通過將 InMemory 更改為 Spring Data JPA / Mysql 來分離實體
[英]Detached Entity by changing InMemory to Spring Data JPA / Mysql
問題描述
我正在嘗試使用 Spring Data JPA 將數據庫從 InMemory 更改為 MySQL。 但我失敗了。 在我嘗試了不同的東西之后，比如用於級聯的注釋等等，這些想法都沒有了。
但這是我的問題應用程序：
我的存儲庫：
package org.apache.struts.crud.dao;
import org.apache.struts.crud.model.Country;
import org.apache.struts.crud.model.Person;
import org.apache.struts.crud.service.PersonService;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
@Repository
public class PersonRepository implements PersonService {
@PersistenceContext
EntityManager manager;
@Override
public Person getPerson(Integer id) {
return manager.find(Person.class, id );
}
@Override
public Person[] getAllPersons() {
return new Person[0];
}
@Override
public void updatePerson(Person personBean) {
}
@Override
@Transactional
public void insertPerson(Person personBean) {
manager.persist(personBean);
}
@Override
public void deletePerson(Integer id) {
}
@Override
public Country[] getCountries() {
return new Country[0];
}
@Override
public String[] getCarModels() {
return new String[0];
}
@Override
public String[] getSports() {
return new String[0];
}
@Override
public String[] getGenders() {
return new String[0];
}
}
人物對象：
package org.apache.struts.crud.model;
import javax.persistence.*;
import java.util.Arrays;
/**
* Models a Person who registers.
*
* Person is Cloneable just an implemention technique for in-memory daos.
*
* @author bruce phillips
* @author antonio sanchez
*/
@Entity
@Table(name = "person")
public class Person implements Cloneable {
@Id
@GeneratedValue(strategy= GenerationType.AUTO)
private Integer personId;
private String firstName;
private String lastName;
private String sport;
private String gender;
// private Country country = new Country("", "");
private boolean over21;
private String[] carModels;
private String email;
private String phoneNumber;
public Person() {
}
public Person(Integer id, String firstName, String lastName, String sport,
String gender, /*Country country,*/ boolean over21, String[] carModels,
String email, String phoneNumber) {
this.personId = id;
this.firstName = firstName;
this.lastName = lastName;
this.sport = sport;
this.gender = gender;
//this.country = country;
this.over21 = over21;
this.carModels = carModels;
this.email = email;
this.phoneNumber = phoneNumber;
}
public Integer getPersonId() {
return personId;
}
public void setPersonId(Integer personId) {
this.personId = personId;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getSport() {
return sport;
}
public void setSport(String sport) {
this.sport = sport;
}
public void setGender(String gender) {
this.gender = gender;
}
public String getGender() {
return gender;
}
// public void setCountry(Country country) {
// this.country = country;
// }
//
// public Country getCountry() {
// return country;
// }
public void setOver21(boolean over21) {
this.over21 = over21;
}
public boolean isOver21() {
return over21;
}
public void setCarModels(String[] carModels) {
this.carModels = carModels;
}
public String[] getCarModels() {
return carModels;
}
public void setEmail(String email) {
this.email = email;
}
public String getEmail() {
return email;
}
public void setPhoneNumber(String phoneNumber) {
this.phoneNumber = phoneNumber;
}
public String getPhoneNumber() {
return phoneNumber;
}
@Override
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
@Override
public String toString() {
return "Id: " + getPersonId() + " | "
+ "First Name: " + getFirstName() + " | "
+ " Last Name: " + getLastName() + " | "
+ " Favorite Sport: " + getSport() + " | "
+ " Gender: " + getGender() + " | "
//+ " Country: " + getCountry() + " | "
+ " Over 21: " + isOver21() + " | "
+ " Car models: " + Arrays.asList(getCarModels()) + " | "
+ " Email: " + getEmail() + " | "
+ " Phone: " + getPhoneNumber();
}
}
這里用於點擊 /setup 的控制器：
package org.apache.struts.crud;
import org.apache.struts.crud.dao.MemoryPersonSupportDao;
import org.apache.struts.crud.dao.PersonRepository;
import org.apache.struts.crud.model.Person;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
@Controller
public class HomeController {
private PersonRepository manager;
public HomeController(PersonRepository manager){
this.manager = manager;
}
@GetMapping("/setup")
void setup (){
manager.insertPerson(new Person(1, "Bruce", "Phillips", "basketball", "male"/*,
MemoryPersonSupportDao.getCountry("US")*/, true, new String[]{"Ford", "Nissan"},
"bphillips@ku.edu", "123-456-9999"));
manager.insertPerson(new Person(2, "Antonio", "Sanchez", "mtb", "male"/*,
MemoryPersonSupportDao.getCountry("ES")*/, true, new String[]{"Toyota", "Seat"},
"asanchez@correo-e.es", "555-999-8888"));
}
}
現在我收到這個錯誤：
2019-12-11 15:44:36.496 ERROR 31800 --- [nio-8080-exec-2] 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.InvalidDataAccessApiUsageException: detached entity passed to persist: org.apache.struts.crud.model.Person; nested exception is org.hibernate.PersistentObjectException: detached entity passed to persist: org.apache.struts.crud.model.Person] with root cause
org.hibernate.PersistentObjectException: detached entity passed to persist: org.apache.struts.crud.model.Person
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:124) ~[hibernate-core-5.2.18.Final.jar:5.2.18.Final]
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:58) ~[hibernate-core-5.2.18.Final.jar:5.2.18.Final]
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:783) ~[hibernate-core-5.2.18.Final.jar:5.2.18.Final]
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:768) ~[hibernate-core-5.2.18.Final.jar:5.2.18.Final]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_232]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_232]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_232]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_232]
at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:350) ~[spring-orm-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at com.sun.proxy.$Proxy100.persist(Unknown Source) ~[na:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_232]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_232]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_232]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_232]
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:305) ~[spring-orm-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at com.sun.proxy.$Proxy100.persist(Unknown Source) ~[na:na]
at org.apache.struts.crud.dao.PersonRepository.insertPerson(PersonRepository.java:37) ~[classes/:na]
at org.apache.struts.crud.dao.PersonRepository$$FastClassBySpringCGLIB$$b662eb76.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:746) ~[spring-aop-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139) ~[spring-tx-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294) ~[spring-tx-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98) ~[spring-tx-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688) ~[spring-aop-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.apache.struts.crud.dao.PersonRepository$$EnhancerBySpringCGLIB$$23e06b9d.insertPerson(<generated>) ~[classes/:na]
at org.apache.struts.crud.HomeController.setup(HomeController.java:22) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_232]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_232]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_232]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_232]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:209) ~[spring-web-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136) ~[spring-web-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) ~[spring-webmvc-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:894) ~[spring-webmvc-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800) ~[spring-webmvc-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:991) ~[spring-webmvc-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925) ~[spring-webmvc-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:981) ~[spring-webmvc-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:873) ~[spring-webmvc-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:635) ~[tomcat-embed-core-8.5.39.jar:8.5.39]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:858) ~[spring-webmvc-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) ~[tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat-embed-websocket-8.5.39.jar:8.5.39]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.39.jar:8.5.39]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.39.jar:8.5.39]
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109) ~[spring-web-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.39.jar:8.5.39]
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) ~[spring-web-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.39.jar:8.5.39]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) ~[spring-web-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.13.RELEASE.jar:5.0.13.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) ~[tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493) [tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137) [tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) [tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:798) [tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806) [tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498) [tomcat-embed-core-8.5.39.jar:8.5.39]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.39.jar:8.5.39]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_232]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_232]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.39.jar:8.5.39]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_232]
@Website 我收到這個錯誤：分離的實體傳遞給持久化：org.apache.struts.crud.model.Person; 嵌套異常是 org.hibernate.PersistentObjectException: 分離實體傳遞給持久化：org.apache.struts.crud.model.Person
有人伸出援手嗎？
1 個解決方案
解決方案1
0 2019-12-11 21:12:17
問題是@GeneratedValue(strategy= GenerationType.AUTO)，因為我正在設置一個Id manuell 並生成一個。
但是 crud 界面也有幫助，直到下一個問題。 ;)
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