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[英]How to insert the data in mysql relation table using hibernate/jpa in Spring Boot
[英]Hibernate not returning data from mysql table with spring boot
我在我的MySQL數據庫中有一個表,我試圖在我的Spring啟動控制器類中使用Hibernate訪問它。 MySQL數據庫中的表名是AdminTable
。 (我的數據庫中還有另一個表)。
我沒有從我的數據庫中獲取數據。 我究竟做錯了什么?
MainController.java
@RestController
@CrossOrigin
public class MainController {
@Autowired
@Qualifier(value = "adminService")
private AdminService adminService;
@RequestMapping(method = RequestMethod.POST, value = "/admin_login")
public String loginAdmin(@RequestBody LoginInformation loginInformation) {
System.out.println(loginInformation.getUsername() + " " + loginInformation.getPassword());
String adminFound = "false";
Iterable<Admin> admins = adminService.findAll();
for (Admin admin : admins) {
if (admin.getUsername().equals(loginInformation.getUsername()) &&
admin.getPassword().equals(loginInformation.getPassword())) {
adminFound = "true";
break;
}
}
return adminFound;
}
}
application.properties
spring.jpa.hibernate.ddl-auto=create
spring.datasource.url=jdbc:mysql://localhost:3306/payment_system
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.username=root
spring.datasource.password=myPass
AdminService.java
public interface AdminService extends CrudRepository<Admin, Long> {}
findAll
方法不返回任何數據。 請指教。
您必須將hibernate屬性配置到application.properties文件中。 你可以按照以下代碼: -
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/concretepage
spring.datasource.username=root
spring.datasource.password=
spring.datasource.tomcat.max-wait=20000
spring.datasource.tomcat.max-active=50
spring.datasource.tomcat.max-idle=20
spring.datasource.tomcat.min-idle=15
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQLDialect
spring.jpa.properties.hibernate.id.new_generator_mappings = false
spring.jpa.properties.hibernate.format_sql = true
logging.level.org.hibernate.SQL=DEBUG
logging.level.org.hibernate.type.descriptor.sql.BasicBinder=TRACE
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