fmc库中没有了外键 com.mysql.jdbc.exceptions.jdbc4.MySQLTransactionRollbackException: Deadlock found when trying to get lock; try restarting transaction at sun.reflect.GeneratedConstructorAccessor177.newInstance(Unknown Source) [na:na] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) [na:1.8.0_171] at java.lang.reflect.Constructor.newInstance(Constructor.java:423) [na:1.8.0_171] at com.mysql.jdbc.Util.handleNewInstance(Util.java:389) [mysql-...