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RequestHeaders.java
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48 lines (39 loc) · 1.78 KB
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package headers;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;
@WebServlet("/RequestHeaders")
public class RequestHeaders extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<!Doctype HTML>");
out.println("<html>");
out.println("<head>");
out.println("<title>Request Headers</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>All Request Headers</h1>");
out.println("<p><b>Request Method: </b>" + request.getMethod());
out.println("<p><b>Request URI: </b>" + request.getRequestURI());
out.println("<p><b>Request Protocol: </b>" + request.getProtocol());
out.println("<p><b>Request ServerPort: </b>" + request.getServerPort());
out.println("<p><b>Request ServletPath: </b>" + request.getServletPath());
Enumeration<String> headerNames = request.getHeaderNames();
while (headerNames.hasMoreElements()) {
String headerName = headerNames.nextElement();
out.println("<p><b>" + headerName + ": </b>" + request.getHeader(headerName) + "</p>");
}
out.println("</body>");
out.println("</html>");
out.close();
}
}