另一个数据检索这里是我的JSON字符串的样子:JSON.Net - 从多态JSON字符串
{
"?xml" : {
"@version" : "1.0",
"@encoding" : "UTF-8"
},
"DataFeed" : {
"@FeedName" : "content",
"now" : "2016-10-17T14:11:38.00",
"Content" : [{
"ContentData" : {
"@statusType" : "Published",
"@isReleased" : "Yes",
"@docId" : "21756",
"ProductStatus" : {
"@productCategory" : "Issuer",
"@focus" : "Issuer",
"Symbol" : {
"@PrimarySymbol" : "GOOGL",
"@SecondarySymbol" : "Google",
"@BmId" : "1790"
}
},
"ContentVersion" : {
"@versionId" : "1",
"@lastVersion" : "true",
"@lastPublished" : "true",
"Url" : [{
"@type" : "XML",
"@size" : "146410",
"#cdata-section" : "https://aaa.yyy.com/docs/xml/708893eb-1fd9-4278-8b0e-e7e0738d8105.xml"
}, {
"@type" : "HTML",
"@size" : "46105",
"#cdata-section" : "https://aaa.yyy.com/docs/html/708893eb-1fd9-4278-8b0e-e7e0738d8105.html"
}, {
"@type" : "PDF",
"@size" : "1274885",
"#cdata-section" : "https://aaa.yyy.com/docs/pdf/708893eb-1fd9-4278-8b0e-e7e0738d8105.pdf"
}, {
"@type" : "ALTERNATE PDF",
"@size" : "60960",
"#cdata-section" : "https://aaa.yyy.com/docs/shortPdf/708893eb-1fd9-4278-8b0e-e7e0738d8105.pdf"
}
]
}
}
}, {
"ContentData" : {
"@statusType" : "Published",
"@isReleased" : "Yes",
"@docId" : "22457",
"ProductStatus" : {
"@productCategory" : "Issuer",
"@focus" : "Issuer",
"Symbol" : {
"@PrimarySymbol" : "AAPL",
"@SecondarySymbol" : "Apple",
"@BmId" : "1121"
}
},
"ContentVersion" : [{
"@versionId" : "1",
"@lastVersion" : "false",
"@lastPublished" : "false",
"Url" : [{
"@type" : "XML",
"#cdata-section" : "https://aaa.yyy.com/docs/version/708893eb-1fd9-4278-8b0e-e7e0738d8105.1476742297.xml"
}, {
"@type" : "HTML",
"#cdata-section" : "https://aaa.yyy.com/docs/version/708893eb-1fd9-4278-8b0e-e7e0738d8105.1476742297.html"
}, {
"@type" : "PDF",
"#cdata-section" : "https://aaa.yyy.com/docs/version/708893eb-1fd9-4278-8b0e-e7e0738d8105.1476742297.pdf"
}, {
"@type" : "ALTERNATE PDF",
"#cdata-section" : "https://aaa.yyy.com/docs/version/708893eb-1fd9-4278-8b0e-e7e0738d8105.1476742297_short.pdf"
}
]
}, {
"@versionId" : "2",
"@lastVersion" : "true",
"@lastPublished" : "true",
"Url" : [{
"@type" : "XML",
"@size" : "174520",
"#cdata-section" : "https://aaa.yyy.com/docs/xml/708893eb-1fd9-4278-8b0e-e7e0738d8105.xml"
}, {
"@type" : "HTML",
"@size" : "46105",
"#cdata-section" : "https://aaa.yyy.com/docs/html/708893eb-1fd9-4278-8b0e-e7e0738d8105.html"
}, {
"@type" : "PDF",
"@size" : "1270150",
"#cdata-section" : "https://aaa.yyy.com/docs/pdf/708893eb-1fd9-4278-8b0e-e7e0738d8105.pdf"
}, {
"@type" : "ALTERNATE PDF",
"@size" : "60960",
"#cdata-section" : "https://aaa.yyy.com/docs/version/708893eb-1fd9-4278-8b0e-e7e0738d8105.1577742297_short.pdf"
}
]
}
]
}
}, {
"ContentData" : {
"@statusType" : "Published",
"@isReleased" : "Yes",
"@docId" : "22501",
"ProductStatus" : {
"@productCategory" : "Issuer",
"@focus" : "Issuer",
"Symbol" : [{
"@PrimarySymbol" : "AAA",
"@SecondarySymbol" : "Some name 1",
"@BmId" : "561"
}, {
"@PrimarySymbol" : "ABC",
"@SecondarySymbol" : "Some Name 2",
"@BmId" : "29"
}, {
"@PrimarySymbol" : "BBB",
"@SecondarySymbol" : "Some Name 3",
"@BmId" : "36"
}, {
"@PrimarySymbol" : "CCC",
"@SecondarySymbol" : "Some Name 4",
"@BmId" : "624"
}
]
},
"ContentVersion" : {
"@versionId" : "1",
"@lastVersion" : "true",
"@lastPublished" : "true",
"Url" : [{
"@type" : "XML",
"@size" : "2706269",
"#cdata-section" : "https://aaa.yyy.com/docs/xml/1c420081-0ce5-4959-91d3-848bbbccd3e3.xml"
}, {
"@type" : "HTML",
"@size" : "32445",
"#cdata-section" : "https://aaa.yyy.com/docs/html/1c420081-0ce5-4959-91d3-848bbbccd3e3.html"
}, {
"@type" : "PDF",
"@size" : "887608",
"#cdata-section" : "https://aaa.yyy.com/docs/pdf/1c420081-0ce5-4959-91d3-848bbbccd3e3.pdf"
}, {
"@type" : "ALTERNATE PDF",
"@size" : "34366",
"#cdata-section" : "https://aaa.yyy.com/docs/shortPdf/1c420081-0ce5-4959-91d3-848bbbccd3e3.pdf"
}
]
}
}
}
]
}
}
我从下面的LINQ to Json data retrieval from polymorphic json代码示例。我想选择以下但前提是在Symbol
部分单个发行人及PDF网址为最新版本:
@docId
@PrimarySymbol
@BmId
#cdata-section
(但仅限于PDF文件的最新版本)
这是我的查询的样子:
from content in jsonFeed.SelectTokens("DataFeed.Content").SelectMany(i => i.ObjectsOrSelf())
let issuer = content
.SelectToken("[email protected]")
.SingleOrMultiple()
.Select(t => (string)t)
.ToArray()
where issuer.FirstOrDefault().Equals("Issuer")
select new
{
DocID = (string)content.SelectToken("[email protected]"),
Symbol = (string)content.SelectToken("[email protected]"),
BMId = (int)content.SelectToken("[email protected]"),
PDFUrl = (string)content.SelectToken("ContentData.ContentVersion.Url[3].#cdata-section")
}).ToList();
现在,我可以成功获取Google的所有字段,但我无法获得PDFUrl for Apple(因为我不知道如何获得最新版本)。另外,如何填写Where子句,以便只选择带有1个符号的文档?所以,到最后,我的名单将在下面的图片:
你想要“@type”:“PDF”URL还是“@type”:“ALTERNATE PDF”URL?因为您目前正在索引3处获得索引,这是另一个PDF网址。 – dbc
只是'“@type”:“PDF”。“ –