idea生成hibernate配置文件和映射文件（或者实体类）

首先建立工程，这里我建立的是web工程，表也都建立好了
然后我们首先需要添加在工程添加hibernate模块


选择heibernate模块，之前选择了，所以这里已经好了
接下来



然后点击确定，等待生成，
生成的结果

一开始生成的是
但是这样还不行，我们有主键，因为项目选择的是用uuid，这里就要填写生成uuid的策略了
加上

    @GeneratedValue(generator = "uuid")
    @GenericGenerator(name = "uuid",strategy = "uuid")

最终的entity

package com.zhizhuo.entity;

import org.hibernate.annotations.GenericGenerator;

import javax.persistence.*;
import java.util.Objects;

@Entity
@Table(name = "AREA", schema = "WAREHOUSE")
public class AreaEntity {
    private String areaId;
    private String areaCode;
    private String areaName;
    private String depotId;

    @Id
    @GeneratedValue(generator = "uuid")
    @GenericGenerator(name = "uuid",strategy = "uuid")
    @Column(name = "AREAID")
    public String getAreaId() {
        return areaId;
    }

    public void setAreaId(String areaId) {
        this.areaId = areaId;
    }

    @Basic
    @Column(name = "AREACODE")
    public String getAreaCode() {
        return areaCode;
    }

    public void setAreaCode(String areaCode) {
        this.areaCode = areaCode;
    }

    @Basic
    @Column(name = "AREANAME")
    public String getAreaName() {
        return areaName;
    }

    public void setAreaName(String areaName) {
        this.areaName = areaName;
    }

    @Basic
    @Column(name = "DEPOTID")
    public String getDepotId() {
        return depotId;
    }

    public void setDepotId(String depotId) {
        this.depotId = depotId;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof AreaEntity)) return false;
        AreaEntity that = (AreaEntity) o;
        return Objects.equals(getAreaId(), that.getAreaId()) &&
                Objects.equals(getAreaCode(), that.getAreaCode()) &&
                Objects.equals(getAreaName(), that.getAreaName()) &&
                Objects.equals(getDepotId(), that.getDepotId());
    }

    @Override
    public int hashCode() {
        return Objects.hash(getAreaId(), getAreaCode(), getAreaName(), getDepotId());
    }

    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder("AreaEntity{");
        sb.append("areaId='").append(areaId).append('\'');
        sb.append(", areaCode='").append(areaCode).append('\'');
        sb.append(", areaName='").append(areaName).append('\'');
        sb.append(", depotId='").append(depotId).append('\'');
        sb.append('}');
        return sb.toString();
    }
}

话不多说，先测试一把，他把我们的uuid和sql语句都打印出来了，测试通过

其实生成这个已经可以了，因为我们用注解把关系都映射好了，个人感觉用xml配置文件感觉臃肿，还是用注解比较方便，看着也舒服一点，这里只是介绍了生成xml的方法，不过还是贴上代码

<?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.zhizhuo.entity.AreaEntity" table="AREA" schema="WAREHOUSE">
    	<!--后来写的主键生成策略-->
    	        <id name="areaId" column="AREAID">
            <generator class="org.hibernate.id.UUIDHexGenerator"></generator>
        </id>
        <!--工具生成的-->
          <id name="areaId" column="AREAID"/>
        <property name="areaCode" column="AREACODE"></property>
        <property name="areaName" column="AREANAME"></property>
        <property name="depotId" column="DEPOTID"></property>
    </class>
</hibernate-mapping>

好了，到此为止