更改密码.java~6~

学生信息管理系统(JBuilder x 开发,采用RSA 512位公钥加密,私钥用于找回密码,2006-4-5)

package untitled3;

import java.awt.*;
import javax.swing.*;
//import com.borland.dbswing.*;
//import com.borland.dx.sql.dataset.*;
import java.awt.event.*;
import java.sql.*;
import java.security.*;
import java.security.spec.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import javax.crypto.interfaces.*;
import java.security.interfaces.*;
import java.math.*;
import java.io.*;


/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2001</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class 更改密码 extends JDialog {
  JLabel jLabel1 = new JLabel();
  JLabel jLabel3 = new JLabel();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  JPasswordField jPasswordField1 = new JPasswordField();
  //Database database1 = new Database();
  //QueryDataSet queryDataSet1 = new QueryDataSet();
  private int counter=0;
  private int counter1=0;

  private int flag=0;
  Connection con=null;
  Connection connection;
  ResultSet rs=null;
  PreparedStatement ps=null;
  Statement stmt;
  Statement stmt1;
  Statement statement;
  private String operator,password,right;
  private int length=0;
  JLabel jLabel2 = new JLabel();
  JLabel jLabel5 = new JLabel();
  JPasswordField jPasswordField2 = new JPasswordField();
  JPasswordField jPasswordField3 = new JPasswordField();


  public 更改密码(Frame frame, String title, boolean modal) {
    super(frame, title, modal);
    try {
      jbInit();
      pack();
    }
    catch(Exception ex) {
      ex.printStackTrace();
    }
  }

  public 更改密码(String op,String pw,String rt) {
    this(null, "", false);
    operator=op;
    password=pw;
    right=rt;
  }

  private void jbInit() throws Exception {
    jLabel1.setFont(new java.awt.Font("楷体_GB2312", 0, 35));
    jLabel1.setText("学生信息管理系统");
    jLabel1.setBounds(new Rectangle(63, 20, 348, 63));
    this.getContentPane().setLayout(null);
    jLabel3.setFont(new java.awt.Font("Dialog", 0, 20));
    jLabel3.setText("旧   密   码：");
    jLabel3.setBounds(new Rectangle(40, 92, 126, 40));
    jButton1.setBounds(new Rectangle(193, 246, 94, 30));
    jButton1.setFont(new java.awt.Font("Dialog", 0, 20));
    jButton1.setText("确定");
    jButton1.addActionListener(new 更改密码_jButton1_actionAdapter(this));
    jButton2.setBounds(new Rectangle(294, 246, 92, 31));
    jButton2.setFont(new java.awt.Font("Dialog", 0, 20));
    jButton2.setText("退出");
    jButton2.addActionListener(new 更改密码_jButton2_actionAdapter(this));
    jPasswordField1.setFont(new java.awt.Font("Dialog", 0, 15));
    jPasswordField1.setText("");
    jPasswordField1.setBounds(new Rectangle(156, 98, 152, 31));
  //  database1.setConnection(new com.borland.dx.sql.dataset.ConnectionDescriptor("jdbc:odbc:学生信息管理", "sample", "", false, "sun.jdbc.odbc.JdbcOdbcDriver"));
    jLabel2.setFont(new java.awt.Font("Dialog", 0, 20));
    jLabel2.setVerifyInputWhenFocusTarget(true);
    jLabel2.setText("新   密   码：");
    jLabel2.setBounds(new Rectangle(40, 137, 127, 29));
    jLabel5.setFont(new java.awt.Font("Dialog", 0, 20));
    jLabel5.setText("确认新密码：");
    jLabel5.setBounds(new Rectangle(37, 175, 123, 33));
    jPasswordField2.setFont(new java.awt.Font("Dialog", 0, 15));
    jPasswordField2.setText("");
    jPasswordField2.setBounds(new Rectangle(156, 136, 152, 32));
    jPasswordField3.setFont(new java.awt.Font("Dialog", 0, 15));
    jPasswordField3.setBounds(new Rectangle(155, 178, 152, 31));
    this.getContentPane().add(jLabel1, null);
    this.getContentPane().add(jButton2, null);
    this.getContentPane().add(jButton1, null);
    this.getContentPane().add(jLabel2, null);
    this.getContentPane().add(jLabel3, null);
    this.getContentPane().add(jPasswordField1, null);
    this.getContentPane().add(jPasswordField2, null);
    this.getContentPane().add(jLabel5, null);
    this.getContentPane().add(jPasswordField3, null);
  }

public String encrypt(String  str)
{    String cp="";
    try{
        //获取公约及参数e,n
        FileInputStream f = new FileInputStream("Skey_RSA_pub.dat");
        ObjectInputStream b = new ObjectInputStream(f);
        RSAPublicKey pbk = (RSAPublicKey) b.readObject();
        BigInteger e1 = pbk.getPublicExponent();
        BigInteger n = pbk.getModulus();
        System.out.println("e1=" + e1);
        System.out.println("n=" + n);
        //获取明文m
        byte ptext[] = str.getBytes("UTF8");
        BigInteger m = new BigInteger(ptext);
        //计算密文，打印
        BigInteger c = m.modPow(e1, n);
        System.out.println("c=" + c);
        //保存密文
        cp=c.toString();
       // BufferedWriter out =
       //     new BufferedWriter(new OutputStreamWriter(new FileOutputStream(
      //      "Enc_RAS.dat")));
//   out.write(cs, 0, cs.length());
//   out.close();
      }catch(Exception ex){ex.printStackTrace();}
return cp;
}



  void cancel() {
          dispose();
      }

  void jButton2_actionPerformed(ActionEvent e) {
cancel();
  }
//////////////////////更改密码/////////////////////
  void jButton1_actionPerformed(ActionEvent e) {
    String str1 = jPasswordField1.getText().trim();
    String str2 = jPasswordField2.getText().trim();
    String str3 = jPasswordField3.getText().trim();
    //////////////////加密///////////////////////////////////////////
  str1=encrypt(str1);
  str2=encrypt(str2);
  str3=encrypt(str3);
///////////////////////////////////////


    try {

    try {
      Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); // 实例化JDBC-ODBC桥的驱动
    }
    catch (ClassNotFoundException ex1) {
    }
     String url = "jdbc:odbc:学生信息管理";                   // 设置连接字符串
     connection = DriverManager.getConnection(url);        // 连接数据库
     // 创建Statement接口对象
     statement = connection.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);
     String sql = "SELECT * FROM 用户 WHERE 用户=";
      sql += "'" + operator + "'";
      sql += " AND 权限=" + right;
      rs = statement.executeQuery(sql);           // 执行学号为输入学号的查询语句
      if(password.equals(str1)){
        if(str2.equals(str3)){
      sql="UPDATE 用户 SET 密码=";
          sql+="'"+str2+"'";
          sql+=" WHERE 用户=";
          sql+="'"+operator+"'";

       statement.executeUpdate(sql);
       JOptionPane.showMessageDialog(this, "密码已更改！", "警告",
                                          JOptionPane.INFORMATION_MESSAGE);
            cancel();
      // 执行更新数据记录语句
       // 清空信息框
     }else{
           JOptionPane.showMessageDialog(this, "密码不一致！", "警告",
                                            JOptionPane.INFORMATION_MESSAGE);
           }

         }else{ JOptionPane.showMessageDialog(this, "密码错误！", "警告",
                                          JOptionPane.INFORMATION_MESSAGE);}
}
   catch(SQLException ex){                               // 捕捉异常
     System.out.println("\nERROR:----- SQLException -----\n");
     while (ex != null) {
       System.out.println("Message:   " + ex.getMessage());
       System.out.println("SQLState:  " + ex.getSQLState());
       System.out.println("ErrorCode: " + ex.getErrorCode());
       ex = ex.getNextException();
     }
   }




 /* Dcyh jr = new Dcyh();
    Statement stemtjr = jr.stmt;
    Connection fd = jr.con;
    String str1 = jPasswordField1.getText().trim();
    String str2 = jPasswordField2.getText().trim();
    String str3 = jPasswordField3.getText().trim();


      String sql = "SELECT * FROM 用户 WHERE 用户=";
      sql += "'" + operator + "'";
      sql += " AND 权限=" + right;

      try {
        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
      }
      catch (Exception ex) {}
      try {
        con = DriverManager.getConnection("jdbc:odbc:用户", "sample", "");
        stmt = con.createStatement();
        stmt1 = con.createStatement();
        rs = stmt.executeQuery(sql);
////////////////////////////////////
       // lookup(String sql)
         // {
        //    rs=stmt.executeQuery(sql);
        //  }
/////////////////////////////////////
      }
      catch (Exception ex) {}
      try {
        ResultSet rsjr = stemtjr.executeQuery(sql);
        if (rsjr.next()) {
          password = rsjr.getString(2);
          length = operator.length();
        }
      }
      catch (Exception ex) {
        //  JOptionPane.showMessageDialog(this,"用户或密码错误","警告",JOptionPane.INFORMATION_MESSAGE);
      }

     // System.out.println("str1 "+str1);
    //  System.out.println("str2 "+str2);
    //  System.out.println("operator "+operator);
    //  System.out.println("password "+password);

  if(password.equals(str1)){
        if(str2.equals(str3)){
          try {
            stmt1 = con.createStatement();
          }
          catch (Exception ex2) {System.out.print("error");
          }
       try {
     sql="UPDATE 用户 SET '密码'=";
         sql+="'"+str2+"'";
         sql+=" WHERE 用户=";
         sql+="'"+operator+"'";
          System.out.println("sql"+sql);

          stmt1.executeUpdate(sql);
             }
        catch (Exception ex1) {System.out.print("error");
        }
        JOptionPane.showMessageDialog(this, "密码已更改！", "警告",
                                          JOptionPane.INFORMATION_MESSAGE);
    }//if(str2==str3)
    else{
         JOptionPane.showMessageDialog(this, "密码不一致！", "警告",
                                          JOptionPane.INFORMATION_MESSAGE);
         }
  }
  else{ JOptionPane.showMessageDialog(this, "密码错误！", "警告",
                                          JOptionPane.INFORMATION_MESSAGE);}
          */
////////////////////////////////////////////////

}//button1///////////////

////////////保存用户及权限//////////////////
  public String GetOperator(){return operator;}
  public String GetPassword(){return password;}
  public String GetRight(){return right;}
}
class 更改密码_jButton2_actionAdapter implements java.awt.event.ActionListener {
  更改密码 adaptee;

  更改密码_jButton2_actionAdapter(更改密码 adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton2_actionPerformed(e);
  }
}

class 更改密码_jButton1_actionAdapter implements java.awt.event.ActionListener {
  更改密码 adaptee;

  更改密码_jButton1_actionAdapter(更改密码 adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }

}