项目问题记录

1.本地编译工程，提交到远程服务其的tomcat上报这个错Unsupported major.minor version 52.0(unable to load class com.cl.business.yx.dao.AnnouncementDAO)

　　报错原因 本地编译是jdk1.8 服务器的jdk是1.7 所以冲突，把jdk改成1.7 重新编译发布，就可以了。

2.redis + Jedis + Spring报错Type 'redis/clients/jedis/JedisPoolConfig'(current frame, stack[4]) is not a

　　修改jar包：

　　jedis-2.1.0.jar + spring-data-redis-1.7.1.RELEASE.jar

　　最后决定将jedis-2.1.0.jar升级为jedis-2.9.0.jar

3.c3po死锁：com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@29165a67 -- APPARENT DEADLOCK!!! Complete Status:

　　 <property name="checkoutTimeout" value="100"/>