Summary of the reasons why transactional doesn't work

One 、 The transaction configuration is correct , The reason why the transaction does not work ：

1. The exception is try{}catch(){} Caught , If there is an exception, it will not be rolled back .
2. Use @Transactional Notes ：
   
   • To configure ​
   • When this class is used @Transactional When the method of is called by other methods of this class that do not open transactions , Transaction will not be opened . Use @Transactional When a method of is called by another class , Start the transaction according to the normal transaction propagation behavior rules

Two 、 Under transaction sqlsession Log information

• In a transaction DefaultSqlSession The address of is the same
• 2017-01-18 13:23:07,067 DEBUG [org.mybatis.spring.SqlSessionUtils] - Creating a new SqlSession
  2017-01-18 13:23:07,068 DEBUG [org.mybatis.spring.SqlSessionUtils] - Registering transaction synchronization for SqlSession [[email protected]]
  2017-01-18 13:23:07,068 DEBUG [org.mybatis.spring.transaction.SpringManagedTransaction] - JDBC Connection [[email protected]] will be managed by Spring
  2017-01-18 13:23:07,093 DEBUG [org.mybatis.spring.SqlSessionUtils] - Releasing transactional SqlSession [[email protected]]
  2017-01-18 13:23:07,113 DEBUG [org.mybatis.spring.SqlSessionUtils] - Transaction synchronization rolling back SqlSession [[email protected]]
  2017-01-18 13:23:07,113 DEBUG [org.mybatis.spring.SqlSessionUtils] - Transaction synchronization closing SqlSession [[email protected]]