idea springboot jpa从数据库表生成实体类 - 好文

###问题引入
最近有个springboot的项目，使用了jpa，表已创建好，需要创建对应实体类，幸运的是idea本来就支持。
idea 有个Tool window 叫作Persistence，可以将数据库表生成实体类：

###如何使用
要使用Persistence窗口需要：

package net.toocruel.iqismart.entity; import javax.persistence.*; import
java.sql.Timestamp; import java.util.Objects; /** * @Description * @Auther sty
* @createTime 2018/5/8 上午10:51 */ @Entity @Table(name = "ask_questions", schema
= "tipask", catalog = "") public class AskQuestionsEntity { private int id;
private int userId; private int categoryId; private String title; private
String description; private short price; private byte hide; private int
answers; private int views; private int followers; private int collections;
private int comments; private byte device; private byte status; private
Timestamp createdAt; private Timestamp updatedAt; @Id @Column(name = "id")
public int getId() { return id; } public void setId(int id) { this.id = id; }
@Basic @Column(name = "user_id") public int getUserId() { return userId; }
public void setUserId(int userId) { this.userId = userId; } @Basic @Column(name
= "category_id") public int getCategoryId() { return categoryId; } public void
setCategoryId(int categoryId) { this.categoryId = categoryId; } @Basic
@Column(name = "title") public String getTitle() { return title; } public void
setTitle(String title) { this.title = title; } @Basic @Column(name =
"description") public String getDescription() { return description; } public
void setDescription(String description) { this.description = description; }
@Basic @Column(name = "price") public short getPrice() { return price; } public
void setPrice(short price) { this.price = price; } @Basic @Column(name =
"hide") public byte getHide() { return hide; } public void setHide(byte hide) {
this.hide = hide; } @Basic @Column(name = "answers") public int getAnswers() {
return answers; } public void setAnswers(int answers) { this.answers = answers;
} @Basic @Column(name = "views") public int getViews() { return views; } public
void setViews(int views) { this.views = views; } @Basic @Column(name =
"followers") public int getFollowers() { return followers; } public void
setFollowers(int followers) { this.followers = followers; } @Basic @Column(name
= "collections") public int getCollections() { return collections; } public
void setCollections(int collections) { this.collections = collections; } @Basic
@Column(name = "comments") public int getComments() { return comments; } public
void setComments(int comments) { this.comments = comments; } @Basic
@Column(name = "device") public byte getDevice() { return device; } public void
setDevice(byte device) { this.device = device; } @Basic @Column(name =
"status") public byte getStatus() { return status; } public void setStatus(byte
status) { this.status = status; } @Basic @Column(name = "created_at") public
Timestamp getCreatedAt() { return createdAt; } public void
setCreatedAt(Timestamp createdAt) { this.createdAt = createdAt; } @Basic
@Column(name = "updated_at") public Timestamp getUpdatedAt() { return
updatedAt; } public void setUpdatedAt(Timestamp updatedAt) { this.updatedAt =
updatedAt; } @Override public boolean equals(Object o) { if (this == o) return
true; if (o == null || getClass() != o.getClass()) return false;
AskQuestionsEntity that = (AskQuestionsEntity) o; return id == that.id &&
userId == that.userId && categoryId == that.categoryId && price == that.price
&& hide == that.hide && answers == that.answers && views == that.views &&
followers == that.followers && collections == that.collections && comments ==
that.comments && device == that.device && status == that.status &&
Objects.equals(title, that.title) && Objects.equals(description,
that.description) && Objects.equals(createdAt, that.createdAt) &&
Objects.equals(updatedAt, that.updatedAt); } @Override public int hashCode() {
return Objects.hash(id, userId, categoryId, title, description, price, hide,
answers, views, followers, collections, comments, device, status, createdAt,
updatedAt); } }

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