WSO2開發人員工作室給出了錯誤，但它在生產中起作用

Question

所以我在生產中有這兩行代碼。 cb0token和cb-email是自定義的頭文件，並且效果很好，但生產環境中存在很多其他問題，所以我試圖使其與開發人員工作室兼容。我得到了大量的錯誤，但我不能爲我的生活解決這個問題。

<?xml version="1.0" encoding="UTF-8"?> 
<sequence name="UserSessionValidate" onError="ReturnError" xmlns="http://ws.apache.org/ns/synapse"> 
    <property name="token" expression="$trp:cb-token" /> 
    <property name="email" expression="$trp:cb-email" /> 
</sequence> 

然而，這是行得通的。我只是不能讓表達式工作。我在表達式中嘗試了其他變量，但沒有任何結果。試圖保存在Developer Studio中的文件（在Eclipse），但是當我收到以下錯誤

<?xml version="1.0" encoding="UTF-8"?> 
<sequence name="UserSessionValidate" onError="ReturnError" xmlns="http://ws.apache.org/ns/synapse"> 
    <property name="token" value="value" scope="operation" type="STRING" description="token"/> 
</sequence> 

此代碼投入生產。

java.lang.RuntimeException: XPathFactory#newInstance() failed to create an XPathFactory for the default object model: http://java.sun.com/jaxp/xpath/dom with the XPathFactoryConfigurationException: javax.xml.xpath.XPathFactoryConfigurationException: java.util.ServiceConfigurationError: javax.xml.xpath.XPathFactory: bundleresource://1009.fwk142638629:21/META-INF/services/javax.xml.xpath.XPathFactory:2: Illegal configuration-file syntax 
at javax.xml.xpath.XPathFactory.newInstance(Unknown Source) 
at org.apache.synapse.util.xpath.SynapseXPath.<init>(SynapseXPath.java:104) 
at org.wso2.developerstudio.eclipse.gmf.esb.internal.persistence.custom.CustomSynapsePathFactory.getSynapsePath(CustomSynapsePathFactory.java:44) 
at org.wso2.developerstudio.eclipse.gmf.esb.internal.persistence.PropertyMediatorTransformer.createPropertyMediator(PropertyMediatorTransformer.java:171) 
at org.wso2.developerstudio.eclipse.gmf.esb.internal.persistence.PropertyMediatorTransformer.transformWithinSequence(PropertyMediatorTransformer.java:74) 
at org.wso2.developerstudio.eclipse.gmf.esb.internal.persistence.AbstractEsbNodeTransformer.doTransformWithinSequence(AbstractEsbNodeTransformer.java:103) 
at org.wso2.developerstudio.eclipse.gmf.esb.internal.persistence.SequenceTransformer.transformWithinSequence(SequenceTransformer.java:75) 
at org.wso2.developerstudio.eclipse.gmf.esb.internal.persistence.DefaultEsbModelExporter.transformSequence(DefaultEsbModelExporter.java:179) 
at org.wso2.developerstudio.eclipse.gmf.esb.internal.persistence.DefaultEsbModelExporter.designToSource(DefaultEsbModelExporter.java:324) 
at org.wso2.developerstudio.eclipse.gmf.esb.diagram.part.EsbObjectSourceEditor.update(EsbObjectSourceEditor.java:135) 
at org.wso2.developerstudio.eclipse.gmf.esb.diagram.part.EsbMultiPageEditor.updateSourceEditor(EsbMultiPageEditor.java:548) 
at org.wso2.developerstudio.eclipse.gmf.esb.diagram.part.EsbMultiPageEditor.handleSourceViewActivatedEvent(EsbMultiPageEditor.java:541) 
at org.wso2.developerstudio.eclipse.gmf.esb.diagram.part.EsbMultiPageEditor.pageChange(EsbMultiPageEditor.java:499) 
at org.eclipse.ui.part.MultiPageEditorPart$2.widgetSelected(MultiPageEditorPart.java:292) 
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248) 
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) 
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057) 
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1081) 
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1066) 
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:778) 
at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3080) 
at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1772) 
at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:279) 
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) 
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057) 
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4170) 
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3759) 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113) 
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997) 
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:140) 
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:611) 
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) 
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567) 
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) 
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124) 
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) 
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) 
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) 
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354) 
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
at java.lang.reflect.Method.invoke(Unknown Source) 
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636) 
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591) 
at org.eclipse.equinox.launcher.Main.run(Main.java:1450) 
at org.eclipse.equinox.launcher.Main.main(Main.java:1426) 

會話數據

eclipse.buildId=4.3.2.M20140221-1700 
java.version=1.8.0_05 
java.vendor=Oracle Corporation 
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_GB 
Framework arguments: -product org.eclipse.epp.package.jee.product 
Command-line arguments: -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.jee.product 

Answer 1

我剛剛經歷了類似的問題的工作。它看起來像你正在嘗試使用Java 8，這似乎是不受支持（和破碎）。嘗試卸載所有Java版本，並只安裝Java 7中

WSO2 Developer Studio (3.7.1) error when using expression get-property

Answer 2

您不必刪除或重新安裝的Java。在eclipse.ini文件中，你可以設置具體的jdk使用。只需在-vmargs之前添加-vm參數。

例如：

--launcher.appendVmargs 
-vm 
C:\Program Files\Java\jdk1.7.0_75\bin\javaw.exe  
-vmargs  
-Dosgi.requiredJavaVersion=1.6  
-Xms40m  
-Xmx512m