spring处理业务示例(源码)

用spring写的一个模仿"手机充值+查话费+销户"的一个小例子,供spring入门者参考. 

三层结构:

表现层(view) +业务层(business)+数据访问层(dao)

首先定义业务层的接口:

IService.java

 

package business;

import po.cardPO;
import po.phonePO;

public interface IService ...{
    //查询余额
    public double queryBalance(phonePO phone);
    //充值
    public boolean addMoney(phonePO phone,cardPO card);
    //销户
    public boolean delAccount(phonePO phone);
    //判断是否是合法用户
    public boolean isUser(phonePO phone);
}

 

定义dao层的接口:

IMobileDAO.java

 

package dao;

import po.cardPO;
import po.phonePO;

public interface IMobileDAO ...{
    //判断是不是合法手机用户
    public boolean isPhoneExist(phonePO phone);
    //判断充值卡是否有效
    public boolean isCardExist(cardPO card);
    //充值
    public boolean addMoney(phonePO phone);
    //查询余额
    public double queryBalance(phonePO phone);
    //查询充值卡金额
    public double queryCardMoney(cardPO card);
    //销户
    public boolean delAccount(phonePO phone);
}

 

两个po对象:

phonePO.java 手机信息:

 

package po;

public class phonePO ...{
    //手机号
    private String phonenb;
    //手机密码
    private String password;
    //话费
    private double money;
    //状态标志  o表示已注销,1表示正常使用
    private int flag;
    
    
    public int getFlag() ...{
        return flag;
    }
    public void setFlag(int flag) ...{
        this.flag = flag;
    }
    public double getMoney() ...{
        return money;
    }
    public void setMoney(double money) ...{
        this.money = money;
    }
    public String getPassword() ...{
        return password;
    }
    public void setPassword(String password) ...{
        this.password = password;
    }
    public String getPhonenb() ...{
        return phonenb;
    }
    public void setPhonenb(String phonenb) ...{
        this.phonenb = phonenb;
    }
}

 

cardPO.java 充值卡信息:

 

package po;

public class cardPO ...{
    //充值卡密码
    private String password;
    //充值卡金额
    private double money;
    public double getMoney() ...{
        return money;
    }
    public void setMoney(double money) ...{
        this.money = money;
    }
    public String getPassword() ...{
        return password;
    }
    public void setPassword(String password) ...{
        this.password = password;
    }
}

 

实现两个接口:

业务层:ServiceImp.java

 

package business;

import dao.IMobileDAO;
import po.cardPO;
import po.phonePO;

public class ServiceImp implements IService ...{
    private IMobileDAO mobile;
    public boolean addMoney(phonePO phone, cardPO card) ...{
        boolean isok=false;
        if(mobile.isPhoneExist(phone) && mobile.isCardExist(card))...{
            phone.setMoney(getMobile().queryBalance(phone)+getMobile().queryCardMoney(card));
            isok=getMobile().addMoney(phone);
        }
        return isok;
    }

    public boolean delAccount(phonePO phone) ...{
        boolean isok=false;
        if(mobile.isPhoneExist(phone))...{
            isok=getMobile().delAccount(phone);
        }
        return isok;
    }

    public double queryBalance(phonePO phone) ...{
        double money=0;
        if(mobile.isPhoneExist(phone))...{
            money=getMobile().queryBalance(phone);
        }
        return money;
    }

    public IMobileDAO getMobile() ...{
        return mobile;
    }

    public void setMobile(IMobileDAO mobile) ...{
        this.mobile = mobile;
    }

    public boolean isUser(phonePO phone) ...{
        
        return getMobile().isPhoneExist(phone);
    }
}

 

dao层:MobileDAO.java

 

package dao;

import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.sql.DataSource;
import po.cardPO;
import po.phonePO;
import org.springframework.jdbc.core.JdbcTemplate;

public class MobileDAO implements IMobileDAO ...{
    
    private DataSource data;
    
    private JdbcTemplate jdbcTemplate=null;
    
    public boolean addMoney(phonePO phone) ...{
        boolean isok=false;
        try...{
            int i=jdbcTemplate.update("update phone set money="+phone.getMoney()+" where phonenb='"+phone.getPhonenb()+"'");
            if(i!=0)...{
                isok=true;
            }
        }catch(Exception e)...{
            e.printStackTrace();
        }
        return isok;
    }

    public boolean delAccount(phonePO phone) ...{
        boolean isok=false;
        try...{
            int i=jdbcTemplate.update("update phone set flag=0 where phonenb='"+phone.getPhonenb()+"'");
            if(i!=0)...{
                isok=true;
            }
        }catch(Exception e)...{
            e.printStackTrace();
        }
        return isok;
    }

    public boolean isCardExist(cardPO card) ...{
        boolean isok=false;
        try...{
            List list=(List)jdbcTemplate.queryForList("select * from card where password='"+card.getPassword()+"'");
            Iterator it=list.iterator();
            //System.out.println("isCardExist()");
            if(it.hasNext())...{
                isok=true;
            }
        }catch(Exception e)...{
            e.printStackTrace();
        }
        return isok;
    }

    public boolean isPhoneExist(phonePO phone) ...{
        boolean isok=false;
        try...{
            
            List list=(List)jdbcTemplate.queryForList("select * from phone where phonenb='"+phone.getPhonenb()+"' and flag=1 and password="+phone.getPassword()+"");
            //System.out.println(phone.getPhonenb());
            Iterator it=list.iterator();
            
            if(it.hasNext())...{
                isok=true;
                //System.out.println("isPhoneExist");
            }
        }catch(Exception e)...{
            e.printStackTrace();
        }
        return isok;
    }

    public double queryBalance(phonePO phone) ...{
        double balance = 0;
        try...{
            List list=jdbcTemplate.queryForList("select * from phone where phonenb='"+phone.getPhonenb()+"'");
            Iterator it=list.iterator();
            if(it.hasNext())...{
                Map map=(Map)it.next();
                String  Balance=map.get("money").toString();
                balance=Double.parseDouble(Balance);
            }
        }catch(Exception e)...{
            e.printStackTrace();
        }
        return balance;
    }

    public double queryCardMoney(cardPO card) ...{
        double money = 0;
        try...{
            List list=jdbcTemplate.queryForList("select * from card where password='"+card.getPassword()+"'");
            Iterator it=list.iterator();
            if(it.hasNext())...{
                Map map=(Map)it.next();
                String Money=map.get("money").toString();
                money=Double.parseDouble(Money);
            }
            if(money!=0)...{
                jdbcTemplate.update("delete from card where password='"+card.getPassword()+"'");
            }
        }catch(Exception e)...{
            e.printStackTrace();
        }
        return money;
    }

    public DataSource getData() ...{
        return data;
    }

    public void setData(DataSource data) ...{
        jdbcTemplate = new JdbcTemplate(data);
    }
}

表现层:

//充值

package view;

import po.*;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;

import business.IService;

public class addMoney ...{
    public static void main(String[] args)...{
        ApplicationContext context = 
            new FileSystemXmlApplicationContext("src/applicationContext.xml");
        IService service=(IService) context.getBean("myservice");
        phonePO phone=new phonePO();
        cardPO card=new cardPO();
        phone.setPhonenb("12345678912");//输入手机号
        phone.setPassword("123456");//输入手机密码
        card.setPassword("123456789");//输入充值卡密码
        boolean isok=service.addMoney(phone, card);
        if(isok)...{
            System.out.println("充值成功!");
        }else...{
            System.out.println("您输入的手机号不存在或充值卡密码错误!");
        }
    
    }
}

销户:

package view;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;

import po.phonePO;
import business.IService;

public class delAcount ...{
    public static void main(String[] args)...{
        ApplicationContext context = 
            new FileSystemXmlApplicationContext("src/applicationContext.xml");
        IService service=(IService) context.getBean("myservice");
        phonePO phone=new phonePO();
        phone.setPhonenb("12345678910");//输入手机号
        phone.setPassword("123456");//输入手机密码
        boolean isok=service.delAccount(phone);
        if(isok)...{
            System.out.println("注销成功!");
        }else...{
            System.out.println("您输入的手机号不存在或密码误!");
        }    
    }
}

//查话费:

package view;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;

import po.phonePO;
import business.IService;

public class queryMoney ...{
    public static void main(String[] args)...{
        ApplicationContext context = 
            new FileSystemXmlApplicationContext("src/applicationContext.xml");
        IService service=(IService) context.getBean("myservice");
        phonePO phone=new phonePO();
        phone.setPhonenb("13936462854");//输入手机号
        phone.setPassword("619347");//输入手机密码
        double isok=service.queryBalance(phone);
        if(isok!=0)...{
            System.out.println("您的余额为:"+isok);
        }else...{
            System.out.println("您输入的手机号不存在或密码误!");
        }    
    }
}

配置文件:(会在下文中做详细解释)

 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">

<beans>
    <bean id="mydata" 
           class="org.springframework.jdbc.datasource.DriverManagerDataSource">
           <property name="driverClassName">
           <value>oracle.jdbc.driver.OracleDriver</value>
           </property>
           <property name="url">
           <value>jdbc:oracle:thin:@localhost:1521:oracle</value>
           </property>
           <property name="username">
           <value>scott</value>
           </property>
           <property name="password">
           <value>tiger</value>
           </property>
    </bean>
    <bean id="mydao"
          class="dao.MobileDAO">
          <property name="data">
              <ref bean="mydata"/>
          </property>
    </bean>
    <bean id="myservice"
          class="business.ServiceImp">
        <property name="mobile">
            <ref bean="mydao"/>
        </property>
    </bean>


</beans>