AspectJ和NoClassDefFoundError

Question

我有问题AspectJ。有没有人遇到过类似的东西？我在清单：

../src/java/com/ws/db/Logging.aj

../src/java/com/ws/db/Db.java

和纵横：

public aspect Logging { 

     pointcut prepareCall(String statement): call(* java.sql.Connection.prepareCall(String)) && args(statement) && 
     within(com.ws.db.Db); 

     before(String statement) : prepareCall(statement) { 
     if(logger.isDebugEnabled()) 
      logger.debug("before prepareCall called: statement="+statement); 
     } 

     after(String statement) : prepareCall(statement) { 
     if(logger.isDebugEnabled()) 
      logger.debug("after prepareCall called, "+statement); 
     } 
    } 

一切工作正常，但是当我添加此

pointcut createStm(): call(* java.sql.Connection.createStatement()) && 
    within(com.ws.db.Db); 

    before() : createStm() { 
    if(logger.isDebugEnabled()) 
     logger.debug("before called: "+thisJoinPoint); 
    } 

    after() : createStm() { 
    if(logger.isDebugEnabled()) 
     logger.debug("after called: "+thisJoinPoint); 
    } 

我收到以下例外情况：

而且它无法找到com.ws.db.Db，就像该类被更改并且无法检索它。

> org.apache.axis.EXCEPTIONS 2009-11-09 16:06:39,748 -- INFO -- Exception: 
    java.lang.NoClassDefFoundError 
    at java.lang.Class.forName0(Native Method) 
    at java.lang.Class.forName(Class.java:242) 
    at org.apache.axis.utils.ClassUtils$2.run(ClassUtils.java:177) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at org.apache.axis.utils.ClassUtils.loadClass(ClassUtils.java:160) 
    at org.apache.axis.utils.ClassUtils.forName(ClassUtils.java:142) 
    at org.apache.axis.utils.cache.ClassCache.lookup(ClassCache.java:85) 
    at org.apache.axis.providers.java.JavaProvider.getServiceClass(JavaProvider.java:428) 
    at org.apache.axis.providers.java.JavaProvider.initServiceDesc(JavaProvider.java:461) 
    at org.apache.axis.handlers.soap.SOAPService.getInitializedServiceDesc(SOAPService.java:286) 
    at org.apache.axis.deployment.wsdd.WSDDService.makeNewInstance(WSDDService.java:500) 
    at org.apache.axis.deployment.wsdd.WSDDDeployableItem.getNewInstance(WSDDDeployableItem.java:274) 
    at org.apache.axis.deployment.wsdd.WSDDDeployableItem.getInstance(WSDDDeployableItem.java:260) 
    at org.apache.axis.deployment.wsdd.WSDDDeployment.getService(WSDDDeployment.java:427) 
    at org.apache.axis.configuration.FileProvider.getService(FileProvider.java:231) 
    at org.apache.axis.AxisEngine.getService(AxisEngine.java:311) 
    at org.apache.axis.MessageContext.setTargetService(MessageContext.java:756) 
    at org.apache.axis.handlers.http.URLMapper.invoke(URLMapper.java:50) 
    at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32) 
    at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118) 
    at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83) 
    at org.apache.axis.server.AxisServer.invoke(AxisServer.java:239) 
    at org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:699) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:709) 
    at org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:327) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868) 
    at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663) 
    at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) 
    at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) 
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) 
    at java.lang.Thread.run(Thread.java:595) 

Answer 1

有趣的区别我的例子之间看到的是，在失败的一个，你使用thisJoinPoint。实现该功能的类位于AspectJ运行时库（aspectjrt.jar）中。也许你的Web应用程序的类路径中没有这个，第一个例子成功了，因为它不需要它？