Question

我需要将我的Spotfire数据表作为csv发送到Web服务，然后用服务响应替换数据表。我假设这可以通过IronPython在按钮后面完成。有什么想法吗？

Answer 1

我已经解决了类似的问题，但我使用的方法不同于按钮后面提出的IronPython脚本。

就我而言，我创建了一个独立的C＃/ ASP.NET Web应用程序，并将Spotfire Web Player嵌入到应用程序中。

我使用Spotfire JavaScript API来获取Spotfire Web嵌入式部分中用户标记的数据，然后通过JavaScript调用将其发送到应用程序上的webservice。 Web服务进行了一些处理并将数据发送到其他目的地。

所以我的场景有点不同，但对于你的场景，你也会考虑使用这种方法将Spotfire Web嵌入到你完全可以控制的应用程序中，而不是使用IronPython脚本。

Answer 2

此代码回答了您的要求的第二部分，但我认为它也可以作为第一部分的良好起点。

从Web服务添加JSON或XML数据

XML示例

import clr
clr.AddReference('System.Data')
import System
from System import DateTime
from System.Data import DataSet, DataTable, XmlReadMode
from System.IO import StringReader, StreamReader, StreamWriter, MemoryStream, SeekOrigin
from System.Net import HttpWebRequest
from Spotfire.Dxp.Data import DataType, DataTableSaveSettings
from Spotfire.Dxp.Data.Import import TextFileDataSource, TextDataReaderSettings

# get stock quotes data in XML format from Yahoo Finance API
tickerSymbol = Document.Properties["TickerSymbol"]
startDate = DateTime.Today.AddMonths(-3).ToString("yyyy-MM-dd")
endDate = DateTime.Today.ToString("yyyy-MM-dd")
uri = "http://query.yahooapis.com/v1/public/yql?q=select * from yahoo.finance.historicaldata where symbol = %22" + tickerSymbol + "%22 and startDate = %22" + startDate + "%22 and endDate = %22" + endDate + "%22&format=xml&diagnostics=true&env=store://datatables.org/alltableswithkeys"
webRequest = HttpWebRequest.Create(uri)
response = webRequest.GetResponse()
streamReader = StreamReader(response.GetResponseStream())
xmlData = streamReader.ReadToEnd()
stringReader = StringReader(xmlData)

# read desired data fields from XML into a DataSet
dataSet = DataSet()
dataTable = DataTable("quote")
dataTable.Columns.Add("Date", System.String)
dataTable.Columns.Add("Close", System.String)
dataSet.Tables.Add(dataTable)
dataSet.ReadXml(stringReader, XmlReadMode.IgnoreSchema)

# build a string representing the data in tab-delimited text format
textData = "Symbol\tDate\tClose\r\n"
for row in dataTable.Rows:
 textData += tickerSymbol + "\t" + "\t".join(row.ItemArray) + "\r\n"

# make a stream from the string
stream = MemoryStream()
writer = StreamWriter(stream)
writer.Write(textData)
writer.Flush()
stream.Seek(0, SeekOrigin.Begin)

# set up the text data reader
readerSettings = TextDataReaderSettings()
readerSettings.Separator = "\t"
readerSettings.AddColumnNameRow(0)
readerSettings.SetDataType(0, DataType.String)
readerSettings.SetDataType(1, DataType.Date)
readerSettings.SetDataType(2, DataType.Currency)

# create a data source to read in the stream
textDataSource = TextFileDataSource(stream, readerSettings)

# add the data into a Data Table in Spotfire
if Document.Data.Tables.Contains("Stock Data"):
 Document.Data.Tables["Stock Data"].ReplaceData(textDataSource)
else:
 newTable = Document.Data.Tables.Add("Stock Data", textDataSource)
 tableSettings = DataTableSaveSettings (newTable, False, False)
 Document.Data.SaveSettings.DataTableSettings.Add(tableSettings)

JSON示例

import clr
clr.AddReference('System.Data')
clr.AddReference('System.Web.Extensions')
import System
from System import DateTime
from System.Data import DataSet, DataTable
from System.IO import StreamReader, StreamWriter, MemoryStream, SeekOrigin
from System.Net import HttpWebRequest
from System.Web.Script.Serialization import JavaScriptSerializer
from Spotfire.Dxp.Data import DataType, DataTableSaveSettings
from Spotfire.Dxp.Data.Import import TextFileDataSource, TextDataReaderSettings

# get stock quotes data in JSON format from Yahoo Finance API
tickerSymbol = Document.Properties["TickerSymbol"]
startDate = DateTime.Today.AddMonths(-3).ToString("yyyy-MM-dd")
endDate = DateTime.Today.ToString("yyyy-MM-dd")
uri = "http://query.yahooapis.com/v1/public/yql?q=select * from yahoo.finance.historicaldata where symbol = %22" + tickerSymbol + "%22 and startDate = %22" + startDate + "%22 and endDate = %22" + endDate + "%22&format=json&diagnostics=true&env=store://datatables.org/alltableswithkeys"
webRequest = HttpWebRequest.Create(uri)
response = webRequest.GetResponse()
streamReader = StreamReader(response.GetResponseStream())
jsonData = streamReader.ReadToEnd()
js = JavaScriptSerializer()
dataDict = js.Deserialize(jsonData,object)

# build a string representing the data in tab-delimited text format
textData = "Symbol\tDate\tClose\r\n" 
for quote in dataDict["query"]["results"]["quote"]:
     textData += tickerSymbol + "\t" + quote["Date"] + "\t" + quote["Close"] + "\r\n"

# make a stream from the string
stream = MemoryStream()
writer = StreamWriter(stream)
writer.Write(textData)
writer.Flush()
stream.Seek(0, SeekOrigin.Begin)

# set up the text data reader
readerSettings = TextDataReaderSettings()
readerSettings.Separator = "\t"
readerSettings.AddColumnNameRow(0)
readerSettings.SetDataType(0, DataType.String)
readerSettings.SetDataType(1, DataType.Date)
readerSettings.SetDataType(2, DataType.Currency)

# create a data source to read in the stream
textDataSource = TextFileDataSource(stream, readerSettings)

# add the data into a Data Table in Spotfire
if Document.Data.Tables.Contains("Stock Data"):
     Document.Data.Tables["Stock Data"].ReplaceData(textDataSource)
else:
     newTable = Document.Data.Tables.Add("Stock Data", textDataSource)
     tableSettings = DataTableSaveSettings (newTable, False, False)
     Document.Data.SaveSettings.DataTableSettings.Add(tableSettings)

来源： http://spotfired.blogspot.com/search?q=web+service http://spotfire.tibco.com/tips/2014/03/03/streaming-xml-and-json-data-from-the-web-directly-into-spotfire-clients-using-script-controls/

如何将Spotfire数据表作为csv发送到Web服务，然后用服务响应替换数据表？

2 个答案: