validateregname.java

一个信息发布系统 基于jsp+servlet+tomcat 用户分管理员跟普通用户 普通用户有发布信息 查询信息 修改信息 回复信息 管理员拥有普通用户的功能 此外还具有删除信息 管理信息的回复的功能

package control;
import java.io.IOException;
import javax.servlet.http.*;
import javax.servlet.*;


public class validateRegName extends ShowCategory
{
	public void doGet(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException
    {
          String RegName = req.getParameter("RegName");
          System.out.println("The RegName is:" + RegName);
          String result = "";
          boolean isExit;
          UserCom com = new UserCom("jdbc:mysql://localhost/mybbs","root", "root123");
          isExit = com.isExitName(RegName);
          
          if(isExit)
          {
        	  result = "<Results><Result>true</Result></Results>";
          }
          else
        	  result = "<Results><Result>false</Result></Results>";
          String responseHtml = result.toString();
          res.setCharacterEncoding( "utf-8");
          res.setContentType("text/xml;charset=utf-8");
          res.setHeader("Pragma","No-cache"); 
          res.setHeader("Cache-Control","no-cache"); 
          res.setDateHeader("Expires", 0); 
          res.getWriter().write(responseHtml);
    }
	public void doPost(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException
	{
		doGet(req,res);
	}
}