多年来，我一直在XPages中使用Apache Commons IO FileUtils。在我的一个应用程序中，几天前FileUtils（v2.5）突然停止工作。没有Domino更新，也没有对应用程序的构建路径进行任何更改。每当我尝试在服务器端JavaScript中从FileUtils调用函数时，都会引发如下异常：
在Java类'org.apache.commons.io.FileUtils'上找不到Java方法'writeStringToFile（java.io.File，string，string，boolean）'
在Java类'org.apache.commons.io.FileUtils'上找不到Java方法'moveFile（java.io.File，java.io.File）'
...即使存在相应的方法并且代码正常工作。
我已经多次重新启动Domino服务器，尝试多次清理和构建项目，多次从构建路径中删除了commons-io二进制文件并将其重新添加到构建路径中，但是没有任何方法可以解决问题。
有人知道如何解决此问题吗？
更新：异常的堆栈跟踪如下：
Java method 'writeStringToFile(java.io.File, string, string, boolean)' on java class 'org.apache.commons.io.FileUtils' not found
at com.ibm.jscript.types.JavaAccessObject.call(JavaAccessObject.java:377)
at com.ibm.jscript.types.FBSObject.call(FBSObject.java:161)
at com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197)
at com.ibm.jscript.ASTTree.ASTTry.interpret(ASTTry.java:109)
at com.ibm.jscript.std.FunctionObject._executeFunction(FunctionObject.java:261)
at com.ibm.jscript.std.FunctionObject.executeFunction(FunctionObject.java:185)
at com.ibm.jscript.std.FunctionObject.call(FunctionObject.java:171)
at com.ibm.jscript.types.FBSObject.call(FBSObject.java:161)
at com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197)
at com.ibm.jscript.std.FunctionObject._executeFunction(FunctionObject.java:261)
at com.ibm.jscript.std.FunctionObject.executeFunction(FunctionObject.java:185)
at com.ibm.jscript.std.FunctionObject.call(FunctionObject.java:171)
at com.ibm.jscript.types.FBSObject.call(FBSObject.java:161)
at com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197)
at com.ibm.jscript.ASTTree.ASTAssign.interpret(ASTAssign.java:91)
at com.ibm.jscript.ASTTree.ASTBlock.interpret(ASTBlock.java:100)
at com.ibm.jscript.ASTTree.ASTIf.interpret(ASTIf.java:90)
at com.ibm.jscript.std.FunctionObject._executeFunction(FunctionObject.java:261)
at com.ibm.jscript.std.FunctionObject.executeFunction(FunctionObject.java:185)
at com.ibm.jscript.std.FunctionObject.call(FunctionObject.java:171)
at com.ibm.jscript.types.FBSObject.call(FBSObject.java:161)
at com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197)
at com.ibm.jscript.ASTTree.ASTReturn.interpret(ASTReturn.java:49)
at com.ibm.jscript.std.FunctionObject._executeFunction(FunctionObject.java:261)
at com.ibm.jscript.std.FunctionObject.executeFunction(FunctionObject.java:185)
at com.ibm.jscript.std.FunctionObject.call(FunctionObject.java:171)
at com.ibm.jscript.types.FBSObject.call(FBSObject.java:161)
at com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197)
at com.ibm.jscript.ASTTree.ASTAssign.interpret(ASTAssign.java:91)
at com.ibm.jscript.ASTTree.ASTIf.interpret(ASTIf.java:79)
at com.ibm.jscript.ASTTree.ASTBlock.interpret(ASTBlock.java:100)
at com.ibm.jscript.ASTTree.ASTIf.interpret(ASTIf.java:85)
at com.ibm.jscript.ASTTree.ASTBlock.interpret(ASTBlock.java:100)
at com.ibm.jscript.ASTTree.ASTIf.interpret(ASTIf.java:85)
at com.ibm.jscript.std.FunctionObject._executeFunction(FunctionObject.java:261)
at com.ibm.jscript.std.FunctionObject.executeFunction(FunctionObject.java:185)
at com.ibm.jscript.std.FunctionObject.call(FunctionObject.java:171)
at com.ibm.jscript.std.FunctionPrototype$FunctionMethod.call(FunctionPrototype.java:169)
at com.ibm.jscript.types.FBSObject.call(FBSObject.java:161)
at com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197)
at com.ibm.jscript.ASTTree.ASTAssign.interpret(ASTAssign.java:91)
at com.ibm.jscript.ASTTree.ASTBlock.interpret(ASTBlock.java:100)
at com.ibm.jscript.ASTTree.ASTIf.interpret(ASTIf.java:85)
at com.ibm.jscript.ASTTree.ASTBlock.interpret(ASTBlock.java:100)
at com.ibm.jscript.ASTTree.ASTIf.interpret(ASTIf.java:85)
at com.ibm.jscript.std.FunctionObject._executeFunction(FunctionObject.java:261)
at com.ibm.jscript.std.FunctionObject.executeFunction(FunctionObject.java:185)
at com.ibm.jscript.std.FunctionObject.call(FunctionObject.java:171)
at com.ibm.jscript.std.FunctionPrototype$FunctionMethod.call(FunctionPrototype.java:169)
at com.ibm.jscript.types.FBSObject.call(FBSObject.java:161)
at com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197)
at com.ibm.jscript.ASTTree.ASTAssign.interpret(ASTAssign.java:91)
at com.ibm.jscript.ASTTree.ASTBlock.interpret(ASTBlock.java:100)
at com.ibm.jscript.ASTTree.ASTIf.interpret(ASTIf.java:85)
at com.ibm.jscript.ASTTree.ASTBlock.interpret(ASTBlock.java:100)
at com.ibm.jscript.ASTTree.ASTTry.interpret(ASTTry.java:109)
at com.ibm.jscript.std.FunctionObject._executeFunction(FunctionObject.java:261)
at com.ibm.jscript.std.FunctionObject.executeFunction(FunctionObject.java:185)
at com.ibm.jscript.std.FunctionObject.call(FunctionObject.java:171)
at com.ibm.jscript.types.FBSObject.call(FBSObject.java:161)
at com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197)
at com.ibm.jscript.ASTTree.ASTProgram.interpret(ASTProgram.java:119)
at com.ibm.jscript.ASTTree.ASTProgram.interpretEx(ASTProgram.java:139)
at com.ibm.jscript.JSExpression._interpretExpression(JSExpression.java:435)
at com.ibm.jscript.JSExpression.access$1(JSExpression.java:424)
at com.ibm.jscript.JSExpression$2.run(JSExpression.java:414)
at java.security.AccessController.doPrivileged(AccessController.java:686)
at com.ibm.jscript.JSExpression.interpretExpression(JSExpression.java:410)
at com.ibm.jscript.JSExpression.evaluateValue(JSExpression.java:251)
at com.ibm.jscript.JSExpression.evaluateValue(JSExpression.java:234)
at com.ibm.xsp.javascript.JavaScriptInterpreter.interpret(JavaScriptInterpreter.java:222)
at com.ibm.xsp.binding.javascript.JavaScriptMethodBinding.invoke(JavaScriptMethodBinding.java:111)
at com.ibm.xsp.component.UIViewRootEx.invokePhaseMethodBinding(UIViewRootEx.java:1735)
at com.ibm.xsp.controller.FacesControllerImpl.invokePhaseMethodBinding(FacesControllerImpl.java:450)
at com.ibm.xsp.controller.FacesControllerImpl.access$0(FacesControllerImpl.java:444)
at com.ibm.xsp.controller.FacesControllerImpl$ViewPhaseListener.beforePhase(FacesControllerImpl.java:533)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:197)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:120)
at com.ibm.xsp.controller.FacesControllerImpl.render(FacesControllerImpl.java:270)
at com.ibm.xsp.webapp.FacesServlet.serviceView(FacesServlet.java:260)
at com.ibm.xsp.webapp.FacesServletEx.serviceView(FacesServletEx.java:157)
at com.ibm.xsp.webapp.FacesServlet.service(FacesServlet.java:159)
at com.ibm.xsp.webapp.FacesServletEx.service(FacesServletEx.java:138)
at com.ibm.xsp.webapp.DesignerFacesServlet.service(DesignerFacesServlet.java:103)
at com.ibm.designer.runtime.domino.adapter.ComponentModule.invokeServlet(ComponentModule.java:588)
at com.ibm.domino.xsp.module.nsf.NSFComponentModule.invokeServlet(NSFComponentModule.java:1335)
at com.ibm.designer.runtime.domino.adapter.ComponentModule$AdapterInvoker.invokeServlet(ComponentModule.java:865)
at com.ibm.designer.runtime.domino.adapter.ComponentModule$ServletInvoker.doService(ComponentModule.java:808)
at com.ibm.designer.runtime.domino.adapter.ComponentModule.doService(ComponentModule.java:577)
at com.ibm.domino.xsp.module.nsf.NSFComponentModule.doService(NSFComponentModule.java:1319)
at com.ibm.domino.xsp.module.nsf.NSFService.doServiceInternal(NSFService.java:662)
at com.ibm.domino.xsp.module.nsf.NSFService.doService(NSFService.java:482)
at com.ibm.designer.runtime.domino.adapter.LCDEnvironment.doService(LCDEnvironment.java:357)
at com.ibm.designer.runtime.domino.adapter.LCDEnvironment.service(LCDEnvironment.java:313)
at com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:272)