package core.util;

import java.io.IOException;
import java.util.Enumeration;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ServletRequestAndServletResponseUtil {
	
	public static void showResponse(HttpServletResponse response){
		System.out.println("***response:	"+response);
		System.out.println(response.getBufferSize());//8192
		System.out.println(response.getCharacterEncoding());//ISO-8859-1
		System.out.println(response.getContentType());
		System.out.println(response.getClass());//class org.apache.catalina.connector.ResponseFacade
		System.out.println(response.getLocale());//zh_CN
		//System.out.println(response.getOutputStream());
		//System.out.println(response.getWriter()); //此方法会导致页面乱码,是未设置编码格式吗?
		//response.getWriter().write(1);
	}
		public static void showRequest(HttpServletRequest request){
		System.out.println("***request:	"+request);
		
		//本次请求路径: goLoginView.do?type=ipad,url中的type
		Object param = request.getParameter("type");
		System.out.println("getParameter():	"+param);
	
		request.setAttribute("attr1", "程序内部传输,先setAttribute然后getAttribute");
		Object attribute2 = request.getAttribute("attr1");
		System.out.println("getAttribute():	"+attribute2);
		
		Enumeration<?> e = request.getAttributeNames();
			System.out.println("getAttributeNames():");
			while (e.hasMoreElements()) {
				Object obj = (Object) e.nextElement();
				System.out.println(obj);
			}
			
		String authType = request.getAuthType();
		System.out.println("getAuthType():	" + authType);
		
		String characterEncoding = request.getCharacterEncoding();
		System.out.println("getCharacterEncoding():	"+characterEncoding);
		
		int length = request.getContentLength();
		System.out.println("getContentLength():	"+length);
		
		String contentType = request.getContentType();
		System.out.println("getContentType():	"+contentType);
		
		String contextPath = request.getContextPath();
		System.out.println("getContextPath():	"+contextPath);
		
		Cookie[] array = request.getCookies();
		System.out.println("getCookies():	"+array);
		for (Cookie cookie : array) {
			System.out.println("cookie:	"+cookie);
			System.out.println(cookie.getClass());
			System.out.println(cookie.getVersion());
			//...
		}
		
		long dh = request.getDateHeader("");
		System.out.println("getDateHeader()	"+dh);
		
		String h = request.getHeader("");
		System.out.println("getHeader(): "+h);
		
		Enumeration<?> hn = request.getHeaderNames();
		System.out.println("getHeaderNames():	"+hn);
		while (hn.hasMoreElements()) {
			Object obj = (Object) hn.nextElement();
			System.out.println(obj);
		}
		
		Enumeration<?> hs = request.getHeaders("");
		System.out.println("getHeaders(): "+hs);
		while (hs.hasMoreElements()) {
			Object object = (Object) hs.nextElement();
			System.out.println(object);
			
		}
		
		//异常了:Request processing failed; nested exception is java.lang.IllegalStateException: getInputStream() has already been called for this request
		//ServletInputStream  in = request.getInputStream();
		//System.out.println(in);
		
//		request.getIntHeader("");
		
		//主机名  ip 端口
		System.out.println(request.getLocalAddr());
		System.out.println(request.getLocalPort());
		System.out.println(request.getLocalName());
		
		System.out.println(request.getLocale());
		System.out.println(request.getLocales());
		
		System.out.println(request.getMethod());
		System.out.println(request.getPathInfo());
		System.out.println(request.getPathTranslated());
		System.out.println(request.getProtocol());
		System.out.println(request.getParameterMap());
		System.out.println(request.getParameterNames());
		System.out.println(request.getParameterValues(""));
		
		System.out.println(request.getQueryString());//type=ipad
//		System.out.println(request.getRealPath(""));
		System.out.println(request.getRemoteAddr());//127.0.0.1
		System.out.println(request.getRemoteHost());//127.0.0.1
		System.out.println(request.getRemotePort());//52892,每次都不一样
		System.out.println(request.getRemoteUser());
		
		System.out.println(request.getRequestedSessionId());//跟session有关系吗?CA8DC4AD45C30B7488FBE1A8CDB93CA0
		System.out.println(request.getRequestURI());///Demo-Live-Spring-MVC_HandlerInterceptor/goLoginView.do
		try {
			System.out.println(request.getReader());
		} catch (IOException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}
//		System.out.println(request.getRequestDispatcher(""));
		System.out.println(request.getRequestURL()); //http://localhost:8080/Demo-Live-Spring-MVC_HandlerInterceptor/goLoginView.do
		
		System.out.println(request.getScheme());//http
		System.out.println(request.getServerName());//localhost
		System.out.println(request.getServerPort());//8080
		System.out.println(request.getServletPath());//请求方法/goLoginView.do
		System.out.println(request.getSession());
//		System.out.println(request.getSession(create));
		
		System.out.println(request.getUserPrincipal());
	}
}