使用SSH框架时，找不到sessionFactory

[maaaa5566]

在使用SSH框架的时候，运行时遇到这么一个错：Property 'sessionFactory' is required
我猜测是配置有问题，但不知道错在哪。
异常信息：
Messages: Property 'sessionFactory' is required
File: org/springframework/orm/hibernate3/HibernateAccessor.java
Line number: 314

Eclipse下 Struts2.3 + Spring3.0 + Hibernate3.6 ，这是导入的jar包：


applicationContext.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"  
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
       xsi:schemaLocation="http://www.springframework.org/schema/beans   
                           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
		<property name="driverClass" value="com.microsoft.sqlserver.jdbc.SQLServerDriver"/>
		<property name="jdbcUrl" value="jdbc:sqlserver://localhost:1433;databaseName=test"></property>
		<property name="user" value="sa"></property>
		<property name="password" value="123"></property>
	</bean>
	<!-- Hibernate sessionFactory创建 -->
	<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource" ref="dataSource"></property>
		<!-- Hibernate属性 -->
		<property name="hibernateProperties">
			<props>
			<prop key="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</prop>
			<prop key="hibernate.show_sql">true</prop> 
			</props>
		</property>
		<!-- 映射文件 -->
		<property name="mappingResources">
		<list>
                  <value>../User.hbm.xml</value>
                </list>
        </property>
	</bean>
	
	<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
		<constructor-arg>
			<ref local="sessionFactory" />
		</constructor-arg>
	</bean>
    <bean id="transactionManager"
            class="org.springframework.orm.hibernate3.HibernateTransactionManager">
    	<property name="sessionFactory" ref="sessionFactory"/>
    </bean>
    <bean id="userDao" class="com.test.dao.impl.UserDaoImpl" scope="prototype">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>
    <bean id="registerAction" class="com.test.actions.RegisterAction" scope="prototype">
        <property name="ud" ref="userDao"></property>
    </bean>
</beans>

UserDaoImpl.java

package com.test.dao.impl;

import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate3.HibernateTemplate;

import com.test.entity.vo.User;
import com.test.interfaces.UserDao;

public class UserDaoImpl implements UserDao{

	private HibernateTemplate hibernateTemplate = null;
	private SessionFactory sessionFactory ;
	
	public SessionFactory getSessionFactory() {
		return sessionFactory;
	}

	public void setSessionFactory(SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}

	public HibernateTemplate getHibernateTemplate() {
		if(hibernateTemplate == null){
			hibernateTemplate = new HibernateTemplate(sessionFactory);
		}
		return hibernateTemplate;
	}
	
	@Override
	public Long addUser(User user) {
		// TODO Auto-generated method stub
		return (Long)getHibernateTemplate().save(user);
	}
}

RegisterAction.java

package com.test.actions;

import com.opensymphony.xwork2.ActionSupport;
import com.test.dao.impl.UserDaoImpl;
import com.test.entity.vo.User;
import com.test.interfaces.UserDao;

public class RegisterAction extends ActionSupport{
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private String username;
	private String password;
	private UserDao ud = new UserDaoImpl();
	
	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;
	}
	public UserDao getUd() {
		return ud;
	}
	public void setUd(UserDao ud) {
		this.ud = ud;
	}
	
	public String execute() throws Exception{
		User user = new User();
		user.setUsername(username);
		user.setPassword(password);
		ud.addUser(user);
		return SUCCESS;
	}
}

[twqllq98849577]

让userDaoImpl继承HibernateDaoSupport public class userDaoImpl extends HibernateDaoSupport 再注入sessionfactory

[桃园闲人]

Dao 要继承 HibernateDaoSupport类。

[Fly_m]

private UserDao ud = new UserDaoImpl(); public UserDao getUd() { return ud; } public void setUd(UserDao ud) { this.ud = ud; } 修改为 private UserDao userDao;//这里一定不要使用 new UserDaoImpl() public void setUserDao(UserDao userDao) { xxxxx } xxxGetUserDao

[s478853630]

package com.unite.dao.impl;

import java.io.Serializable;
import java.lang.reflect.ParameterizedType;
import java.util.ArrayList;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.hibernate3.SessionFactoryUtils;
import com.unite.dao.BaseDao;
import com.unite.dao.PageDao;
import com.unite.entity.PageModel;

/**
 * @see 访问数据库的基类dao实现类
 * @version 1.0
 * */
public abstract class BaseDaoImpl<T extends Serializable> extends PageDao implements BaseDao<T>  {
	
	@Autowired
	private SessionFactory sessionFactory;
	private Session session;
	
	// 保存记录
	public T add(T entity) {
		getSession().save(entity);
		return entity;
	}
	
	// 修改记录
	public T edit(T entity) {
		getSession().update(entity);
		return entity;
	}

	// 删除记录
	public T del(Serializable id) {
		T entity = get(id);
		getSession().delete(entity);
		return entity;
	}

	// 根据ID获得记录
	@SuppressWarnings("unchecked")
	public T get(Serializable id) {
		try {
			return (T) getSession().get(getThisClass(), id);
		} catch (Exception e) {
			return null;
		}
	}
	
	// 获得表中的所有的实体
	@SuppressWarnings("unchecked")
	public List<T> getBeans() {
		String class1 = getThisClass().toString();
		String entity = class1.substring(class1.lastIndexOf(".") + 1);
		return (List<T>) getList("from " + entity + " order by id", null);
	}
	
	// 获得表中的下一个ID的值
	public Long getNextId() {
		Long result = 0l;
		try {
			String class1 = getThisClass().toString();
			String entity = class1.substring(class1.lastIndexOf(".") + 1);
			Object value = getObject("select max(id) from " + entity, null);
			if (null != value) {
				result = Long.parseLong(value.toString()) + 1;
			} else {
				result = 1l;
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;
	}

	/**
	 * @see 从数据库中获得一个实体类的集合或一列值
	 * @param hql hql语句
	 * @param args 参数列表(可以为null)
	 * @return List  不会为null
	 */
	@SuppressWarnings("unchecked")
	public List getList(String hql, Object[] args) {
		try {
			return getQuery(hql, args).list();
		} catch (Exception e) {
			e.printStackTrace();
			return new ArrayList();
		}
	}

	/**
	 * @see 从数据库中获得一个实体或一个值
	 * @param hql hql语句
	 * @param args 参数列表(可以为null)
	 * @return Object
	 */
	@SuppressWarnings("unchecked")
	public Object getObject(String hql, Object[] args) {
		List list = getList(hql, args);
		if (list.size() > 0) {
			return list.get(0);
		}
		return null;
	}

	/**
	 * @see 判断真假(数据库是否有这个记录)
	 * @param hql hql语句必须是select count(*) from ...
	 * @param args 参数列表(可以为null)
	 * @return Boolean
	 */
	public Boolean validate(String hql, Object[] args) {
		try {
			Object value = getObject(hql, args);
			if (null != value && Integer.parseInt(value.toString()) > 0) {
				return true;
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return false;
	}

	/**
	 * @see 获得分页
	 * @param hql hql语句必须是select * from ...或者from ...
	 * @param args 参数列表(可以为null)
	 * @param pageIndex 当前页数
	 * @param radix 分页的基数
	 * @return PageModel
	 * */
	public PageModel getPage(String hql, Object[] args, int pageIndex, int radix) {
		try {
			String countHql = "";
			if (hql.indexOf("*") != -1) {
				countHql = hql.replace("*", "count(*)");
			} else {
				countHql = "select count(*) " + hql;
			}
			Integer amount = Integer.parseInt(getObject(countHql, args).toString());
			PageModel model = getPageModel(amount, pageIndex, radix, radix);
			Query query = getQuery(hql, args);
			query.setFirstResult(model.getStart());
			query.setMaxResults(radix);
			model.setList(query.list());
			return model;
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}
	
	/**
	 * @see 其他操作(增删改返回受影响的行数)
	 * @param hql hql语句
	 * @param args 参数列表(可以为null)
	 * @return Object
	 */
	public Integer other(String hql, Object[] args) {
		try {
			return getQuery(hql, args).executeUpdate();
		} catch (Exception e) {
			e.printStackTrace();
			return 0;
		}
	}
	
	/**
	 * @see 搜索引擎
	 * @param hql hql语句
	 * @return List
	 */
	@SuppressWarnings("unchecked")
	public List<String> self(String hql) {
		try {
			Query query = getQuery(hql, null);
			query.setFirstResult(0);
			query.setMaxResults(15);
			return query.list();
		} catch (Exception e) {
			e.printStackTrace();
			return new ArrayList<String>();
		}
	}
	
	// 获得session
	private Session getSession() {
		if (null == session) {
			session = SessionFactoryUtils.getSession(sessionFactory, true);
		}
		return session;
	}
	
	// 获得Query
	private Query getQuery(String hql, Object[] args) {
		Query query = getSession().createQuery(hql);
		if (null != args && args.length > 0) {
			for (int i = 0; i < args.length; i++) {
				query.setParameter(i, args[i]);
			}
		}
		return query;
	}

	// 获得class
	@SuppressWarnings("unchecked")
	private Class<T> getThisClass() {
		return (Class<T>) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0];
	}
	
}

package com.unite.dao.impl;

import java.util.List;
import org.springframework.stereotype.Service;
import com.unite.dao.UserDao;
import com.unite.entity.PageModel;
import com.unite.entity.User;

/**
 * @version 1.0
 * 用户的dao接口实现类
 */
@Service
public class UserDaoImpl extends BaseDaoImpl<User> implements UserDao {

	// 用户登录
	public Boolean login(String userName, String password) {
		return validate("select count(*) from User where userName=? and password=?", new Object[]{ userName, password });
	}

	// 所有用户分页查询
	public PageModel getPage(Integer pageIndex, Integer radix) {
		return getPage("from User", null, pageIndex, radix);
	}

	// 更新用户
	public Integer updation(User user) {
		return other("update User set userName=?,password=? where id=?", new Object[]{ user.getUserName(), user.getPassword(), user.getId() });
	}

	// 检索用户名
	public List<String> selfion(String word) {
		return self("select userName from User where userName like '" + word + "%'");
	}

	// 根据用户名获得用户
	public User getUser(String userName) {
		return (User) getObject("from User where userName=?", new Object[]{ userName });
	}
	
}


<?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:jee="http://www.springframework.org/schema/jee" 
		xmlns:tx="http://www.springframework.org/schema/tx" 
		xmlns:context="http://www.springframework.org/schema/context" 
		xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
						http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
						http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
						http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
						http://www.directwebremoting.org/schema/spring-dwr http://www.directwebremoting.org/schema/spring-dwr-3.0.xsd
						" default-lazy-init="true" default-autowire="byName">
	
	<context:component-scan base-package="com.unite" />
	
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
		<property name="driverClass" value="com.mysql.jdbc.Driver" />
		<property name="jdbcUrl" value="jdbc:mysql://localhost/test?characterEncoding=UTF-8" />
		<property name="user" value="root" />
		<property name="password" value="123456" />
		<property name="autoCommitOnClose" value="true" />
		<property name="maxStatements" value="100" />
		<property name="checkoutTimeout" value="5000" />
		<property name="idleConnectionTestPeriod" value="3000" />
		<property name="initialPoolSize" value="3" />
		<property name="minPoolSize" value="3" />
		<property name="maxPoolSize" value="8" />
		<property name="maxIdleTime" value="7200" />
		<property name="acquireIncrement" value="5" />
		<property name="maxIdleTimeExcessConnections" value="1800" />
	</bean>
	
	<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="mappingDirectoryLocations">
			<list>
				<value>classpath:/config/hibernate</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<value>
				hibernate.jdbc.batch_size=30
				hibernate.show_sql=true
				hibernate.format_sql=false
				hibernate.cache.use_query_cache=false
				hibernate.cache.use_second_level_cache=false
				hibernate.dialect=org.hibernate.dialect.MySQLDialect
				<!-- hibernate.hbm2ddl.auto=update -->
			</value>
		</property>
	</bean>

	<tx:annotation-driven transaction-manager="transactionManager" />
	<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>
	
	<!--  -->
	<dwr:configuration />
	<dwr:controller id="dwrController" debug="true" />
	<dwr:url-mapping />
	<dwr:annotation-scan base-package="com.unite" scanRemoteProxy="true" />
	
</beans>

[zxj828282]

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[maaaa5566]

引用 1 楼 twqllq98849577 的回复:

让userDaoImpl继承HibernateDaoSupport public class userDaoImpl extends HibernateDaoSupport 再注入sessionfactory

加上以后，在调用getHibernateTemplate().save(user)时报了异常java.lang.NullPointerException

[dengxiong90]

配置文件里 <bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate"> <constructor-arg> <ref local="sessionFactory" /> </constructor-arg> </bean> 用<property>标签包含“sessionFactory”试试 如果继承了HibernateDaoSupport就可以直接Session session=getSession();貌似就不需要管SessionFactory了

[dengxiong90]

配置文件里 <bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate"> <constructor-arg> <ref local="sessionFactory" /> </constructor-arg> </bean> 用<property>标签包含“sessionFactory”试试 如果继承了HibernateDaoSupport就可以直接Session session=getSession();貌似就不需要管SessionFactory了

[maaaa5566]

引用 6 楼 maaaa5566 的回复:

引用 1 楼 twqllq98849577 的回复: 让userDaoImpl继承HibernateDaoSupport public class userDaoImpl extends HibernateDaoSupport 再注入sessionfactory 加上以后，在调用getHibernateTemplate().save(user)时报了异常java.lang.NullPoin……

终于找到哪里错了，因为我最先用的是struts2，在配置struts.xml时，registerAction的class是com.test.actions.RegisterAction，而后来加入spring以后，需要把这个class和applicationContext.xml里registerAction的id改成一样的。。。问题解决。。。 多谢各位大虾！