user.java

一个基于java的记事本

package com.ntsky.note;

import java.io.*;
import java.sql.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class User extends HttpServlet {
    private SQLDBOperator sdbo = null;
    private static final String CONTENT_TYPE = "text/html; charset=GBK";
    //Initialize global variables
    public void init() throws ServletException {
    }
    //Process the HTTP Post request
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType(CONTENT_TYPE);
        PrintWriter out = response.getWriter();
        String adminName = request.getParameter("adminName");
        //新密码
        String adminPasswd = MD5.toMD5(CodeFilter.toHtml(request.getParameter("adminPasswd")));
        out.println(adminPasswd+"<br>");
        //原始密码
        String passWd = MD5.toMD5(CodeFilter.toHtml(request.getParameter("passWd")));
        out.print(passWd);
        if (sdbo==null)
            sdbo = SQLDBOperator.getInstance("Connection");
        String sql = "select adminPasswd from admin where adminName=?;";
        try{
            sdbo.prepareStatement(sql);
            sdbo.setString(1,adminName);
            ResultSet rs = sdbo.executeQuery();
            rs.next();
            String ap=rs.getString("adminPasswd");
            if(passWd.equals(ap)){
                sdbo.prepareStatement("update admin set adminPasswd=?;");
                sdbo.setString(1,adminPasswd);
                sdbo.executeUpdate();
                URLServlet.getUrl(response,"default.jsp");
            }
            else
                out.println("<Script language=JavaScript>alert('您输入的原始密码有问题!');JavaScript:history.back();</Script>");
            rs.close();
        }
        catch(Exception e){
            System.out.print("Manager isOldPwd() " + e.getMessage());
            Debug.writeLog("Manager isOldPwd(), Exception Occured ! Info :" + e.getLocalizedMessage());
        }
        finally{
            out.close();
            sdbo.Close();
        }
    }
    //Clean up resources
    public void destroy() {
    }
}