Shulou(Shulou.com)06/03 Report--

This article will explain in detail how to automatically generate Hibernate mapping files and entity classes under IntelliJIDEA. The editor thinks it is very practical, so I share it with you for reference. I hope you can get something after reading this article.

1. Build the project and add the project structure configuration and configure the initial parameters

1.1. Set up the basic shelf as shown in the picture

Click File, and click Project Structure from the pop-up menu

Click Modules on the left, click the "+" sign, and then select Hibernate from the pop-up menu

1.4. at this point, there is an extra Hibernate in the project, click Hibernate, then click the "+" sign, and select hibernate.hbm.xml

1.5.Select the Hibernate version in the pop-up window, and then click OK

1.6.After clicking OK, the Apply in the original 1.4step window is applied to the project by pressing the girl.

1.7. at this time, there is an extra configuration file named hibernate.hbm.xml in the project shelf.

1.8.Configuring the following configurations in hibernate.hbm.xml

Jdbc:mysql://localhost:3306/SSHBlog?useUnicode=true&characterEncoding=utf8&useSSL=true&zeroDateTimeBehavior=convertToNull com.mysql.jdbc.Driver root

1.9. The first step is complete.

2. Configure the database

2.1. Click the button in the lower left corner to make the window style as shown in the figure

2.2. Select a database

2.4. Test whether the connection is successful after configuring the database. If it is successful, click OK.

2.5. The database is as follows

3. Generate the entity class and configuration file of Hibernate

Click Persistence in the window

Right-click the project in Persistence, then click Generate Persistence Mapping, and select By Database Schema

Select the data source, configure the entity class package, select the entity class to be generated (the date type can only be manually modified to java.util.Date), and then click OK

3.4. After waiting for a period of time, it is found that the entity classes and configuration files in the project have been automatically generated.

3.5. the generated entity class and configuration file are as follows; entity class: 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 (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;}}

Configuration file: Contacts.hbm.xml

4. Benefits of using IntelliJ IDEA to generate entity classes

The advantage of using Hibernate of IntelliJ IDEA to generate entity classes is to facilitate coding and improve coding efficiency.

Compared to Eclipse, IntelliJ IDEA comes with a mechanism for Hibernate generation, while Eclipse requires downloading plug-ins.

On "how to automatically generate Hibernate mapping files and entity classes under IntelliJIDEA" this article is shared here, I hope the above content can be of some help to you, so that you can learn more knowledge, if you think the article is good, please share it out for more people to see.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.