IntelliJ IDEA下自动生成Hibernate映射文件以及实体类
更新:HHH   时间:2023-1-8


1、构建项目并添加项目结构配置以及配置初始参数

1.1、如图将基本的架子搭建好


1.2、点击File,弹出的菜单中点击Project Structure;

1.3、点击左侧的Modules,再点击“+”号,再在弹出的菜单中选择Hibernate;


1.4、在这时,项目中多出了一个Hibernate,点击Hibernate,再点击“+”号,选择hibernate.hbm.xml;


1.5、弹出的窗口中选择Hibernate的版本,然后点击OK;


1.6、点击OK后在原来1.4步骤的窗口中的Apply按妞应用到项目;

1.7、这时项目架子中多出了一个名为hibernate.hbm.xml的配置文件;


1.8、在hibernate.hbm.xml中配置如下配置;

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
  "-//Hibernate/Hibernate Configuration DTD//EN"
  "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
 <session-factory>
  <!--数据库连接url配置-->
  <property name="connection.url">jdbc:mysql://localhost:3306/SSHBlog?useUnicode=true&characterEncoding=utf8&useSSL=true&zeroDateTimeBehavior=convertToNull</property>
  <!--数据库驱动配置-->
  <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
  <!--数据库用户名配置-->
  <property name="connection.username">root</property>
  <!--数据库密码配置-->
  <property name="connection.password"></property>
 
  <!-- DB schema will be updated if needed -->
  <!-- <property name="hbm2ddl.auto">update</property> -->
 </session-factory>
</hibernate-configuration>

1.9、第一步配置完毕。

2、配置数据库

2.1、点击左下角按钮,使窗口样式如图所示;


2.2、选择数据库;


2.4、配置数据库后测试连接是否成功,若成功后点击确定;


2.5、数据库如下;


3、生成Hibernate的实体类以及配置文件

3.1、点击窗口中的Persistence;


3.2、在Persistence中右键项目,然后点击Generate Persistence Mapping,选择By Database Schema;


3.3、选择数据源,配置实体类包,选择要生成的实体类(其中日期类型的只能手动修改为java.util.Date),然后点击OK;


3.4、等待一段时间之后,发现项目中的实体类以及配置文件已经自动生成。


3.5、生成的实体类以及配置文件如下所示;实体类:Contacts.java

package com.sshblog.entity;
 
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 
import javax.persistence.*;
import java.util.Date;
 
@Entity
@Table(name = "contacts")
@JsonIgnoreProperties(value = {"hibernateLazyInitializer","handler","operations","roles","menus"})
public class Contacts {
  private int id;
  private String name;
  private String address;
  private String gender;
  private Date dob;
  private String email;
  private Long mobile;
 
  @Id
  @Column(name = "id")
  public int getId() {
    return id;
  }
 
  public void setId(int id) {
    this.id = id;
  }
 
  @Basic
  @Column(name = "name")
  public String getName() {
    return name;
  }
 
  public void setName(String name) {
    this.name = name;
  }
 
  @Basic
  @Column(name = "address")
  public String getAddress() {
    return address;
  }
 
  public void setAddress(String address) {
    this.address = address;
  }
 
  @Basic
  @Column(name = "gender")
  public String getGender() {
    return gender;
  }
 
  public void setGender(String gender) {
    this.gender = gender;
  }
 
  @Basic
  @Column(name = "dob")
  public Date getDob() {
    return dob;
  }
 
  public void setDob(Date dob) {
    this.dob = dob;
  }
 
  @Basic
  @Column(name = "email")
  public String getEmail() {
    return email;
  }
 
  public void setEmail(String email) {
    this.email = email;
  }
 
  @Basic
  @Column(name = "mobile")
  public Long getMobile() {
    return mobile;
  }
 
  public void setMobile(Long mobile) {
    this.mobile = mobile;
  }
 
  @Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
 
    Contacts contacts = (Contacts) o;
 
    if (id != contacts.id) return false;
    if (name != null ? !name.equals(contacts.name) : contacts.name != null) return false;
    if (address != null ? !address.equals(contacts.address) : contacts.address != null) return false;
    if (gender != null ? !gender.equals(contacts.gender) : contacts.gender != null) return false;
    if (dob != null ? !dob.equals(contacts.dob) : contacts.dob != null) return false;
    if (email != null ? !email.equals(contacts.email) : contacts.email != null) return false;
    if (mobile != null ? !mobile.equals(contacts.mobile) : contacts.mobile != null) return false;
 
    return true;
  }
 
  @Override
  public int hashCode() {
    int result = id;
    result = 31 * result + (name != null ? name.hashCode() : 0);
    result = 31 * result + (address != null ? address.hashCode() : 0);
    result = 31 * result + (gender != null ? gender.hashCode() : 0);
    result = 31 * result + (dob != null ? dob.hashCode() : 0);
    result = 31 * result + (email != null ? email.hashCode() : 0);
    result = 31 * result + (mobile != null ? mobile.hashCode() : 0);
    return result;
  }
}

配置文件:Contacts.hbm.xml

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-mapping PUBLIC
  "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
  "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
 
  <class name="com.sshblog.entity.Contacts" table="contacts" schema="SSHBlog">
    <id name="id" column="id"/>
    <property name="name" column="name"/>
    <property name="address" column="address"/>
    <property name="gender" column="gender"/>
    <property name="dob" column="dob"/>
    <property name="email" column="email"/>
    <property name="mobile" column="mobile"/>
  </class>
</hibernate-mapping>

4、使用IntelliJ IDEA生成实体类的好处

使用IntelliJ IDEA的Hibernate生成实体类的好处是方便编码,提升编码效率;

相比较Eclipse而言,IntelliJ IDEA自带Hibernate生成的机制,而Eclipse则需要下载插件。

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持天达云。

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