我正在配置我的项目,我尝试了here和there中提到的解决方案,但我仍然遇到同样的错误。仅使用@PersistenceContext(type = PersistenceContextType.EXTENDED)我不会获得异常但不反映更新/保存/删除操作。
的applicationContext.xml
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
<bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter">
<property name="databasePlatform" value="org.eclipse.persistence.platform.database.MySQLPlatform" />
<property name="showSql" value="true" />
</bean>
<!-- This defines the entity manager factory with some custom properties -->
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="myPU"/>
<property name="dataSource" ref="dataSourceTest" />
<property name="jpaVendorAdapter" ref="jpaVendorAdapter" />
</bean>
<!-- This defines the hsqldb data source -->
<bean id="dataSourceTest" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="jdbc/myDS"/>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<tx:annotation-driven/>
applicationDispatcher-servlet.xml中
<context:component-scan base-package="com.app.services,com.app.db,com.app.controller" />
<mvc:default-servlet-handler/>
<mvc:annotation-driven />
的web.xml
<display-name>MyApp</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet-name>applicationDispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>applicationDispatcher</servlet-name>
<url-pattern>*.go</url-pattern>
</servlet-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
ApplicationController.java
package com.app.controller;
import javax.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import com.app.model.Country;
import com.app.services.TestService;
@Controller
public class ApplicationController {
@Autowired
private HttpServletRequest request;
@Autowired
private TestService serv;
@RequestMapping(value="/hellotest.go", method = RequestMethod.POST, headers = "Accept=application/json")
public @ResponseBody Country sayHelloTest2(@RequestBody Country country) {
Country pais=new Country();
pais.setCountryName("Yunaites");
pais.setId(100);
pais.setPopulation(1000);
//model.addAttribute("greeting", "Hello World Again, from Spring 4 MVC");
//TestService serv=new TestService();
serv.guardaTest();
country.toString();
return pais;
}
}
TestService.java
package com.app.services;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.PersistenceContextType;
import javax.persistence.PersistenceUnit;
import javax.transaction.Transactional;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import com.app.db.FirstRepository;
import com.app.entity.CatDivision;
@Service
public class TestService {
@Autowired
FirstRepository repo;
public void guardaTest(){
repo.register(null);
}
public FirstRepository getRepo() {
return repo;
}
public void setRepo(FirstRepository repo) {
this.repo = repo;
}
}
FirstRepository.java
package com.app.db;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.PersistenceContextType;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Repository;
import com.app.entity.CatDivision;
@Transactional
//@Scope(proxyMode = ScopedProxyMode)
@Repository
public class FirstRepository {
@PersistenceContext(type=PersistenceContextType.EXTENDED)
private EntityManager em;
public EntityManager getEm() {
return em;
}
public void setEm(EntityManager em) {
this.em = em;
}
@Transactional
public void register(CatDivision division) {
// Save employee
CatDivision div1=this.em.find(CatDivision.class, 1);
System.out.println("Div:"+div1);
CatDivision div=new CatDivision();
div.setActivo(1);
div.setNombre("Test");
//div.setMbcareas(mbcareas);
this.em.persist(div);
}
}
CatDivision.java
package com.app.entity;
import java.io.Serializable;
import javax.persistence.*;
import java.util.List;
/**
* The persistent class for the mbcdivisio database table.
*
*/
@Entity
@Table(name="mbcdivisio")
@NamedQuery(name="CatDivision.findAll", query="SELECT c FROM CatDivision c")
public class CatDivision implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private Integer iddivisio;
private Integer activo;
private String nombre;
//bi-directional many-to-one association to CatArea
@OneToMany(mappedBy="mbcdivisio")
private List<CatArea> mbcareas;
public CatDivision() {
}
public CatDivision(Integer iddivisio) {
this.iddivisio=iddivisio;
}
public Integer getIddivisio() {
return this.iddivisio;
}
public void setIddivisio(Integer iddivisio) {
this.iddivisio = iddivisio;
}
public Integer getActivo() {
return this.activo;
}
public void setActivo(Integer activo) {
this.activo = activo;
}
public String getNombre() {
return this.nombre;
}
public void setNombre(String nombre) {
this.nombre = nombre;
}
public List<CatArea> getMbcareas() {
return this.mbcareas;
}
public void setMbcareas(List<CatArea> mbcareas) {
this.mbcareas = mbcareas;
}
public CatArea addMbcarea(CatArea mbcarea) {
getMbcareas().add(mbcarea);
mbcarea.setMbcdivisio(this);
return mbcarea;
}
public CatArea removeMbcarea(CatArea mbcarea) {
getMbcareas().remove(mbcarea);
mbcarea.setMbcdivisio(null);
return mbcarea;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((iddivisio == null) ? 0 : iddivisio.hashCode());
result = prime * result + ((nombre == null) ? 0 : nombre.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
CatDivision other = (CatDivision) obj;
if (iddivisio == null) {
if (other.iddivisio != null)
return false;
} else if (!iddivisio.equals(other.iddivisio))
return false;
if (nombre == null) {
if (other.nombre != null)
return false;
} else if (!nombre.equals(other.nombre))
return false;
return true;
}
@Override
public String toString() {
return "CatDivision [iddivisio=" + iddivisio + ", activo=" + activo + ", nombre=" + nombre + ", mbcareas="
+ mbcareas + "]";
}
}
答案 0 :(得分:0)
如果你想使用Transaction然后你需要启动Transaction并且在持久化之后你需要提交并关闭Transaction,你可以在下面的示例代码中使用Transaction:
em.getTransaction( ).begin( );
em.persist(div);
em.getTransaction( ).commit( );
em.close( );
也可以在您的配置中使用<tx:annotation-driven transaction-manager="transactionManager" />
。