我是Java EE的初学者和春天。实际上我编写了一个应用程序，我花了几个小时来处理一个我无法纠正的错误。我想指明我看其他处理此异常的主题，但我仍然无法解决它。
我正在尝试使用此查询获取帐户列表：
@Override
public List<Account> getAccountByClient2(Client client){
LOGGER.log(Level.INFO,"customer id : " + client.getId() );
List<Account> accounts = sessionFactory.getCurrentSession()
.createQuery("from Account a where a.client = :client ")
.setParameter("client", client)
.getResultList();
LOGGER.log(Level.INFO, " size of the list : " +accounts.size());
return accounts;
}
此查询位于表account上，表client上有一个外键，此表有bean：
Bean帐户
@Entity
@Table(name="account")
public class Account {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "iban")
private String iban;
@JoinColumn(name="id_client")
@ManyToOne
private Client client;
@Column(name="overdraftallowed")
private Double overdraftallowed;
@JoinColumn(name="idtypecodeaccount")
@ManyToOne
private AccountType accountType;
@JoinColumn(name="id_balance")
@ManyToOne
private Balance balance;
//getters and setters
public String toString() {
return "Account [iban=" + iban + ", overdraftAllowed=" +
overdraftallowed + "]";
}
}
Bean客户端
@Entity
@Table(name="client")
public class Client {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
@Column(name="id_client")
private Integer id;
@Column(name="gender")
private String gender;
@Column(name="statut")
private String statut;
@Column(name="first_name")
private String first_name;
@Column(name="last_name")
private String last_name;
@Column(name="income")
private float income;
@Column(name="city")
private String city;
@Column(name="street")
private String street;
@Column(name="postal_code")
private String postal_code;
@Column(name="phone_number")
private String phone_number;
@Column(name="mail")
private String mail;
@Column(name="birthday")
private Date birthday;
@Column(name="birthplace_city")
private String birthplace_city;
@Column(name="nationality")
private String nationality;
@JoinColumn(name="id_status")
@ManyToOne
private Status status;
@JoinColumn(name="id_workgroup")
@ManyToOne
private WorkGroup workGroup;
@JoinColumn(name="id_user")
@ManyToOne
private User user;
@Column(name="abnormal_transaction_service")
private boolean abnormalTransactionService;
public Client(String gender, String statut, String first_name, String last_name, float income, String city, String street, String postal_code, String phone_number, String mail, Date birthday, String birthplace_city, String nationality) {
this.gender = gender;
this.statut = statut;
this.first_name = first_name;
this.last_name = last_name;
this.income = income;
this.city = city;
this.street = street;
this.postal_code = postal_code;
this.phone_number = phone_number;
this.mail = mail;
this.birthday = birthday;
this.birthplace_city = birthplace_city;
this.nationality = nationality;
}
//getters and setters
public void setAbnormalTransactionService(boolean abnormalTransactionService) {
this.abnormalTransactionService = abnormalTransactionService;
}
}
此查询无效，并在日志中返回此异常：
[2017-05-30T10:18:16.111+0200] [glassfish 4.0] [INFO] []
[edu.sodteam.dao.AccountDaoImpl] [tid: _ThreadID=23 _ThreadName=http-
listener-1(4)] [timeMillis: 1496132296111] [levelValue: 800] [[
customer id : 1]]
[2017-05-30T10:18:16.223+0200] [glassfish 4.0] [WARN] []
[org.hibernate.engine.jdbc.spi.SqlExceptionHelper] [tid: _ThreadID=23
_ThreadName=http-listener-1(4)] [timeMillis: 1496132296223] [levelValue: 900]
[[
SQL Error: 0, SQLState: 42883]]
[2017-05-30T10:18:16.224+0200] [glassfish 4.0] [ERROR] []
[org.hibernate.engine.jdbc.spi.SqlExceptionHelper] [tid: _ThreadID=23
_ThreadName=http-listener-1(4)] [timeMillis: 1496132296224] [levelValue: 1000]
[[
ERROR: operator does not exist: character varying = integer
Indice : No operator matches the given name and argument type(s). You might
need to add explicit type casts.
Position : 176]]
[2017-05-30T10:18:16.227+0200] [glassfish 4.0] [INFO] []
[org.hibernate.event.internal.DefaultLoadEventListener] [tid: _ThreadID=23
_ThreadName=http-listener-1(4)] [timeMillis: 1496132296227] [levelValue: 800]
[[
HHH000327: Error performing load command :
org.hibernate.exception.SQLGrammarException: could not extract ResultSet]]
[2017-05-30T10:18:16.332+0200] [glassfish 4.0] [WARNING] []
[javax.enterprise.web] [tid: _ThreadID=23 _ThreadName=http-listener-1(4)]
[timeMillis: 1496132296332] [levelValue: 900] [[
StandardWrapperValve[servlet-dispatcher]: Servlet.service() for servlet
servlet-dispatcher threw exception
org.postgresql.util.PSQLException: ERROR: operator does not exist: character
varying = integer
Indice : No operator matches the given name and argument type(s). You might
need to add explicit type casts.
Position : 176
at
org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl
.java:2182)
at
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:
1911)
at
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:173)
at
org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:615)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:465)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:350)
at sun.reflect.GeneratedMethodAccessor136.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.postgresql.ds.jdbc23.AbstractJdbc23PooledConnection$StatementHandler.invoke(AbstractJdbc23PooledConnection.java:453)
at com.sun.proxy.$Proxy246.executeQuery(Unknown Source)
at com.sun.gjc.spi.jdbc40.PreparedStatementWrapper40.executeQuery(PreparedStatementWrapper40.java:642)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:70)
at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.getResultSet(AbstractLoadPlanBasedLoader.java:434)
at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeQueryStatement(AbstractLoadPlanBasedLoader.java:186)
at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:121)
at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:86)
at org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load(AbstractLoadPlanBasedEntityLoader.java:167)
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4019)
at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:508)
at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:478)
at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:219)
at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:278)
at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:121)
at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:89)
at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1222)
at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1105)
at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:646)
at org.hibernate.type.EntityType.resolve(EntityType.java:431)
at org.hibernate.engine.internal.TwoPhaseLoad.doInitializeEntity(TwoPhaseLoad.java:151)
at org.hibernate.engine.internal.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:125)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:1146)
at org.hibernate.loader.Loader.processResultSet(Loader.java:1005)
at org.hibernate.loader.Loader.doQuery(Loader.java:943)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:349)
at org.hibernate.loader.Loader.doList(Loader.java:2615)
at org.hibernate.loader.Loader.doList(Loader.java:2598)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2430)
at org.hibernate.loader.Loader.list(Loader.java:2425)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:502)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:371)
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:216)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1473)
at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1426)
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1398)
at org.hibernate.Query.getResultList(Query.java:427)
at edu.sodteam.dao.AccountDaoImpl.getAccountByClient2(AccountDaoImpl.java:116)
at edu.sodteam.service.ServiceConsultAccount.getCustomerAccount(ServiceConsultAccount.java:33)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
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.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
at com.sun.proxy.$Proxy826.getCustomerAccount(Unknown Source)
at edu.sodteam.controller.ConsultAccountController.displayAccount(ConsultAccountController.java:32)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:220)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:134)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:116)
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:963)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:344)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:316)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
at java.lang.Thread.run(Thread.java:745)
]]
如果我正确地理解了错误，我会尝试比较一个随整数变化的字符，但是我在我的数据库中验证并且在我的bean中这两列都是整数，所以我不明白它为什么没有。工作。我试图将此参数转换为整数，如下所示：
List<Account> accounts = sessionFactory.getCurrentSession()
.createQuery("from Account a where cast(a.client.id as integer) = :client")
.setParameter("client", client.getId())
.getResultList();
但它不起作用，所以我完全迷失了，我希望有人可以帮助我解决这个问题。对不起，如果我的英语不是很好，感谢那些花时间阅读这个主题的人。
已编辑
感谢您的回答，这里是我的表客户端的创建查询：
CREATE TABLE public.client
(
id_client integer NOT NULL DEFAULT nextval('client_id_client_seq'::regclass),
first_name character varying(50) NOT NULL,
last_name character varying(50) NOT NULL,
gender character varying(50) NOT NULL,
statut character varying(50) NOT NULL,
income numeric(25,0),
city character varying(50) NOT NULL,
street character varying(50) NOT NULL,
postal_code character varying(5) NOT NULL,
phone_number character varying(10) NOT NULL,
mail character varying(50) NOT NULL,
birthday date,
birthplace_city character varying(50) NOT NULL,
nationality character varying(50) NOT NULL,
abnormal_transaction_service boolean,
id_user integer NOT NULL,
id_status integer NOT NULL,
id_workgroup integer NOT NULL,
CONSTRAINT prk_constraint_client PRIMARY KEY (id_client),
CONSTRAINT fk_client_id_status FOREIGN KEY (id_status)
REFERENCES public.status (id_status) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE NO ACTION,
CONSTRAINT fk_client_id_user FOREIGN KEY (id_user)
REFERENCES public."user" (id_user) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE NO ACTION,
CONSTRAINT fk_client_id_workgroup FOREIGN KEY (id_workgroup)
REFERENCES public.workgroup (id_workgroup) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE NO ACTION,
CONSTRAINT client_mail_key UNIQUE (mail)
)
正如您所看到的，它是一个整数，我验证了表帐户，它也是一个整数。我试图完全不使用setparameter编写查询，但它仍然是同样的问题。