servlet

最新推荐文章于 2024-11-25 08:57:39 发布

最新推荐文章于 2024-11-25 08:57:39 发布 · 71 阅读

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一个比较简单的web登陆界面，主要有get和post用法

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginFromServlet extends HttpServlet
{
public static final long serialVersionUID = 5645445645454L;
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{

response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.println("<form name=\"from1\" method=\"post\" action=\"/webpro2/servlet/loginFrom\">");
out.println("用户名：<input type='text' name='username' size='20'>");
out.println("密码：<input type='password' name='password' size='20'>");
out.println("<input type='submit' name='submit' value='提交'>");
out.println("<input type='reset' name='reset' value='重置'>");
out.println("</form>");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
request.setCharacterEncoding("utf-8");
out.println("用户名："+request.getParameter("username")+"<br>");
out.println("密码："+request.getParameter("password")+"<br>");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
}