ssh整合之七注解结合xml形式

　　1.我们之前的纯xml的方式，我们的配置文件很多，我们可以使用注解结合xml的方式进行开发，这样的话，我们的配置文件，会少很多，同时，我们可以直接在类中看到配置，这样，我们就可以快速地搭建一个ssh整合的项目了

　　首先，我们应该考虑：我们的哪些东西需要我们用注解形式进行替换？

　　第一个：hibernate中的关系映射文件，我们可以使用jpa结合hibernate注解进行替换

　　第二个：spring中，我们的自定义的对象，我们可以使用我们的spring中ioc和tx的注解进行替换

　　第三个：我们的struts.xml可以使用struts的注解替换

　　这个是我们的一个大体上的思路，现在我们就去实现它！

　　我们的 实体类Customer

package com.itheima.entity;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name="cst_customer")
public class Customer {
    @Id
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    @Column(name="cust_id")
    private Long custId;  //客户编号
    @Column(name="cust_name")
    private String custName; //客户名称
    @Column(name="cust_source")
    private String custSource; //客户信息来源
    @Column(name="cust_industry")
    private String custIndustry; //客户所属行业
    @Column(name="cust_level")
    private String custLevel;  //客户级别
    @Column(name="cust_address")
    private String custAddress; //客户联系地址
    @Column(name="cust_phone")
    private String custPhone; //客户联系电话
    public Long getCustId() {
        return custId;
    }
    public void setCustId(Long custId) {
        this.custId = custId;
    }
    public String getCustName() {
        return custName;
    }
    public void setCustName(String custName) {
        this.custName = custName;
    }
    public String getCustSource() {
        return custSource;
    }
    public void setCustSource(String custSource) {
        this.custSource = custSource;
    }
    public String getCustIndustry() {
        return custIndustry;
    }
    public void setCustIndustry(String custIndustry) {
        this.custIndustry = custIndustry;
    }
    public String getCustLevel() {
        return custLevel;
    }
    public void setCustLevel(String custLevel) {
        this.custLevel = custLevel;
    }
    public String getCustAddress() {
        return custAddress;
    }
    public void setCustAddress(String custAddress) {
        this.custAddress = custAddress;
    }
    public String getCustPhone() {
        return custPhone;
    }
    public void setCustPhone(String custPhone) {
        this.custPhone = custPhone;
    }
    @Override
    public String toString() {
        return "Customer [custId=" + custId + ", custName=" + custName + ", custSource=" + custSource
                + ", custIndustry=" + custIndustry + ", custLevel=" + custLevel + ", custAddress=" + custAddress
                + ", custPhone=" + custPhone + "]";
    }
}

　　我们的applicationContext.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<!-- spring的配置文件：导入约束 -->
<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.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        ">

    <!-- 自定义的java对象交给spring进行管理,我们使用注解的形式替换-->
   <context:component-scan base-package="com.itheima"></context:component-scan>
   <tx:annotation-driven/>
   <!--  第三方的jar包中的java对象交给spring进行管理 -->
   <!--  创建一个hibernateTemplate对象 -->
   <bean id="hibernateTemplate" class="org.springframework.orm.hibernate5.HibernateTemplate">
         <!-- 注入sessionFactory -->
         <property name="sessionFactory" ref="sessionFactory"></property>
   </bean>
   <!-- 创建sessionFactory对象 -->
   <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
           <!-- 配置数据库连接池 -->
           <property name="dataSource" ref="dataSource"></property>
           <!-- hibernate的配置文件 -->
           <property name="hibernateProperties">
               <props>
                   <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
                   <prop key="hibernate.hbm2ddl.auto">update</prop>
                   <prop key="hibernate.show_sql">true</prop>
                   <prop key="hibernate.format_sql">true</prop>
               </props>
           </property>
           <!-- 指定要扫描的包
               packagesToScan 在加载配置文件的时候，自动扫描包中的java类
           -->
        <property name="packagesToScan" value="com.itheima.entity"></property>
   </bean>
   <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
           <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
           <property name="url" value="jdbc:mysql:///ssh_280"></property>
           <property name="username" value="root"></property>
           <property name="password" value="root"></property>
   </bean>
   <!--配置hibernate的事务管理 -->
   <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
           <property name="sessionFactory" ref="sessionFactory"></property>
   </bean>
</beans>

　　我们的CustomerAction

package com.itheima.action;

import java.util.List;

import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;

import com.itheima.entity.Customer;
import com.itheima.service.CustomerService;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

@Controller
@ParentPackage("struts-default")
@Namespace("/customer")
@Scope("prototype")
public class CustomerAction extends ActionSupport implements ModelDriven<Customer> {
    private Customer customer = new Customer();
    @Autowired
    private CustomerService customerService;

    private List<Customer> customers;

    public void setCustomers(List<Customer> customers) {
        this.customers = customers;
    }

    public List<Customer> getCustomers() {
        return customers;
    }

    public Customer getModel() {
        return customer;
    }
    //进入添加页面
    @Action(value="addCustomerUI",results={@Result(name="success",location="/jsp/customer/add.jsp")})
    public String addCustomerUI(){
        return this.SUCCESS;
    }
    //进入列表页面
    @Action(value="getAllCustomer",results={@Result(name="success",location="/jsp/customer/list.jsp")})
    public String getAllCustomer(){
        customers = customerService.getAllCustomer();
        return this.SUCCESS;
    }
}

　　我们的CustomerServiceImpl

package com.itheima.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import com.itheima.dao.CustomerDao;
import com.itheima.entity.Customer;
import com.itheima.service.CustomerService;
@Service
@Transactional
public class CustomerServiceImpl implements CustomerService{
    @Autowired
    private CustomerDao customerDao;

    public void addCustomer(Customer customer) {
        customerDao.save(customer);
    }
    @Transactional(propagation=Propagation.SUPPORTS,readOnly=true)
    public List<Customer> getAllCustomer() {
        return customerDao.find();
    }
}

　　我们的CustomerDaoImpl

package com.itheima.dao.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.hibernate5.HibernateTemplate;
import org.springframework.stereotype.Repository;

import com.itheima.dao.CustomerDao;
import com.itheima.entity.Customer;
@Repository
public class CustomerDaoImpl implements CustomerDao {
    @Autowired
    private HibernateTemplate hibernateTemplate;

    public void save(Customer customer) {
        hibernateTemplate.save(customer);
    }

    public List<Customer> find() {
        return (List<Customer>) hibernateTemplate.find("from Customer");
    }
}

　　这样的话，我们的注解结合xml的形式就可以了，下次我们把这个项目改成maven项目