Spring Cloud实战小贴士：Zuul处理Cookie和重定向

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
import org.apache.commons.lang.StringUtils;
import org.apache.http.client.utils.URIBuilder;
 
import com.netflix.util.Pair;
 
import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;
import java.util.Map;
 
public class CookieAndRedirectUtil {
 
    public static void addCookies(HttpServletResponse response, Map<String, String> cookies) {
        for (Map.Entry<String, String> entry : cookies.entrySet()) {
            Cookie cookie = new Cookie(entry.getKey(), entry.getValue());
            response.addCookie(cookie);
        }
    }
 
    public static void redirectToPath(HttpServletRequest request, HttpServletResponse response, String path) throws URISyntaxException {
        URIBuilder builder = new URIBuilder(path);
        Map<String, String[]> parameterMap = request.getParameterMap();
        for (Map.Entry<String, String[]> entry : parameterMap.entrySet()) {
            builder.setParameter(entry.getKey(), entry.getValue()[0]);
        }
        URI uri = builder.build();
        response.sendRedirect(uri.toString());
    }
 
    public static void removeCookies(HttpServletRequest request, HttpServletResponse response, List<String> cookiesToRemove) {
        for (String cookieName : cookiesToRemove) {
            Cookie cookie = new Cookie(cookieName, null);
            cookie.setMaxAge(0);
            cookie.setPath("/");
            response.addCookie(cookie);
        }
    }
 
    public static Pair<String, String> getRedirectUrl(HttpServletRequest request, String path) throws URISyntaxException {
        URIBuilder builder = new URIBuilder(path);
        Map<String, String[]> parameterMap = request.getParameterMap();
        for (Map.Entry<String, String[]> entry : parameterMap.entrySet()) {
            builder.setParameter(entry.getKey(), entry.getValue()[0]);
        }
        return new Pair<>(request.getScheme(), builder.build().toString());
    }
 
    public static void appendOrReplaceQueryParam(HttpServletRequest request, HttpServletResponse response, String paramName, String paramValue) throws URISyntaxException {
        URIBuilder builder = new URIBuilder(request.getRequestURL().toString());
        String query = request.getQueryString();
        if (StringUtils.isNotBlank(query)) {
            St