摘要：myeclipse中jpa的安装以及jpa reverse engining 安装 右击 Configure Facets, Install JPA jpa reverse engining 1.db browser中建张表 2.选中表右键 jpa reversing engining,选个空包，f 阅读全文

摘要：myeclipse显示db brower 这东西怎么调出来? windows show view other db borwser 阅读全文

摘要：jpa报错 Unable to acquire a connection from driver [null], user [null] and URL [null] 为啥报错 因为你在persistence.xml中没配置你数据库的相应信息 咋解决 persistence.xml在哪里? 咋编辑这 阅读全文