[英]Hibernate doesn't update record in MySQL database
我在我的應用程序中使用PrimeFaces 3.5
, JSF 2.2
, Hibernate 4.1
, Spring 3.2.3
, MySQL
。 函數updateUser()應該為PrimeFaces dataTable組件(值正確)中的所選用戶更新數據庫中的記錄,但由於某些未知原因,它不會。 我有一個名為AbstractDAO的類,該類通過泛型實現CRUD操作。 插入,選擇和刪除可以完美地工作,但是更新失敗,完全沒有顯示任何錯誤。 任何提示我的代碼有什么問題嗎?
applicationContext.xml中:
<?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:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:sec="http://www.springframework.org/schema/security"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.1.xsd">
<!-- GLOABL SETTINGS -->
<context:component-scan base-package="com.infostroy.adminportal"/>
<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/>
<!-- DATA SOURCE AND PERSISTENCE SETTINGS -->
<bean id="propertiesPlaceholderConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:db.properties</value>
</list>
</property>
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dmDataSource"/>
<property name="packagesToScan" value="com.infostroy.adminportal"/>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${db.dialect}</prop>
<prop key="hibernate.show_sql">${db.show_sql}</prop>
<prop key="hibernate.hbm2ddl.auto">${db.hbm2ddl_auto}</prop>
<prop key="connection.pool_size">${db.pool_size}</prop>
<prop key="current_session_context_class">${db.current_session_context_class}</prop>
<prop key="org.hibernate.FlushMode">${db.flush_mode}</prop>
</props>
</property>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="dataSource" ref="dmDataSource" />
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<bean id="dmDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${db.driver}" />
<property name="url" value="${db.url}" />
<property name="username" value="${db.username}" />
<property name="password" value="${db.password}" />
<property name="maxWait" value="5000" />
<property name="initialSize" value="2" />
<property name="maxActive" value="100"/>
<property name="maxIdle" value="50"/>
<property name="minIdle" value="0"/>
</bean>
</beans>
db.properties:
db.username=root
db.password=root
db.driver=com.mysql.jdbc.Driver
db.url=jdbc:mysql://localhost/adminportal
db.pool_size=0
db.dialect=org.hibernate.dialect.MySQLDialect
db.hbm2ddl_auto=validate
db.show_sql=true
db.current_session_context_class=thread
db.flush_mode=COMMIT
AbstractDao的:
public abstract class AbstractDAO<T extends Serializable> implements Serializable {
@Autowired
protected SessionFactory sessionFactory;
protected T object;
protected Class clazz;
public AbstractDAO(Class clazz) {
this.clazz = clazz;
}
//Executes before being removed from container
@PreDestroy
protected void destroy() {
sessionFactory.getCurrentSession().close();
}
public Session getHiberSession() {
return sessionFactory.openSession();
}
@Transactional
protected T getByID(int id) {
String queryString = "from " + clazz.getSimpleName() + " where id = :id";
Query query = getHiberSession().createQuery(queryString);
query.setInteger("id", id);
object = (T) query.uniqueResult();
return object;
}
@Transactional
protected int deleteByID(int id) {
String queryString = "delete " + clazz.getSimpleName() + " where id = :id";
Query query = getHiberSession().createQuery(queryString);
query.setInteger("id", id);
return query.executeUpdate();
}
@Transactional
protected boolean insert(T object) {
try {
getHiberSession().save(object);
return true;
} catch (HibernateException ex) {
return false;
}
}
@Transactional
protected boolean update(T object) {
try {
getHiberSession().saveOrUpdate(object);
return true;
} catch (HibernateException ex) {
return false;
}
}
@Transactional
protected List getAllRecords() {
String queryString = "from " + clazz.getSimpleName();
Query query = getHiberSession().createQuery(queryString);
return query.list();
}
}
UserDAO.java:
@Repository
public class UserDAO extends AbstractDAO<User> {
public UserDAO() {
super(User.class);
}
public User getUserById(int id) {
return super.getByID(id);
}
public int deleteUserById(int id) {
return super.deleteByID(id);
}
public boolean insertUser(User user) {
return super.insert(user);
}
public boolean updateUser(User user) {
return super.update(user);
}
public List<User> getAllUsers() {
return super.getAllRecords();
}
}
如果您需要任何其他信息或代碼-告訴我。 每個答案都受到高度贊賞,並得到迅速回應。
謝謝。
我只是從Hibernate開始,但是我使用的是sessionFactory.getCurrentSession()而不是openSession()。
在saveOrUpdate()方法之后,只需刷新會話即可。 例如:session.flush();
有關更多詳細信息,您可以在這里查看我的博客:
http://www.onlinetutorialspoint.com/hibernate/hibernate-example.html
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