Hibernate first hql query ... error

Question

Я искал this tutorial, чтобы узнать, используя спящий режим. Все работы с sakila db.

Теперь я пытаюсь применить эти знания к моей БД, но когда я пытаюсь запустить HQL Query (просто «от пользователя»), я получаю сообщение об ошибке:

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:89) 
at org.hibernate.loader.Loader.getResultSet(Loader.java:2065) 
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1862) 
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1838) 
at org.hibernate.loader.Loader.doQuery(Loader.java:909) 
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:354) 
at org.hibernate.loader.Loader.doList(Loader.java:2551) 
at org.hibernate.loader.Loader.doList(Loader.java:2537) 
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2367) 
at org.hibernate.loader.Loader.list(Loader.java:2362) 
at org.hibernate.hql.internal.classic.QueryTranslatorImpl.list(QueryTranslatorImpl.java:939) 
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:229) 
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1260) 
at org.hibernate.internal.QueryImpl.list(QueryImpl.java:103) 
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'from limit 100' at line 1 
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) 
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) 
at java.lang.reflect.Constructor.newInstance(Constructor.java:526) 
at com.mysql.jdbc.Util.handleNewInstance(Util.java:404) 
at com.mysql.jdbc.Util.getInstance(Util.java:387) 
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:939) 
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3878) 
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3814) 
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2478) 
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2625) 
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2551) 
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1861) 
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1962) 
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:80) 
... 15 more 

это то же самое если я написал строчку в учебнике («из фильма» вместо «из фильма»).

User.java

package model.pojos; 
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.JoinTable; 
import javax.persistence.ManyToMany; 
import javax.persistence.ManyToOne; 
import javax.persistence.OneToMany; 
import javax.persistence.Table; 

/** 
* User generated by hbm2java 
*/ 
@Entity 
@Table(name="user" 
    ,catalog="mywheel" 
) 
public class User implements java.io.Serializable { 
private Integer oid; 
private UserType userType; 
private String username; 
private String password; 
private String email; 
private String address; 
private Set<Comments> commentses = new HashSet<Comments>(0); 
private Set<Orthopedy> orthopedies = new HashSet<Orthopedy>(0); 
private Set<Multimedia> multimedias = new HashSet<Multimedia>(0); 
private Set<Wheelchair> wheelchairs = new HashSet<Wheelchair>(0); 
private Set<Wheelchair> wheelchairs_1 = new HashSet<Wheelchair>(0); 

public User() { 
} 


public User(UserType userType, String username, String password, String email) { 
    this.userType = userType; 
    this.username = username; 
    this.password = password; 
    this.email = email; 
} 
public User(UserType userType, String username, String password, String email, String address, Set<Comments> commentses, Set<Orthopedy> orthopedies, Set<Multimedia> multimedias, Set<Wheelchair> wheelchairs, Set<Wheelchair> wheelchairs_1) { 
    this.userType = userType; 
    this.username = username; 
    this.password = password; 
    this.email = email; 
    this.address = address; 
    this.commentses = commentses; 
    this.orthopedies = orthopedies; 
    this.multimedias = multimedias; 
    this.wheelchairs = wheelchairs; 
    this.wheelchairs_1 = wheelchairs_1; 
} 

@Id @GeneratedValue(strategy=IDENTITY) 


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

public void setOid(Integer oid) { 
    this.oid = oid; 
} 

@ManyToOne(fetch=FetchType.LAZY) 
    @JoinColumn(name="user_type_oid", nullable=false) 
    public UserType getUserType() { 
     return this.userType; 
    } 


public void setUserType(UserType userType) { 
    this.userType = userType; 
} 


@Column(name="username", nullable=false, length=15) 
public String getUsername() { 
    return this.username; 
} 

public void setUsername(String username) { 
    this.username = username; 
} 


@Column(name="password", nullable=false, length=15) 
public String getPassword() { 
    return this.password; 
} 

public void setPassword(String password) { 
    this.password = password; 
} 


@Column(name="email", nullable=false, length=30) 
public String getEmail() { 
    return this.email; 
} 

public void setEmail(String email) { 
    this.email = email; 
} 


@Column(name="address", length=50) 
public String getAddress() { 
    return this.address; 
} 

public void setAddress(String address) { 
    this.address = address; 
} 

@OneToMany(fetch=FetchType.LAZY, mappedBy="user") 
    public Set<Comments> getCommentses() { 
     return this.commentses; 
    } 

public void setCommentses(Set<Comments> commentses) { 
    this.commentses = commentses; 
} 

@OneToMany(fetch=FetchType.LAZY, mappedBy="user") 

public Set<Orthopedy> getOrthopedies() { 
    return this.orthopedies; 
} 

public void setOrthopedies(Set<Orthopedy> orthopedies) { 
    this.orthopedies = orthopedies; 
} 

@OneToMany(fetch=FetchType.LAZY, mappedBy="user") 

public Set<Multimedia> getMultimedias() { 
    return this.multimedias; 
} 

public void setMultimedias(Set<Multimedia> multimedias) { 
    this.multimedias = multimedias; 
} 

@ManyToMany(fetch=FetchType.LAZY) 
    @JoinTable(name="favorite", catalog="mywheel", joinColumns = { 
     @JoinColumn(name="user_oid", nullable=false, updatable=false) }, inverseJoinColumns = { 
     @JoinColumn(name="wheelchair_oid", nullable=false, updatable=false) }) 

public Set<Wheelchair> getWheelchairs() { 
    return this.wheelchairs; 
} 

public void setWheelchairs(Set<Wheelchair> wheelchairs) { 
    this.wheelchairs = wheelchairs; 
} 

@ManyToMany(fetch=FetchType.LAZY) 
    @JoinTable(name="own", catalog="mywheel", joinColumns = { 
     @JoinColumn(name="user_oid", nullable=false, updatable=false) }, inverseJoinColumns = { 
     @JoinColumn(name="wheelchair_oid", nullable=false, updatable=false) }) 

public Set<Wheelchair> getWheelchairs_1() { 
    return this.wheelchairs_1; 
} 

public void setWheelchairs_1(Set<Wheelchair> wheelchairs_1) { 
    this.wheelchairs_1 = wheelchairs_1; 
} 




} 

hibernate.config.xml

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> 
<hibernate-configuration> 
    <session-factory> 
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> 
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> 
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/mywheel?zeroDateTimeBehavior=convertToNull</property> 
    <property name="hibernate.connection.username">root</property> 
    <property name="hibernate.show_sql">true</property> 
    <property name="hibernate.current_session_context_class">thread</property> 
    <property name="hibernate.query.factory_class">org.hibernate.hql.internal.classic.ClassicQueryTranslatorFactory</property> 
    <property name="hibernate.connection.autocommit">true</property> 
    <mapping class="model.pojos.User"/> 
    <mapping class="model.pojos.Multimedia"/> 
    <mapping class="model.pojos.Brand"/> 
    <mapping class="model.pojos.Permissions"/> 
    <mapping class="model.pojos.Feature"/> 
    <mapping class="model.pojos.Comments"/> 
    <mapping class="model.pojos.FeatureType"/> 
    <mapping class="model.pojos.MultimediaType"/> 
    <mapping class="model.pojos.Wheelchair"/> 
    <mapping class="model.pojos.Material"/> 
    <mapping class="model.pojos.Orthopedy"/> 
    <mapping class="model.pojos.UserType"/> 
    <mapping class="model.pojos.FrameType"/> 
    </session-factory> 
</hibernate-configuration> 

SQL таблица

CREATE TABLE IF NOT EXISTS `mywheel`.`user` (
    `oid` INT(11) NOT NULL AUTO_INCREMENT, 
    `username` CHAR(15) NOT NULL, 
    `password` CHAR(15) NOT NULL, 
    `email` CHAR(30) NOT NULL, 
    `address` VARCHAR(50) NULL, 
    `user_type_oid` INT NOT NULL, 
    PRIMARY KEY (`oid`), 
    INDEX `fk_user_user_type1_idx` (`user_type_oid` ASC), 
    CONSTRAINT `fk_user_user_type1` 
    FOREIGN KEY (`user_type_oid`) 
    REFERENCES `mywheel`.`user_type` (`oid`) 
    ON DELETE NO ACTION 
    ON UPDATE NO ACTION) 
ENGINE = InnoDB 
AUTO_INCREMENT = 3 
DEFAULT CHARACTER SET = latin1; 

Я использую Anno но у меня есть такая же проблема с отображением xml.

UPDATE Небрежно я изменил путь моего проекта в другой раздел ... так что теперь у меня есть C: ... \ приложение и D: ... \ приложение.

в NetBeans первый проект (в C :) дайте мне ошибку я уже писал ... вторую (D :) возвращает другую ошибку:

org.hibernate.AnnotationException: Use of @OneToMany or @ManyToMany targeting an unmapped class: model.pojos.Wheelchair.materials[model.pojos.Material] 
at org.hibernate.cfg.annotations.CollectionBinder.bindManyToManySecondPass(CollectionBinder.java:1134) 
at org.hibernate.cfg.annotations.CollectionBinder.bindStarToManySecondPass(CollectionBinder.java:793) 
at org.hibernate.cfg.annotations.CollectionBinder$1.secondPass(CollectionBinder.java:728) 
at org.hibernate.cfg.CollectionSecondPass.doSecondPass(CollectionSecondPass.java:70) 
at org.hibernate.cfg.Configuration.originalSecondPassCompile(Configuration.java:1695) 
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1424) 
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1844) 
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1928) 

или ... XML отображение без аннотации

org.hibernate.MappingException: An association from the table wc_material refers to an unmapped class: model.pojos.Material 
at org.hibernate.cfg.Configuration.secondPassCompileForeignKeys(Configuration.java:1805) 
at org.hibernate.cfg.Configuration.originalSecondPassCompile(Configuration.java:1739) 
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1424) 
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1844) 
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1928) 

Возможно, это зависит от раздела, где установлен XAMPP (D :)? я не думаю, что так ... потому что Sakila дб отлично работает в C: ...

в этом случае погрешность составляет около неподключенного класса ... но в hibernate.reveng.xml я добавил все таблицы из моей БД, но не создавать все классы

hibernate.reveng.xml and generated classes

Answer 1

сообщение об ошибке довольно ясно: from limit 100

Вы упускаете таблицу, чтобы выбрать из в запросе.

...from `YourTable` limit 100

Но разместить запрос будет, безусловно, поможет тоже.

Answer 2

Корневая случай:

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'from limit 100' at line 1 

Укажите имя таблицы, что вы забирающий с. Кажется, вы пропустили это.

Также попробуйте изменить диалоги MySQL в конфигурациях hibernate.

Использование

<property name="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</property> 

вместо

<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> 

Примечание: Следует быть осторожным имя таблицы в hibernate.cfg.xml файла, как это должно быть одинаковым в запросе (чувствительно к регистру) ,

Answer 3

Это случилось со мной, вам нужно очистить и построить проект, щелкнув по нему правой кнопкой мыши