register.java

JSP实用教程源代码 本书从开发实践出发

package tom.jiafei;
import java.sql.*;
public class Register
{   String  logname="",
           password="",
           sex="",age="",
           email="",
           phone="",
           address="",
           message="";
    String backNews;//用来返回注册是否成功。
     Connection con;
    Statement sql; 
    ResultSet rs;
    public Register()
    {  //加载桥接器：
       try{Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
          }
       catch(ClassNotFoundException e){}
    }
  //设置属性值、获取属性值的方法：
   public void setLogname(String name)
    {  logname=name;
    }
   public String getLogname()
    {return logname;
    }
   public void setAge(String n)
    {  age=n;
    }
   public String getAge()
    {return age;
    }
   public void setSex(String s)
    {  sex=s;
    }
   public String getSex()
    {return sex;
    }
   public void setPassword(String pw)
    {  password=pw;
    }
    public String getPassword()
    {return password;
    }
   public void setEmail(String em)
    {  email=em;
    }
    public String getEmail()
    {return email;
    }
   public void setPhone(String ph)
    {  phone=ph;
    }
   public String getPhone()
    {return phone;
    }
   public void setAddress(String ad)
    {  address=ad;
    }
   public String getAddress()
    {return address;
    }
   public String getMessage()
    {return message;
    } 
   public void setMessage(String m)
    { message=m;
    } 
   public String getBackNews()
    {return backNews;
    }
   public void setBackNews(String s)
    {backNews=s;
    } 
   //添加记录到数据库的member表：
   public void addItem()
    {try{
        con=DriverManager.getConnection("jdbc:odbc:friend","","");
        sql=con.createStatement();
        if(phone.length()==0) //如果用户没有提供电话
           {phone="无";
           }
        if(email.length()==0) //如果用户没有提供Email
           {email="无";
           }
        if(address.length()==0) //如果用户没有提供地址
           {address="无";
           }
        if(message.length()==0) //如果用户没有提供信息
           {message="无";
           }
        String s=
        "'"+logname+"'"+","+"'"+password+"'"+","+"'"+sex+"'"+","+
        "'"+age+"'"+","+ "'"+phone+"'"+","+"'"+email+"'"+","+
        "'"+address+"'"+","+"'"+message+"'";
        String condition="INSERT INTO member VALUES"+"("+s+")";
        sql.executeUpdate(condition);
        backNews="注册成功了";
        con.close();
       }
     catch(SQLException e)
       {//如果用户使用member表中已经存在的名字，或使用了空字段值，就会发生SQL异常
        backNews="你还没有注册，或该用户已经存在，请你更换一个名字";
       }
    }
  
}