我正在使用SpringMVC在Spring上使用应用程序，遇到以下错误，我不知道如何处理。
现在我在控制台中收到此消息：
org.hibernate.TypeMismatchException: Provided id of the wrong type. Expected: class java.lang.Integer, got class java.lang.String
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:86)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:878)
at org.hibernate.impl.SessionImpl.load(SessionImpl.java:795)
at org.hibernate.impl.SessionImpl.load(SessionImpl.java:788)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:301)
at com.sun.proxy.$Proxy11.load(Unknown Source)
at com.my.dao.DepartementImplDB.getDepartementByNom(DepartementImplDB.java:54)
at com.my.dao.DepartementImplDB.addDepartement(DepartementImplDB.java:29)
at com.my.service.DepartementImplMetier.create(DepartementImplMetier.java:57)
at com.my.controller.ImportController.Read(ImportController.java:279)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.doInvokeMethod(HandlerMethodInvoker.java:710)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:167)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:414)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:402)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:563)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1521)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1478)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
这是我的ImportController类
/**
* @author Ilias
*/
package com.my.controller;
//import ...
import com.my.dao.Departement;
@Controller
public class ImportController {
DepartementImplMetier dbD = new DepartementImplMetier();
@RequestMapping(value="/read")
public String Read(Model model,@RequestParam CommonsMultipartFile[] fileUpload)
throws IOException, EncryptedDocumentException, InvalidFormatException, java.text.ParseException
{
liste = extraire(modelnom);
for(int m=0, i=29;i<liste.size();i=i+29){//i=i+29
Employe employe= new Employe();
Departement departement = new Departement();
if(i % 29 == 0) m++;
//... Some code here
String dep = (String)liste.get(29*m+13).toString();
Departement d = new Departement();
departement.setNomDepartement(dep);
boolean bool=true;
List<Departement> departements = dbD.getAll();
boolean depbool = true;
for(int j=0;j< departements.size();j++){
if(departements.get(j).getNomDepartement() == dep )
{
depbool = false;
}
if(depbool){
try {
dbD.create(departement);
} catch (Throwable e) {
e.printStackTrace();
}
}
}
for(int n=0;n<employes.size();n++){
if(employes.get(n).getMatriculeMY() == (int)mat )
{
bool= false;
}
}
if(bool){
try {
dbD.create(departement);
dbE.create(employe);
} catch (Throwable e) {
e.printStackTrace();
}
}
}
}
return "redirect";
}}
}
这是我的Employe.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 5 ao?t 2015 11:05:44 by Hibernate Tools 3.4.0.CR1 -->
<hibernate-mapping>
<class name="com.my.dao.Employe" table="EMPLOYE">
<id name="id" type="int">
<column name="ID" />
<generator class="native" />
</id>
<property name="nomEmploye" type="java.lang.String">
<column name="NOMEMPLOYE" />
</property>
<property name="prenomEmploye" type="java.lang.String">
<column name="PRENOMEMPLOYE" />
</property>
<property name="matriculeMY" type="int">
<column name="MATRICULEMY" />
</property>
<property name="adresse" type="java.lang.String">
<column name="ADRESSE" />
</property>
<property name="sexe" type="java.lang.String">
<column name="SEXE" />
</property>
<property name="cin" type="java.lang.String">
<column name="CIN" />
</property>
<property name="dateNaissance" type="java.lang.String">
<column name="DATENAISSANCE" />
</property>
<property name="situationFamiliale" type="java.lang.String">
<column name="SITUATIONFAMILIALE" />
</property>
<property name="dateEntree" type="java.lang.String">
<column name="DATEENTREE" />
</property>
<property name="dateSortie" type="java.lang.String">
<column name="DATESORTIE" />
</property>
<property name="numCIMR" type="java.lang.String">
<column name="NUMCIMR" />
</property>
<property name="numCNSS" type="java.lang.String">
<column name="NUMCNSS" />
</property>
<property name="numMUT" type="java.lang.String">
<column name="NUMMUT" />
</property>
<property name="profile" type="java.lang.String">
<column name="PROFILE" />
</property>
<property name="resteConge" type="java.lang.String">
<column name="RESTECONGE" />
</property>
<property name="banque" type="java.lang.String">
<column name="BANQUE" />
</property>
<property name="numCpteBanc" type="java.lang.String">
<column name="NUMCPTEBANC" />
</property>
<!-- <property name="fonction" type="java.lang.String">
<column name="FONCTION" />
</property> -->
<property name="salaire" type="float">
<column name="SALAIRE" />
</property>
<property name="indTransport" type="float">
<column name="INDTRANSPORT" />
</property>
<property name="indRepresent" type="float">
<column name="INDREPRESENT" />
</property>
<property name="indPanier" type="float">
<column name="INDPANIER" />
</property>
<many-to-one name="eDepartement" class="com.my.dao.Departement" access="field" fetch="join">
<column name="EDEPARTEMENT" />
</many-to-one>
<many-to-one name="eFonction" class="com.my.dao.Fonction" access="field" fetch="join">
<column name="EFONCTION" />
</many-to-one>
<many-to-one name="eService" class="com.my.dao.Service" access="field" fetch="join">
<column name="ESERVICE" />
</many-to-one>
<many-to-one name="eTypePaiement" class="com.my.dao.TypePaiement" access="field" fetch="join">
<column name="ETYPEPAIEMENT" />
</many-to-one>
<many-to-one name="eModePaiement" class="com.my.dao.ModePaiement" access="field" fetch="join">
<column name="EMODEPAIEMENT" />
</many-to-one>
</class>
</hibernate-mapping>
这是我的Departement.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 5 ao?t 2015 11:05:44 by Hibernate Tools 3.4.0.CR1 -->
<hibernate-mapping>
<class name="com.my.dao.Departement" table="DEPARTEMENT">
<id name="id" type="int">
<column name="ID" />
<generator class="native" />
</id>
<property name="nomDepartement" type="java.lang.String">
<column name="NOMDEPARTEMENT" />
</property>
<set name="Employe" inverse="true">
<key column="ID" not-null="true"/>
<one-to-many class="com.my.dao.Employe" />
</set>
</class>
</hibernate-mapping>
调试后，问题出在这里：
boolean depbool = true;
for(int j=0;j< departements.size();j++){
if(departements.get(j).getNomDepartement() == dep )
{
depbool = false;
}
if(depbool){
try {
dbD.create(departement);
} catch (Throwable e) {
e.printStackTrace();
}
}
}
完全在这里：
dbD.create(departement);
这个DepartementImplDB类
package com.my.dao;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.criterion.Restrictions;
import com.my.util.HibernateUtil;
/**
* @author Ilias
*
*/
public class DepartementImplDB implements DepartementDao {
/**
* @see com.my.dao.DepartementDao#addDepartement(com.my.dao.Departement)
*/
@Override
public int addDepartement(Departement D) {
// TODO Auto-generated method stub
Session session = HibernateUtil.getInstance().getSessionFactory().getCurrentSession();
session.beginTransaction();System.out.println("********");
session.save(D);System.out.println("departement implement metier");
session.getTransaction().commit();
D=this.getDepartementByNom(D.getNomDepartement());
return D.getId();
}
/**
* @see com.my.dao.DepartementDao#getDepartementById(int)
*/
@Override
public Departement getDepartementById(int id) {
// TODO Auto-generated method stub
Session session = HibernateUtil.getInstance().getSessionFactory().getCurrentSession();
Departement dept = new Departement();
try {
session.beginTransaction();
dept = (Departement) session.load(Departement.class, id);
} catch (HibernateException e) {
//LOGGER.error(e);
e.printStackTrace();
if (session.getTransaction().isActive()) {
session.getTransaction().rollback();
}
}
return dept;
}
/**
* @see com.my.dao.DepartementDao#getDepartementByNom(java.lang.String)
*/
@Override
public Departement getDepartementByNom(String nomDepartement) {
Session session = HibernateUtil.getInstance().getSessionFactory().getCurrentSession();
Departement result = new Departement();
try {
session.beginTransaction();
Criteria criteria = session.createCriteria(Departement.class);
criteria.add(Restrictions.eq("nomDepartement", nomDepartement).ignoreCase());
result = (Departement) criteria.uniqueResult();
session.getTransaction().commit();
} catch (HibernateException e) {
//LOGGER.error(e);
e.printStackTrace();
if (session.getTransaction().isActive()) {
session.getTransaction().rollback();
}
}
return result;
}
/**
* @see com.my.dao.DepartementDao#deleteDepartement(int)
*/
@Override
public void deleteDepartement(int id) {
// TODO Auto-generated method stub
Session session = HibernateUtil.getInstance().getSessionFactory().getCurrentSession();
session.beginTransaction();
Departement dept = (Departement) session.load(Departement.class, id);
session.delete(dept);
session.getTransaction().commit();
}
/**
* @see com.my.dao.DepartementDao#updateDepartement(com.my.dao.Departement)
*/
@Override
public void updateDepartement(Departement D) {
// TODO Auto-generated method stub
}
/**
* @see com.my.dao.DepartementDao#getAllDepartement()
*/
@Override
public List<Departement> getAllDepartement() {
// TODO Auto-generated method stub
Session session = HibernateUtil.getInstance().getSessionFactory().getCurrentSession();
session.beginTransaction();
return session.createQuery("from Departement").list();
}
}
这就是我想做的（UML）：imgur
这是我上一个错误的链接，以获取更多信息：Link
有人可以帮忙吗？
最佳答案
您的问题真是一团糟...但是，如果您阅读例外：
提供的ID类型错误。预期：类java.lang.Integer，得到类java.lang.String
在查看Departement类后，Anf只有2个字段和一组（根据休眠映射）：
int id;
String nomDepartament;
Set employees;
这仅意味着，您将
nomDepartament字段而不是id传递给了代码中的某处...但是就您没有提供的而言，
Departement类或DepartementImplMetier.create()方法是导致异常的一种，我不能说更多。所以... start here关注您的问题，仅提供代码的重要部分。