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java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver

Java JavaScript MySQL

ShallHurk 2017-02-04 17:43:18

java.lang.ClassNotFoundException:?org.gjt.mm.mysql.Driver at?org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1856) at?org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1705) at?org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:126) at?org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:63) at?java.lang.Class.forName0(Native?Method) at?java.lang.Class.forName(Unknown?Source) at?org.apache.jsp.chapter5.login_005fcheck_jsp._jspService(login_005fcheck_jsp.java:117) at?org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at?javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at?org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:439) at?org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395) at?org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339) 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.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at?org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at?org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at?org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at?org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at?org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) 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:956) at?org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at?org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423) at?org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079) at?org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625) at?org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) at?java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown?Source) at?java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown?Source) at?org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at?java.lang.Thread.run(Unknown?Source)正如題目所示，eclipse連接不上mysql,表示已經(jīng)導(dǎo)入mysql驅(qū)動包，并且路徑org.gjt.mm.mysql.Driver也是正確的，但就是一直出錯誤，求大神指點！

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3 回答

ShallHurk

TA貢獻4條經(jīng)驗獲得超0個贊

已經(jīng)搞定，謝謝大家的回答，其實就是重新?lián)Q了一個jar包，并且將jar包放到Tomcat的common/lib文件夾中就可以了。

反對回復(fù) 2017-02-04

蝸牛__

TA貢獻9條經(jīng)驗獲得超7個贊

加載驅(qū)動了嗎？?

? ? Class.forName("com.mysql.jdbc.Driver")?;

反對回復(fù) 2017-02-04

ShallHurk
你好，也已經(jīng)加載驅(qū)動了，但還是不行。

回復(fù) 2017-02-04
蝸牛__
如果用你的那個包，加載驅(qū)動應(yīng)該這樣寫 Class.forName("org.gjt.mm.mysql.Driver");（找你包下的Driver在哪，按照那個路徑寫下去）, 如果是mysql官方的驅(qū)動包才是這樣寫 Class.forName("com.mysql.jdbc.Driver") ;

回復(fù) 2017-02-04
ShallHurk
我寫的是自己的包的路徑，沒錯的

回復(fù) 2017-02-04