java - SQLSyntaxErrorException : Table/View 'BUYER' does not exist. 缺少什么？

Question

几周前我去度假，我暂停了我的一个项目。当我回来时，我只是检查注册页面，当我收到一个 SQLException 说一个表不存在时，我感到很惊讶。我不明白，因为那个表存在，我是从一个实体创建的。我把代码贴在这里，这样你就可以看到一切似乎都没有问题。我认为这可能与数据库有关(我使用的是 glassfish 3 应用服务器)。

这是一张来自用户界面的图像，表明问题与某些验证方法有关(检查用户是否已经存在以及检查电子邮件是否已经存在):

以防万一，我还会打印 stackTrace:

WARNING: Local Exception Stack: 
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.0.1.v20100213-r6600): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLSyntaxErrorException: Table/View 'BUYER' does not exist.
Error Code: -1
Call: SELECT COUNT(NICKNAME) FROM BUYER WHERE (NICKNAME = ?)
    bind => [test]
Query: ReportQuery(referenceClass=Buyer sql="SELECT COUNT(NICKNAME) FROM BUYER WHERE (NICKNAME = ?)")
    at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:333)
    at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:687)
    at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:530)
    at org.eclipse.persistence.sessions.server.ServerSession.executeCall(ServerSession.java:529)
    at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:205)
    at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:191)
    at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeSelectCall(DatasourceCallQueryMechanism.java:262)
    at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.selectAllRows(DatasourceCallQueryMechanism.java:618)
    at org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllRowsFromTable(ExpressionQueryMechanism.java:2537)
    at org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllReportQueryRows(ExpressionQueryMechanism.java:2480)
    at org.eclipse.persistence.queries.ReportQuery.executeDatabaseQuery(ReportQuery.java:838)
    at org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:675)
    at org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:958)
    at org.eclipse.persistence.queries.ReadAllQuery.execute(ReadAllQuery.java:432)
    at org.eclipse.persistence.queries.ObjectLevelReadQuery.executeInUnitOfWork(ObjectLevelReadQuery.java:1021)
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2857)
    at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1225)
    at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1207)
    at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1181)
    at org.eclipse.persistence.internal.jpa.EJBQueryImpl.executeReadQuery(EJBQueryImpl.java:453)
    at org.eclipse.persistence.internal.jpa.EJBQueryImpl.getSingleResult(EJBQueryImpl.java:714)
    at ejbs.BuyersRegistratorEJB.nickNameAlreadyExists(BuyersRegistratorEJB.java:82)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1056)
    at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1128)
    at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5292)
    at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:615)
    at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:797)
    at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:567)
    at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:47)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:858)
    at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:797)
    at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:567)
    at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doAround(SystemInterceptorProxy.java:157)
    at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:139)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:858)
    at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:797)
    at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:367)
    at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5264)
    at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5252)
    at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:190)
    at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:84)
    at $Proxy174.nickNameAlreadyExists(Unknown Source)
    at managedbeans.RegistrationController.validateNickName(RegistrationController.java:170)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.sun.el.parser.AstValue.invoke(AstValue.java:234)
    at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297)
    at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:43)
    at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:72)
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:98)
    at javax.faces.validator.MethodExpressionValidator.validate(MethodExpressionValidator.java:95)
    at javax.faces.component.UIInput.validateValue(UIInput.java:1127)
    at javax.faces.component.UIInput.validate(UIInput.java:941)
    at javax.faces.component.UIInput.executeValidate(UIInput.java:1189)
    at javax.faces.component.UIInput.processValidators(UIInput.java:691)
    at javax.faces.component.UIForm.processValidators(UIForm.java:243)
    at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1080)
    at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1080)
    at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1180)
    at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
    at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
    at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
    at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
    at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
    at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
    at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
    at java.lang.Thread.run(Thread.java:662)
Caused by: java.sql.SQLSyntaxErrorException: Table/View 'BUYER' does not exist.
    at org.apache.derby.client.am.SQLExceptionFactory40.getSQLException(Unknown Source)
    at org.apache.derby.client.am.SqlException.getSQLException(Unknown Source)
    at org.apache.derby.client.am.Connection.prepareStatement(Unknown Source)
    at com.sun.gjc.spi.base.ConnectionHolder.prepareStatement(ConnectionHolder.java:535)
    at com.sun.gjc.spi.jdbc40.ConnectionWrapper40.prepareCachedStatement(ConnectionWrapper40.java:251)
    at com.sun.gjc.spi.jdbc40.ConnectionWrapper40.prepareCachedStatement(ConnectionWrapper40.java:48)
    at com.sun.gjc.spi.ManagedConnection.prepareCachedStatement(ManagedConnection.java:880)
    at com.sun.gjc.spi.jdbc40.ConnectionWrapper40.prepareStatement(ConnectionWrapper40.java:169)
    at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.prepareStatement(DatabaseAccessor.java:1404)
    at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.prepareStatement(DatabaseAccessor.java:1353)
    at org.eclipse.persistence.internal.databaseaccess.DatabaseCall.prepareStatement(DatabaseCall.java:645)
    at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:580)
    ... 99 more
Caused by: org.apache.derby.client.am.SqlException: Table/View 'BUYER' does not exist.
    at org.apache.derby.client.am.Statement.completeSqlca(Unknown Source)
    at org.apache.derby.client.net.NetStatementReply.parsePrepareError(Unknown Source)
    at org.apache.derby.client.net.NetStatementReply.parsePRPSQLSTTreply(Unknown Source)
    at org.apache.derby.client.net.NetStatementReply.readPrepareDescribeOutput(Unknown Source)
    at org.apache.derby.client.net.StatementReply.readPrepareDescribeOutput(Unknown Source)
    at org.apache.derby.client.net.NetStatement.readPrepareDescribeOutput_(Unknown Source)
    at org.apache.derby.client.am.Statement.readPrepareDescribeOutput(Unknown Source)
    at org.apache.derby.client.am.PreparedStatement.readPrepareDescribeInputOutput(Unknown Source)
    at org.apache.derby.client.am.PreparedStatement.flowPrepareDescribeInputOutput(Unknown Source)
    at org.apache.derby.client.am.PreparedStatement.prepare(Unknown Source)
    at org.apache.derby.client.am.Connection.prepareStatementX(Unknown Source)
    ... 109 more

这里是错误指出导致问题的 EJB:

@Stateless(name = "ejbs/BuyersRegistratorEJB")
public class BuyersRegistratorEJB implements IBuyersRegistratorEJB {
  @PersistenceContext
  private EntityManager em;

  @Override
  public Buyer createBuyer(Buyer buyer) {
    Date date = new Date();
    DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");
    buyer.setRegistrationDate(dateFormat.format(date));

    boolean textPatterCorrect = false;
    // TODO: Prepare regular expresion also for serbian latin characters
    String simpleTextPatternText = "^[a-zA-Z0-9]+$";
    Pattern textPattern = null;
    Matcher nameMatcher = null;
    Matcher secondNameMatcher = null;
    Matcher nickNameMatcher = null;
    Matcher passwordMatcher = null;

    textPattern = Pattern.compile(simpleTextPatternText);
    nameMatcher = textPattern.matcher(buyer.getName());
    secondNameMatcher = textPattern.matcher(buyer.getSecondName());
    nickNameMatcher = textPattern.matcher(buyer.getNickName());
    passwordMatcher = textPattern.matcher(buyer.getPassword());

    if (nameMatcher.matches() && secondNameMatcher.matches()
        && nickNameMatcher.matches() && passwordMatcher.matches()) {
      textPatterCorrect = true;
    } else {
      System.out
          .println("SOME OF THE INPUT DO NOT MATCH THE REGULAR EXPRESION FOR TEXT!");
    }

    if (textPatterCorrect) {
      em.persist(buyer);// EJB validation passed. Handle the input to the
                // next layer.
      return buyer;
    } else {
      throw new RuntimeException(
          "[BuyersRegistrationEJB] Text format validation FAILED!");
    }
  }

  // This will check if the email already exists!
  @Override
  public boolean emailAlreadyExists(String value) {
    Query checkEmailExists = em
        .createQuery("SELECT COUNT(b.email) FROM Buyer b WHERE b.email=:emailparam");
    checkEmailExists.setParameter("emailparam", value);
    long matchCounter = 0;
    matchCounter = (Long) checkEmailExists.getSingleResult();
    if (matchCounter > 0) {
      return true;
    }
    return false;
  }

  // This will check if the nickName already exists!
  @Override
  public boolean nickNameAlreadyExists(String value) {
    Query nickNameExists = em.createQuery("SELECT COUNT(n.nickName) FROM Buyer n WHERE n.nickName=:nicknameparam");
    nickNameExists.setParameter("nicknameparam", value);
    long matchCounter = 0;
    matchCounter = (Long) nickNameExists.getSingleResult();
    if (matchCounter > 0) {
      return true;
    }
    return false;
  }
}

我也会发布我的配置文件:

太阳资源.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE resources PUBLIC "-//Sun Microsystems, Inc.//DTD Application Server 9.0   Resource Definitions //EN" "http://www.sun.com/software/appserver/dtds/sun-resources_1_3.dtd">
<resources>
  <jdbc-resource enabled="true" jndi-name="jdbc/myDatasource" object-type="user" pool-name="Derby_groupbuydb_userPool"/>

  <jdbc-connection-pool allow-non-component-callers="false" associate-with-thread="false" connection-creation-retry-attempts="0" connection-creation-retry-interval-in-seconds="10" connection-leak-reclaim="false" connection-leak-timeout-in-seconds="0" connection-validation-method="auto-commit" datasource-classname="org.apache.derby.jdbc.ClientDataSource" fail-all-connections="false" idle-timeout-in-seconds="300" is-connection-validation-required="false" is-isolation-level-guaranteed="true" lazy-connection-association="false" lazy-connection-enlistment="false" match-connections="false" max-connection-usage-count="0" max-pool-size="32" max-wait-time-in-millis="60000" name="Derby_groupbuydb_userPool" non-transactional-connections="false" pool-resize-quantity="2" res-type="javax.sql.DataSource" statement-timeout-in-seconds="-1" steady-pool-size="8" validate-atmost-once-period-in-seconds="0" wrap-jdbc-objects="false">
    <property name="serverName" value="localhost"/>
    <property name="PortNumber" value="1527"/>
    <property name="DatabaseName" value="groupbuydb"/>
    <property name="User" value="user"/>
    <property name="Password" value="pwd"/>
    <property name="URL" value="jdbc:derby://localhost:1527/groupbuydb;create=true"/>
    <property name="driverClass" value="org.apache.derby.jdbc.ClientDriver"/>
  </jdbc-connection-pool>
</resources>

持久性.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
  <persistence-unit name="GroupBuySystem">
    <jta-data-source>jdbc/myDatasource</jta-data-source>
    <class>entities.Administ</class>
    <class>entities.Buyer</class>
    <class>entities.Comment</class>
    <class>entities.Log</class>
    <class>entities.Offer</class>
    <class>entities.Seller</class>
  </persistence-unit>
</persistence>

这在 3 周前一切正常，但现在不行了。我不知道出了什么问题。

Answer 1

有几个可能的原因:

1. 您的表已被删除
2. 您的凭据无法再看到或访问它
3. 您的凭据已更改
4. 您的配置已损坏或更改
5. 您正在查看错误的数据库或类似的东西。

您需要按顺序明确排除每一项，然后您将得到答案。很可能是其中之一:)