checkuserbean.java~8~

来自「本软件简单的实现的对商店的管理」· JAVA~8~ 代码 · 共 40 行

package eshop;
import java.util.*;
import java.sql.*;

public class CheckUserBean {
  private Connection conn;
  private boolean checkResult;

  public CheckUserBean() {
    this.checkResult=false;
  }

  public void setConn(Connection conn){
    this.conn=conn;
  }

  public boolean check(String username,String password){
    try {
      Statement stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
                                            ResultSet.CONCUR_READ_ONLY);
      String sql = "SELECT * FROM Customers WHERE Username='" + username + "'";
      ResultSet rsLogin = stmt.executeQuery(sql);
      if (!rsLogin.next()) {
        this.checkResult = false;
      }
      else if (!password.equals(rsLogin.getString("Password"))) {
        this.checkResult = false;
      }
      else {
        this.checkResult = true;
      }
    }catch(SQLException e){
      e.printStackTrace();
    }
    rsLogin.close();
    stmt.close();
    return checkResult;
  }
}