The case of transaction failure in spring

See: https://www.cnblogs.com/heqiyoujing/p/11221093.html     Nested method call transaction fails, caused by this

 

https://my.oschina.net/u/2277088/blog/3142507    supplement

 

https://blog.csdn.net/Muscleheng/article/details/81365929    Problems with nested method calls, assisted viewing fuzzy  

 

https://blog.csdn.net/lilamei170607/article/details/104062829        Common transaction failure

 

https://blog.csdn.net/andybbc/article/details/52913525      Common transaction failure