java - org.hibernate.PropertyValueException : not-null property references a null or transient value : com. rasvek.cms.entity.State.country-6ren

java - org.hibernate.PropertyValueException : not-null property references a null or transient value : com. rasvek.cms.entity.State.country

转载作者：太空宇宙更新时间：2023-11-04 10:28:00

我对 hibernate 和 restSpring 很陌生

我已经使用 hibernate 工具从数据库生成了Country和State实体

我的数据库看起来像这样国家表，country_id为PK

   +--------------------+--------------+------+-----+---------+----------------+
| Field              | Type         | Null | Key | Default | Extra          |
+--------------------+--------------+------+-----+---------+----------------+
| country_id         | int(11)      | NO   | PRI | NULL    | auto_increment |
| country_name       | varchar(255) | YES  |     | NULL    |                |
| country_short_code | varchar(255) | YES  |     | NULL    |                |
| status             | varchar(255) | YES  |     | NULL    |                |
+--------------------+--------------+------+-----+---------+----------------+

州表country_id是fk

+------------+--------------+------+-----+---------+----------------+
| Field      | Type         | Null | Key | Default | Extra          |
+------------+--------------+------+-----+---------+----------------+
| state_id   | int(11)      | NO   | PRI | NULL    | auto_increment |
| state_name | varchar(255) | YES  |     | NULL    |                |
| country_id | int(11)      | NO   | MUL | NULL    |                |
| status     | varchar(255) | YES  |     | NULL    |                |
+------------+--------------+------+-----+---------+----------------+

请查看我的实体类

国家.java

 package com.rasvek.cms.entity;
    // Generated May 14, 2018 6:42:11 AM by Hibernate Tools 5.1.7.Final

    import java.util.HashSet;
    import java.util.Set;
    import javax.persistence.Column;
    import javax.persistence.Entity;
    import javax.persistence.FetchType;
    import javax.persistence.GeneratedValue;
    import static javax.persistence.GenerationType.IDENTITY;
    import javax.persistence.Id;
    import javax.persistence.OneToMany;
    import javax.persistence.Table;



    /**
     * Country generated by hbm2java
     */

    @Entity
    @Table(name = "country", catalog = "cms_db")
    public class Country implements java.io.Serializable {

        private Integer countryId;
        private String countryName;
        private String countryShortCode;
        private String status;
        private Set<State> states = new HashSet<State>(0);

        public Country() {
        }

        public Country(String countryName, String countryShortCode, String status, Set<State> states) {
            this.countryName = countryName;
            this.countryShortCode = countryShortCode;
            this.status = status;
            this.states = states;
        }

        @Id
        @GeneratedValue(strategy = IDENTITY)

        @Column(name = "country_id", unique = true, nullable = false)
        public Integer getCountryId() {
            return this.countryId;
        }

        public void setCountryId(Integer countryId) {
            this.countryId = countryId;
        }

        @Column(name = "country_name")
        public String getCountryName() {
            return this.countryName;
        }

        public void setCountryName(String countryName) {
            this.countryName = countryName;
        }

        @Column(name = "country_short_code")
        public String getCountryShortCode() {
            return this.countryShortCode;
        }

        public void setCountryShortCode(String countryShortCode) {
            this.countryShortCode = countryShortCode;
        }

        @Column(name = "status")
        public String getStatus() {
            return this.status;
        }

        public void setStatus(String status) {
            this.status = status;
        }

        @OneToMany(fetch = FetchType.LAZY, mappedBy = "country")
        public Set<State> getStates() {  
            return this.states;
        }

        public void setStates(Set<State> states) {
            this.states = states;
        }

        @Override
        public String toString() {
            return "Country [countryId=" + countryId + ", countryName=" + countryName + ", countryShortCode="
                    + countryShortCode + ", status=" + status + ", states=" + states + "]";
        }

    }

状态.java

package com.rasvek.cms.entity;
// Generated May 14, 2018 6:42:11 AM by Hibernate Tools 5.1.7.Final

import java.util.HashSet;
import java.util.Set;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import static javax.persistence.GenerationType.IDENTITY;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.Table;



/**
 * State generated by hbm2java
 */

@Entity
@Table(name = "state", catalog = "cms_db")
public class State implements java.io.Serializable {

    private Integer stateId;
    private Country country;
    private String stateName;
    private String status;  
    private Set<District> districts = new HashSet<District>(0);

    public State() {
    }

    public State(Country country) {
        this.country = country;
    }

    public State(Country country, String stateName, String status, Set<District> districts) {
        this.country = country;
        this.stateName = stateName;
        this.status = status;
        this.districts = districts;
    }

    @Id
    @GeneratedValue(strategy = IDENTITY)

    @Column(name = "state_id", unique = true, nullable = false)
    public Integer getStateId() {
        return this.stateId;
    }

    public void setStateId(Integer stateId) {
        this.stateId = stateId;
    }

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "country_id", nullable = false)
    public Country getCountry() {
        return this.country;
    }

    public void setCountry(Country country) {
        this.country = country;
    }

    @Column(name = "state_name")
    public String getStateName() {
        return this.stateName;
    }

    public void setStateName(String stateName) {
        this.stateName = stateName;
    }

    @Column(name = "status")
    public String getStatus() {
        return this.status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    @OneToMany(fetch = FetchType.LAZY, mappedBy = "state")
    public Set<District> getDistricts() {
        return this.districts;
    } 

    public void setDistricts(Set<District> districts) {
        this.districts = districts;
    }

    @Override
    public String toString() {
        return "State [stateId=" + stateId + ", country=" + country + ", stateName=" + stateName + ", status=" + status
                + ", districts=" + districts + "]";
    }

}

Controller 和方法

@RestController
@RequestMapping(value="/master")
public class MasterController
{
@PostMapping("/addState")
    public ResponseEntity<Map<String, Object>> addState(@RequestBody State theState) {
        System.out.println("add State"+theState);
        ResponseEntity<Map<String, Object>> responseEntity=null;
        try {  


        boolean res =service.addState(theState) ;         
        if (res) {
            headers.add("head", "State");
            message.put("status", true);
            message.put("data", "State has been  added successfully !");
            responseEntity= new ResponseEntity<Map<String, Object>>(message, headers, HttpStatus.CREATED);

        } else {
            headers.add("head", "null");
            message.put("status", false);
            message.put("errorMessage", " State has not  been  added successfully");
            responseEntity=new ResponseEntity<Map<String, Object>>(message, headers, HttpStatus.NOT_FOUND);
            }  
    }
        catch (Exception e) {
            e.printStackTrace(); 
        }
        return responseEntity;
    }

}

服务方式

@Override
    @Transactional
    public boolean addState(State theState) {
        // TODO Auto-generated method stub
        System.out.println("service add state");
        return theMasterDao.addState(theState); 
    }

DAO

@Override
    public boolean addState(State theState) {
         boolean success = false;
         try {
             System.out.println("add state imple");
                currentSession=sessionFactory.getCurrentSession();
                currentSession.saveOrUpdate(theState);
                success=true;
         }
         catch (Exception e) {
            e.printStackTrace();
        }
        return success;
    }

当我尝试添加状态时，它给出了以下异常

org.hibernate.PropertyValueException: not-null property references a null or transient value : com.rasvek.cms.entity.State.country
    at org.hibernate.engine.internal.Nullability.checkNullability(Nullability.java:92)
    at org.hibernate.action.internal.AbstractEntityInsertAction.nullifyTransientReferencesIfNotAlready(AbstractEntityInsertAction.java:115)
    at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:69)
    at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:637)
    at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:282)
    at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:263)
    at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:317)
    at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:318)
    at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:275)
    at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:182)
    at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:113)
    at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:192)
    at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:177)
    at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:97)
    at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:73)
    at org.hibernate.internal.SessionImpl.fireSaveOrUpdate(SessionImpl.java:660)
    at org.hibernate.internal.SessionImpl.saveOrUpdate(SessionImpl.java:652)
    at org.hibernate.internal.SessionImpl.saveOrUpdate(SessionImpl.java:647)
    at com.rasvek.cms.dao.MasterDaoImpl.addState(MasterDaoImpl.java:111)
    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.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
    at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:52)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:52)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
    at com.sun.proxy.$Proxy87.addState(Unknown Source)
    at com.rasvek.cms.service.MasterSeviceImpl.addState(MasterSeviceImpl.java:55)
    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.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
    at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:52)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:52)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
    at com.sun.proxy.$Proxy88.addState(Unknown Source)
    at com.rasvek.cms.controller.MasterController.addState(MasterController.java:158)
    at com.rasvek.cms.controller.MasterController$$FastClassBySpringCGLIB$$c2eff8c2.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
    at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:52)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:52)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673)
    at com.rasvek.cms.controller.MasterController$$EnhancerBySpringCGLIB$$f79a04c4.addState(<generated>)
    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.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
    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:141)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:528)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1100)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:687)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1520)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1476)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Unknown Source)
org.hibernate.AssertionFailure: null id in com.rasvek.cms.entity.State entry (don't flush the Session after an exception occurs)
    at org.hibernate.event.internal.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:60)
    at org.hibernate.event.internal.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:175)
    at org.hibernate.event.internal.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:135)
    at org.hibernate.event.internal.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:216)
    at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:85)
    at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:38)
    at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1436)
    at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:493)
    at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3206)
    at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2412)
    at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:473)
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:156)
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$100(JdbcResourceLocalTransactionCoordinatorImpl.java:38)
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:231)
    at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:68)
    at org.springframework.orm.hibernate5.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:582)
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:765)
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:734)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:518)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:292)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
    at com.sun.proxy.$Proxy88.addState(Unknown Source)
    at com.rasvek.cms.controller.MasterController.addState(MasterController.java:158)
    at com.rasvek.cms.controller.MasterController$$FastClassBySpringCGLIB$$c2eff8c2.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
    at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:52)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:52)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673)
    at com.rasvek.cms.controller.MasterController$$EnhancerBySpringCGLIB$$f79a04c4.addState(<generated>)
    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.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
    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:141)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:528)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1100)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:687)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1520)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1476)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Unknown Source)

state中没有像private intcountryId这样的成员变量，而是有private Countrycountry;，但在国家表中有一个名为country_id的字段，但hibernate工具没有生成countryId字段。

是否有任何内部问题或者我错过了什么如何现在插入我的状态？

请帮助我

最佳答案

从 ajax 发送的 json 对象中有一个错误

我的 json 对象是这样的

var countryId=$(".newSec #newCountryName").val();   
               var stateName=$(".newSec #newStateName").val();
              alert(countryId);

                        var JSONObject= {
                                "countryId":countryId,
                                "stateName":stateName
                                    };

                        var myJSON = JSON.stringify(JSONObject);

但应该是这样的

 var country={};
             var state={};
             country["countryId"] = $(".newSec #newCountryName").val();
               var countryId=$(".newSec #newCountryName").val();
               var stateName=$(".newSec #newStateName").val();


                        state["stateName"]=stateName;
                        state["country"]=country;
                        var myJSON = JSON.stringify(JSONObject);

关于java - org.hibernate.PropertyValueException : not-null property references a null or transient value : com. rasvek.cms.entity.State.country，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/50323004/

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java - org.hibernate.PropertyValueException : not-null property references a null or transient value : com. rasvek.cms.entity.State.country