Не удалось выполнить запрос спящего режима

Question

У меня есть класс сущностей, как определено ниже:

@Entity 
@Table(name="user") 
public class User implements Serializable{ 

    @Id 
    @GeneratedValue(strategy=GenerationType.IDENTITY) 
    private int id; 

    @NotNull 
    @Column(name="email",nullable=false) 
    @Size(min=5,max=15,message="Min 5 and Max 15") 
    private String email; 

    @NotNull 
    @Column(name="password",nullable=false) 
    @Size(min=5,max=15,message="Min 5 and Max 15") 
    private String password; 

    public int getId() { 
     return id; 
    } 
    public void setId(int id) { 
     this.id = id; 
    } 
    public String getEmail() { 
     return email; 
    } 
    public void setEmail(String email) { 
     this.email = email; 
    } 
    public String getPassword() { 
     return password; 
    } 
    public void setPassword(String password) { 
     this.password = password; 
    } 
} 

Я создаю запрос SQL с помощью HQL следующим образом:

Query query = getSession().createSQLQuery("FROM User u where u.email = :email"); 
query.setString("email", username); 
query.list(); 

Получение следующие исключения при вызове query.list()

Caused by: org.hibernate.exception.SQLGrammarException: could not extract ResultSet 
    at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:80) 
    at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49) 
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126) 
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112) 
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:91) 
    at org.hibernate.loader.Loader.getResultSet(Loader.java:2066) 
    at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1863) 
    at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1839) 
    at org.hibernate.loader.Loader.doQuery(Loader.java:910) 
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:355) 
    at org.hibernate.loader.Loader.doList(Loader.java:2554) 
    at org.hibernate.loader.Loader.doList(Loader.java:2540) 
    at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2370) 
    at org.hibernate.loader.Loader.list(Loader.java:2365) 
    at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:353) 
    at org.hibernate.internal.SessionImpl.listCustomQuery(SessionImpl.java:1873) 
    at org.hibernate.internal.AbstractSessionImpl.list(AbstractSessionImpl.java:311) 
    at org.hibernate.internal.SQLQueryImpl.list(SQLQueryImpl.java:141) 
    at com.revechat.spring.authentication.dao.UserDaoImpl.findByUserName(UserDaoImpl.java:25) 
    at com.revechat.spring.authentication.service.UserServiceImpl.findByUserName(UserServiceImpl.java:26) 
    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:317) 
    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$1.proceedWithInvocation(TransactionInterceptor.java:99) 
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281) 
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) 
    at com.sun.proxy.$Proxy39.findByUserName(Unknown Source) 
    at com.revechat.spring.authentication.service.UserAuthDetailService.loadUserByUsername(UserAuthDetailService.java:30) 
    at org.springframework.security.authentication.dao.DaoAuthenticationProvider.retrieveUser(DaoAuthenticationProvider.java:102) 
    ... 42 more 
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FROM User u where u.email = ''' at line 1 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) 
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) 
    at java.lang.reflect.Constructor.newInstance(Unknown Source) 
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:377) 
    at com.mysql.jdbc.Util.getInstance(Util.java:360) 
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:978) 
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3887) 
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3823) 
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2435) 
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2582) 
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2530) 
    at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1907) 
    at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2030) 
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:82) 
    ... 72 more 

В чем может быть проблема?

Answer 1

Sql запрос должен иметь весь синтаксис SQL и запрос, который вы используете HQL запрос

ваш запрос должен быть как

вы можете сделать getSession().createQuery("FROM User u where u.email = :email"); или select * from <tableName> alias where email = ?