Ich arbeite in einem Schulprojekt, wo ich im Backend mit Java/Spring/Hibernate arbeite. Während der Arbeit mit der Datenbankanforderung ist dieser Fehler aufgetreten. Ich kann es anscheinend nicht lösen. Ich habe versucht, Parameter bei 1 zu starten, aber es ist der gleiche Fehler. Danke für Ihre Hilfe!verschachtelte Ausnahme ist java.lang.IllegalArgumentException: Keine Positionsparameter in Abfrage
Etat HTTP 500 - Anfrage Verarbeitung fehlgeschlagen; verschachtelte Ausnahme ist java.lang.IllegalArgumentException: Keine Positionsparameter in der Abfrage: FROM fr.netrust.model.User WHERE username =? UND Passwort =?
model.User
@Entity
@Table(name="user")
public class User implements Serializable {
private static final long serialVersionIUD = 1L;
@Id
@Column(name="id")
@GeneratedValue(strategy=GenerationType.IDENTITY)
private long id;
private String username;
private String password;
public User() {
super();
}
public User(String username, String password) {
super();
this.username = username;
this.password = password;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getUsername() {
return this.username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return this.password;
}
public void setPassword(String password) {
this.password = password;
}
}
UserDto
package fr.netrust.dto;
public class UserDto {
private long id;
private String username;
private String password;
public UserDto() {
}
public UserDto(long id, String username, String password) {
super();
id = this.id;
username = this.username;
password = this.password;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
UserDaoImpl
package fr.netrust.dao.impl;
@Repository
@Transactional
public class UserDaoImpl implements UserDao {
@Autowired
private SessionFactory sessionFactory;
@Override
@Transactional(readOnly=true)
public int isValidUser(String username, String password) {
Session session = sessionFactory.openSession();
Transaction tx = session.beginTransaction();
Query sql = session.createQuery("FROM fr.netrust.model.User WHERE username=? AND password=?");
sql.setString(0, username);
sql.setString(1, password);
User result = (User) sql.uniqueResult();
tx.commit();
session.flush();
session.close();
return (int) (result==null?0:result.getId());
}
Usercontroller
package fr.netrust.web;
@Controller
public class UserController {
@Autowired
private UserDao userDao;
@Autowired
private UserDaoAdapter userDaoAdpter;
@RequestMapping(value = "/log", method = RequestMethod.GET)
@ResponseBody
public int log(HttpServletRequest req) throws SQLException {
return userDao.isValidUser(req.getParameter("username"), req.getParameter("password"));
}
}
datasource.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd">
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://127.0.0.1:3306/NeTrust"></property>
<property name="username" value="descartes" />
<property name="password" value="descartes" />
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="fr.netrust.web" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.show_sql">false</prop>
</props>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/pages/" p:suffix=".jsp"/>
</beans>
[EDIT]
@Override
@Transactional
public int isValidUser(String username, String password) {
Session session = sessionFactory.openSession();
Transaction tx = session.beginTransaction();
Query sql = session.createQuery("FROM fr.netrust.model.User U WHERE U.username = :username AND U.password = :password");
sql.setParameter("username", username);
sql.setParameter("password", password);
User result = (User) sql.uniqueResult();
tx.commit();
session.flush();
session.close();
return (int) (result==null?0:result.getId());
}
Haben Sie Ihre [Mapping] aktualisiert (http://stackoverflow.com/questions/20610221/illegalargumentexceptionno-positional-parameters-in-query)? –
Ich habe keine Hibernate-Conf-Datei. Aber mein Kumpel gab mir eine Bean-Datei mit einer Ruhezustandskonfiguration. –