Hibernate Learning-mapping relationships

Learning record O (∩_∩) o, if you happen to pass by, I hope you can stop to see, the shortcomings of the point, I appreciate it ~

using Tools :

1, Eclipse 2, Hibernate compression Pack (hibernate_4.3.11) 3, MySQL

Ready to work: Create a project--import Hibernate.jar Package--Write Hibernate.cfg.xml Profile Connection database

Write a class to read a Hibernate.cfg.xml

One-way one-to-many (example: A department has multiple employees)

1. Build table (Employee Staff table and Dpet Department table)

①employee class

② Configuring the Employee.hbm.xml mapping file and registering it in the Hibernate.cfg.xml file (<mapping resource= "Com/sw/entity/employee.hbm.xml"/>)

③dept class

④dept.hbm.xml config file and register in Hibernate.cfg.xml file (<mapping resource= "Com/sw/entity/dept.hbm.xml"/>)

⑤, creating Table methods

2. Add Data:
First add the multi-port data, then add one end of the data, and then let the data in the multi-terminal association with one side of the data, in the database, the INSERT statement is executed first, then the UPDATE statement to modify the association relationship, inefficient

Hibernate Learning-mapping relationships