The following error occurred while connecting to the database in Java:

Java.lang.ClassNotFoundException:com.mysql.jdbc.driverat Org.apache.catalina.loader.WebappClassLoader.loadClass (Webappclassloader.java:1438) at Org.apache.catalina.loader.WebappClassLoader.loadClass (Webappclassloader.java:1284) at JAVA.LANG.CLASS.FORNAME0 (Native Method) at Java.lang.Class.forName (Unknown Source) at Com.skybird.util.SqlHelper.<clinit> (sqlhelper.java:47) at Com.skybird.model.UserService.checkUser (Userservice.java:25) at Com.skybird.controller.LoginVerify.doPost (Loginverify.java:47) at Javax.servlet.http.HttpServlet.service (Httpservlet.java:647) at Javax.servlet.http.HttpServlet.service (Httpservlet.java:729) at Org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (Applicationfilterchain.java:269) at Org.apache.catalina.core.ApplicationFilterChain.doFilter (Applicationfilterchain.java:188) at Org.apache.catalina.core.StandardWrapperValve.invoke (Standardwrappervalve.java:213) at Org.apache.catalina.core.StandardContextValve.invoke (Standardcontextvalve.java:172) at Org.apache.catalina.core.StandardHostValve.invoke (Standardhostvalve.java:127) at Org.apache.catalina.valves.ErrorReportValve.invoke (Errorreportvalve.java:117) at Org.apache.catalina.core.StandardEngineValve.invoke (Standardenginevalve.java:108) at Org.apache.catalina.connector.CoyoteAdapter.service (Coyoteadapter.java:174) at Org.apache.coyote.http11.Http11Processor.process (Http11processor.java:881) at Org.apache.coyote.http11.http11baseprotocol$http11connectionhandler.processconnection ( Http11baseprotocol.java:674) at Org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket (Pooltcpendpoint.java:541) at Org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt (Leaderfollowerworkerthread.java:81) at Org.apache.tomcat.util.threads.threadpool$controlrunnable.run (Threadpool.java:689) at Java.lang.Thread.run (Unknown Source)

Then fix the error:

Java error when connecting to MySQL: Java.lang.ClassNotFoundException:com.mysql.jdbc.Driver (2013-08-14 15:20:12) reprint tag: Java MySQL The     solution is as follows: MySQL-connector-java-5.1.26-bin.jar to be imported into the project. In eclipse, just right-click the project folder Properties option -java  Build path-addextenal Archives added ... You can see it in the. classpath file after joining

Reference instance:

Http://www.cnblogs.com/longwu/articles/2310577.html

Problem-Solving References:

Http://blog.sina.com.cn/s/blog_9c5d29f70101ckuu.html

Other solutions that have similar problems are different;

The following error occurred while connecting to the database in Java: