见：http://www.aichengxu.com/diannao/83836.htm

maven/Java/web/bootstrapQQ群：566862629。希望更多人一起帮助我学习。

如果一个jdbc的jar包你不知道是那个版本的,可以解压这个jar包,再Meta-INF\MANIFEST.MF 文件中找文件内容如下.

Manifest-Version: 1.0
Ant-Version: Apache Ant 1.6.5

Created-By: 1.5.0_51-b10 (Sun Microsystems Inc.)
Implementation-Vendor: Oracle Corporation

Implementation-Title: JDBC
Implementation-Version: 11.2.0.4.0

Repository-Id: JAVAVM_11.2.0.4.0_LINUX.X64_RELEASE
Specification-Vendor: Sun Microsystems Inc.

Specification-Title: JDBC
Specification-Version: 4.0

Main-Class: oracle.jdbc.OracleDriver
sealed: true

Name: oracle/sql/converter/
Sealed: false

Name: oracle/sql/
Sealed: false
Name: oracle/sql/converter_xcharset/

Sealed: false
Name: oracle/replay/driver/

Sealed: false