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使用npm安装watson-developer-cloud时出错

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我'm following the ' Watson Quickstart for Node.js'找到here，但是我在使用他们提供的npm命令安装Watson Developer Cloud Node.js包装程序包时遇到了问题 .

这是输出：cmd output after npm command

之后，运行命令的目录中不会出现任何文件 . 有没有人对如何安装Watson Developer Cloud包装器以通过Bluemix开始使用Node.js开发Watson应用程序有任何建议？

node.js ibm-cloud ibm-watson

3 回答

  • 0

    彼得，

    您所指的页面版本已在三个多月前完全重写 . 重写应解决您遇到的问题 . 它似乎在同一个网址上提供：

    http://www.ibm.com/smarterplanet/us/en/ibmwatson/developercloud/doc/getting_started/gs-quick-nodejs.shtml

    我不确定你为什么会看到那个旧版本的那个页面 . 也许它是你缓存中的陈旧版本？请尝试刷新页面，看看是否有帮助 .

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  • 1

    好的，因此文档页面存在许多问题 . 我将它们与解决方案一起列在下面 . 在解决了以下缺点之后，我能够让这个例子正常工作 .

    • Machine Translation service does not exist - 在新的方案中，机器翻译服务现在是 Language translation 服务 .

    • Service credentials are for an incorrect version of the API - 您获取的服务凭据对象是针对API的v2版本而不是示例源代码中提到的v1 .

    • The source code in the example uses completely outdated request parameters - 请参阅下面更新的源代码 .

    var watson = require（'watson-developer-cloud'）;

    var machine_translation = watson.language_translation({
  username: 'user_name',
  password: 'password',
  version: 'v2'
});

//the attributes from and to in the example provided are actually replaced by source and target
machine_translation.translate({
  text: 'A sentence must have a verb', source : 'enus', target: 'eses' },
  function (err, response) {
    if (err)
      console.log('error:', err);
    else
      console.log(JSON.stringify(response, null, 2));
});

    希望这能解决您的问题 . 当然，示例中显示的代码只是一个入门代码 - 如果您想开发一个复杂的应用程序，那么您需要引入其他依赖项，如expressjs，jade等，然后显式实现它们 .

    如果您想参考此服务的Github存储库示例，请访问this link .

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  • 3

    彼得，

    npm命令应该在该目录中创建一个包含Watson包装器API的nodes_module . 您仍然需要编写一个主Node.js文件来调用API . 下面的示例是使用Language Translation Watson服务的Node.js文件：

    var express = require('express');
var app = express();

app.get('/', function (req, res) {
  res.send('Hello World!');
});

var watson = require('watson-developer-cloud');

var language_translation = watson.language_translation({
  username: '<username>',
  password: '<password>',
  version: 'v2'
});

language_translation.translate({
  text: 'A sentence must have a verb', source : 'en', target: 'es' },
  function (err, translation) {
    if (err)
      console.log('error:', err);
    else
      console.log(JSON.stringify(translation, null, 2));
});

language_translation.identify({
  text: 'The language translation service takes text input and identifies the language used.' },
  function (err, language) {
    if (err)
      console.log('error:', err);
    else
      console.log(JSON.stringify(language, null, 2));
});


var server = app.listen(3000, function () {
  var host = server.address().address;
  var port = server.address().port;

  console.log('Example app listening at http://%s:%s', host, port);
});

    它需要express，所以你必须首先安装express并运行Node.js应用程序（假设您将上面的文件保存为app.js，您还需要输入Watson服务用户名和密码，如您所关注的文章中所述） ：

    npm install express
node app.js

    输出类似于：

    Example app listening at http://:::3000
{
  "translations": [
    {
      "translation": "Una sentencia debe tener un verbo"
    }
  ],
  "word_count": 6,
  "character_count": 27
}
{
  "languages": [
    {
      "language": "en",
      "confidence": 0.913647
    },
    {
      "language": "id",
      "confidence": 0.0323458
    },
    {
      "language": "sv",
      "confidence": 0.0156442
    },
    {
      "language": "fi",
      "confidence": 0.011028
    },
    {
      "language": "is",
      "confidence": 0.00709899
    },
    {
      "language": "nn",
      "confidence": 0.00553699
    },
    {
      "language": "ht",
      "confidence": 0.00408621
    },
    {
      "language": "et",
      "confidence": 0.00119016
    },
    {
      "language": "lv",
      "confidence": 0.00115617
    },
    {
      "language": "de",
      "confidence": 0.00114441
    },
    {
      "language": "tr",
      "confidence": 0.00111117
    },
    {
      "language": "ro",
      "confidence": 0.000802137
    },
    {
      "language": "lt",
      "confidence": 0.000801177
    },
    {
      "language": "cs",
      "confidence": 0.000613459
    },
    {
      "language": "sq",
      "confidence": 0.000474419
    },
    {
      "language": "ku",
      "confidence": 0.000468358
    },
    {
      "language": "bs",
      "confidence": 0.000452145
    },
    {
      "language": "sk",
      "confidence": 0.000396557
    },
    {
      "language": "nb",
      "confidence": 0.000324082
    },
    {
      "language": "hu",
      "confidence": 0.000292984
    },
    {
      "language": "fr",
      "confidence": 0.000289142
    },
    {
      "language": "da",
      "confidence": 0.000274609
    },
    {
      "language": "eo",
      "confidence": 0.000194707
    },
    {
      "language": "eu",
      "confidence": 0.000167031
    },
    {
      "language": "vi",
      "confidence": 0.000147763
    },
    {
      "language": "az",
      "confidence": 0.000121994
    },
    {
      "language": "af",
      "confidence": 0.000111069
    },
    {
      "language": "nl",
      "confidence": 0.0000278278
    },
    {
      "language": "pl",
      "confidence": 0.0000243381
    },
    {
      "language": "pt",
      "confidence": 0.0000127483
    },
    {
      "language": "es",
      "confidence": 0.0000112067
    },
    {
      "language": "ja",
      "confidence": 0.0000018683
    },
    {
      "language": "it",
      "confidence": 5.87651e-7
    },
    {
      "language": "ko",
      "confidence": 4.27166e-7
    },
    {
      "language": "zh",
      "confidence": 1.33964e-7
    },
    {
      "language": "zh-TW",
      "confidence": 6.36584e-8
    },
    {
      "language": "el",
      "confidence": 3.10395e-8
    },
    {
      "language": "hi",
      "confidence": 1.61209e-8
    },
    {
      "language": "ur",
      "confidence": 3.72468e-9
    },
    {
      "language": "mn",
      "confidence": 3.26788e-9
    },
    {
      "language": "ru",
      "confidence": 2.58127e-9
    },
    {
      "language": "he",
      "confidence": 1.91823e-9
    },
    {
      "language": "km",
      "confidence": 1.60638e-9
    },
    {
      "language": "ar",
      "confidence": 1.18306e-9
    },
    {
      "language": "pa",
      "confidence": 1.16591e-9
    },
    {
      "language": "bn",
      "confidence": 9.64752e-10
    },
    {
      "language": "so",
      "confidence": 9.41827e-10
    },
    {
      "language": "ka",
      "confidence": 7.88174e-10
    },
    {
      "language": "uk",
      "confidence": 5.64222e-10
    },
    {
      "language": "ps",
      "confidence": 3.55452e-10
    },
    {
      "language": "ky",
      "confidence": 3.32569e-10
    },
    {
      "language": "fa",
      "confidence": 2.74777e-10
    },
    {
      "language": "ta",
      "confidence": 2.7293e-10
    },
    {
      "language": "be",
      "confidence": 2.71734e-10
    },
    {
      "language": "bg",
      "confidence": 2.33392e-10
    },
    {
      "language": "te",
      "confidence": 2.0307e-10
    },
    {
      "language": "ml",
      "confidence": 1.92155e-10
    },
    {
      "language": "kk",
      "confidence": 1.67796e-10
    },
    {
      "language": "hy",
      "confidence": 1.42515e-10
    },
    {
      "language": "gu",
      "confidence": 1.21276e-10
    },
    {
      "language": "ba",
      "confidence": 6.74764e-11
    },
    {
      "language": "cv",
      "confidence": 4.22054e-11
    }
  ]
}
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