SSH整合之全注解

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　SSH整合之全注解

使用注解配置，需要我们额外引入以下jar包

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我们下面从实体层开始替换注解

package cn.yxj.beans;

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

@Entity
@Table@Table(name="stock")
public class Stock {

    @Id
    @GeneratedValue
@Column(name="sid" )
    private int sid;
    private String sname;
    private int count;

    public int getSid() {
        return sid;
    }
    public void setSid(int sid) {
        this.sid = sid;
    }

    public String getSname() {
        return sname;
    }
    public void setSname(String sname) {
        this.sname = sname;
    }
    public int getCount() {
        return count;
    }
    public void setCount(int count) {
        this.count = count;
    }
}

Dao层替换 给实现类添加注解即可

package cn.yxj.dao.impl;

import java.io.Serializable;
import java.util.List;

import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.support.JdbcDaoSupport;
import org.springframework.stereotype.Repository;

import cn.yxj.beans.Stock;
import cn.yxj.dao.StockDao;

@Repository("stockDao")　　//它用于将数据访问层(DAO 层 ) 的类标识为 Spring Bean
public class StockDaoImpl  implements StockDao{

    @Autowired
    private SessionFactory sessionFactory;

    //添加股票
        public int addStock(Stock stock) {

            Serializable count = sessionFactory.getCurrentSession().save(stock);
            return ((Integer)count).intValue();
        }

        public List<Stock> getAllStock() {
            String sql="from Stock ";
            List<Stock> list = sessionFactory.getCurrentSession().createQuery(sql).list();
            return list;
        }

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

Service层也是替换实现类 使用注解

package cn.yxj.service.impl;

import java.util.List;

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

import cn.yxj.beans.Stock;
import cn.yxj.beans.StockException;

import cn.yxj.dao.StockDao;
import cn.yxj.service.StockService;

@Service("service")
public class StockServiceImpl implements StockService{

    //植入Dao对象
    @Autowired
    @Qualifier("stockDao")
    private StockDao stockDao;

    @Transactional
    public int addStock(Stock stock) {
        return stockDao.addStock(stock);
    }

    public List<Stock> getAllStock() {

        return stockDao.getAllStock();
    }

    public StockDao getStockDao() {
        return stockDao;
    }

    public void setStockDao(StockDao stockDao) {
        this.stockDao = stockDao;
    }

}

Action层 使用注解

package cn.yxj.action;

import java.io.UnsupportedEncodingException;
import java.util.List;

import javax.annotation.Resource;

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.context.annotation.Scope;
import org.springframework.stereotype.Controller;

import cn.yxj.beans.Stock;
import cn.yxj.service.StockService;

import com.opensymphony.xwork2.ActionSupport;

@Controller
@Scope("prototype")
@Namespace("/stock")
@ParentPackage("struts-default")
public class AddStockAction extends ActionSupport{
    private Stock stock;
    //植入Service对象
    @Resource
    private StockService stockService;

    @Action(value="addStockAction",results={@Result(name="success",location="/addSuccess.jsp")})
    public String addStock() throws UnsupportedEncodingException{

        //stock.setSname(new String(stock.getSname().getBytes("iso-8859-1"),"utf-8"));
        int addStock = stockService.addStock(stock);
        System.out.println("添加股票 "+addStock);

        return SUCCESS;
    }

    public Stock getStock() {
        return stock;
    }

    public void setStock(Stock stock) {
        this.stock = stock;
    }
    public StockService getStockService() {
        return stockService;
    }

    public void setStockService(StockService stockService) {
        this.stockService = stockService;
    }

}

这里我们需要注意applicationContext.xml配置文件中的配置信息

引入包扫描器

 <!-- 包扫描器 -->
     <context:component-scan base-package="cn.yxj"></context:component-scan>

将小配置文件的引入换为以下形式

<property name="packagesToScan" value="cn.yxj.beans">

如果用上面的扫描器，我们必须保证sessionFactory的为Hibernate5或者为以下形式

Spring用注解配置事务

按以上配置配即可