请求与响应

一、获取request变量

    String localAddr = request.getLocalAddr();
    String localName = request.getLocalName();
    int localPort = request.getLocalPort();

    String remoteAddr = request.getRemoteAddr();
    int port = request.getRemotePort();

    String serverName = request.getServerName();
    int serverPort = request.getServerPort();

    String contextPath = request.getContextPath();
    String servletPath = request.getServletPath();

    this.getServletContext().getServerInfo();
    this.getServletContext().getRealPath("");
    this.getServletContext().getInitParam(String ParamName);

    String method = request.getMethod();
    String requestURI = request.getRequestURI();

    Locale locale = request.getLocale();

    String protocol = request.getProtocol();
    String scheme = request.getScheme();

    String accept = request.getHeader("accept");
    String referer = request.getHeader("referer");
    String userAgent = request.getHeader("user-agent");