Hibernate annotation 一对一 外键关联
先创建表结构:
CREATE TABLE `user_detail` ( `id` varchar(32) NOT NULL, `user_type` varchar(255) DEFAULT NULL, `first_name` varchar(10) NOT NULL, `last_name` varchar(20) NOT NULL, `email` varchar(30) NOT NULL, `id_card` varchar(18) NOT NULL, `phone` varchar(13) DEFAULT NULL, `mobile_phone` varchar(11) DEFAULT NULL, `province` varchar(32) DEFAULT NULL, `city` varchar(32) DEFAULT NULL, `zone` varchar(32) DEFAULT NULL, `address` varchar(120) DEFAULT NULL, `user_id` varchar(32) NOT NULL, `create_time` datetime NOT NULL, `last_update` datetime DEFAULT NULL, `deleted` tinyint(4) DEFAULT NULL, PRIMARY KEY (`id`), KEY `user_id` (`user_id`), CONSTRAINT `user_detail_ibfk_1` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; CREATE TABLE `users` ( `id` varchar(32) NOT NULL, `login_name` varchar(50) NOT NULL, `password` varchar(128) NOT NULL, `last_login_date` datetime DEFAULT NULL, `last_login_ip` varchar(15) DEFAULT NULL, `locked` tinyint(4) NOT NULL, `create_time` datetime NOT NULL, `last_update` datetime DEFAULT NULL, `deleted` tinyint(4) DEFAULT NULL, PRIMARY KEY (`id`), UNIQUE KEY `login_name` (`login_name`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
由于比较简单我就直接贴代码了
BaseEntity.java
package com.javaeye.sun2009.job.entity;
import java.io.Serializable;
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.MappedSuperclass;
import org.hibernate.annotations.GenericGenerator;
/**
* 统一定义id的entity基类.
*
* 基类统一定义id的属性名称、数据类型、列名映射及生成策略.
* 子类可重载getId()函数重定义id的列名映射和生成策略.
*
* @author Administrator
*/
//JPA Entity基类的标识
@MappedSuperclass
public abstract class BaseEntity implements Serializable {
@Id
@GenericGenerator(name = "hibernate-uuid", strategy = "uuid")
@GeneratedValue(generator = "hibernate-uuid")
private String id;
@Column(updatable = false)
private Date createTime = new Date();
@Column(insertable = false)
private Date lastUpdate = new Date();
private Boolean deleted = false;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public Date getCreateTime() {
return createTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
public Date getLastUpdate() {
return lastUpdate;
}
public void setLastUpdate(Date lastUpdate) {
this.lastUpdate = lastUpdate;
}
public Boolean getDeleted() {
return deleted;
}
public void setDeleted(Boolean deleted) {
this.deleted = deleted;
}
}
User.java
package com.javaeye.sun2009.job.entity.user;
import java.util.Date;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.OneToOne;
import javax.persistence.Table;
import com.javaeye.sun2009.job.entity.BaseEntity;
/**
* 用户登录表
* @author Administrator
*/
@Entity
@Table(name = "users")
public class User extends BaseEntity {
private static final long serialVersionUID = 2688258413041532400L;
/**
* 登录用户名
*/
@Column(updatable = false)
private String loginName;
/**
* 密码
*/
private String password;
/**
* 最后登录日期
*/
@Column(insertable = false)
private Date lastLoginDate;
/**
* 最后登录IP
*/
@Column(insertable = false)
private String lastLoginIp;
/**
* 账户是否被锁定
*/
private Boolean locked;
/**
* 用户详细信息
*/
@OneToOne(mappedBy = "user", cascade = CascadeType.ALL, optional = true)
private UserDetail userDetail;
public String getLoginName() {
return loginName;
}
public void setLoginName(String loginName) {
this.loginName = loginName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public Boolean getLocked() {
return locked;
}
public void setLocked(Boolean locked) {
this.locked = locked;
}
public UserDetail getUserDetail() {
return userDetail;
}
public void setUserDetail(UserDetail userDetail) {
this.userDetail = userDetail;
}
public Date getLastLoginDate() {
return lastLoginDate;
}
public void setLastLoginDate(Date lastLoginDate) {
this.lastLoginDate = lastLoginDate;
}
public String getLastLoginIp() {
return lastLoginIp;
}
public void setLastLoginIp(String lastLoginIp) {
this.lastLoginIp = lastLoginIp;
}
}
UserDetail.java
package com.javaeye.sun2009.job.entity.user;
import javax.persistence.Entity;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.JoinColumn;
import javax.persistence.OneToOne;
import com.javaeye.sun2009.job.entity.BaseEntity;
/**
* 用户详细信息表
* @author Administrator
*
*/
@Entity
public class UserDetail extends BaseEntity {
private static final long serialVersionUID = 880651093581151378L;
/**
* 用户登录信息
*/
@OneToOne
@JoinColumn(name="user_id")
private User user;
/**
* 用户类型
*/
@Enumerated(EnumType.STRING)
private UserType userType;
/**
* 姓
*/
private String firstName;
/**
* 名
*/
private String lastName;
/**
* email地址
*/
private String email;
/**
* 身份证号码
*/
private String idCard;
/**
* 固定电话
*/
private String phone;
/**
* 手机
*/
private String mobilePhone;
/**
* 省
*/
private String province;
/**
* 市
*/
private String city;
/**
* 区
*/
private String zone;
/**
* 详细地址
*/
private String address;
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getIdCard() {
return idCard;
}
public void setIdCard(String idCard) {
this.idCard = idCard;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getMobilePhone() {
return mobilePhone;
}
public void setMobilePhone(String mobilePhone) {
this.mobilePhone = mobilePhone;
}
public String getProvince() {
return province;
}
public void setProvince(String province) {
this.province = province;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getZone() {
return zone;
}
public void setZone(String zone) {
this.zone = zone;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public UserType getUserType() {
return userType;
}
public void setUserType(UserType userType) {
this.userType = userType;
}
}
之后我试了一下一对一的延时加载，在上面的代码处改了一下，如下：
/** * 用户详细信息 */ @OneToOne(mappedBy = "user", cascade = CascadeType.ALL, fetch = FetchType.LAZY, optional = true) private UserDetail userDetail;
却是不能延时加载，后来有网友说一对一不能延时加载，后来我也就放弃了，有朋友知道的请麻烦告诉我下。
有写错的地方，欢迎指正！