工程已经导入了mysql的驱动包,但是servlet里 try{
Class.forName("com.mysql.jdbc.Driver");
System.out.println("ok");
}catch(ClassNotFoundException e){
e.printStackTrace();
}
老是抛异常,不知道为什么(另一个工程里,可以正确访问数据库)
Class.forName("com.mysql.jdbc.Driver");
System.out.println("ok");
}catch(ClassNotFoundException e){
e.printStackTrace();
}
老是抛异常,不知道为什么(另一个工程里,可以正确访问数据库)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1337)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1186)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at BasicServlet.init(BasicServlet.java:107)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1091)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:750)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:130)
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.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
Class.forName("org.gjt.mm.mysql.Driver");
这是大家公认的初学问题,听大家的每错,你再仔细检查一边,OK???