java.sql.SQLException: Connection is read-only. Queries leading to data modification are not allowed
原因是：我在service层设置了只读。@Transactional(readOnly = true)
而更新的方法没有把可读设置为FALSE。解决办法是在方法上加上readOnly=FALSE
注解如下： @Transactional(readOnly = false, isolation = Isolation.DEFAULT, propagation = Propagation.REQUIRED)
原文：http://blog.csdn.net/bendanban/article/details/20529457