login.java~9~

Java+Web+会话+聊天室希望对兄弟们有点儿帮助

package pchat;

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

public class Login extends HttpServlet {
    LoginData ld=new LoginData();
    private static final String CONTENT_TYPE = "text/html; charset=GBK";

    //Initialize global variables
    public void init() throws ServletException {
    }

    //Process the HTTP Get request
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        response.setContentType(CONTENT_TYPE);
        PrintWriter out = response.getWriter();
       request.setCharacterEncoding("GBK");
       String name=null;
       name=request.getParameter("txtName");
       String pass=null;
       pass=request.getParameter("txtPassword");
       String rpass=null;
       rpass=request.getParameter("txtRPassword");
       if(name.equals("")){
           response.sendRedirect("Login.html");
           return;
       }
       if(ld.Ishave(name)==true){//判断用户名是否存在
           response.sendRedirect("error.html");
           return;
       }
       if(pass.equals("")||rpass.equals("")){
           response.sendRedirect("Login.html");
           return;
       }
       if(!pass.equals(rpass)){
           response.sendRedirect("Login.html");
           return;
       }
           ld.noteData(name,pass);
           System.out.println("来了"+name+pass);
           response.sendRedirect("Sm.html");
        out.close();
    }

    //Process the HTTP Post request
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        doGet(request, response);
    }

    //Clean up resources
    public void destroy() {
    }
}