Dump HttpServletRequest

RequestDumpUtil.java

package sample;

import java.util.Collections;
import java.util.Enumeration;
import java.util.stream.Collectors;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

public class RequestDumpUtil {

    private static final String INDENT = "\t";
    private static final String LF = "\n";

    public static void dumpRequest(StringBuilder sb, HttpServletRequest request) {
        sb.append(INDENT).append("[Class] ").append(request.getClass().getName()).append(", instance=" + request.toString().trim()).append(LF);
        sb.append(INDENT).append("[RequestedSessionId] ").append(request.getRequestedSessionId()).append(LF);
        sb.append(INDENT).append("[RequestURI] ").append(request.getRequestURI()).append(LF);
        sb.append(INDENT).append("[ServletPath] ").append(request.getServletPath()).append(LF);
        sb.append(INDENT).append("[CharacterEncoding] ").append(request.getCharacterEncoding()).append(LF);
        sb.append(INDENT).append("[ContentLength] ").append(request.getContentLength()).append(LF);
        sb.append(INDENT).append("[ContentType] ").append(request.getContentType()).append(LF);
        sb.append(INDENT).append("[Locale] ").append(request.getLocale()).append(LF);
        sb.append(INDENT).append("[Locales] ").append(Collections.list(request.getLocales()).stream().map(loc -> loc.toString()).collect(Collectors.joining(", "))).append(LF);
        sb.append(INDENT).append("[Scheme] ").append(request.getScheme()).append(LF);
        sb.append(INDENT).append("[isSecure] ").append(request.isSecure()).append(LF);
        sb.append(INDENT).append("[Protocol] ").append(request.getProtocol()).append(LF);
        sb.append(INDENT).append("[RemoteAddr] ").append(request.getRemoteAddr()).append(LF);
        sb.append(INDENT).append("[RemoteHost] ").append(request.getRemoteHost()).append(LF);
        sb.append(INDENT).append("[ServerName] ").append(request.getServerName()).append(LF);
        sb.append(INDENT).append("[ServerPort] ").append(request.getServerPort()).append(LF);
        sb.append(INDENT).append("[ContextPath] ").append(request.getContextPath()).append(LF);
        sb.append(INDENT).append("[Method] ").append(request.getMethod()).append(LF);
        sb.append(INDENT).append("[QueryString] ").append(request.getQueryString()).append(LF);
        sb.append(INDENT).append("[PathInfo] ").append(request.getPathInfo()).append(LF);
        sb.append(INDENT).append("[RemoteUser] ").append(request.getRemoteUser()).append(LF);
    }

    public static void dumpRequestHeader(StringBuilder sb, HttpServletRequest request) {
        Enumeration<String> hNames = request.getHeaderNames();
        while (hNames.hasMoreElements()) {
            String name = hNames.nextElement();
            sb.append(INDENT).append("[header] ").append(name).append("=").append(request.getHeader(name)).append(LF);
        }
    }

    public static void dumpRequestParameter(StringBuilder sb, HttpServletRequest request) {
        Enumeration<String> pNames = request.getParameterNames();
        while (pNames.hasMoreElements()) {
            String name = pNames.nextElement();
            sb.append(INDENT).append("[param] ").append(name).append("=").append(request.getParameter(name)).append(LF);
        }
    }

    public static void dumpRequestSessionAttribute(StringBuilder sb, HttpServletRequest request) {
        HttpSession session = request.getSession();
        if (session != null) {
            Enumeration<String> aNames = session.getAttributeNames();
            while (aNames.hasMoreElements()) {
                String name = aNames.nextElement();
                sb.append(INDENT).append("[session] ").append(name).append("=").append(session.getAttribute(name)).append(LF);
            }
        }
    }

}