📄 login.java~8~

📁 使用J2EE实现了软件园的下载和上传功能
💻 JAVA~8~
字号:
package software;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import javax.naming.*;
import javax.rmi.*;
public class login extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=GB2312";

    //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();
        out.println("<html>");
          out.println("<head><title>ServletLogin</title></head>");
          out.println("<body bgcolor=\"#ffffff\">");
          out.println("<form method=POST action=login>");
          out.println("<table border=1 width=30% align=center>");
          out.println(
                  "<tr bgcolor=#EFEFEF><td colspan=2 align=center>用户登录</td></tr>");
          out.println("<tr><td width=30%>用户名:</td><td width=70%><input type=text name=userName size=10></td></tr>");
          out.println(
                  "<tr><td>密 码:</td><td><input type=password name=password size=10></td></tr>");
          out.println("<tr><td align=center><input type=submit value=确定 name=BT1><input type=reset value=重置 name=BT2></td></tr>");
          out.println("</table>");
          out.println("</form>");

          out.println("</body>");
          out.println("</html>");
          out.close();

    }

    //Process the HTTP Post request
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        response.setContentType(CONTENT_TYPE);
        PrintWriter out = response.getWriter();
        String userName = request.getParameter("userName");
        System.out.println(userName);
         String password = request.getParameter("password");
         System.out.println(password);
         int num = 0;
         try {
              Context ic = new InitialContext();
              Object obj = ic.lookup("usersRemote");
              usersRemoteHome home = (usersRemoteHome)PortableRemoteObject.narrow(obj,usersRemoteHome.class);
              Collection c=home.findLogin(userName,password);
              java.util.Iterator i = c.iterator();
              while (i.hasNext()) {
                  num += 1;
             }
         } catch (Exception ex) {
                   ex.printStackTrace();
         }
         if (num >= 1) {
            response.sendRedirect("uploadMain.jsp");
         } else {
            out.println("<script language=javascript type=''>alert('用户名或密码错误，请重新登录！');</script>");
             response.sendRedirect("index.jsp");
         }

    }

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