jsp新代码第233课

new233.java

package pack03;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

public class new233 extends new230 implements new232
{
  @Override
  public List<new231> getUsers(Map<String, String> contitions)
  {
    String userName = (String)contitions.get("username");
    String pwd = (String)contitions.get("pwd");
    String operate = (String)contitions.get("operate");
    
    String sql = "select * from aa_msguserinfo where 1=1 ";
    if(operate != null && operate.equals("except"))
    {
      if(userName != null)
      {
        sql += " and username !='" + userName + "'";
      }
      else 
      {
        sql += "";
      }
      //sql += userName != null?" and username !='" + userName + "":"";
    }
    else 
    {
      if(userName != null)
      {
        sql += " and username = '" + userName + "'";
      }
      else 
      {
        sql += "";
      }
    }
    
    if(pwd != null)
    {
      sql += " and pwd='" + pwd + "'";
    }
    
    Connection conn = new229.getConnection();
    PreparedStatement pstmt = null;
    ResultSet rs = null;
    
    List<new231> users = new ArrayList<new231>();
    try
    {
      pstmt = conn.prepareStatement(sql);
      rs = pstmt.executeQuery();
      while (rs.next())
      {
        new231 u1 = new new231();
        u1.setUserName(rs.getString("username"));
        u1.setPwd(rs.getString("pwd"));
        u1.setEmail(rs.getString("email"));
        users.add(u1);
      }
    } 
    catch (SQLException e)
    {
      e.printStackTrace();
    }
    finally
    {
      new229.close(rs);
      new229.close(pstmt);
      new229.close(conn);
    }
    
    return users;
  }
  
  
  public int executeUpdate(String sql, new231 userinfo)
  {
    List<Object> list = new ArrayList<Object>();
    list.add(userinfo);
    return executeUpdata(sql, list);
    
  }
  
  @Override
  public int executeUpdata(String sql, List<Object> list)
  {
    return super.executeUpdata(sql, list);
  }
  
}