Java Web SSH-Spring Hibernate Struts SSH三大框架整合概述

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Spring Hibernate Struts SSH三大框架
整合步骤

一、     整合顺序

1)       Spring(管理组件间的依赖关系和事务管理)

2)       Hibernate(数据持久化)

3)       Struts2(交互)

 

SSH整合步骤概览:



以Spring为核心(粘合剂),数据持久化用Hibernate框架,表示层用Struts 2框架。

 

二、     分步整合

Spring和Hibernate整合

配置Spring:

1)        导入Spring 3.1 Core Libraries包(Spring核心包);

2)        导入Spring 3.1 Persistence Libraries包(Spring Framework提供的数据持久化支持);

 

配置Spring配置文件:

1)        启用AOP Builder,并在src下创建applicationContext.xml配置文件,点击完成即可

 

 

配置Hibernate:

1)        导入Hibernate 3.3 Core Libraries包(Hibernate核心包);

2)        导入Hibernate 3.3 Advanced Support Libraries包;

 

配置Hibernate配置文件:

1)        定义Hibernate配置时使用Spring的配置文件applicationContext.xml;

2)        定义Spring-Hibernate配置时使用已存在的applicationContext.xml,且Spring Config为“src/applicationContext.xml”;

3)        选择好登录到数据库的用户;

4)        不勾选创建Session工厂,使用Spring容器对其进行管理,点击完成即可。

 

Spring和Struts整合

配置Struts:

1)        使用Struts 2框架的2.1版本,选用.action为过滤器过滤的后缀;

2)        导入Struts 2 Core Libraries核心包;

3)        导入Struts 2 Spring Libraries包(Struts 2 Framework提供对SpringFramework的支持),点击完成即可。

 

 

较标准的项目结构一览:


 

三、     注意事项

1.        在接口的实现类中,原有书写SQL语句的风格有所不同:

示例代码:

/**          * 添加报销单的方法          */         @Override         public Booleanadd(BizClaimVoucher claimVoucher) {                   Booleanresult = false;                   try {                            super.getHibernateTemplate().save(claimVoucher);                            result= true;                   } catch(Exception e) {                            e.printStackTrace();                            System.err.println(e.getMessage());                   }                   returnresult;         }

 

需要让接口的实现类继承HibernateDaoSupport类,使用此父类的方法。

 

2.        在业务层的实现类中,定义相关DAO类和实例化的方式有所不同:

示例代码:

/**          * 报销单接口属性          */         private ClaimVoucherDao voucherDao;          /**          * 报销单详情接口属性          */         private ClaimVoucherDetailDaovoucherDetailDao;          public ClaimVoucherDetailDaogetVoucherDetailDao() {                   return voucherDetailDao;         }          public voidsetVoucherDetailDao(ClaimVoucherDetailDao voucherDetailDao) {                   this.voucherDetailDao =voucherDetailDao;         }          public ClaimVoucherDao getVoucherDao(){                   return voucherDao;         }          public voidsetVoucherDao(ClaimVoucherDao voucherDao) {                   this.voucherDao = voucherDao;         }          /**          * 保存报销单的方法【业务逻辑】          *          * @param claimVoucher          *           报销单主要信息实体          * @param itemTypes          *           项目类别集合          * @param itemMoneys          *           项目金额集合          * @param itemDescriptions          *           项目说明集合          * @return          */         @Override         public BooleansaveClaimVoucher(BizClaimVoucher claimVoucher,                            String[] itemTypes,String[] itemMoneys, String[] itemDescriptions) {                   Boolean main, secondary =null;                    // 保存报销单主要信息                   main = voucherDao.add(claimVoucher);                    // 保存报销单详细信息                   for (int i = 0; i <itemTypes.length; i++) {                            BizClaimVoucherDetailclaimVoucherDetail = new BizClaimVoucherDetail();                            claimVoucherDetail.setAccount(Double.parseDouble(itemMoneys[i]));                            claimVoucherDetail.setDes(itemDescriptions[i]);                            claimVoucherDetail.setItem(itemTypes[i]);                             claimVoucherDetail.setBizClaimVoucher(claimVoucher);                             secondary =voucherDetailDao.add(claimVoucherDetail);                   }                    // 全部为true则表明报销单表和报销单详情表都成功插入数据,返回true                   if (main == true && secondary== true) {                            return true;                   } else {                            return false;                   }         }


要在业务实现类中定义DAO类接口类型的属性,并封装其getter/setter方法,但不实例化

 

3.        在Action中定义相关Biz的DAO类和实例化的方式有所不同:

示例代码:

/**          *          */         private static final longserialVersionUID = -1533310365193789445L;          /**          * 员工业务接口属性          */         private EmployeeBiz employeeBiz;          /**          * 用户名属性          */         private String username;          /**          * 用户密码属性          */         private String password;          public String getUsername() {                   return username;         }          public void setUsername(Stringusername) {                   this.username = username;         }          public String getPassword() {                   return password;         }          public void setPassword(Stringpassword) {                   this.password = password;         }          public EmployeeBiz getEmployeeBiz() {                   return employeeBiz;         }          public void setEmployeeBiz(EmployeeBiz employeeBiz){                   this.employeeBiz =employeeBiz;         }          /**          * 默认执行的方法          */         @Override         public String execute() throwsException {                   Boolean resu =employeeBiz.IsLogin(username, password);                    if (resu == true) {                            returnEnumResultType.SUCCESS.getTrueType();                   } else {                            returnEnumResultType.FAILED.getTrueType();                   }         }


需要在Action中定义业务接口类型的属性,并封装其getter/setter方法,但不实例化

 

4.        在配置applicationContext.xml配置文件时,遵循从“小接口到大接口”的配置顺序逐一配置以避免漏配。

 

5.        如果在applicationContext.xml配置文件中配置了Action,则在struts.xml配置文件中,Action的name属性值和class属性值都要和applicationContext.xml配置文件中配置的Action的Bean的id一致。

 

6.        JSP页面form表单提交的位置即在struts.xml配置文件中配置的Action的name属性值+”.action”,与之前的方式无异。

 

7.        注意:不要忘记配置web.xml文件

示例代码:

<context-param>      <param-name>contextConfigLocation</param-name>      <param-value>classpath:applicationContext.xml</param-value> </context-param>  <listener>      <listener-class>               org.springframework.web.context.ContextLoaderListener      </listener-class> </listener>

注意:要在<web-app>节点下配置。

 

四、     附

1.        完整applicationContext.xml配置文件示例:

<?xml version="1.0"encoding="UTF-8"?><beansxmlns="http://www.springframework.org/schema/beans"         xmlns:tx="http://www.springframework.org/schema/tx"xmlns:aop="http://www.springframework.org/schema/aop"         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:p="http://www.springframework.org/schema/p"         xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-3.1.xsd         http://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-3.1.xsd         http://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-3.1.xsd         ">          <!--******************************************************************* -->          <!--配置员工DAO -->         <beanid="EmpDao" class="com.practice1.extend.dao.impl.EmployeeDaoImpl">                   <propertyname="sessionFactory"ref="sessionFactory"></property>         </bean>          <!--配置员工BIZ -->         <beanid="EmpBiz"class="com.practice1.extend.biz.impl.EmployeeBizImpl">                   <propertyname="employeeDao" ref="EmpDao"></property>         </bean>          <!--配置员工登录的ACTION -->         <beanid="EmpLogin"class="com.practice1.extend.action.EmpLoginAction">                   <propertyname="employeeBiz" ref="EmpBiz"></property>         </bean>          <!--******************************************************************* -->          <!--配置报销单DAO -->         <beanid="CVDao"class="com.practice1.extend.dao.impl.ClaimVoucherDaoImpl">                   <propertyname="sessionFactory"ref="sessionFactory"></property>         </bean>          <!--配置报销单BIZ -->         <beanid="CVBiz"class="com.practice1.extend.biz.impl.ClaimVoucherBizImpl">                   <propertyname="voucherDao" ref="CVDao"></property>                   <propertyname="voucherDetailDao" ref="CVDDao"></property>         </bean>           <!--配置报销单详情DAO -->         <beanid="CVDDao" class="com.practice1.extend.dao.impl.ClaimVoucherDetailDaoImpl">                   <propertyname="sessionFactory"ref="sessionFactory"></property>         </bean>           <!--配置加载报销单主页的ACTION -->         <beanid="loadCVMainPage"class="com.practice1.extend.action.LoadClaimVoucherIndexAction">                   <propertyname="voucherBiz" ref="CVBiz"></property>         </bean>           <!--配置处理添加报销单信息的ACTION -->         <beanid="execCV"class="com.practice1.extend.action.AddNewClaimVoucherAction">                   <!--报销单接口接口属性和报销单详情接口属性共用一个业务,所以暂时不必配置报销单详情的业务类 -->                   <propertyname="voucherBiz" ref="CVBiz"></property>                   <!--在添加报销单信息业务中还用到了员工相关的接口,所以还要引用员工业务接口用来注入实例 -->                   <propertyname="employeeBiz" ref="EmpBiz"></property>         </bean>          <!--定义事务管理器 -->         <beanid="txManager"                   class="org.springframework.orm.hibernate3.HibernateTransactionManager">                   <propertyname="sessionFactory"ref="sessionFactory"></property>         </bean>          <!--******************************************************************* -->          <!--定义事务规则 -->         <tx:adviceid="txAdv" transaction-manager="txManager">                   <tx:attributes>                            <tx:methodname="*Login" read-only="true" />                            <tx:methodname="add" propagation="REQUIRED" />                            <tx:methodname="save*" propagation="REQUIRED" />                   </tx:attributes>         </tx:advice>          <!--定义切面和切入点并织入切面 -->         <aop:config>                   <aop:pointcutexpression="execution(* com.practice1.extend.biz.*.*(..))"                            id="pointcut"/>                   <aop:advisoradvice-ref="txAdv" pointcut-ref="pointcut" />         </aop:config>          <!--******************************************************************* -->          <beanid="dataSource" class="org.apache.commons.dbcp.BasicDataSource">                   <propertyname="driverClassName"value="oracle.jdbc.driver.OracleDriver">                   </property>                   <propertyname="url"value="jdbc:oracle:thin:@localhost:1521:orcl">                   </property>                   <propertyname="username" value="scott"></property>                   <propertyname="password" value="admin"></property>         </bean>         <beanid="sessionFactory"                   class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">                   <propertyname="dataSource">                            <refbean="dataSource" />                   </property>                   <propertyname="hibernateProperties">                            <props>                                     <propkey="hibernate.dialect">                                               org.hibernate.dialect.Oracle9Dialect                                     </prop>                            </props>                   </property>                   <propertyname="mappingResources">                            <list>                                     <value>                                               com/practice1/extend/entity/BizCheckResult.hbm.xml                                     </value>                                     <value>                                               com/practice1/extend/entity/SysPosition.hbm.xml                                     </value>                                     <value>                                               com/practice1/extend/entity/SysEmployee.hbm.xml                                     </value>                                     <value>                                               com/practice1/extend/entity/BizClaimVoucher.hbm.xml                                     </value>                                     <value>                                               com/practice1/extend/entity/SysDepartment.hbm.xml                                     </value>                                     <value>                                               com/practice1/extend/entity/BizClaimVoucherDetail.hbm.xml                                     </value>                            </list>                   </property>         </bean></beans>

 

完整web.xml配置文件示例:

<?xml version="1.0"encoding="UTF-8"?><web-app version="3.0"         xmlns="http://java.sun.com/xml/ns/javaee"         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee         http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <display-name></display-name>          <context-param>       <param-name>contextConfigLocation</param-name>       <param-value>classpath:applicationContext.xml</param-value> </context-param>  <listener>       <listener-class>                org.springframework.web.context.ContextLoaderListener       </listener-class> </listener>  <welcome-file-list>   <welcome-file>index.jsp</welcome-file> </welcome-file-list> <filter>       <filter-name>struts2</filter-name>       <filter-class>                org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter       </filter-class> </filter> <filter-mapping>       <filter-name>struts2</filter-name>       <url-pattern>*.action</url-pattern> </filter-mapping> <filter-mapping>       <filter-name>struts2</filter-name>       <url-pattern>*.jsp</url-pattern> </filter-mapping> </web-app>

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