ZYJL的博客

1.Dao 方法 /** * 立即（饿汉）加载方法（性能低） * @param sid * @return */ public Student get(Integer sid) { Session session = SessionFactoryUtil.getSession(); //获取session会话 Transaction transaction = se...

用来测试你的hibernate.cfg.xml配置文件是否配置正确 package com.zy.two.util; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; /** *,1，用来生产session会话 * 2，用来测试...

1.entity package com.zy.three.entity; import java.util.HashSet; import java.util.Set; public class Order { // order_id int primary key auto_increment, // order_no varchar(50) not null private I...

1.entity package com.zy.four.entity; import java.util.HashSet; import java.util.Set; public class TreeNode { // tree_node_id int primary key auto_increment, ...

1.entity package com.zy.four.entity; import java.util.HashSet; import java.util.Set; public class Book { // book_id int primary key auto_increment, // book_name varchar(50) not null, // price floa...