SSH整合之全注解

时间：2024-01-11 12:52:38

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　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

SSH整合之全注解

Spring用注解配置事务

SSH整合之全注解

按以上配置配即可

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