我安装了eclipse和mysql, 首先两个都能用，我现在想用eclipse和mysql连接，可是为啥总是连接不成功呢 我已经下载了mysql-connector-java-5.1.5-bin.jar，然后在classpath那里添加了， ...

Community driven content discussing all aspects of software development from DevOps to design patterns. As developers migrate their old Java Persistence API applications to JPA 3, their progress is ...