Question

我正在尝试将我的应用转换为使用WebAPI和令牌身份验证。我也正在离开Apache http并使用凌空。

下面我有一个名为NetworkManager的类来处理凌空请求。在我的主Activity中有一个登录按钮，它从networkManager类调用getAuthenicationTokens方法。我使用了customeListener将响应转发回调用Activity。

CustomListener：

public interface CustomListener<T>
{
    public void getResult(T object);
}

的活动：

buttonLogin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {



                NetworkManager.getInstance().getAuthenticationTokens(null, new CustomListener<JSONObject>()
                {
                    @Override
                    public void getResult(JSONObject result)
                    {

                        Log.e(TAG, "Json object length = " + result.length());

                    }
                });

NetworkManager中的方法：

public void getAuthenticationTokens(Object param1, final CustomListener<JSONObject> listener)
    {

        //String url = prefixURL + "this/request/suffix";
        String url = "https://lw.xxx.co.uk/connect/token";

        Map<String, Object> jsonParams = new HashMap<>();


        jsonParams.put("scope", "openid email phone profile offline_access roles");
        jsonParams.put("resource", "window.location.origin");
        jsonParams.put("grant_type", "password");
        jsonParams.put("username", "support@xxx.com");
        jsonParams.put("password", "tempPxxx");

        JsonObjectRequest request = new JsonObjectRequest(Request.Method.POST, url, new JSONObject(jsonParams),
                new Response.Listener<JSONObject>()
                {
                    @Override
                    public void onResponse(JSONObject response)
                    {
                        Log.d(TAG + ": ", "somePostRequest Response : " + response.toString());
                        if(null != response.toString())
                            listener.getResult(response);
                    }
                },

                new Response.ErrorListener()
                {
                    @Override
                    public void onErrorResponse(VolleyError error)
                    {
                        if (null != error.networkResponse)
                        {
                            Log.d(TAG + ": ", "Error Response code: " + error.networkResponse.statusCode);
                            listener.getResult(null);
                        }
                    }
                }){
                    @Override
                    public Map<String, String> getHeaders() throws AuthFailureError {
                        Map<String,String> params =  super.getHeaders();
                        if(params==null)params = new HashMap<>();
                        params.put("Content-Type","application/x-www-form-urlencoded");
                        //..add other headers
                        return params;
                    }
        };



        requestQueue.add(request);
    }

我尝试使用以下帖子（通过Subhash回答）为请求添加标题，但是我添加标题时出现以下异常。

link

例外：

NetworkDispatcher.run: Unhandled exception java.lang.UnsupportedOperationException
                                                                            java.lang.UnsupportedOperationException
                                                                                       at java.util.AbstractMap.put(AbstractMap.java:203)
                                                                                       at loneworker.carefreegroup.com.loneworker.NetworkManager$3.getHeaders(NetworkManager.java:100)
                                                                                       at com.android.volley.toolbox.HurlStack.performRequest(HurlStack.java:93)
                                                                                       at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:96)
                                                                                       at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:112)

有没有人知道添加标题的问题是什么。例外是第100行，这里是

params.put("Content-Type","application/x-www-form-urlencoded");

Answer 1

你试过了吗？

Map<String, String> params = new HashMap<>(super.getHeaders());

我测试了它，它对我有用。

Volley java.lang.UnsupportedOperationException

1 个答案: