你用 retrofit 的话

http://stackoverflow.com/questions/21530307/set-custom-cookie-in-retrofit

 I had similar situation in my app. This solution works for me to retrieve cookies using Retrofit. MyCookieManager.java

import java.io.IOException;
import java.net.CookieManager;
import java.net.URI;
import java.util.List;
import java.util.Map;

class MyCookieManager extends CookieManager {

    @Override
    public void put(URI uri, Map<String, List<String>> stringListMap) throws IOException {
        super.put(uri, stringListMap);
        if (stringListMap != null && stringListMap.get("Set-Cookie") != null)
            for (String string : stringListMap.get("Set-Cookie")) {
                if (string.contains("userid")) {
                    //save your cookie here
                }
            }
    }
}
Here is how to set your cookie for future requests using RequestInterceptor:

 MyCookieManager myCookieManager = new MyCookieManager();
            CookieHandler.setDefault(myCookieManager);
 private static final RestAdapter REST_ADAPTER = new RestAdapter.Builder()
            .setEndpoint(API_URL)
            .setLogLevel(RestAdapter.LogLevel.FULL)
                    .setRequestInterceptor(new RequestInterceptor() {
                        @Override
                        public void intercept(RequestFacade requestFacade) {
                            String userId = ;//get your saved userid here
                            if (userId != null)
                                requestFacade.addHeader("Cookie", userId);
                        }
                    })
            .build();

https://github.com/square/retrofit/issues/503