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xml宽度模式作为node.js中的json

[英]xml width schema as json in node.js

 原文  2017-08-07 14:41:39  2   1    javascript/ json/ node.js/ xml

问题描述

i try loop or access keys of a json object which was generated out of a xml object in node.js. 我尝试从node.js中的xml对象生成的json对象的循环或访问键。

So far my code: 到目前为止，我的代码： 

var fs = require('fs');
var parser = require('xml2json');
var xsd = require('libxml-xsd');

exports.readXml = function () {
    fs.readFile( './beispiel_daten/xml_data.xml', 'utf8', function(err, xml) {
        if (xml) {
                xsd.parseFile("./beispiel_daten/xml_schema.xsd", function(err, schema){
                    schema.validate(xml, function(err, validationErrors){

                        if (!err) {
                            var json = parser.toJson(xml);
                            console.log(json['caaml:Bulletin']);
                        }

                    });
                });
            }
    });

}

The xml file: https://lawine.tirol.gv.at/rest/bulletin/2017-05-01_073000/xml/de xml文件： https ： //lawine.tirol.gv.at/rest/bulletin/2017-05-01_073000/xml/de

The schema: http://caaml.org/Schemas/V5.0/Profiles/BulletinEAWS/CAAMLv5_BulletinEAWS.xsd 架构： http : //caaml.org/Schemas/V5.0/Profiles/BulletinEAWS/CAAMLv5_BulletinEAWS.xsd

The gnereated json object look like that: jsoned对象看起来像这样： 

{  
   "caaml:Bulletin":{  
      "xmlns:caaml":"http://caaml.org/Schemas/V5.0/Profiles/BulletinEAWS",
      "xmlns:gml":"http://www.opengis.net/gml",
      "xmlns:xlink":"http://www.w3.org/1999/xlink",
      "xmlns:xsi":"http://www.w3.org/2001/XMLSchema-instance",
      "xsi:schemaLocation":"http://caaml.org/Schemas/V5.0/Profiles/BulletinEAWS http://caaml.org/Schemas/V5.0/Profiles/BulletinEAWS/CAAMLv5_BulletinEAWS.xsd",
      "gml:id":"BulletinDeID3018",
      "xml:lang":"de",
      "caaml:metaDataProperty":{  ...

When i now try to access the first key with console.log(json['caaml:Bulletin']); 当我现在尝试使用console.log(json['caaml:Bulletin']);访问第一个键时console.log(json['caaml:Bulletin']); i receive a undefined. 我收到一个未定义的。

How can i access the data or how can i loop through the object? 如何访问数据或如何遍历对象？

Thanks! 谢谢！

1 个解决方案

解决方案1
 1 已采纳  2017-08-07 14:56:28

const transform = require('camaro')
// const omitEmpty = require('omit-empty')

const xml = require('fs').readFileSync('so2.xml', 'utf-8')

const template = {
    data: ['//caaml:DangerRating', {
        locRef: 'caaml:locRef/@xlink:href',
        validTime: {
            beginPosition: '//caaml:TimePeriod/caaml:beginPosition',
            endPosition: '//caaml:TimePeriod/caaml:endPosition'
        },
        validElevation: {
            uom: '//caaml:ElevationRange/@uom',
            endPosition: '//caaml:endPosition'
        },
        mainValue: '//caaml:mainValue'
    }]
}

const result = transform(xml, template)
console.log(JSON.stringify(result.data, null, 2))

You can add more attributes if you want. 您可以根据需要添加更多属性。 The syntax is Xpath 1.0. 语法是Xpath 1.0。

Output of the script 脚本输出 

[
  {
    "locRef": "",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R1",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R1",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R1",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R1",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R2",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R2",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R2",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R2",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R3",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R3",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R3",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R3",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R4",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R4",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R4",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R4",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R5",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R5",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R5",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R5",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R6",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R6",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R6",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R6",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R7",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R7",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R7",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R7",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R8",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R8",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R8",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R8",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R9",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R9",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R9",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R9",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R10",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R10",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R10",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R10",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R11",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R11",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R11",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R11",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R12",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R12",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R12",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  },
  {
    "locRef": "AT7R12",
    "mainValue": "3",
    "validElevation": {
      "endPosition": "2017-05-01T11:59:59+02:00",
      "uom": "m"
    },
    "validTime": {
      "beginPosition": "2017-05-01T00:00:00+02:00",
      "endPosition": "2017-05-01T11:59:59+02:00"
    }
  }
]

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