java.lang.NullPointerException

csdn.net | 7 months ago
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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at java.lang.String.<init>()
  2. Java RT
    String.<init>
    1. java.lang.String.<init>(Unknown Source)
    1 frame
  3. dao
    DES.decryptor
    1. dao.DES.decryptor(DES.java:48)
    1 frame
  4. filter
    MyFilter.doFilter
    1. filter.MyFilter.doFilter(MyFilter.java:36)
    1 frame
  5. Glassfish Core
    CoyoteAdapter.service
    1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    3. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
    4. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
    5. org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
    6. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
    7. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    8. org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
    9. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    10. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:521)
    10 frames
  6. Grizzly HTTP
    NioEndpoint$SocketProcessor.run
    1. org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1096)
    2. org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:674)
    3. org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
    4. org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
    4 frames
  7. Java RT
    ThreadPoolExecutor$Worker.run
    1. java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    2. java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    2 frames
  8. Tomcat Util
    TaskThread$WrappingRunnable.run
    1. org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    1 frame
  9. Java RT
    Thread.run
    1. java.lang.Thread.run(Unknown Source)
    1 frame