HttpPost与cookies请求 [英] HttpPost request with cookies

问题描述

我要提出两个请求到服务器。在第一个请求我送参数用户ID = 1，服务器返回一个cookie _session_ID。现在我不带参数发送一个第二请求，结果应该是相同的第一次。但是，cookie不会发送。为什么呢？

这是我的code：

 公共类服务器
{
    静态的HttpClient HttpClient的;
    静态HttpPost httppost;
    静态字符串JsonString;
    静态的Htt presponse响应;
    静态列表＆LT;＆的NameValuePair GT; namevaluepairs中;
    静态的CookieStore的CookieStore;
    静态的HttpContext localContext;
    静态列表＆LT; Cookie和GT;曲奇饼;
    静态INT cookieSize;    公共静态无效清除（）
    {
        尝试
        {
            的CookieStore =新BasicCookieStore（）;
            localContext =新BasicHttpContext（）;
            localContext.setAttribute（ClientContext.COOKIE_STORE，的CookieStore）;            HttpClient的=新DefaultHttpClient（）;
            httppost =新HttpPost（http://mobile-app-storage.herokuapp.com/test）;
            namevaluepairs中=新的ArrayList＆LT;＆的NameValuePair GT; （2）;
            nameValuePairs.add（新BasicNameValuePair（用户ID，1））;
            httppost.setEntity（新UrlEn codedFormEntity（namevaluepairs中））;
            响应= httpclient.execute（httppost，localContext）;
            JsonString = ReadFromServer（response.getEntity（）的getContent（））;            Log.e（请求，1）;
            饼干= cookieStore.getCookies（）;
            cookieSize = cookies.size（）;
            的for（int i = 0; I＆LT; cookieSize;我++）
            {
                Log.v（曲奇+ I，名称：+ cookies.get（ⅰ）的ToString（））;
            }            //没有用户ID第二个请求。必须是相同的结果第一            HttpClient的=新DefaultHttpClient（）;
            httppost =新HttpPost（http://mobile-app-storage.herokuapp.com/test）;
            nameValuePairs.clear（）;
            httppost.setEntity（新UrlEn codedFormEntity（namevaluepairs中））;
            响应= httpclient.execute（httppost）;
            JsonString = ReadFromServer（response.getEntity（）的getContent（））;            Log.e（请求，2）;
            饼干= cookieStore.getCookies（）;
            cookieSize = cookies.size（）;
            的for（int i = 0; I＆LT; cookieSize;我++）
            {
                Log.v（曲奇+ I，名称：+ cookies.get（ⅰ）的ToString（））;
            }
        }
        赶上（Throwable的五）{Log_.Error（E）;}
    }
}
 

解决方案

在第二个电话，你不这样做。

  httpclient.execute（httppost，localContext）;
 

I need to make two requests to the server. In the first request I send parameter userID = 1 and the server returns a cookie _session_ID. Now I send a second request with no parameters and the result should be the same as the first time. But the cookie isn't sent. Why?

This is my code:

public class Server
{
    static HttpClient   httpclient;
    static HttpPost     httppost;
    static String       JsonString;
    static HttpResponse response;
    static List <NameValuePair> nameValuePairs;
    static CookieStore cookieStore;
    static HttpContext localContext;
    static List<Cookie> cookies;
    static int cookieSize;

    public static void Clear()
    {
        try
        {
            cookieStore    = new BasicCookieStore();
            localContext   = new BasicHttpContext();    
            localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);

            httpclient     = new DefaultHttpClient();
            httppost       = new HttpPost("http://mobile-app-storage.herokuapp.com/test");  
            nameValuePairs = new ArrayList <NameValuePair> (2);
            nameValuePairs.add(new BasicNameValuePair("userID",    "1"));
            httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
            response       = httpclient.execute(httppost, localContext);            
            JsonString = ReadFromServer(response.getEntity().getContent());

            Log.e("Request", "1");
            cookies    = cookieStore.getCookies();
            cookieSize = cookies.size();
            for (int i = 0; i < cookieSize; i++)
            {
                Log.v("Cookie "+ i, "name: "+cookies.get(i).toString());
            }

            // Second request without userID. Must be same result as first

            httpclient     = new DefaultHttpClient();
            httppost       = new HttpPost("http://mobile-app-storage.herokuapp.com/test");  
            nameValuePairs.clear();
            httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
            response       = httpclient.execute(httppost);          
            JsonString = ReadFromServer(response.getEntity().getContent());

            Log.e("Request", "2");
            cookies    = cookieStore.getCookies();
            cookieSize = cookies.size();
            for (int i = 0; i < cookieSize; i++)
            {
                Log.v("Cookie "+ i, "name: "+cookies.get(i).toString());
            }
        }
        catch (Throwable e) {Log_.Error(e);}
    }
}

解决方案

In the second call you don't do

httpclient.execute(httppost, localContext);

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