Xpages ExtLibUtil.getCurrentSessionAsSigner（）返回null

我在beforePageLoad事件上运行了一些java代码。我尝试在构造函数中使用ExtLibUtil类来获取sessionAsSigner对象，但我收到null不幸。这可能是什么原因？这是我的班。Xpages ExtLibUtil.getCurrentSessionAsSigner（）返回null

package com.mycompany.activiti; 

public class ActivitiWorkflow { 
    private Session sAsSigner = null; 
    private String currentUser = null; 
    private Database db 

    public ActivitiWorkflow() throws NotesException { 
     currentUser = DominoUtils.getCurrentSession().getEffectiveUserName();  
     sAsSigner = ExtLibUtil.getCurrentSessionAsSigner(); 

     db = sAsSigner.getCurrentDatabase(); 
     //... 
    } 

    public void foo(){...} 
}

我用下面的代码在beforePageLoad事件运行：

importPackage(com.mycompany.activiti); 
var workflow:ActivitiWorkflow = new ActivitiWorkflow(); 
workflow.foo();

我用下面的堆栈跟踪

com.ibm.xsp.exception.EvaluationExceptionEx: Error while executing JavaScript action expression 
    com.ibm.xsp.binding.javascript.JavaScriptMethodBinding.invoke(JavaScriptMethodBinding.java:126) 
    com.ibm.xsp.component.UIIncludeComposite.initBeforePageContents(UIIncludeComposite.java:672) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:339) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.createTree(AbstractCompiledPage.java:256) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.addComponent(AbstractCompiledPage.java:389) 
    com.ibm.xsp.component.UIIncludeComposite.buildContents(UIIncludeComposite.java:453) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:334) 
    com.ibm.xsp.page.compiled.CompiledComponentBuilder.buildChildren(CompiledComponentBuilder.java:123) 
    com.ibm.xsp.page.compiled.CompiledComponentBuilder.buildAll(CompiledComponentBuilder.java:84) 
    com.ibm.xsp.component.UIViewRootEx.buildContents(UIViewRootEx.java:1649) 
    com.ibm.xsp.component.UIViewRootEx2.buildContents(UIViewRootEx2.java:247) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:334) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.createTree(AbstractCompiledPage.java:256) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.createViewRoot(AbstractCompiledPage.java:167) 
    com.ibm.xsp.application.ViewHandlerExImpl._createViewRoot(ViewHandlerExImpl.java:521) 
    com.ibm.xsp.application.ViewHandlerExImpl.createViewRoot(ViewHandlerExImpl.java:567) 
    com.ibm.xsp.application.ViewHandlerExImpl.doCreateView(ViewHandlerExImpl.java:142) 
    com.ibm.xsp.application.ViewHandlerEx.createView(ViewHandlerEx.java:90) 
    com.ibm.xsp.webapp.FacesServlet.serviceView(FacesServlet.java:251) 
    com.ibm.xsp.webapp.FacesServletEx.serviceView(FacesServletEx.java:157) 
    com.ibm.xsp.webapp.FacesServlet.service(FacesServlet.java:160) 
    com.ibm.xsp.webapp.FacesServletEx.service(FacesServletEx.java:138) 
    com.ibm.xsp.webapp.DesignerFacesServlet.service(DesignerFacesServlet.java:103) 
    com.ibm.designer.runtime.domino.adapter.ComponentModule.invokeServlet(ComponentModule.java:576) 
    com.ibm.domino.xsp.module.nsf.NSFComponentModule.invokeServlet(NSFComponentModule.java:1335) 
    com.ibm.designer.runtime.domino.adapter.ComponentModule$AdapterInvoker.invokeServlet(ComponentModule.java:853) 
    com.ibm.designer.runtime.domino.adapter.ComponentModule$ServletInvoker.doService(ComponentModule.java:796) 
    com.ibm.designer.runtime.domino.adapter.ComponentModule.doService(ComponentModule.java:565) 
    com.ibm.domino.xsp.module.nsf.NSFComponentModule.doService(NSFComponentModule.java:1319) 
    com.ibm.domino.xsp.module.nsf.NSFService.doServiceInternal(NSFService.java:662) 
    com.ibm.domino.xsp.module.nsf.NSFService.doService(NSFService.java:482) 
    com.ibm.designer.runtime.domino.adapter.LCDEnvironment.doService(LCDEnvironment.java:357) 
    com.ibm.designer.runtime.domino.adapter.LCDEnvironment.service(LCDEnvironment.java:313) 
    com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:272) 
com.ibm.jscript.InterpretException: Script interpreter error, line=141, col=45: Error while calling java constructor 'com.mycompany.activiti.ActivitiWorkflow()' (java.lang.reflect.InvocationTargetException). 
    com.ibm.jscript.types.JavaAccessObject.construct(JavaAccessObject.java:262) 
    com.ibm.jscript.types.JavaWrapperObject.construct(JavaWrapperObject.java:1) 
    com.ibm.jscript.ASTTree.ASTNew.interpret(ASTNew.java:109) 
    com.ibm.jscript.ASTTree.ASTVariableDecl.interpret(ASTVariableDecl.java:82) 
    com.ibm.jscript.ASTTree.ASTDebug.interpret(ASTDebug.java:148) 
    com.ibm.jscript.std.FunctionObject._executeFunction(FunctionObject.java:261) 
    com.ibm.jscript.std.FunctionObject.executeFunction(FunctionObject.java:185) 
    com.ibm.jscript.std.FunctionObject.call(FunctionObject.java:171) 
    com.ibm.jscript.types.FBSObject.call(FBSObject.java:161) 
    com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197) 
    com.ibm.jscript.ASTTree.ASTArgumentList.interpretArguments(ASTArgumentList.java:65) 
    com.ibm.jscript.types.FBSObject.call(FBSObject.java:153) 
    com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197) 
    com.ibm.jscript.ASTTree.ASTDebug.interpret(ASTDebug.java:148) 
    com.ibm.jscript.ASTTree.ASTBlock.interpret(ASTBlock.java:100) 
    com.ibm.jscript.ASTTree.ASTDebug.interpret(ASTDebug.java:148) 
    com.ibm.jscript.ASTTree.ASTIf.interpret(ASTIf.java:85) 
    com.ibm.jscript.ASTTree.ASTDebug.interpret(ASTDebug.java:148) 
    com.ibm.jscript.std.FunctionObject._executeFunction(FunctionObject.java:261) 
    com.ibm.jscript.std.FunctionObject.executeFunction(FunctionObject.java:185) 
    com.ibm.jscript.std.FunctionObject.call(FunctionObject.java:171) 
    com.ibm.jscript.types.FBSObject.call(FBSObject.java:161) 
    com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197) 
    com.ibm.jscript.ASTTree.ASTDebug.interpret(ASTDebug.java:148) 
    com.ibm.jscript.ASTTree.ASTProgram.interpret(ASTProgram.java:119) 
    com.ibm.jscript.ASTTree.ASTProgram.interpretEx(ASTProgram.java:139) 
    com.ibm.jscript.JSExpression._interpretExpression(JSExpression.java:435) 
    com.ibm.jscript.JSExpression.access$1(JSExpression.java:424) 
    com.ibm.jscript.JSExpression$2.run(JSExpression.java:414) 
    java.security.AccessController.doPrivileged(AccessController.java:448) 
    com.ibm.jscript.JSExpression.interpretExpression(JSExpression.java:410) 
    com.ibm.jscript.JSExpression.evaluateValue(JSExpression.java:251) 
    com.ibm.jscript.JSExpression.evaluateValue(JSExpression.java:234) 
    com.ibm.xsp.javascript.JavaScriptInterpreter.interpret(JavaScriptInterpreter.java:222) 
    com.ibm.xsp.binding.javascript.JavaScriptMethodBinding.invoke(JavaScriptMethodBinding.java:111) 
    com.ibm.xsp.component.UIIncludeComposite.initBeforePageContents(UIIncludeComposite.java:672) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:339) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.createTree(AbstractCompiledPage.java:256) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.addComponent(AbstractCompiledPage.java:389) 
    com.ibm.xsp.component.UIIncludeComposite.buildContents(UIIncludeComposite.java:453) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:334) 
    com.ibm.xsp.page.compiled.CompiledComponentBuilder.buildChildren(CompiledComponentBuilder.java:123) 
    com.ibm.xsp.page.compiled.CompiledComponentBuilder.buildAll(CompiledComponentBuilder.java:84) 
    com.ibm.xsp.component.UIViewRootEx.buildContents(UIViewRootEx.java:1649) 
    com.ibm.xsp.component.UIViewRootEx2.buildContents(UIViewRootEx2.java:247) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:334) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.createTree(AbstractCompiledPage.java:256) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.createViewRoot(AbstractCompiledPage.java:167) 
    com.ibm.xsp.application.ViewHandlerExImpl._createViewRoot(ViewHandlerExImpl.java:521) 
    com.ibm.xsp.application.ViewHandlerExImpl.createViewRoot(ViewHandlerExImpl.java:567) 
    com.ibm.xsp.application.ViewHandlerExImpl.doCreateView(ViewHandlerExImpl.java:142) 
    com.ibm.xsp.application.ViewHandlerEx.createView(ViewHandlerEx.java:90) 
    com.ibm.xsp.webapp.FacesServlet.serviceView(FacesServlet.java:251) 
    com.ibm.xsp.webapp.FacesServletEx.serviceView(FacesServletEx.java:157) 
    com.ibm.xsp.webapp.FacesServlet.service(FacesServlet.java:160) 
    com.ibm.xsp.webapp.FacesServletEx.service(FacesServletEx.java:138) 
    com.ibm.xsp.webapp.DesignerFacesServlet.service(DesignerFacesServlet.java:103) 
    com.ibm.designer.runtime.domino.adapter.ComponentModule.invokeServlet(ComponentModule.java:576) 
    com.ibm.domino.xsp.module.nsf.NSFComponentModule.invokeServlet(NSFComponentModule.java:1335) 
    com.ibm.designer.runtime.domino.adapter.ComponentModule$AdapterInvoker.invokeServlet(ComponentModule.java:853) 
    com.ibm.designer.runtime.domino.adapter.ComponentModule$ServletInvoker.doService(ComponentModule.java:796) 
    com.ibm.designer.runtime.domino.adapter.ComponentModule.doService(ComponentModule.java:565) 
    com.ibm.domino.xsp.module.nsf.NSFComponentModule.doService(NSFComponentModule.java:1319) 
    com.ibm.domino.xsp.module.nsf.NSFService.doServiceInternal(NSFService.java:662) 
    com.ibm.domino.xsp.module.nsf.NSFService.doService(NSFService.java:482) 
    com.ibm.designer.runtime.domino.adapter.LCDEnvironment.doService(LCDEnvironment.java:357) 
    com.ibm.designer.runtime.domino.adapter.LCDEnvironment.service(LCDEnvironment.java:313) 
    com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:272) 
java.lang.reflect.InvocationTargetException 
    sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
    sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:56) 
    sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:39) 
    java.lang.reflect.Constructor.newInstance(Constructor.java:527) 
    com.ibm.jscript.types.JavaAccessObject.construct(JavaAccessObject.java:260) 
    com.ibm.jscript.types.JavaWrapperObject.construct(JavaWrapperObject.java:1) 
    com.ibm.jscript.ASTTree.ASTNew.interpret(ASTNew.java:109) 
    com.ibm.jscript.ASTTree.ASTVariableDecl.interpret(ASTVariableDecl.java:82) 
    com.ibm.jscript.ASTTree.ASTDebug.interpret(ASTDebug.java:148) 
    com.ibm.jscript.std.FunctionObject._executeFunction(FunctionObject.java:261) 
    com.ibm.jscript.std.FunctionObject.executeFunction(FunctionObject.java:185) 
    com.ibm.jscript.std.FunctionObject.call(FunctionObject.java:171) 
    com.ibm.jscript.types.FBSObject.call(FBSObject.java:161) 
    com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197) 
    com.ibm.jscript.ASTTree.ASTArgumentList.interpretArguments(ASTArgumentList.java:65) 
    com.ibm.jscript.types.FBSObject.call(FBSObject.java:153) 
    com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197) 
    com.ibm.jscript.ASTTree.ASTDebug.interpret(ASTDebug.java:148) 
    com.ibm.jscript.ASTTree.ASTBlock.interpret(ASTBlock.java:100) 
    com.ibm.jscript.ASTTree.ASTDebug.interpret(ASTDebug.java:148) 
    com.ibm.jscript.ASTTree.ASTIf.interpret(ASTIf.java:85) 
    com.ibm.jscript.ASTTree.ASTDebug.interpret(ASTDebug.java:148) 
    com.ibm.jscript.std.FunctionObject._executeFunction(FunctionObject.java:261) 
    com.ibm.jscript.std.FunctionObject.executeFunction(FunctionObject.java:185) 
    com.ibm.jscript.std.FunctionObject.call(FunctionObject.java:171) 
    com.ibm.jscript.types.FBSObject.call(FBSObject.java:161) 
    com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197) 
    com.ibm.jscript.ASTTree.ASTDebug.interpret(ASTDebug.java:148) 
    com.ibm.jscript.ASTTree.ASTProgram.interpret(ASTProgram.java:119) 
    com.ibm.jscript.ASTTree.ASTProgram.interpretEx(ASTProgram.java:139) 
    com.ibm.jscript.JSExpression._interpretExpression(JSExpression.java:435) 
    com.ibm.jscript.JSExpression.access$1(JSExpression.java:424) 
    com.ibm.jscript.JSExpression$2.run(JSExpression.java:414) 
    java.security.AccessController.doPrivileged(AccessController.java:448) 
    com.ibm.jscript.JSExpression.interpretExpression(JSExpression.java:410) 
    com.ibm.jscript.JSExpression.evaluateValue(JSExpression.java:251) 
    com.ibm.jscript.JSExpression.evaluateValue(JSExpression.java:234) 
    com.ibm.xsp.javascript.JavaScriptInterpreter.interpret(JavaScriptInterpreter.java:222) 
    com.ibm.xsp.binding.javascript.JavaScriptMethodBinding.invoke(JavaScriptMethodBinding.java:111) 
    com.ibm.xsp.component.UIIncludeComposite.initBeforePageContents(UIIncludeComposite.java:672) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:339) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.createTree(AbstractCompiledPage.java:256) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.addComponent(AbstractCompiledPage.java:389) 
    com.ibm.xsp.component.UIIncludeComposite.buildContents(UIIncludeComposite.java:453) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:334) 
    com.ibm.xsp.page.compiled.CompiledComponentBuilder.buildChildren(CompiledComponentBuilder.java:123) 
    com.ibm.xsp.page.compiled.CompiledComponentBuilder.buildAll(CompiledComponentBuilder.java:84) 
    com.ibm.xsp.component.UIViewRootEx.buildContents(UIViewRootEx.java:1649) 
    com.ibm.xsp.component.UIViewRootEx2.buildContents(UIViewRootEx2.java:247) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:334) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.createTree(AbstractCompiledPage.java:256) 
    com.ibm.xsp.page.compiled.AbstractCompiledPage.createViewRoot(AbstractCompiledPage.java:167) 
    com.ibm.xsp.application.ViewHandlerExImpl._createViewRoot(ViewHandlerExImpl.java:521) 
    com.ibm.xsp.application.ViewHandlerExImpl.createViewRoot(ViewHandlerExImpl.java:567) 
    com.ibm.xsp.application.ViewHandlerExImpl.doCreateView(ViewHandlerExImpl.java:142) 
    com.ibm.xsp.application.ViewHandlerEx.createView(ViewHandlerEx.java:90) 
    com.ibm.xsp.webapp.FacesServlet.serviceView(FacesServlet.java:251) 
    com.ibm.xsp.webapp.FacesServletEx.serviceView(FacesServletEx.java:157) 
    com.ibm.xsp.webapp.FacesServlet.service(FacesServlet.java:160) 
    com.ibm.xsp.webapp.FacesServletEx.service(FacesServletEx.java:138) 
    com.ibm.xsp.webapp.DesignerFacesServlet.service(DesignerFacesServlet.java:103) 
    com.ibm.designer.runtime.domino.adapter.ComponentModule.invokeServlet(ComponentModule.java:576) 
    com.ibm.domino.xsp.module.nsf.NSFComponentModule.invokeServlet(NSFComponentModule.java:1335) 
    com.ibm.designer.runtime.domino.adapter.ComponentModule$AdapterInvoker.invokeServlet(ComponentModule.java:853) 
    com.ibm.designer.runtime.domino.adapter.ComponentModule$ServletInvoker.doService(ComponentModule.java:796) 
    com.ibm.designer.runtime.domino.adapter.ComponentModule.doService(ComponentModule.java:565) 
    com.ibm.domino.xsp.module.nsf.NSFComponentModule.doService(NSFComponentModule.java:1319) 
    com.ibm.domino.xsp.module.nsf.NSFService.doServiceInternal(NSFService.java:662) 
    com.ibm.domino.xsp.module.nsf.NSFService.doService(NSFService.java:482) 
    com.ibm.designer.runtime.domino.adapter.LCDEnvironment.doService(LCDEnvironment.java:357) 
    com.ibm.designer.runtime.domino.adapter.LCDEnvironment.service(LCDEnvironment.java:313) 
    com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:272) 
java.lang.NullPointerException 
    com.mycompany.activiti.ActivitiWorkflow.<init>(ActivitiWorkflow.java:88) 
    sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
    sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:56) 
    sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:39) 
    java.lang.reflect.Constructor.newInstance(Constructor.java:527) 
    com.ibm.jscript.types.JavaAccessObject.construct(JavaAccessObject.java:260) 
    com.ibm.jscript.types.JavaWrapperObject.construct(JavaWrapperObject.java:1) 
    com.ibm.jscript.ASTTree.ASTNew.interpret(ASTNew.java:109) 
    com.ibm.jscript.ASTTree.ASTVariableDecl.interpret(ASTVariableDecl.java:82) 
    com.ibm.jscript.ASTTree.ASTDebug.interpret(ASTDebug.java:148) 
    com.ibm.jscript.std.FunctionObject._executeFunction(FunctionObject.java:261) 
    com.ibm.jscript.std.FunctionObject.executeFunction(FunctionObject.java:185) 
    com.ibm.jscript.std.FunctionObject.call(FunctionObject.java:171) 
    com.ibm.jscript.types.FBSObject.call(FBSObject.java:161) 
    com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197) 
    com.ibm.jscript.ASTTree.ASTArgumentList.interpretArguments(ASTArgumentList.java:65) 
    com.ibm.jscript.types.FBSObject.call(FBSObject.java:153) 
    com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197) 
    com.ibm.jscript.ASTTree.ASTDebug.interpret(ASTDebug.java:148) 
    com.ibm.jscript.ASTTree.ASTBlock.interpret(ASTBlock.java:100) 
    com.ibm.jscript.ASTTree.ASTDebug.interpret(ASTDebug.java:148) 
    com.ibm.jscript.ASTTree.ASTIf.interpret(ASTIf.java:85) 
    com.ibm.jscript.ASTTree.ASTDebug.interpret(ASTDebug.java:148) 
    com.ibm.jscript.std.FunctionObject._executeFunction(FunctionObject.java:261) 
    com.ibm.jscript.std.FunctionObject.executeFunction(FunctionObject.java:185) 
    com.ibm.jscript.std.FunctionObject.call(FunctionObject.java:171) 
    com.ibm.jscript.types.FBSObject.call(FBSObject.java:161)

来源

2016-09-28 dj_universe

一两件事，以确保它读取的是，所有的设计元素NSF与相同的用户签署。否则sessionAsSigner可能会失败，并且在某些情况下（可能仍然在8.5.x服务器版本上）可能会导致服务器崩溃。

来源

2016-09-28 12:19:09

这可能是线索。当另一位开发人员进行了一些更改时，问题出现了我们一直在构建和清除应用程序，但不会辞职。 –

是的，签署一个数据库解决了这个问题。我想知道，如果我们每次都必须签署数据库，我们可以共同开发应用程序...... –

@dj_universe您可能想使用git或sourcetree查看源代码管理。每个开发者都有自己的数据库副本，并可以自己签署。 –

Xpages ExtLibUtil.getCurrentSessionAsSigner（）返回null

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