📄 getmessages.java

📁 可以让初学者有一个感性的认识

💻 JAVA

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

public class GetMessages extends HttpServlet
{
	public void init(ServletConfig config) throws ServletException
	{
		super.init(config);
	}

	public void doPost(HttpServletRequest request,HttpServletResponse response) throws IOException,ServletException
	{
		PrintWriter out=response.getWriter();
		response.setContentType("text/html;charset=GB2312");
		out.println("<HTML><BODY>");

		out.println("<BR>Protocol:");
		String protocol=request.getProtocol();
		out.println(protocol);

		out.println("<BR>Accept servlet:");
		String path=request.getServletPath();
		out.println(path);

		out.println("<BR>message Length:");
		int length=request.getContentLength();
		out.println(length);

		out.println("<BR>Method:");
		String method=request.getMethod();
		out.println(method);

		out.println("<BR>User-Agent:");
		String header1=request.getHeader("User-Agent");
		out.println(header1);

		out.println("<BR>accept:");
		String header2=request.getHeader("accept");
		out.println(header2);

		out.println("<BR>Host:");
		String header3=request.getHeader("Host");
		out.println(header3);

		out.println("<BR>accept-encoding:");
		String header4=request.getHeader("accept-encoding");
		out.println(header4);

		out.println("<BR>client IP:");
		String IP=request.getRemoteAddr();
		out.println(IP);

		out.println("<BR> client name:");
		String clientName=request.getRemoteHost();
		out.println(clientName);

		out.println("<BR>server name:");
		String serverName=request.getServerName();
		out.println(serverName);

		out.println("<BR>ServerPort:");
		int serverPort=request.getServerPort();
		out.println(serverPort);

		out.println("<BR>Parameter Names:");
		Enumeration enum=request.getParameterNames();
		while(enum.hasMoreElements())
		{
			String s=(String)enum.nextElement();
			out.print(s);
		}

		out.println("<BR>text:");
		String str=request.getParameter("boy");
		out.println(str);

		out.println("</BODY></HTML>");
	}

	public void doGet(HttpServletRequest request,HttpServletResponse response) throws IOException,ServletException
	{
		doPost(request,response);
	}
}

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