http://www.nexusy.com

今天看了下Hibernate的@Column注解@Column(    name="columnName";                         1    boolean unique() default false;              2    boolean nullable() default true;              3    boolean inser...

1.OneToOne共享主键import javax.persistence.CascadeType;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.Id;import javax.persistence.OneToOne;imp...

最近项目要求某些表记录数据的插入时间和更新时间：import java.util.Date;import javax.persistence.Column;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.Id;import j...

1.先定义两个model:Question和Answer，每个Question对应多个Answer;Question.javapackage lan.study.hibernate.model;import java.util.Set;import javax.persistence.CascadeType;import javax.persistence.Entity...

 @Test public void testSave(){ DomesticCat cat = new DomesticCat(); cat.setId(101); cat.setName("Hello kitty"); cat.setSex('M'); cat.setBirthday(new...

1.此处以用户和角色作为实体进行多对多映射，用@JoinTable指定中间表的名称User.java@Entitypublic class User { private Integer id; private String name; private Set<Role> roles; @Id @GeneratedVa...