【JavaEE】SSH全注解

来源：互联网发布：java明日潘多拉编辑：程序博客网时间：2024/06/07 18:45

1.下载必要核心jar包，并引入到项目
2.需要注意的spring配置文件，由与需要使用全注解的方式配置文件和之前有些许不同

<?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:context="http://www.springframework.org/schema/context"    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"    xsi:schemaLocation="http://www.springframework.org/schema/beans            http://www.springframework.org/schema/beans/spring-beans-2.5.xsd           http://www.springframework.org/schema/context           http://www.springframework.org/schema/context/spring-context-2.5.xsd           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">    <!-- 让spring关注注解，并扫描com.lagersoft.*包下的所有类 -->    <context:component-scan base-package="com.lagersoft.*"></context:component-scan>    <context:annotation-config></context:annotation-config>    <!-- 数据源配置项 -->    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">        <property name="driverClassName" value="oracle.jdbc.OracleDriver">        </property>        <property name="url" value="jdbc:oracle:thin:@localhost:1521:orcl">        </property>        <property name="username" value="scott"></property>        <property name="password" value="tiger"></property>    </bean>    <!-- SessionFactory配置项 这个bean相当于Hibernate的配置项 -->    <bean id="sessionFactory"        class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">        <property name="dataSource">            <ref bean="dataSource" />        </property>        <property name="annotatedClasses">            <list>                  <value>com.lagersoft.po.Dept</value>                <value>com.lagersoft.po.Emp</value>            </list>          </property>        <property name="hibernateProperties">            <props>                <prop key="hibernate.dialect">                    org.hibernate.dialect.Oracle9Dialect                </prop>                <prop key="hibernate.show_sql">true</prop>                <prop key="hibernate.format_sql">true</prop>            </props>        </property>    </bean>    <!-- 使用声明式事务 -->    <bean id="txManager"        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">        <property name="dataSource" ref="dataSource" />    </bean>    <tx:advice id="txAdvice" transaction-manager="txManager">        <tx:attributes>            <tx:method name="getAll*" read-only="true" propagation="SUPPORTS" />            <tx:method name="find*" read-only="true" propagation="SUPPORTS" />            <tx:method name="update*" read-only="false" propagation="REQUIRED" />            <tx:method name="del*" read-only="false" propagation="REQUIRED" />            <tx:method name="add*" read-only="false" propagation="REQUIRED" />            <tx:method name="*" propagation="REQUIRED" />        </tx:attributes>    </tx:advice>    <!-- 切面的配置项 -->    <aop:config>        <aop:advisor advice-ref="txAdvice"            pointcut="execution(* com.lagersoft.service.*.*(..))" />    </aop:config></beans>

3.数据访问层的实现类使用@org.springframework.stereotype.Repository注解，为了更方便的注入sessionFactory对象可以让所有DAO实现类继承DAO实现类的基类

package com.lagersoft.base;import org.hibernate.SessionFactory;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.orm.hibernate3.HibernateTemplate;/** * DAO层实现类基类:实现sessionFactory的注入 * @author xiaoping * */public class BaseDAOImpl{    private SessionFactory sessionFactory;    private HibernateTemplate hibernateTemplate;    public SessionFactory getSessionFactory() {        return sessionFactory;    }    @Autowired    public void setSessionFactory(SessionFactory sessionFactory) {        this.sessionFactory = sessionFactory;    }    public HibernateTemplate getHibernateTemplate() {        return hibernateTemplate;    }    @Autowired    public void setHibernateTemplate(SessionFactory sessionFactory) {        this.hibernateTemplate = new HibernateTemplate(sessionFactory);    }}

4.业务逻辑层的实现类使用 @org.springframework.stereotype.Service注解，
使用 @org.springframework.beans.factory.annotation.Autowired 来注入需要使用到的DAO

@Servicepublic class EmpServiceImpl implements EmpService {    @Autowired private EmpDAO empDAO;    ...}

5.xxAction类使用 @org.springframework.stereotype.Controller注解
使用 @org.apache.struts2.convention.annotation.Action来注解具体的需要访问的action方法
使用@org.apache.struts2.convention.annotation.Result注解action返回的结果

@Controller@Scope("prototype")public class EmpAction extends ActionSupport{    //spring注入的使用@Autowired    @Autowired EmpService empService;    @Autowired DeptService deptService;    //这里访问/emp_list 这个Action的时候访问 list() 返回SUCCESS 则跳转到/emp_list.jsp页面    @Action(value= "/emp_list",results={        @Result(name="success",location="/emp_list.jsp")    })    public String list(){        list = empService.getAll();        return SUCCESS;    }    //这里跳转到/emp_list 这个Action    @Action(value = "/emp_del",results={        @Result(name = "queryAll",type ="redirectAction", location = "/emp_list")    })    public String del(){        empService.del(emp);        return "queryAll";    }    ...}

6.DEMO例子下载

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