idea 从数据库快速生成Spring Data JPA实体类

- 日理万妓 2022-06-04 02:53 473阅读 0赞

# idea 从数据库快速生成Spring Data JPA实体类 #

## 第一步,调出 Persistence 窗口. ##

File—>Project Structure—>model—> + —>JPA

![2.png][]

## 第二步:打开 Persistence窗口 ##

![3.png][]

## 配置 生成实体类的参数 ##

![4.png][]

如图:

*  1.数据源,即链接数据库的信息,按要求填写数据库信息即可
 *  2.生成实体类的位置.
 *  3.实体类名称前缀.这里我什么都没写.
 *  4.实体类名称后缀. 这里我写Entity. 比如数据库表名为 user,那么生成实体类为 UserEntity
 *  5.选择哪些表的哪些字段生成实体类.这里我全选.
 *  6.生成的实体类自动添加 JPA注解.

## 最后点击ok,就能在我们的项目下看到生成的实体类 ##

![Image 1][]

如:

package com.itguang.weixinsell.entity;
    
    import javax.persistence.Basic;
    import javax.persistence.Column;
    import javax.persistence.Entity;
    import javax.persistence.Id;
    import javax.persistence.Table;
    import java.sql.Timestamp;
    
    /** * @author itguang * @create 2017-11-25 14:02 **/
    @Entity
    @Table(name = "product_category", schema = "sell", catalog = "")
    public class ProductCategoryEntity { 
        private int categoryId;
        private String categoryName;
        private int categoryType;
        private Timestamp createTime;
        private Timestamp updateTime;
    
        @Id
        @Column(name = "category_id")
        public int getCategoryId() {
            return categoryId;
        }
    
        public void setCategoryId(int categoryId) {
            this.categoryId = categoryId;
        }
    
        @Basic
        @Column(name = "category_name")
        public String getCategoryName() {
            return categoryName;
        }
    
        public void setCategoryName(String categoryName) {
            this.categoryName = categoryName;
        }
    
        @Basic
        @Column(name = "category_type")
        public int getCategoryType() {
            return categoryType;
        }
    
        public void setCategoryType(int categoryType) {
            this.categoryType = categoryType;
        }
    
        @Basic
        @Column(name = "create_time")
        public Timestamp getCreateTime() {
            return createTime;
        }
    
        public void setCreateTime(Timestamp createTime) {
            this.createTime = createTime;
        }
    
        @Basic
        @Column(name = "update_time")
        public Timestamp getUpdateTime() {
            return updateTime;
        }
    
        public void setUpdateTime(Timestamp updateTime) {
            this.updateTime = updateTime;
        }
    
        @Override
        public boolean equals(Object o) {
            if (this == o) return true;
            if (o == null || getClass() != o.getClass()) return false;
    
            ProductCategoryEntity that = (ProductCategoryEntity) o;
    
            if (categoryId != that.categoryId) return false;
            if (categoryType != that.categoryType) return false;
            if (categoryName != null ? !categoryName.equals(that.categoryName) : that.categoryName != null) return false;
            if (createTime != null ? !createTime.equals(that.createTime) : that.createTime != null) return false;
            if (updateTime != null ? !updateTime.equals(that.updateTime) : that.updateTime != null) return false;
    
            return true;
        }
    
        @Override
        public int hashCode() {
            int result = categoryId;
            result = 31 * result + (categoryName != null ? categoryName.hashCode() : 0);
            result = 31 * result + categoryType;
            result = 31 * result + (createTime != null ? createTime.hashCode() : 0);
            result = 31 * result + (updateTime != null ? updateTime.hashCode() : 0);
            return result;
        }
    }

[2.png]: https://github.com/itguang/weixin_sell/raw/master/weixin_sell/images/2.png
[3.png]: https://github.com/itguang/weixin_sell/raw/master/weixin_sell/images/3.png
[4.png]: https://github.com/itguang/weixin_sell/raw/master/weixin_sell/images/4.png
[Image 1]: