|  |  | 
 |  |  |             if (entity instanceof BaseEntity) { | 
 |  |  |                 //Class<? extends Object> entityClass = entity.getClass(); | 
 |  |  |                 Class<?> entityClass = entity.getClass(); | 
 |  |  |                 Method setMt = entityClass.getMethod(BASE_FIELD_SET_PRIMARY_KEY_FUNTION_NAME, Long.class) ; | 
 |  |  |                 setMt.invoke(entity, new IDLongGenerator().generate()); | 
 |  |  |                 Method setMt = null ; | 
 |  |  |                 try{ | 
 |  |  |                     //有一些实体没有id,例如中间表 | 
 |  |  |                     setMt = entityClass.getMethod(BASE_FIELD_SET_PRIMARY_KEY_FUNTION_NAME, Long.class) ; | 
 |  |  |                 }catch (Exception e){ | 
 |  |  |                     //当entityClass没有setId方法时,会抛出异常 | 
 |  |  |                 } | 
 |  |  |                 if(setMt != null){ | 
 |  |  |                     setMt.invoke(entity, new IDLongGenerator().generate()); | 
 |  |  |                 } | 
 |  |  |  | 
 |  |  |                 invocation.getArgs()[PARAMETER_INDEX] = entity; | 
 |  |  |             } | 
 |  |  |         } |