Reprinted from: http://blog.csdn.net/huangbiao86/article/details/6428608
Problem Description : Connect the database, and obviously already dragged the Mysql-connector-java-5.1.7-bin.jar package to the project's Web-inf/lib directory, but the operation error is as follows:
Workaround:
It turned out that Tomcat could not find the MySQL jar package!
Mysql-connector-java-5.1.7-bin.jar must be imported into Tomcat's lib directory!
In a Java project, you just need to introduce Mysql-connector-java-5.1.7-bin.jar to run a Java project.
In a Web project, when Class.forName ("Om.mysql.jdbc.Driver"), MyEclipse is not going to find the string and will not look for the driver. So just copy the Mysql-connector-java-5.1.7-bin.jar to the Tomcat under the Lib directory.
In other words, the Mysql-connector-java-5.1.7-bin.jar package needs to be added in two places: 1. The Web-inf/lib directory of the project under 2.tomcat.
This method after trying to find or error, do not know why. Turned out to be my driver string is wrong!!!! I can't bear it!
String driverclass= "com.mysql.jdbc.driver"; the correct one should be string driverclass="Com.mysql.jdbc.Driver";
Unable to find class: Java.lang.ClassNotFoundException:com.mysql.jdbc.driver