BIRT：无法检索XML数据源。 XML数据源文件无效或文件不存在 [英] BIRT: XML data source cannot be retrieved. XML data source file is invalid or the file doesn't exist

问题描述

我创建了一个从本地应用程序获取XML数据的XML数据源。当创建数据集时，我收到以下错误。

  org.eclipse.datatools.connectivity.oda.OdaException：XML数据源无法检索。 XML数据源文件无效或文件不存在。 
在org.eclipse.datatools.enablement.oda.xml.ui.wizards.XPathChoosePage.populateXMLTree（XPathChoosePage.java:482）
在org.eclipse.datatools.enablement.oda.xml.ui。 wizards.XPathChoosePage.createPageCustomControl（XPathChoosePage.java:121）
在org.eclipse.datatools.connectivity.oda.design.ui.wizards.DataSetWizardPage.createControl（DataSetWizardPage.java:123）
在org。 eclipse.jface.wizard.Wizard.createPageControls（Wizard.java:174）
在org.eclipse.jface.wizard.WizardDialog.createPageControls（WizardDialog.java:736）
在org.eclipse.jface。 wizard.WizardDialog.setWizard（WizardDialog.java:1182）
在org.eclipse.jface.wizard.WizardDialog.updateForPage（WizardDialog.java:1241）
在org.eclipse.jface.wizard.WizardDialog。访问$ 4（WizardDialog.java:1238）
在org.eclipse.jface.wizard.WizardDialog $ 8.run（WizardDialog.java:1227）
在org.eclipse.swt.custom.BusyIndi​​cator.showWhile（ BusyIndi​​cator.java:70）
在org.eclipse.jface。 wizard.WizardDialog.showPage（WizardDialog.java:1225）
在org.eclipse.jface.wizard.WizardDialog.nextPressed（WizardDialog.java:915）
在org.eclipse.jface.wizard.WizardDialog。 buttonPressed（WizardDialog.java:428）
  

XML URL重新调用以下数据：

 < table> 
< row> 
< marketName> dd< / marketName> 
< goodsName>黑色大麦< / goodsName> 
< priceType>批发< / priceType> 
< pricePerQtl> 58.0< / pricePerQtl> 
< date> 2014-07-03 15：18：21< / date> 
< / row> 
< / table> 
  

解决方案

我只能在一个场景中再现开始前有空格标签。所以确保没有空格。

 <？xml version =1.0encoding =UTF-8？ > 
< table> 
< row> 
< marketName> dd< / marketName> 
< goodsName>黑色大麦< / goodsName> 
< priceType>批发< / priceType> 
< pricePerQtl> 58.0< / pricePerQtl> 
< date> 2014-07-03 15：18：21< / date> 
< / row> 
< / table> 
  

I created an XML data source that fetches XML data from a local application. when creating a data set I get the following error.

org.eclipse.datatools.connectivity.oda.OdaException: XML data source cannot be retrieved. XML data source file is invalid or the file doesn't exist.
    at org.eclipse.datatools.enablement.oda.xml.ui.wizards.XPathChoosePage.populateXMLTree(XPathChoosePage.java:482)
    at org.eclipse.datatools.enablement.oda.xml.ui.wizards.XPathChoosePage.createPageCustomControl(XPathChoosePage.java:121)
    at org.eclipse.datatools.connectivity.oda.design.ui.wizards.DataSetWizardPage.createControl(DataSetWizardPage.java:123)
    at org.eclipse.jface.wizard.Wizard.createPageControls(Wizard.java:174)
    at org.eclipse.jface.wizard.WizardDialog.createPageControls(WizardDialog.java:736)
    at org.eclipse.jface.wizard.WizardDialog.setWizard(WizardDialog.java:1182)
    at org.eclipse.jface.wizard.WizardDialog.updateForPage(WizardDialog.java:1241)
    at org.eclipse.jface.wizard.WizardDialog.access$4(WizardDialog.java:1238)
    at org.eclipse.jface.wizard.WizardDialog$8.run(WizardDialog.java:1227)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.jface.wizard.WizardDialog.showPage(WizardDialog.java:1225)
    at org.eclipse.jface.wizard.WizardDialog.nextPressed(WizardDialog.java:915)
    at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:428)

The XML URL retuns the following data:

<table>
  <row>
    <marketName>dd</marketName>
    <commodityName>Black Barley</commodityName>
    <priceType>Wholesale</priceType>
    <pricePerQtl>58.0</pricePerQtl>
    <date>2014-07-03 15:18:21</date>
  </row>
</table>

解决方案

I can only reproduce this in only in one scenario i.e there is whitespace before start tag. So make sure that there are no whitespaces.

<?xml version="1.0" encoding="UTF-8"?>
<table>
  <row>
    <marketName>dd</marketName>
    <commodityName>Black Barley</commodityName>
    <priceType>Wholesale</priceType>
    <pricePerQtl>58.0</pricePerQtl>
    <date>2014-07-03 15:18:21</date>
  </row>
</table>

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