请帮忙看看这是什么原因？？？？

[zy1314922]

2014-8-26 2:39:55 org.apache.coyote.AbstractProtocol$AbstractConnectionHandler process
严重: Error reading request, ignored
java.lang.NoClassDefFoundError: Could not initialize class org.apache.coyote.ajp.AjpProcessor
at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.createProcessor(AjpProtocol.java:134)
at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.createProcessor(AjpProtocol.java:88)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:586)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:662)

[chenyi0834]

百度下 Error reading request, ignored