SSH整合案例

此篇在上一篇博客的基礎上進行修改，實現註解開發，所需pom節點詳情，還請參考上一篇博客點擊打開鏈接

     使用註解方式來開發，需要做的事如下：

          先來看一下我們的註解版分層的結果目錄：

                                                         

        從圖中可以看到pojo層發生了改變，少了一個配置文件。當然，這只是表面上的，實際上需要改動的地方還是有好幾處的。

          我們先從實體層開始切入： 

                Rs：

       

package cn.jjz.pojo;

import org.hibernate.annotations.GenericGenerator;

import javax.persistence.*;

/**
 * Created by lenovo on 2017/9/22.
 */
@Entity
@Table(name = "Rs")
public class Rs {
    @Id
    @GeneratedValue(generator="system-uuid")
    @GenericGenerator(name="system-uuid",strategy="uuid")
    private String id;
    @Column
    private String name;
    @Column
    private int age;


    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}

   我們再來看看dao層中的實現類：

      

package cn.jjz.dao;

import cn.jjz.pojo.Rs;
import org.hibernate.SessionFactory;
import org.springframework.stereotype.Repository;

import javax.annotation.Resource;

/**
 * Created by lenovo on 2017/10/29.
 */
@Repository("RsDao")
public class RsDaoImpl implements  RsDao {
    @Resource
    private SessionFactory sessionFactory;
    public void add(Rs rs) {
        sessionFactory.getCurrentSession().save(rs);
    }

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

    public SessionFactory getSessionFactory() {
        return sessionFactory;
    }
}

       可以發現，添加上了註解

  再看看service層中的實現類：

 

package cn.jjz.service;


import cn.jjz.dao.RsDaoImpl;
import cn.jjz.pojo.Rs;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;

/**
 * Created by lenovo on 2017/10/29.
 */
@Service("RsService")
public class RsServiceImpl implements RsService {
 @Resource(name = "RsDao")
    private RsDaoImpl rsDao;

    @Transactional
    public void add(Rs rs) {
        rsDao.add(rs);
    }

    public void setRsDao(RsDaoImpl rsDao) {
        this.rsDao = rsDao;
    }

    public RsDaoImpl getRsDao() {
        return rsDao;
    }
}

        也是加上了註解

我們再看看applicationContext.xml中的配置，有哪些改動：

     

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       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.xsd
     http://www.springframework.org/schema/context  http://www.springframework.org/schema/context/spring-context.xsd
     http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
">

    <context:component-scan base-package="cn.jjz"></context:component-scan>
    <!--1.配置數據源c3p0-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driverClassName}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
    </bean>
    <!--jdbc.properties-->
    <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>
    <!-- 配置session工廠     類：Local-->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="packagesToScan" value="cn.jjz.pojo"/>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.format_sql">true</prop>
                <prop key="hbm2ddl.auto">update</prop>
                <prop key="hibernate.dialect">    org.hibernate.dialect.Oracle10gDialect</prop>
                <prop key="hibernate.current_session_context_class">org.springframework.orm.hibernate5.SpringSessionContext</prop>
            </props>
        </property>
        <!--<property name="mappingDirectoryLocations" value="classpath:cn/jjz/pojo"></property>-->
    </bean>


    <!-- 事務管理器-->
    <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>
    <!--事務-->
    <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>


</beans>

       

    非註解applicationContext.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       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.xsd
     http://www.springframework.org/schema/context  http://www.springframework.org/schema/context/spring-context.xsd
     http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
">
    <!--1.配置數據源c3p0-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driverClassName}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
    </bean>
    <!--jdbc.properties-->
    <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>
    <!-- 配置session工廠     類：Local-->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.format_sql">true</prop>
                <prop key="hbm2ddl.auto">update</prop>
                <prop key="hibernate.dialect">    org.hibernate.dialect.Oracle10gDialect</prop>
                <prop key="hibernate.current_session_context_class">org.springframework.orm.hibernate5.SpringSessionContext</prop>
            </props>
        </property>
        <property name="mappingDirectoryLocations" value="classpath:cn/jjz/pojo"></property>
    </bean>

    <!--3.dao-->
    <bean id="rsDao" class="cn.jjz.dao.RsDaoImpl">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>

    <!--4.service-->
    <bean id="rsService" class="cn.jjz.service.RsServiceImpl">
        <property name="rsDao" ref="rsDao"></property>
    </bean>

    <!--要用Spring去創建Action對象  Struts2的Action是多例的-->
    <bean id="rsAction" class="cn.jjz.action.RsAction" scope="prototype">
        <property name="rsService" ref="rsService"></property>
    </bean>


    <!-- 事務管理器-->
    <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>
    <!--事務-->
    <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>


</beans>

       再看看struts.xml：

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
        "http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>

    <constant name="struts.devMode" value="true"></constant>
    <package name="one" namespace="/"  extends="struts-default">

        <action name="add" class="cn.jjz.action.RsAction" method="add">
            <result name="success">/ok.jsp</result>
        </action>

    </package>

</struts>

  最後看看需要改動的地方：

RsAction：

package cn.jjz.action;

import cn.jjz.pojo.Rs;
import cn.jjz.service.RsService;
import com.opensymphony.xwork2.ActionSupport;
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Result;
import org.springframework.core.StandardReflectionParameterNameDiscoverer;
import org.springframework.stereotype.Controller;

import javax.annotation.Resource;
import javax.persistence.Column;
import java.util.List;

/**
 * Created by lenovo on 2017/10/29.
 */
@Controller
public class RsAction extends ActionSupport {
    private Rs rs;
    @Resource(name = "RsService")
    private RsService rsService;
    @Action(value = "add",results = {@Result(name = "success",location = "/ok.jsp")})
    public String add(){
        rsService.add(rs);
        System.out.println(rs.getName());
        return SUCCESS;
    }

    public Rs getRs() {
        return rs;
    }

    public void setRs(Rs rs) {
        this.rs = rs;
    }

    public RsService getRsService() {
        return rsService;
    }

    public void setRsService(RsService rsService) {
        this.rsService = rsService;
    }
}