mysql - 在 eclipse 中创建连接 - ClassNotFoundException : com. mysql.jdbc.Driver

Question

我没有在代码中做任何事情——我只是创建了一个 eclipse 连接，但似乎无法对它执行 ping 操作。连接属性:

jar 就在我说的地方($GLASSFISH_HOME\domains\domain1\lib\ext)，但我得到了:

java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:789)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at org.eclipse.datatools.connectivity.drivers.jdbc.JDBCConnection.createConnection(JDBCConnection.java:297)
    at org.eclipse.datatools.connectivity.DriverConnectionBase.internalCreateConnection(DriverConnectionBase.java:105)
    at org.eclipse.datatools.connectivity.DriverConnectionBase.open(DriverConnectionBase.java:54)
    at org.eclipse.datatools.connectivity.drivers.jdbc.JDBCConnection.open(JDBCConnection.java:81)
    at org.eclipse.datatools.enablement.internal.mysql.connection.JDBCMySQLConnectionFactory.createConnection(JDBCMySQLConnectionFactory.java:28)
    at org.eclipse.datatools.connectivity.internal.ConnectionFactoryProvider.createConnection(ConnectionFactoryProvider.java:83)
    at org.eclipse.datatools.connectivity.internal.ConnectionProfile.createConnection(ConnectionProfile.java:359)
    at org.eclipse.datatools.connectivity.ui.PingJob.createTestConnection(PingJob.java:76)
    at org.eclipse.datatools.connectivity.ui.PingJob.run(PingJob.java:59)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)

Answer 1

该 zip 很可能是 MySQL Connector/J 的分发 zip，该 zip 内部是带有驱动程序的 mysql-connector-java-5.1.27-bin.jar 库。所以您需要先解压缩它，然后添加 jar-library 而不是 zip。