随后的 httpClient 调用返回初始调用结果

Question

我在一个名为 HttpHelper 的类中拥有这些方法。现在初始调用验证用户凭据并返回 true。这是意料之中的。下一个调用是注册用户。这似乎很顺利，没有打嗝，是返回新的用户 ID。它不再返回用户 ID，而是再次返回 true。几乎就像它被缓存并且只是从初始调用返回结果。有人对为什么会发生这种情况有任何想法吗？

private static CookieStore sCookieStore;

private static String invoke(HttpUriRequest request)
            throws ClientProtocolException, IOException {
        String result = null;
        DefaultHttpClient httpClient = new DefaultHttpClient();

        // restore cookie
        if (sCookieStore != null) {
            httpClient.setCookieStore((org.apache.http.client.CookieStore) sCookieStore);
        }

        //request.addHeader("Host", "localhost");
        HttpResponse response = httpClient.execute(request);

        StringBuilder builder = new StringBuilder();
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                response.getEntity().getContent()));
        for (String s = reader.readLine(); s != null; s = reader.readLine()) {
            builder.append(s);
        }
        result = builder.toString();
        Log.d(TAG, "result is ( " + result + " )");

        // store cookie
        sCookieStore = (CookieStore) ((AbstractHttpClient) httpClient).getCookieStore();
        return result;
    }

public static String invokeGet(String action, List<NameValuePair> params) {
        try {
            StringBuilder sb = new StringBuilder(API_URL);
            sb.append(action);
            if (params != null) {
                for (NameValuePair param : params) {
                    sb.append("?");
                    sb.append(param.getName());
                    sb.append("=");
                    sb.append(param.getValue());
                }
            }
            Log.d(TAG, "url is" + sb.toString());
            //HttpGet httpGet = new HttpGet(URLEncoder.encode(sb.toString(), "UTF-8"));
            HttpGet httpGet = new HttpGet(sb.toString());

            return invoke(httpGet);
        } catch (Exception e) {
            Log.e(TAG, e.toString());
        }

        return null;
    }

    public static String invokeGet(String action) {
        return invokeGet(action, null);
    }

这是我正在拨打的电话。如上所述，authResult 变量将导致字符串结果为真。 nextResult 应该保存用户 ID 值，而是像初始请求一样保存值 true：

String authResult = HttpHelper.invokeGet("<url to validate user>");

        if (this.URL.indexOf("register") > -1)      
            String nextResult = HttpHelper.invokeGet(this.URL);
        else
            String nextResult = HttpHelper.invokeGet(this.URL);

更新：添加到sCookieStore 变量中。

更新 2：添加通过 API (MVC .NET) 调用的方法：

authResult 变量会得到这个结果：

public bool Get(String userName, String userPassword)
        {
            Task<IdentityUser> iu = _repo.FindUser(userName, userPassword);

            if (iu != null)
            {
                FormsAuthentication.SetAuthCookie(userName, false);
                return true;
            }

            return false;
        }

nextResult 变量应该得到这个结果：

[HttpGet]
    [AllowAnonymous]
    public async Task<IHttpActionResult> RegisterUser(String userName, String userPassword, String huh)
    {
        UserModel userModel = new UserModel();
        userModel.ConfirmPassword = userPassword;
        userModel.UserName = userName;
        userModel.Password = userPassword;

        String userID = "";

        if (!ModelState.IsValid)
        {
            return BadRequest(ModelState);
        }

        IdentityResult result = await _repo.RegisterUser(userModel);

        IHttpActionResult errorResult = GetErrorResult(result);

        if (errorResult != null)
        {
            return errorResult;
        }
        else
        {
            Task<IdentityUser> iu = _repo.FindUser(userModel.UserName, userModel.Password);

            using (var context = new AuthContext())
            {
                var userStore = new UserStore<IdentityUser>(context);
                var userManager = new UserManager<IdentityUser>(userStore);

                userID = iu.Result.Id;

                result = await userManager.AddToRoleAsync(userID, "Users");

                errorResult = GetErrorResult(result);

                if (errorResult != null)
                {
                    return errorResult;
                }
            }
        }

        return Ok("userID:" + userID);
    }

Answer 1

看起来 authResult 将触发 invokeGet 2 次，给它相同的参数 (this.URL)。在 invokeGet 中，变量 sb 将是 this.URL 两次函数触发。

这让我有点好奇：

   // restore cookie
    if (sCookieStore != null) {
        httpClient.setCookieStore((org.apache.http.client.CookieStore) sCookieStore);
    }

然后在最后，

// store cookie
    sCookieStore = (CookieStore) ((AbstractHttpClient) httpClient).getCookieStore();

sCookieStore 是什么时候定义的？可能是 cookie 没有被正确处理，而您正在建立两个新的连接。如果获取和设置 cookie 是个问题，最好在 invoke 开始时获取 cookie，然后在末尾设置新的。