Question

500 Internal Server Error

oracle-ilearning学员考试界面报错如下：
500 Internal Server Error
java.lang.NullPointerException at oracle.ila.assessment.view.TestPlayerBean.getCurrentPage(TestPlayerBean.java:352) at _en._assessment._jsp._test__player._jspService(_test__player.java:89) [SRC:/en/assessment/jsp/test_player.jsp:29] at oracle.ila.common.view.ILAJspPage.service(ILAJspPage.java:103) at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:347) at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:509) at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:413) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:765) at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317) at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790) at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.AJPRequestHandler.run(AJPRequestHandler.java:208) at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.AJPRequestHandler.run(AJPRequestHandler.java:125) at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192) at java.lang.Thread.run(Thread.java:534)
紧急非常感谢 ，请详细描述解决方案

Answer 1

java.lang.NullPointerException at oracle.ila.assessment.view.TestPlayerBean.getCurrentPage(TestPlayerBean.java:352)

抛出了：NullPointerException 异常。

说明在程序里使用了未初始化的变量。

看看这个文件的 TestPlayerBean.java 第 352 行做了什么？