Excel 电源查询给出 DataSource.Error web.content 未能从 api url 获取内容 (404)：未找到

Question

我的 excel 使用来自 api url 的数据，我运行每 10 分钟查询一次，但是如果 api 有很多流量和 returns 一个 404 错误，我收到一个弹出错误“DataSource.Error web.content 无法从 api url (404) 获取内容；未找到”并且整个传播 sheet 在我单击好之前无法正常工作，我需要做的是让查询继续尝试 api url 直到它获得数据 return 而不是抛出错误。这是我运行:

的查询

let
    Source = Json.Document(Web.Contents("api url")),
    #"Converted to Table" = Record.ToTable(Source),
    #"Removed Top Rows" = Table.Skip(#"Converted to Table",9),
    #"Removed Bottom Rows" = Table.RemoveLastN(#"Removed Top Rows",6)
in
    #"Removed Bottom Rows"

我尝试添加 MaunalStatusHandling，但它并没有解决问题，因为我不断收到错误消息。我希望有人能告诉我解决这个问题的方法

提前感谢您的帮助

Answer 1

我找到了解决问题的方法，我会post以防其他人遇到类似问题

let
    api_fnName = let
    Value.WaitFor = (producer as function, interval as function, optional count as number) as any =>
        let
            list = List.Generate(
                () => {0, null},
                (state) => state{0} <> null and (count = null or state{0} < count),
                (state) => if state{1} <> null
                    then {null, state{1}}
                    else {1 + state{0}, Function.InvokeAfter(() => producer(state{0}), interval(state{0}))},
                (state) => state{1})
        in
            List.Last(list),
    Web.ContentsCustomRetry = (url as text, optional options as record) => Value.WaitFor(
        (i) =>
            let
                options2 = if options = null then [] else options,
                options3 = if i=0 then options2 else options2 & [IsRetry=true],
                result = Web.Contents(url, options3 & [ManualStatusHandling={500}]),
                buffered = Binary.Buffer(result), /* avoid risk of double request */
                status = if buffered = null then 0 else Value.Metadata(result)[Response.Status],
                actualResult = if status = 500 then null else buffered
            in
                actualResult,
        (i) => #duration(0, 0, 0, i*0.1))
in
    Json.Document(Web.ContentsCustomRetry("api url")),
    results = api_fnName[results],
    results1 = results{0},
    data = results1[data],
    #"Converted to Table" = Record.ToTable(data),
    #"Kept Range of Rows" = Table.Range(#"Converted to Table",4,1)
in
    #"Kept Range of Rows"

Excel 电源查询给出 DataSource.Error web.content 未能从 api url 获取内容 (404)：未找到

Excel power query gives DataSource.Error web.content failed to get content from api url (404):Not Found

excel

excel-web-query

powerquery

powerbi

excel-2016