oracle驱动异常:java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
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jdbc配置文件:
dbc.driverClassName=oracle.jdbc.driver.OracleDriver (dbc.driverClassName=oracle.jdbc.driver.OracleDriver)
jdbc.databaseURL=jdbc:oracle:thin:@127.0.0.1:1521:my_orcl
jdbc.username=xxx
jdbc.password=xxx
访问数据库时间出现异常:
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
原因:1、没有添加驱动包,即含oracle.jdbc.driver.OracleDriver 类的包
2、包与类对应不正确
如ojdbc5.jar或ojdbc6.jar (oracle 12c版本在D:\instantclient_11_2路径下)对应类dbc.driverClassName=oracle.jdbc.driver.OracleDriver
但不含//\\ dbc.driverClassName=oracle.jdbc.driver.OracleDriver去掉driver的该类。
3、确认类添加jar包正确的方法:选中oracle.jdbc.driver.OracleDriver ,然后ctrl+shift+t进行确认。
<classpathentry kind="lib" path="WebContent/WEB-INF/lib/ojdbc5.jar"/>
另:如oracle-jdbc-10.1.0.2.0包虽有oracle.jdbc.driver.OracleDriver 类,但数据库版本不一致,会出现如下异常;故要确保驱动与数据库版本的一致性。
2014-07-20 01:46:51 WARN BasicResourcePool:1841 - com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@e8553b -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception:
java.sql.SQLException: ORA-28040: No matching authentication protocol
将jar文件拷贝到D:\dm\alpha\WebContent\WEB-INF\lib目录下,
并在.classpath中添加<classpathentry kind="lib" path="WebContent/WEB-INF/lib/ojdbc5.jar"/>,若不添加,jar包可用,但无法通过ctrl+shifit+t查看某类属于哪个jar包。
(淡定,事出必有因,也不要被问题卡死,靠)
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