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Struts2+spring2+hibernate3整合方案

作者：佚名 编辑： 李宁 2007-12-27 00:00
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applicationContext-dao.xml内容:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd">
<beans>
<!-- 根DAO -->
<bean id="genericDao" class="com.firstssh.common.dao.GenericDao">
    <property name="sessionFactory">
        <ref bean="sessionFactory" />
    </property>
</bean>
<bean id="userDao" class="com.firstssh.dao.impl.UserDao" parent="genericDao" />
</beans>


applicationContext-service.xml内容:

 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd">
<beans>
<bean id="userService" class="com.firstssh.service.impl.UserService">
    <property name="userDao">
        <ref bean="userDao"/>
    </property>
</bean>
<bean id="validateName" class="com.firstssh.common.Bean.ValidateName">
    <property name="userService">
        <ref local="userService"/>
    </property>
</bean>
</beans>


action-servlet.xml内容:

 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd">
<beans>

    <bean id="LoginAction" class="com.firstssh.action.LoginAction"
        scope="prototype">
        <property name="userService" ref="userService" />
    </bean>
    <bean id="RegistAction" class="com.firstssh.action.RegistAction"
        scope="prototype">
        <property name="userService" ref="userService" />
    </bean>
</beans>


以上几个xml文件的内容暂且不要理会，继续往下看，你就自动明白的，不用我解释。
4）日志部分:log4j.properties 、commons-logging.properties
log4j.properties内容:

 

# For JBoss: Avoid to setup Log4J outside $JBOSS_HOME/server/default/deploy/log4j.xml!
# For all other servers: Comment out the Log4J listener in web.xml to activate Log4J.
log4j.rootLogger=INFO, stdout, logfile

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n

log4j.appender.logfile=org.apache.log4j.RollingFileAppender
log4j.appender.logfile.File=${firstssh.root}/WEB-INF/logs/firstssh.log
log4j.appender.logfile.MaxFileSize=512KB
# Keep three backup files.
log4j.appender.logfile.MaxBackupIndex=3
# Pattern to output: date priority [category] - message
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n
# OpenSymphony Stuff
log4j.logger.com.opensymphony=INFO
log4j.logger.org.apache.struts2=INFO
# Spring Stuff
log4j.logger.org.springframework=INFO
# Hibernate Stuff
log4j.logger.org.hiberante=INFO

commons-logging.properties
内容:

org.apache.commons.logging.Log=org.apache.commons.logging.impl.Log4JLogger


5)web.xml

 

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" 
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
 xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" 
 version="2.4">
 <display-name>firstssh</display-name>
 <description>this is a simple example</description>
 <context-param>
  <param-name>webAppRootKey</param-name>
  <param-value>firstssh.root</param-value>
 </context-param>
 
 <context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>/WEB-INF/applicationContext-*.xml,/WEB-INF/action-servlet.xml</param-value>
 </context-param>
 <context-param>
  <param-name>log4jConfigLocation</param-name>
  <param-value>/WEB-INF/log4j.properties</param-value>
 </context-param>
 <listener>
  <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
 </listener>
 <!-- 用于初始化Spring容器的Listener -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
 
 
 <!-- 定义整合SiteMesh必须的ActionContextCleanUp Filter 
 <filter>
  <filter-name>struts-cleanup</filter-name>
  <filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class>
 </filter>-->
 <!-- 定义Struts2的FilterDispathcer的Filter -->
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
    </filter>

   <!--   <filter-mapping>
        <filter-name>struts-cleanup</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>-->
 <!-- FilterDispatcher用来初始化struts2并且处理所有的WEB请求。 -->
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    
   <!-- 这是一个产生验证码的servlet -->
    <servlet>
        <servlet-name>img</servlet-name>
        <servlet-class>com.firstssh.servlet.AuthImg</servlet-class>
    </servlet>
  
    <servlet-mapping>
        <servlet-name>img</servlet-name>
     <url-pattern>/authImg</url-pattern>
    </servlet-mapping>
    <filter>   
        <filter-name>encodingFilter</filter-name>   
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>   
        <init-param>   
            <param-name>encoding</param-name>   
            <param-value>utf-8</param-value>   
        </init-param>   
    </filter>   
    <filter-mapping>   
        <filter-name>encodingFilter</filter-name>   
        <url-pattern>*.action</url-pattern>   
    </filter-mapping>   
    <filter-mapping>   
        <filter-name>encodingFilter</filter-name>   
        <url-pattern>*.jsp</url-pattern>   
    </filter-mapping>
    <filter>   
        <filter-name>hibernateFilter</filter-name>   
        <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>   
    </filter> 
    <filter-mapping>   
        <filter-name>hibernateFilter</filter-name>   
        <url-pattern>*.action</url-pattern>   
    </filter-mapping> 
    
    <!-- DWR Servlet-->
  <servlet>
    <servlet-name>dwr-invoker</servlet-name>
    <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
    <init-param>
      <param-name>debug</param-name>
      <param-value>true</param-value>
    </init-param>
  </servlet>

  <servlet-mapping>
    <servlet-name>dwr-invoker</servlet-name>
    <url-pattern>/dwr/*</url-pattern>
  </servlet-mapping>
  
    <session-config>   
        <session-timeout>10</session-timeout>   
    </session-config> 
    
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <error-page>
    <error-code>401</error-code>
    <location>/401.htm</location>
  </error-page>
  <error-page>
    <error-code>403</error-code>
    <location>/403.htm</location>
  </error-page>
  <error-page>
    <error-code>404</error-code>
    <location>/404.htm</location>
  </error-page>
  <error-page>
    <error-code>500</error-code>
    <location>/500.htm</location>
  </error-page>
</web-app>


 

6)dwr.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN" "http://getahead.org/dwr/dwr20.dtd">

<dwr>
    <!-- 检查用户名是否存在 ValidateName的映射文件-->
    <allow>
      <create  creator="spring" javascript="ValidateName" >
          <param name="beanName" value="validateName"/>
          <include method="valid"/>
      </create>
     </allow>
</dwr>



三、 开始编码:
以下是DAO部分的核心代码:
IGenericDao.java内容如下:

 

/** 
 *
 * @author <a href="mailto:flustar2008@163.com">flustar</a>
 * @version 1.0 
 * Creation date: Dec 23, 2007 6:19:21 PM
 */
package com.firstssh.common.dao;

import java.io.Serializable;
import java.util.Collection;
import java.util.List;

import org.hibernate.LockMode;
import org.hibernate.criterion.DetachedCriteria;
import org.springframework.dao.DataAccessException;

import com.firstssh.common.util.PaginationSupport;

public interface IGenericDao<T, ID extends Serializable>{
    public void saveOrUpdate(T t);
    public T load(Serializable ID);

    public T get(Serializable ID) ;
    
    public boolean contains(T t) throws DataAccessException ;

    public void delete(T t, LockMode lockMode) throws DataAccessException;

    public void delete(T t) throws DataAccessException;
    
    public void deleteAll(Collection<T> entities) throws DataAccessException;
    public List<T> find(String queryString, Object value)
            throws DataAccessException;

    public List<T> find(String queryString, Object[] values)
            throws DataAccessException;

    public List<T> find(String queryString) throws DataAccessException;
    public List<T> findByExample(Object exampleEntity, int firstResult,
            int maxResults) throws DataAccessException;

    public List<T> findByExample(Object exampleEntity) throws DataAccessException;
    public List<T> findByNamedParam(String queryString, String paramName,
            Object value) throws DataAccessException ;

    public List<T> findByNamedParam(String queryString, String[] paramNames,
            Object[] values) throws DataAccessException;

    public Object load(Class TClass, Serializable ID, LockMode lockMode)
            throws DataAccessException;

    public void load(T t, Serializable ID) throws DataAccessException;

    public Object load(String TName, Serializable ID, LockMode lockMode)
            throws DataAccessException;

    public Object load(String TName, Serializable ID)
            throws DataAccessException;

    public void refresh(T t, LockMode lockMode) throws DataAccessException;

    public void refresh(T t) throws DataAccessException;
    public Serializable save(T t) throws DataAccessException;

    public void saveOrUpdate(String TName, T t) throws DataAccessException;

    public void saveOrUpdateAll(Collection<T> entities)
            throws DataAccessException;

    public void update(T t, LockMode lockMode) throws DataAccessException;

    public void update(T t) throws DataAccessException;

    public void update(String TName, T t, LockMode lockMode)
            throws DataAccessException;

    public void update(String TName, T t) throws DataAccessException;

    public List<T> loadAll();
    
    public List<T> list();
    
    public PaginationSupport findPageByCriteria(
            final DetachedCriteria detachedCriteria, final int pageSize,
            final int startIndex);
        
    public  PaginationSupport findPageByQuery( final  String hsql,  final int pageSize,final int startIndex);

}


GenericDao.java内容如下:

/** 
 *
 * @author <a href="mailto:flustar2008@163.com">flustar</a>
 * @version 1.0 
 * Creation date: Dec 23, 2007 11:23:56 PM
 */
package com.firstssh.common.dao;

import java.io.Serializable;
import java.lang.reflect.ParameterizedType;
import java.sql.SQLException;
import java.util.Collection;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Projections;
import org.springframework.dao.DataAccessException;
import org.springframework.orm.hibernate3.HibernateCallback;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.firstssh.common.util.PaginationSupport;
@SuppressWarnings("unchecked")
public class GenericDao<T, ID extends Serializable, DAOImpl extends IGenericDao<T, ID>> extends HibernateDaoSupport implements IGenericDao<T, ID>{
    protected Log logger = LogFactory.getLog(getClass());

    protected Class<T> entityClass;

    public GenericDao() {
        
    }
    protected Class getEntityClass() {
        if (entityClass == null) {
            entityClass = (Class<T>) ((ParameterizedType) getClass()
                    .getGenericSuperclass()).getActualTypeArguments()[0];
            logger.debug("T class = " + entityClass.getName());
        }
        return entityClass;
    }

    public void saveOrUpdate(T t) {
        this.getHibernateTemplate().saveOrUpdate(t);
    }

    public T load(Serializable ID) {

        T load = (T) getHibernateTemplate().load(getEntityClass(), ID);
        return load;
    }

    public T get(Serializable ID) {
        T load = (T) getHibernateTemplate().get(getEntityClass(), ID);
        return load;
    }

    public boolean contains(T t) throws DataAccessException {
        return getHibernateTemplate().contains(t);
    }

    public void delete(T t, LockMode lockMode) throws DataAccessException {
        getHibernateTemplate().delete(t, lockMode);
    }

    public void delete(T t) throws DataAccessException {
        getHibernateTemplate().delete(t);
    
    }
    
    public void deleteAll(Collection<T> entities) throws DataAccessException {
        getHibernateTemplate().deleteAll(entities);
    }
    public List<T> find(String queryString, Object value)
            throws DataAccessException {
        List<T> find = (List<T>) getHibernateTemplate().find(queryString,
                value);
        return find;
    }

    public List<T> find(String queryString, Object[] values)
            throws DataAccessException {
        List<T> find = (List<T>) getHibernateTemplate().find(queryString,
                values);
        return find;
    }

    public List<T> find(String queryString) throws DataAccessException {
        return (List<T>) getHibernateTemplate().find(queryString);
    }

    public List<T> findByExample(Object exampleEntity, int firstResult,
            int maxResults) throws DataAccessException {
        return getHibernateTemplate().findByExample(exampleEntity, firstResult,
                maxResults);
    }

    public List<T> findByExample(Object exampleEntity) throws DataAccessException {
        return getHibernateTemplate().findByExample(exampleEntity);
    }

    public List<T> findByNamedParam(String queryString, String paramName,
            Object value) throws DataAccessException {
        return getHibernateTemplate().findByNamedParam(queryString, paramName,
                value);
    }

    public List<T> findByNamedParam(String queryString, String[] paramNames,
            Object[] values) throws DataAccessException {
        return getHibernateTemplate().findByNamedParam(queryString, paramNames,
                values);
    }

    public Object load(Class TClass, Serializable ID, LockMode lockMode)
            throws DataAccessException {
        return getHibernateTemplate().load(TClass, ID, lockMode);
    }

    public void load(T t, Serializable ID) throws DataAccessException {
        getHibernateTemplate().load(t, ID);
    }

    public Object load(String TName, Serializable ID, LockMode lockMode)
            throws DataAccessException {
        return getHibernateTemplate().load(TName, ID, lockMode);
    }

    public Object load(String TName, Serializable ID)
            throws DataAccessException {
        return getHibernateTemplate().load(TName, ID);
    }

    public void refresh(T t, LockMode lockMode) throws DataAccessException {
        getHibernateTemplate().refresh(t, lockMode);
    }

    public void refresh(T t) throws DataAccessException {
        getHibernateTemplate().refresh(t);
    }

    public Serializable save(T t) throws DataAccessException {
        return getHibernateTemplate().save(t);
    }

    public void saveOrUpdate(String TName, T t) throws DataAccessException {
        getHibernateTemplate().saveOrUpdate(TName, t);
    }

    public void saveOrUpdateAll(Collection<T> entities)
            throws DataAccessException {
        getHibernateTemplate().saveOrUpdateAll(entities);
    }

    public void update(T t, LockMode lockMode) throws DataAccessException {
        getHibernateTemplate().update(t, lockMode);
    }

    public void update(T t) throws DataAccessException {
        getHibernateTemplate().update(t);
    }

    public void update(String TName, T t, LockMode lockMode)
            throws DataAccessException {
        getHibernateTemplate().update(TName, t, lockMode);
    }

    public void update(String TName, T t) throws DataAccessException {
        getHibernateTemplate().update(TName, t);
    }

    public List<T> loadAll() {
        return getHibernateTemplate().loadAll(getEntityClass());

    }
    
    public List<T> list() {
        Criteria criteria = getSession().createCriteria(getEntityClass());
        return criteria.list();

    }
    
    public PaginationSupport findPageByCriteria(
            final DetachedCriteria detachedCriteria, final int pageSize,
            final int startIndex) {
        return (PaginationSupport) getHibernateTemplate().execute(
                new HibernateCallback() {
                    public Object doInHibernate(Session session)
                            throws HibernateException {
                        Criteria criteria = detachedCriteria
                                .getExecutableCriteria(session);
                        int totalCount = ((Integer) criteria.setProjection(
                                Projections.rowCount()).uniqueResult())
                                .intValue();
                        criteria.setProjection(null);
                        List items = criteria.setFirstResult(startIndex)
                                .setMaxResults(pageSize).list();
                        PaginationSupport ps = new PaginationSupport(items,
                                totalCount, pageSize, startIndex);
                        return ps;
                    }
                }, true);
    }
    public  PaginationSupport findPageByQuery( final  String hsql,  final int pageSize,final int startIndex){ 
         return (PaginationSupport)getHibernateTemplate().execute( 
         new  HibernateCallback() { 
           public  Object doInHibernate(Session session)  throws  HibernateException, SQLException { 
                 Query query  =  session.createQuery(hsql);
                 int totalCount=query.list().size();
                 query.setFirstResult(startIndex); 
                 query.setMaxResults(pageSize); 
                 List items  = query.list();
              PaginationSupport ps = new PaginationSupport(items,
           totalCount, pageSize, startIndex);
              return ps;
                 
                 } 
           },true); 
      }

}


呵呵，使用了泛型,以后每建立一个Dao都要建立相应的dao接口和实现类，如本例中的IUserDao和UserDao。

 

/** 
 *
 * @author <a href="mailto:flustar2008@163.com">flustar</a>
 * @version 1.0 
 * Creation date: Dec 24, 2007 12:47:57 AM
 */
package com.firstssh.dao;

import java.util.List;

import com.firstssh.common.dao.IGenericDao;
import com.firstssh.model.User;

public interface IUserDao extends IGenericDao<User, Long> {
    
    public User getUserByName(String username);

    public List<User> findAllUser();

    public User findUserByNameAndPass(String username, String password);
} 

 

 

/** 
 *
 * @author <a href="mailto:flustar2008@163.com">flustar</a>
 * @version 1.0 
 * Creation date: Dec 24, 2007 12:38:48 AM
 */
package com.firstssh.dao.impl;

import java.util.List;

import com.firstssh.common.dao.GenericDao;
import com.firstssh.dao.IUserDao;
import com.firstssh.model.User;

public class UserDao extends GenericDao<User,Long,IUserDao> implements IUserDao{

    public List<User> findAllUser() {
        
        return (List<User>)find("from User");
    }

    public User findUserByNameAndPass(String username, String password) {
        Object[] params=new Object[]{username,password};
        List<User> userList=find("from User as user where user.username=? and user.password=? ",params);
        if(userList!=null&&userList.size()>=1){
            return userList.get(0);
        }
        return null;
    }


    public User getUserByName(String username) {
        List<User> userList=find("from User as user where user.username=?",username);
        if(userList!=null&&userList.size()>=1){
            return userList.get(0);
        }
        return null;
    }

}
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