Struts2+spring2+hibernate3整合方案
最近闲来无事可做,于是开始学习struts2。Struts2和struts1、webwork2有什么区别我也不说了,网上有很多这方面的资料。以前在项目中从未使用过struts,一直使用spring+hibernate,现在既然学习了Struts,也不能浪费,于是乎开始琢磨着怎么整合这3个框架。整合原理以spring为容器,管理hibernate的DAO和Struts2的Action。
一、 准备工作
Struts2.06+spring2.5+hibernate3.2+jdk6.0+myeclipse6.0+tomcat5.5+mysql5.0
以上是整合的原料。下面以一个注册登陆的例子来开始我们的整合过程。
这个例子很简单,下面是它的sql脚本内容:
CREATE TABLE `user` (
`userid` int(11) NOT NULL AUTO_INCREMENT,
`username` varchar(20) NOT NULL,
`password` varchar(16) NOT NULL,
`email` varchar(30) NOT NULL,
PRIMARY KEY (`userid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf-8;
二、 开始行动
包结构可以参考下图
图一
图二
图三
1) Struts部分:建立struts.xml和struts.properties
Struts.xml内容如下:
<! DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd" >
< struts >
< package name ="user_curd" extends ="struts-default" >
< global-results >
<!-- 下面定义的结果对所有的Action都有效 -->
< result name ="exception" > /error.jsp </ result >
</ global-results >
< global-exception-mappings >
<!-- 指Action抛出Exception异常时,转入名为exception的结果。 -->
< exception-mapping exception ="java.lang.Exception" result ="exception" />
</ global-exception-mappings >
< action name ="Login" class ="LoginAction" >
< result name ="success" > /success.jsp </ result >
< result name ="input" > /login.jsp </ result >
</ action >
< action name ="Regist" class ="RegistAction" >
< result name ="success" > /success.jsp </ result >
< result name ="input" > /regist.jsp </ result >
</ action >
</ package >
</ struts >
Struts.properties内容如下:
struts.enable.DynamicMethodInvocation = true
struts.i18n.reload = true
struts.ui.theme =xhtml
struts.locale = zh_CN
struts.i18n.encoding = UTF- 8
struts.objectFactory = spring
struts.objectFactory.spring.autoWire = name
struts.serve.static.browserCache = false
struts.url.includeParams = none
2) 建立User.java和User.hbm.xml、jdbc.properties:
User.java内容如下:
*
* @author <a href="mailto:[email protected]">flustar</a>
* @version 1.0
* Creation date: Dec 23, 2007 1:55:28 PM
*/
package com.firstssh.model;
import java.io.Serializable;
public class User implements Serializable {
private int id;
private String username;
private String password;
private String email;
public int getId() {
return id;
}
public void setId(int 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;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
User.hbm.xml内容:
<! DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
< hibernate-mapping
package ="com.firstssh.model" >
< class name ="User" table ="User" >
< id name ="id" column ="userid" >
< generator class ="identity" />
</ id >
< property name ="username"
column ="username"
not-null ="true"
length ="20"
/>
< property name ="password"
column ="password"
not-null ="true"
length ="16" />
< property name ="email"
column ="email"
not-null ="true"
length ="30" />
</ class >
</ hibernate-mapping >
jdbc.properties内容如下:
datasource.driverClassName = com.mysql.jdbc.Driver
datasource.url = jdbc:mysql://localhost: 3306 /test?useUnicode = true&characterEncoding = UTF- 8
datasource.username = root
datasource.password = 123456
datasource.maxActive = 10
datasource.maxIdle = 2
datasource.maxWait = 120000
datasource.whenExhaustedAction = 1
datasource.validationQuery = select 1 from dual
datasource.testOnBorrow = true
datasource.testOnReturn = false
c3p0.acquireIncrement = 3
c3p0.initialPoolSize = 3
c3p0.idleConnectionTestPeriod = 900
c3p0.minPoolSize = 2
c3p0.maxPoolSize = 50
c3p0.maxStatements = 100
c3p0.numHelperThreads = 10
c3p0.maxIdleTime = 600
hibernate.dialect = org.hibernate.dialect.MySQLInnoDBDialect
#hibernate.dialect = org.hibernate.dialect.MySQLMyISAMDialect
hibernate.jdbc.batch_size = 25
hibernate.jdbc.fetch_size = 50
hibernate.show_sql = true
hibernate.connection.release_mode = after_transaction
3) Spirng部分:为了清晰把Spring的配置文件拆分成以下几部分applicationContext-dao.xml、appliationContext-service.xml、applicationContext-hibernate.xml、action-servlet.xml。
applicationContext-hibernate.xml内容:
<! DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd" >
< beans >
< bean id ="propertyConfigurer"
class ="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" >
< property name ="locations" >
< list >
<!-- <value>WEB-INF/mail.properties</value> -->
< value > WEB-INF/jdbc.properties </ value >
<!-- <value>WEB-INF/oscache.properties</value> -->
</ list >
</ property >
</ bean >
<!-- MailSender used by EmailAdvice -->
<!--
<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
<property name="host" value="${mail.host}"/>
</bean>
-->
< bean id ="dataSource" class ="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method ="close" dependency-check ="none" >
< property name ="driverClass" >
< value > ${datasource.driverClassName} </ value >
</ property >
< property name ="jdbcUrl" >
< value > ${datasource.url} </ value >
</ property >
< property name ="user" >
< value > ${datasource.username} </ value >
</ property >
< property name ="password" >
< value > ${datasource.password} </ value >
</ property >
< property name ="acquireIncrement" >
< value > ${c3p0.acquireIncrement} </ value >
</ property >
< property name ="initialPoolSize" >
< value > ${c3p0.initialPoolSize} </ value >
</ property >
< property name ="minPoolSize" >
< value > ${c3p0.minPoolSize} </ value >
</ property >
< property name ="maxPoolSize" >
< value > ${c3p0.maxPoolSize} </ value >
</ property >
< property name ="maxIdleTime" >
< value > ${c3p0.maxIdleTime} </ value >
</ property >
< property name ="idleConnectionTestPeriod" >
< value > ${c3p0.idleConnectionTestPeriod} </ value >
</ property >
< property name ="maxStatements" >
< value > ${c3p0.maxStatements} </ value >
</ property >
< property name ="numHelperThreads" >
< value > ${c3p0.numHelperThreads} </ value >
</ property >
</ bean >
< bean id ="sessionFactory"
class ="org.springframework.orm.hibernate3.LocalSessionFactoryBean" >
< property name ="dataSource" >
< ref local ="dataSource" />
</ property >
< property name ="mappingResources" >
< list >
< value > com/firstssh/model/User.hbm.xml </ value >
</ list >
</ property >
< property name ="hibernateProperties" >
< props >
< prop key ="hibernate.dialect" > ${hibernate.dialect} </ prop >
< prop key ="hibernate.show_sql" > ${hibernate.show_sql} </ prop >
< prop key ="hibernate.jdbc.fetch_size" >
${hibernate.jdbc.fetch_size}
</ prop >
< prop key ="hibernate.jdbc.batch_size" >
${hibernate.jdbc.batch_size}
</ prop >
</ props >
</ property >
</ bean >
<!-- 配置事务管理器bean,使用HibernateTransactionManager事务管理器 -->
< bean id ="transactionManager"
class ="org.springframework.orm.hibernate3.HibernateTransactionManager" >
<!-- 为事务管理器注入sessionFactory" -->
< property name ="sessionFactory" ref ="sessionFactory" />
</ bean >
<!-- 配置事务拦截器Bean -->
< bean id ="transactionInterceptor"
class ="org.springframework.transaction.interceptor.TransactionInterceptor" >
<!-- 为事务拦截器bean注入一个事物管理器 -->
< property name ="transactionManager" ref ="transactionManager" ></ property >
< property name ="transactionAttributes" >
<!-- 定义事务传播属性 -->
< props >
< prop key ="insert*" > PROPAGATION_REQUIRED </ prop >
< prop key ="update*" > PROPAGATION_REQUIRED </ prop >
< prop key ="save*" > PROPAGATION_REQUIRED </ prop >
< prop key ="add*" > PROPAGATION_REQUIRED </ prop >
< prop key ="remove*" > PROPAGATION_REQUIRED </ prop >
< prop key ="delete*" > PROPAGATION_REQUIRED </ prop >
< prop key ="get*" > PROPAGATION_REQUIRED,readOnly </ prop >
< prop key ="find*" > PROPAGATION_REQUIRED,readOnly </ prop >
< prop key ="load*" > PROPAGATION_REQUIRED,readOnly </ prop >
< prop key ="change*" > PROPAGATION_REQUIRED </ prop >
< prop key ="*" > PROPAGATION_REQUIRED,readOnly </ prop >
</ props >
</ property >
</ bean >
<!-- 定义BeanNameAutoProxyCreator -->
< bean class ="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator" >
<!-- 指定满足哪些bean自动生成业务代理 -->
< property name ="beanNames" >
<!-- 需要自动创建事务代理的bean -->
< list >
< value > userService </ value >
</ list >
<!-- 其它需要自动创建事务代理的bean -->
</ property >
< property name ="interceptorNames" >
< list >
< value > transactionInterceptor </ value >
<!-- 可增加其它的interceptor -->
</ list >
</ property >
</ bean >
</ beans >
applicationContext-dao.xml内容:
<! 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:
<! 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:
<! 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 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:
5)web.xml
< 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
<! 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:[email protected]">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 T load(ID id) throws DataAccessException;
public T get(ID id)throws DataAccessException;
public boolean contains(T t) 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(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 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> list()throws DataAccessException;
public List<T> findByNamedQuery(String queryName)throws DataAccessException ;
public List<T> findByNamedQuery(String queryName, Object value)throws DataAccessException ;
public List<T> findByNamedQuery(String queryName, Object[] values)throws DataAccessException ;
public PaginationSupport findPageByCriteria(
final DetachedCriteria detachedCriteria, final int pageSize,
final int startIndex);
public PaginationSupport findPageByQuery(final String hql,
final String countHql, final int pageSize, final int startIndex);
}
GenericDao.java内容如下:
*
* @author <a href="mailto:[email protected]">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 > extends HibernateDaoSupport
implements IGenericDao < T, ID > {
private 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) throws DataAccessException {
this.getHibernateTemplate().saveOrUpdate(t);
}
public T load(ID id) throws DataAccessException {
T load = (T) getHibernateTemplate().load(getEntityClass(), id);
return load;
}
public T get(ID id) throws DataAccessException {
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 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 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 List<T> list() throws DataAccessException {
return getHibernateTemplate().loadAll(getEntityClass());
}
public List<T> findByNamedQuery(String queryName)
throws DataAccessException {
return getHibernateTemplate().findByNamedQuery(queryName);
}
public List<T> findByNamedQuery(String queryName, Object value)
throws DataAccessException {
return getHibernateTemplate().findByNamedQuery(queryName, value);
}
public List<T> findByNamedQuery(String queryName, Object[] values)
throws DataAccessException {
return getHibernateTemplate().findByNamedQuery(queryName, values);
}
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 hql, final String countHql,final int pageSize,final int startIndex){
return (PaginationSupport)getHibernateTemplate().execute(
new HibernateCallback() {
public Object doInHibernate(Session session) throws HibernateException, SQLException {
int totalCount=((Integer) session.createQuery(countHql).iterate().next()).intValue();
Query query = session.createQuery(hql);
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:[email protected]">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, In teger> {
public User getUserByName(String username);
public List<User> findAllUser();
public User findUserByNameAndPass(String username, String password);
}
*
* @author <a href="mailto:[email protected]">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,Integer > 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;
}
}
还有好多文件的代码没有贴出来,我实在不忍心再复制、粘贴下去了(浪费大家那么多时间),有兴趣的可以下载这个例子的源代码(由于这个例子牵涉的jar包比较大我就不把它们放进去了),我想以上这些文件的内容我就不用解释了,因为大家都学过SSH。本人初次整合它们,并没有使用这个整合方案做过项目,一定还有某些方面考虑的还不是太成熟,哪位大侠看了,还请多多批评指正,也希望谁有更好的整合方案,也共享一下,大家共同进步,共同提高!~^_^