login.java

一个银行数据中心网站

package com.am;
import java.lang.*;
import java.util.*;
import java.sql.*;
import java.text.*;

public class login extends user {


    private String strSql;
    private Connection dbConn;
    private int errNum;
    private String errDesc;
    SimpleDateFormat dateFormatter;
    public login() {
        super();
        strSql = "";
        errNum = 0;
        errDesc = "";

    }

    public boolean isValidUser() throws SQLException {
        strSql = "select * from users ";
        strSql = strSql + " where userName='" + userName + "'";
       strSql = strSql + " and userPassword='" + userPassword + "'";
       strSql = strSql + " and systemRole= '" + systemRole + "'";
        Statement stmt=null ;
        ResultSet rs=null ;


          try{

             stmt = dbConn.createStatement();



                rs = stmt.executeQuery(strSql);

                if (rs.next()) {
                    ID = rs.getLong("ID");
                    userName = rs.getString("userName");
                    userPassword = rs.getString("userPassword");
                    name = rs.getString("name");
                    company = rs.getString("company");
                    depart = rs.getString("depart");
                    email = rs.getString("email");
                    myfields = rs.getString("myfields");
                    systemRole = rs.getString("systemRole");
                    createDatetime = rs.getString("createDatetime");
                    tag = rs.getInt("tag");

                    this.errNum = 0;
                    this.errDesc = "";
                    return true;
                } else {
                    this.errNum = -1;
                    this.errDesc = "Not Valid User";
                    return false;

                }
          }
      catch(Exception ex)
      { this.errNum=-1;
        this.errDesc=ex.toString();
         return false;
     }
     finally{

            }

         }

    public void setConnection(Connection dbConn) {
        this.dbConn = dbConn;
    }

   public void exeSql(String strSql) {
        try {
            Statement stmt = dbConn.createStatement();
            stmt.executeQuery(strSql);
            this.errNum = 0;
            this.errDesc = "";
        } catch (Exception ex) {
            this.errNum = -1;
            this.errDesc = ex.toString();

        }
    }

    public int getErrNum() {
        return errNum;

    }

    public String getErrDesc() {
        return errDesc;
    }
}