Spring ORM - 测试 EclipseLink

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现在在 eclipse 中，在 MainApp.java 上单击右键，选择 Run As 上下文菜单，然后选择 Java Application。检查 eclipse 中的控制台日志。你可以看到以下日志 -

...
Sep 28, 2021 8:56:13 AM org.springframework.orm.jpa.LocalEntityManagerFactoryBean createNativeEntityManagerFactory
INFO: Building JPA EntityManagerFactory for persistence unit 'EclipseLink_JPA'
[EL Config]: metadata: 2021-09-28 08:56:13.763--ServerSession(712627377)--Thread(Thread[main,5,main])--The access type for the persistent class [class com.tutorialspoint.jpa.entity.Employee] is set to [FIELD].
[EL Config]: metadata: 2021-09-28 08:56:13.787--ServerSession(712627377)--Thread(Thread[main,5,main])--The alias name for the entity class [class com.tutorialspoint.jpa.entity.Employee] is being defaulted to: Employee.
[EL Config]: metadata: 2021-09-28 08:56:13.802--ServerSession(712627377)--Thread(Thread[main,5,main])--The column name for element [id] is being defaulted to: ID.
Sep 28, 2021 8:56:13 AM org.springframework.orm.jpa.LocalEntityManagerFactoryBean buildNativeEntityManagerFactory
INFO: Initialized JPA EntityManagerFactory for persistence unit 'EclipseLink_JPA'
[EL Info]: 2021-09-28 08:56:14.102--ServerSession(712627377)--Thread(Thread[main,5,main])--EclipseLink, version: Eclipse Persistence Services - 2.5.1.v20130918-f2b9fc5
[EL Fine]: connection: 2021-09-28 08:56:14.403--Thread(Thread[main,5,main])--Detected database platform: org.eclipse.persistence.platform.database.MySQLPlatform
[EL Config]: connection: 2021-09-28 08:56:14.423--ServerSession(712627377)--Connection(741883443)--Thread(Thread[main,5,main])--connecting(DatabaseLogin(
   platform=>MySQLPlatform
   user name=> "root"
   datasource URL=> "jdbc:mysql://127.0.0.1:3306/tutorialspoint?useSSL=false"
))
[EL Config]: connection: 2021-09-28 08:56:14.469--ServerSession(712627377)--Connection(2134915053)--Thread(Thread[main,5,main])--Connected: jdbc:mysql://127.0.0.1:3306/tutorialspoint?useSSL=false
   User: root@localhost
   Database: MySQL  Version: 8.0.23
   Driver: MySQL Connector/J  Version: mysql-connector-java-8.0.13 (Revision: 66459e9d39c8fd09767992bc592acd2053279be6)
[EL Info]: connection: 2021-09-28 08:56:14.539--ServerSession(712627377)--Thread(Thread[main,5,main])--file:/F:/Workspace/springorm/target/classes/_EclipseLink_JPA login successful
[EL Fine]: sql: 2021-09-28 08:56:14.602--ServerSession(712627377)--Connection(2134915053)--Thread(Thread[main,5,main])--CREATE TABLE Employees (ID INTEGER AUTO_INCREMENT NOT NULL, DESIGNATION VARCHAR(255), NAME VARCHAR(255), SALARY DOUBLE, PRIMARY KEY (ID))
[EL Fine]: sql: 2021-09-28 08:56:14.836--ClientSession(181326224)--Connection(2134915053)--Thread(Thread[main,5,main])--INSERT INTO Employees (DESIGNATION, NAME, SALARY) VALUES (?, ?, ?)
   bind => [Technical Manager, Julie, 10000.0]
[EL Fine]: sql: 2021-09-28 08:56:14.855--ClientSession(181326224)--Connection(2134915053)--Thread(Thread[main,5,main])--SELECT LAST_INSERT_ID()
[EL Fine]: sql: 2021-09-28 08:56:14.883--ClientSession(1573125303)--Connection(2134915053)--Thread(Thread[main,5,main])--INSERT INTO Employees (DESIGNATION, NAME, SALARY) VALUES (?, ?, ?)
   bind => [Senior Manager, Robert, 20000.0]
[EL Fine]: sql: 2021-09-28 08:56:14.885--ClientSession(1573125303)--Connection(2134915053)--Thread(Thread[main,5,main])--SELECT LAST_INSERT_ID()
[EL Fine]: sql: 2021-09-28 08:56:14.893--ClientSession(2054787417)--Connection(2134915053)--Thread(Thread[main,5,main])--INSERT INTO Employees (DESIGNATION, NAME, SALARY) VALUES (?, ?, ?)
   bind => [Software Engineer, Anil, 5000.0]
[EL Fine]: sql: 2021-09-28 08:56:14.896--ClientSession(2054787417)--Connection(2134915053)--Thread(Thread[main,5,main])--SELECT LAST_INSERT_ID()
[EL Fine]: sql: 2021-09-28 08:56:14.929--ServerSession(712627377)--Connection(2134915053)--Thread(Thread[main,5,main])--SELECT ID, DESIGNATION, NAME, SALARY FROM Employees
Id   : 1
Name : Julie
Salary = 10000.0
Designation = Technical Manager

Id   : 2
Name : Robert
Salary = 20000.0
Designation = Senior Manager

Id   : 3
Name : Anil
Salary = 5000.0
Designation = Software Engineer

Sep 28, 2021 8:56:14 AM org.springframework.context.annotation.AnnotationConfigApplicationContext doClose
INFO: Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@5383967b: startup date [Tue Sep 28 08:56:12 IST 2021]; root of context hierarchy
[EL Config]: connection: 2021-09-28 08:56:14.935--ServerSession(712627377)--Connection(2134915053)--Thread(Thread[main,5,main])--disconnect
Sep 28, 2021 8:56:14 AM org.springframework.orm.jpa.LocalEntityManagerFactoryBean destroy
INFO: Closing JPA EntityManagerFactory for persistence unit 'EclipseLink_JPA'
[EL Info]: connection: 2021-09-28 08:56:14.936--ServerSession(712627377)--Thread(Thread[main,5,main])--file:/F:/Workspace/springorm/target/classes/_EclipseLink_JPA logout successful
[EL Config]: connection: 2021-09-28 08:56:14.936--ServerSession(712627377)--Connection(741883443)--Thread(Thread[main,5,main])--disconnect

在此使用 Spring 配置构建并运行项目。创建一个 Employee 表，并含有三条记录。你可以使用 MySQL 控制台验证这一点。

Enter password: ********
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 41
Server version: 8.0.23 MySQL Community Server - GPL

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Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> use tutorialspoint;
Database changed
mysql> select * from employees;
+----+-------------------+--------+--------+
| id | DESIGNATION       | NAME   | SALARY |
+----+-------------------+--------+--------+
|  1 | Technical Manager | Julie  |  10000 |
|  2 | Senior Manager    | Robert |  20000 |
|  3 | Software Engineer | Anil   |   5000 |
+----+-------------------+--------+--------+
3 rows in set (0.00 sec)

mysql>
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