如何解决使用Power BI进行数据抓取并在查询编辑器中串联字符串
我试图用Power BI抓取数据。我已经下载了数据,下一步是构建自己的功能。为了执行此操作,我使用高级编辑器编写了这段代码
(items as number,page as number) as table =>
let
Source = Web.BrowserContents("https://www.neptun.mk/pocetna/categories/TV_AUDIO_VIDEO/televizori.nspx?items=" & Number.ToText(items),"@page=" & Number.ToText(page)),#"Extracted Table From Html" = Html.Table(Source,{{"Column1",".product-list-item__content\-\-title"},{"Column2",".HappyCard"},{"Column3",".newPriceModel"},{"Column4","[width=""192""]",each [Attributes][src]?}},[RowSelector=".product-list-item-grid"]),#"Changed Type" = Table.TransformColumnTypes(#"Extracted Table From Html",type text},type text}}),#"Added Custom" = Table.AddColumn(#"Changed Type","Custom",each "https://www.neptun.mk"),#"Merged Columns" = Table.CombineColumns(#"Added Custom",{"Custom","Column4"},Combiner.CombineTextByDelimiter("",QuoteStyle.None),"Merged"),#"Split Column by Delimiter" = Table.SplitColumn(#"Merged Columns","Column2",Splitter.SplitTextByDelimiter(" ",QuoteStyle.Csv),{"Column2.1","Column2.2","Column2.3","Column2.4"}),#"Changed Type1" = Table.TransformColumnTypes(#"Split Column by Delimiter",{{"Column2.1",{"Column2.2",{"Column2.3",Int64.Type},{"Column2.4",#"Split Column by Delimiter1" = Table.SplitColumn(#"Changed Type1","Column3",{"Column3.1","Column3.2","Column3.3","Column3.4"}),#"Changed Type2" = Table.TransformColumnTypes(#"Split Column by Delimiter1",{{"Column3.1",{"Column3.2",{"Column3.3",{"Column3.4",#"Removed Other Columns" = Table.SelectColumns(#"Changed Type2",{"Column1","Merged"}),#"Renamed Columns" = Table.RenameColumns(#"Removed Other Columns","ImageURL"},"RegularPrice"},"DiscountedPrice"},{"Merged","Title"}})
in
#"Renamed Columns"
这段代码中最重要的部分是第三行:
Source = Web.BrowserContents("https://www.neptun.mk/pocetna/categories/TV_AUDIO_VIDEO/televizori.nspx?items=" & Number.ToText(items),
这部分代码需要更改网页抓取页面。但是当我尝试更改参数项目或页面时(例如,page = 1且items = 1),我收到此消息:
所以我的错误可能在某处
Source = Web.BrowserContents("https://www.neptun.mk/pocetna/categories/TV_AUDIO_VIDEO/televizori.nspx?items=" & Number.ToText(items),
我不确定语法是否正确并且可以串联,所以有人可以帮助我解决这个问题吗?
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