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                        /Servlet+Ajax实现搜索框智能提示

大神们帮我看一下这是什么情况

org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet [search] in context with path [/studyajax] threw exception [Servlet execution threw an exception] with root cause
java.lang.ClassNotFoundException: org.apache.commons.lang.exception.NestableRuntimeException
   at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1892)
   at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1735)
   at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
   at java.lang.ClassLoader.defineClass1(Native Method)
   at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
   at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
   at org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:3205)
   at org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:1373)
   at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1861)
   at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1735)
   at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
   at com.zkp.SearchServlet.doGet(SearchServlet.java:40)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:962)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
   at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1115)
   at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
   at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2549)
   at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2538)
   at java.util.concurrent.ThreadPoolExecutor$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:619)

月影三爷

2017-12-01

源自：Servlet+Ajax实现搜索框智能提示 2-6

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2 回答

吾爱阳
2017-12-09

servlet的url-pattern路径写的是不是有问题

0 回复有任何疑惑可以回复我~

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大叔_fighting
2017-12-08

1.servlet或jsp中，重复调用response的 getOutputStream()，response.getWriter()方法。

2.form表单里没有 method="post" action=""参数。

3.看JDBC操纵数据库的代码，仔细看，例如调用的对象的属性为null。

Connection conn=null；之后之就调用了conn的方法。