diao21的博客

[code="java"] package com.bjsxt.hibernate; public class Group { private int id; private String name; public int getId() { return id; } public void setId(int id) { this.id = id; ...

[code="java"] package com.bjsxt.hibernate; import java.util.HashSet; import java.util.Set; public class Group { private int id; private String name; private Set users = new HashSet(); ...

[code="java"] package com.bjsxt.hibernate; import java.util.HashSet; import java.util.Set; public class Customer { private int id; private String name; private Set orders = new HashSet...

这是一个hibernate 多对一 一对多 基于外键双向关联 package com.bit.hibernate; import java.util.HashSet; import java.util.Set; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import ...

package com.bit.hibernate; import java.util.HashSet; import java.util.Set; import javax.persistence.CascadeType; import javax.persistence.Entity; import javax.persistence.GeneratedValue; imp...

还是group和user的one to many many to one双向关联 session.beginTransaction(); User u = (User)session.get(User.class, 1); session.getTransaction().commit(); System.out.println(u.getG...

还是那个例子 package com.bit.hibernate; import javax.persistence.CascadeType; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; import javax....

1.get()采用立即加载方式,而load()采用延迟加载; get()方法执行的时候,会立即向数据库发出查询语句, 而load()方法返回的是一个代理(此代理中只有一个id属性),只有等真正使用该对象属性的时候,才会发出sql语句 2.如果数据库中没有对应的记录,get()方法返回的是null.而load...

hibernate delete