Hibernate和JPA项目：无效的列名称错误

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英文:

Hibernate and JPA project : invalid column name error

问题

It seems like you're facing an issue with your Spring Boot application and SQL Server database. The error message you provided is related to an invalid column name 'ogr_id.'

Here are some suggestions to help you resolve this issue:

  1. Check Entity Class: Ensure that the entity class (Ogrenci) matches the table schema. The column names in your entity class should match the column names in your SQL Server table. In your code, you have ogrId, ogrAd, and ogrSoyad. Make sure they match the actual column names in your table.

  2. Verify Database Connection: Double-check your application.properties file to ensure that the database URL, username, and password are correct.

  3. Database Initialization: Ensure that the database is correctly initialized. It seems like you have an identity column for ogrId. Make sure that the table is created with this configuration.

  4. Case Sensitivity: SQL Server is case-insensitive by default, but it respects the case. Verify that the case of your column names in the entity class (Ogrenci) matches the case in the database.

  5. Entity Manager Configuration: Check the configuration of your EntityManager to ensure it's properly set up to connect to your SQL Server database.

  6. Table Name Case: Verify that the table name in your entity class (@Table(name="ogrenci")) matches the actual table name in the database.

  7. Dependency Versions: Ensure that the versions of your dependencies, such as Spring Boot and Hibernate, are compatible. In your pom.xml, you've mentioned Spring Boot 2.3.3.RELEASE, but newer versions might be available.

After making these checks and any necessary corrections, restart your Spring Boot application and see if the issue is resolved. If you still encounter errors, please provide more specific details about the error message you receive, and I'll try to provide further assistance.

英文:

I want to publish my data in json format on port 8080.But
I tried hard but couldn't find the error.
I hope we find a solution

I'm getting this error:

2020-09-07 01:36:12.996  INFO 9108 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2020-09-07 01:36:13.014  INFO 9108 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 18 ms
2020-09-07 01:36:13.550  WARN 9108 --- [nio-8080-exec-1] o.h.engine.jdbc.spi.SqlExceptionHelper   : SQL Error: 207, SQLState: S0001
2020-09-07 01:36:13.550 ERROR 9108 --- [nio-8080-exec-1] o.h.engine.jdbc.spi.SqlExceptionHelper   : Geçersiz sütun adı 'ogr_id'.
2020-09-07 01:36:13.591 ERROR 9108 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet] with root cause
com.microsoft.sqlserver.jdbc.SQLServerException: Geçersiz sütun adı 'ogr_id'.
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(SQLServerException.java:262) ~[mssql-jdbc-8.4.1.jre11.jar:na]
at com.microsoft.sqlserver.jdbc.SQLServerStatement.getNextResult(SQLServerStatement.java:1632) ~[mssql-jdbc-8.4.1.jre11.jar:na]
at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.doExecutePreparedStatement(SQLServerPreparedStatement.java:602) ~[mssql-jdbc-8.4.1.jre11.jar:na]
at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement$PrepStmtExecCmd.doExecute(SQLServerPreparedStatement.java:524) ~[mssql-jdbc-8.4.1.jre11.jar:na]
at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:7375) ~[mssql-jdbc-8.4.1.jre11.jar:na]
at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:3206) ~[mssql-jdbc-8.4.1.jre11.jar:na]
at com.microsoft.sqlserver.jdbc.SQLServerStatement.executeCommand(SQLServerStatement.java:247) ~[mssql-jdbc-8.4.1.jre11.jar:na]
at com.microsoft.sqlserver.jdbc.SQLServerStatement.executeStatement(SQLServerStatement.java:222) ~[mssql-jdbc-8.4.1.jre11.jar:na]
at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.executeQuery(SQLServerPreparedStatement.java:446) ~[mssql-jdbc-8.4.1.jre11.jar:na]
at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeQuery(ProxyPreparedStatement.java:52) ~[HikariCP-3.4.5.jar:na]
at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeQuery(HikariProxyPreparedStatement.java) ~[HikariCP-3.4.5.jar:na]
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:57) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.loader.Loader.getResultSet(Loader.java:2341) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:2094) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:2056) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.loader.Loader.doQuery(Loader.java:953) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:350) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.loader.Loader.doList(Loader.java:2887) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.loader.Loader.doList(Loader.java:2869) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2701) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.loader.Loader.list(Loader.java:2696) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:506) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:400) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:219) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1415) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1565) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1533) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at org.hibernate.query.Query.getResultList(Query.java:165) ~[hibernate-core-5.4.20.Final.jar:5.4.20.Final]
at com.example.hibernateAndJpa2.DataAccess.HibernateOgrenciDal.getAll(HibernateOgrenciDal.java:29) ~[classes/:na]
at com.example.hibernateAndJpa2.DataAccess.HibernateOgrenciDal$$FastClassBySpringCGLIB$$fe8bd5d9.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:771) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139) ~[spring-tx-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:367) ~[spring-tx-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:118) ~[spring-tx-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at com.example.hibernateAndJpa2.DataAccess.HibernateOgrenciDal$$EnhancerBySpringCGLIB$$ce14d711.getAll(<generated>) ~[classes/:na]
at com.example.hibernateAndJpa2.Business.OgrenciManeger.getAll(OgrenciManeger.java:27) ~[classes/:na]
at com.example.hibernateAndJpa2.Business.OgrenciManeger$$FastClassBySpringCGLIB$$2b9d4bcd.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:771) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:367) ~[spring-tx-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:118) ~[spring-tx-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at com.example.hibernateAndJpa2.Business.OgrenciManeger$$EnhancerBySpringCGLIB$$4d98916d.getAll(<generated>) ~[classes/:na]
at com.example.hibernateAndJpa2.RestApi.OgrenciController.getAll(OgrenciController.java:25) ~[classes/:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:567) ~[na:na]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:878) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:792) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:626) ~[tomcat-embed-core-9.0.37.jar:4.0.FR]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) ~[tomcat-embed-core-9.0.37.jar:4.0.FR]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na]
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.base/java.lang.Thread.run(Thread.java:830) ~[na:na]

My sql server code:

Create Table ogrenci(
ogrId int identity(1,1) Primary Key NOT NULL,
ogrAd varchar(50) NOT NULL,
ogrSoyad varchar(50) not null
)
Insert into ogrenci Values
('Serhat','Soral'),
('Mehmet','Arıkan'),
('Hüseyin','Akbulat')

My entity class:

package com.example.hibernateAndJpa2.Entities;
import javax.persistence.*;
@Entity
@Table(name="ogrenci")
public class Ogrenci {
@Id
@Column(name="ogrId")
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int ogrId;
@Column(name="ogrAd")
private String ogrAd;
@Column(name="ogrSoyad")
private String ogrSoyad;
public Ogrenci() {
}
public Ogrenci(int ogrId, String ogrAd, String ogrSoyad) {
super();
this.ogrId = ogrId;
this.ogrAd = ogrAd;
this.ogrSoyad = ogrSoyad;
}
public int getOgrId() {
return ogrId;
}
public void setOgrId(int ogrId) {
this.ogrId = ogrId;
}
public String getOgrAd() {
return ogrAd;
}
public void setOgrAd(String ogrAd) {
this.ogrAd = ogrAd;
}
public String getOgrSoyad() {
return ogrSoyad;
}
public void setOgrSoyad(String ogrSoyad) {
this.ogrSoyad = ogrSoyad;
}
}

Data Access Package:

package com.example.hibernateAndJpa2.DataAccess;
import com.example.hibernateAndJpa2.Entities.Ogrenci;
import java.util.List;
public interface IOgrenciDal {
public List<Ogrenci> getAll();
}

package com.example.hibernateAndJpa2.DataAccess;
import java.util.List;
import javax.persistence.EntityManager;
import org.hibernate.Session;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
import com.example.hibernateAndJpa2.Entities.Ogrenci;
@Repository
public class HibernateOgrenciDal implements IOgrenciDal {
private EntityManager entityManeger;
@Autowired
public HibernateOgrenciDal(EntityManager entityManeger) {
this.entityManeger = entityManeger;
}
@Override
@Transactional
public List<Ogrenci> getAll() {
Session session=entityManeger.unwrap(Session.class);
List<Ogrenci> ogrenciler=session.createQuery("from Ogrenci",Ogrenci.class).getResultList();
return ogrenciler;
}
}

Business Package:

package com.example.hibernateAndJpa2.Business;
import java.util.List;
import com.example.hibernateAndJpa2.Entities.Ogrenci;
public interface IOgrenciService {
List<Ogrenci> getAll();
}

package com.example.hibernateAndJpa2.Business;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.example.hibernateAndJpa2.DataAccess.IOgrenciDal;
import com.example.hibernateAndJpa2.Entities.Ogrenci;
@Service
public class OgrenciManeger implements IOgrenciService {
private IOgrenciDal ogrenciDal;
@Autowired
public OgrenciManeger(IOgrenciDal ogrenciDal) {
this.ogrenciDal = ogrenciDal;
}
@Override
@Transactional
public List<Ogrenci> getAll() {
return this.ogrenciDal.getAll();
}
}

And Controller Class:

package com.example.hibernateAndJpa2.RestApi;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import com.example.hibernateAndJpa2.Business.IOgrenciService;
import com.example.hibernateAndJpa2.Entities.Ogrenci;
@RestController
public class OgrenciController {
private IOgrenciService ogrenciService;
@Autowired
public OgrenciController(IOgrenciService ogrenciService) {
this.ogrenciService = ogrenciService;
}
@GetMapping("/")
public List<Ogrenci> getAll(){
return ogrenciService.getAll();
}	
}

Finally, application.properties and pom.xml:

spring.datasource.url=jdbc:sqlserver://localhost:1433;databaseName=JavaCalisma1
spring.datasource.username=serhat
spring.datasource.password=serhat

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>hibernateAndJpa2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>hibernateAndJpa2</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>13</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/com.microsoft.sqlserver/mssql-jdbc -->
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>mssql-jdbc</artifactId>
<version>8.4.1.jre11</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

I'm waiting for your help Hibernate和JPA项目：无效的列名称错误

答案1

得分: 3

默认情况下，持久化配置会将驼峰式命名映射为下划线命名。
要解决这个问题，您可以使用以下内容替换字段名称策略：

spring.jpa.hibernate.naming.implicit-strategy
spring.jpa.hibernate.naming.physical-strategy

您可以在这里找到解释：https://www.baeldung.com/hibernate-field-naming-spring-boot

或者，您可以将列重命名为"ogrid"。这将需要修改脚本以创建表格和列注释中的名称。

英文:

By default, your persistence configuration is mapping camelcase to underscore.
To fix that you can replace the field name strategy with:

spring.jpa.hibernate.naming.implicit-strategy
spring.jpa.hibernate.naming.physical-strategy

You have an explanation here: https://www.baeldung.com/hibernate-field-naming-spring-boot

Or you could just rename to column to ogrid. It will imply to amend the script to create the table and the name in the column annotation.

huangapple
  • 本文由 发表于 2020年9月7日 07:35:49
  • 转载请务必保留本文链接：https://go.coder-hub.com/63769794.html
  • hibernate
  • java
  • jpa
  • spring-boot
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