fehler im Code als Server laufen aus dem Speicher

var hapi = require('hapi'); 
var glue = require('glue'); 
var joi = require('joi'); 
var handlebars = require('handlebars'); 
var strop = require('string'); 
var inert = require('inert'); 
var async = require('async'); 
var poop = require('poop'); 
var bell = require('bell'); 
var nconf = require('nconf'); 
var async = require('async'); 

//xml parser starts 

var fs = require('fs'), 
    xml2js = require('xml2js'); 

var parser = new xml2js.Parser(); 
fs.readFile('sitemapscene1.xml', function(err, data) { 
var count = 0; 
var a=0; 
var b=0; 
var c=0; 
var d=0; 
var e=0; 
var f=0; 
var g=0; 
var h=0; 
//parsing inside url starts 
var parseString = require('xml2js').parseString; 

    parser.parseString(data, function (err, result) { 
     ff = result; 
     dd = ff['urlset']['url']; 

     for (i =0; i< dd.length; i++){ 
     console.log(dd[i]['loc'][0]); 
//server reuest and checking 
var asyncRequests = []; 
var request = require('request'); 

dd.forEach(function(ddElement){ 
    asyncRequests.push(function(callback){ 
     request(ddElement.loc[0], function(error, response, body) { 
      if (!error && response.statusCode == 200) { 
       return callback(null, 1); 
      } 

     callback(); 
     }); 
    }); 
}); 

async.parallel(asyncRequests, function afterStatement(err, results){ 
    var count = 0; 

    for (var i = 0; i < results.length; i ++){ 
       if (results[i]){ 
      count += results[i]; 
     } 
    } 
}); 



} 
console.log("Total number of urls in this sitemap"); 
     console.log(dd.length); 
     }); 

    }); 


//xml parser ends

Quelle

2016-07-21 sudan kanakavel

Sie sitemapscene1.xml Datei zur Verfügung stellen kann, wie Gut ? –

NodeJS ist nicht blockierend ... glaube nicht, dass es eine gute Idee ist, es zu "blockieren". http://StackOverflow.com/a/14797359/4838205 –

meine .xml-Datei besteht aus 26k URLs, so kann ich hier nicht setzen –

Sie benötigen async, machte also warum nicht Sie es verwenden?

var asyncRequests = []; 
var request = require('request'); 

dd.forEach(function(ddElement){ 
    asyncRequests.push(function(callback){ 
     request(ddElement.loc[0], function(error, response, body) { 
      if (!error && response.statusCode == 200) { 
       return callback(null, 1); 
      } 

     callback(); 
     }); 
    }); 
}); 

async.parallel(asyncRequests, function afterStatement(err, results){ 
    var count = 0; 

    for (var i = 0; i < results.length; i ++){ 
     // I don't remember if something is send with callback(), so check data 
     if (results[i]){ 
      count += results[i]; 
     } 
    } 
});

Und bitte, das nächste Mal, lesbar und gegliederten Code senden.

EDIT: Wenn Sie ein Objekt mit den Ergebnissen im Zusammenhang auf die Route bekommen zählen wollen (Ich halte ddElement.loc [0] die Route):

var asyncRequests = []; 
var request = require('request'); 

dd.forEach(function(ddElement){ 
    asyncRequests.push(function(callback){ 
     request(ddElement.loc[0], function(error, response, body) { 
      callback(error, { 
       statusCode : response.statusCode, 
       route : ddElement.loc[0] 
      }); 
     }); 
    }); 
}); 

async.parallel(asyncRequests, function afterStatement(err, results){ 
    if (err){ 
     console.error(err); 
    } 

    console.log(results); 
});

Quelle

2016-07-21 13:36:32

Eigentlich versuche ich eine XML-Sitemap-Datei analysieren. Nehmen Sie URL in Ruhe und überprüfen Sie http-Antwort und drucken Sie, welche URL welche HTTP-Antwort erhält. und zählen zählen auch insgesamt URLs in Sitemap und Anzahl der URLs mit 200 Antwort, 400 Antwort, 404 Antwort, 500 Antwort ... –

Vielen Dank für Ihren Code, aber immer noch bekomme ich Fehler –

Ich füge einen Weg, um ein Objekt mit Routen und Ergebnisse. Sie können damit Statistiken erstellen. Und was ist dein Fehler? –

Wie man Knoten js auf die Ausführung der Funktion warten lässt (selbst wenn es Zeit braucht) und dann die nächste Anweisung ausführt

Antwort

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