password_change_c.java

很好的Java绘图程序源代码

package project;

import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import java.sql.ResultSet;
import java.sql.*;
/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c)  2007</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class Password_change_C {
  JFrame mainframe = null;
  JPanel password_change = null;
  public Password_change_C(JFrame mainframe,JPanel password_change) {
    this.mainframe = mainframe;
    this.password_change = password_change;
  }

  public int update_password(String old_text, String new_text1, String new_text2){
    if(old_text.equals("")){
      JOptionPane.showMessageDialog(this.mainframe,"请输入密码！","提示",JOptionPane.ERROR_MESSAGE);
      return 0;
    }
    if(new_text1.equals("")){
      JOptionPane.showMessageDialog(this.mainframe,"请输入新的密码！","提示",JOptionPane.ERROR_MESSAGE);
      return 1;
    }
    if(new_text2.equals("")){
      JOptionPane.showMessageDialog(this.mainframe,"请再输入一次新的密码！","提示",JOptionPane.ERROR_MESSAGE);
      return 2;
    }
    if(!new_text1.equals(new_text2)){
      JOptionPane.showMessageDialog(this.mainframe,"新密码输入不一致, 请再输入一次新的密码!","提示",JOptionPane.ERROR_MESSAGE);
      return 3;
    }

    DataBase db = new DataBase();
    Frame1 temp = (Frame1)this.mainframe;
    String sql = "select * from login_table where loginName='"+temp.get_userName()+"' and password='"+old_text+"'";


    try {
      ResultSet rs = db.executeQuery(sql);
      if (!rs.next()) {
        JOptionPane.showMessageDialog(this.mainframe,"旧密码输入错误, 请再输入一次!","提示",JOptionPane.ERROR_MESSAGE);
        rs.close();
        return 4;
      }else{
        String update_sql ="update login_table set password='"+new_text1+"' where loginName='"+temp.get_userName()+"'";
        int res = db.executeUpdate(update_sql);
        if(res > 0){
          JOptionPane.showMessageDialog(this.mainframe,"密码更新成功,下次登陆请使用新密码!","提示",JOptionPane.INFORMATION_MESSAGE);
          db.close();
          return 5;
        }else{
          JOptionPane.showMessageDialog(this.mainframe,"密码更新失败!","提示",JOptionPane.ERROR_MESSAGE);
          db.close();
          return 6;
        }
      }
    }
    catch (SQLException ex) {
      ex.printStackTrace();
      db.close();
      JOptionPane.showMessageDialog(this.mainframe,"数据库错误!","提示",JOptionPane.ERROR_MESSAGE);
      return -1;
    }


  }


}