发送JSON由AsyncHttpClient POST请求到服务器 [英] Send JSON as a POST request to server by AsyncHttpClient

问题描述

我希望能够通过AsyncHttpClient发送JSON作为POST到我的本地服务器。我用这个方法：
公共无效后（上下文的背景下，字符串URL，HttpEntity实体，字符串的contentType，AsyncHtt presponseHandler ResponseHandler所）
 在我的code，但它不工作。这里是我的code：

 私人无效loginUser（）抛出JSONException，UnsupportedEncodingException {
    字符串登录= textLogin.getText（）的toString（）。
    。字符串密码= textPassword.getText（）的toString（）;    的JSONObject的JSONObject =新的JSONObject（）;
    如果（Utility.isNotNull（登录）及和放大器; Utility.isNotNull（密码））{
        jsonObject.put（用户名，登录）;
        jsonObject.put（密码，密码）;
        invokeWS（JSONObject的）;
    }
    其他{
        Toast.makeText（getApplicationContext（），Proszęwypełnićwszystkie波拉！，Toast.LENGTH_LONG）.show（）;
    }
}私人无效invokeWS（JSONObject的JSONObject的）抛出UnsupportedEncodingException {
    StringEntity实体=新StringEntity（jsonObject.toString（））;
    AsyncHttpClient客户端=新AsyncHttpClient（）;    Log.i（SER，HTTP：//+ Constants.address +：+ Constants.port +/ silownia_java / REST /登录/ AUTH+实体）;
    Log.i（SER，HTTP：//+ Constants.address +：+ Constants.port +/ silownia_java / REST /登录/ AUTH+ JSONObject的）;    client.post（getApplicationContext（），HTTP：//+ Constants.address +：+ Constants.port +/ silownia_java / REST /登录/身份验证，实体，应用/ JSON，新JsonHtt presponseHandler（）{
        @覆盖
        公共无效的onSuccess（INT状态code，头[]头，OBJ的JSONObject）{
            尝试{
                Log.i（SER，在这里！）;
                字符串登录= obj.getString（登录）;
                INT ID = obj.getInt（ID）;                //user.setUserId(obj.getInt(\"userid））;
            }赶上（JSONException E）{
                // TODO自动生成catch块
                Toast.makeText（getApplicationContext（），出现错误[服务器的JSON响应可能无效]！，Toast.LENGTH_LONG）.show（）;
                e.printStackTrace（）;
            }
        }        @覆盖
        公共无效onFailure处（INT状态code，头[]头，抛出的Throwable，JSONObject的errorResponse）{
            如果（状态code == 404）{
                Toast.makeText（getApplicationContext（），404  - 聂odnaleziono serwera！，Toast.LENGTH_LONG）.show（）;
            }否则如果（状态code == 500）{
                Toast.makeText（getApplicationContext（），500  -  COSposzło聂德宝希隆斯克斯拖serwera！，Toast.LENGTH_LONG）.show（）;
            }否则如果（状态code == 403）{
                Toast.makeText（getApplicationContext（），Podano niepoprawne丹麦人！，Toast.LENGTH_LONG）.show（）;
            }其他{
                Toast.makeText（getApplicationContext（），throwable.toString（），Toast.LENGTH_LONG）.show（）;
            }
        }
    }）;
}
 

我的日志看起来不错：

<$p$p><$c$c>http://MY_IP_ADDRESS:8080/silownia_java/rest/login/authorg.apache.http.entity.StringEntity@384d6a6d
HTTP：// MY_IP_ADDRESS：8080 / silownia_java / REST /登录/ AUTH {用户名：barni，密码：12345}

但我得到这样的错误：

  org.apache.http.client.Htt presponseException：不支持的媒体类型
 

Additionaly，我知道，服务器不会得到任何请求。那么，是什么原因可能是？

解决方案

我解决了这个问题，通过添加标题信息到我的实体对象。

  ByteArrayEntity实体=新ByteArrayEntity（jsonObject.toString（）的getBytes（UTF-8））;
entity.setContentType（新BasicHeader（HTTP.CONTENT_TYPE，应用/ JSON））;
 

I want to be able to send JSON as a POST to my localhost server by AsyncHttpClient. I'm using this method: public void post(Context context, String url, HttpEntity entity, String contentType, AsyncHttpResponseHandler responseHandler) in my code but it doesn't work. Here is my code:

private void  loginUser() throws JSONException, UnsupportedEncodingException {
    String login = textLogin.getText().toString();
    String password = textPassword.getText().toString();

    JSONObject jsonObject = new JSONObject();
    if(Utility.isNotNull(login) && Utility.isNotNull(password)) {
        jsonObject.put("username", login);
        jsonObject.put("password", password);
        invokeWS(jsonObject);
    }
    else{
        Toast.makeText(getApplicationContext(), "Proszę wypełnić wszystkie pola!", Toast.LENGTH_LONG).show();
    }
}

private void invokeWS(JSONObject jsonObject) throws UnsupportedEncodingException {
    StringEntity entity = new StringEntity(jsonObject.toString());
    AsyncHttpClient client = new AsyncHttpClient();

    Log.i("SER", "http://" + Constants.address + ":" + Constants.port + "/silownia_java/rest/login/auth" + entity);
    Log.i("SER", "http://" + Constants.address + ":" + Constants.port + "/silownia_java/rest/login/auth" + jsonObject);

    client.post(getApplicationContext(), "http://" + Constants.address + ":" + Constants.port + "/silownia_java/rest/login/auth", entity, "application/json", new JsonHttpResponseHandler() {
        @Override
        public void onSuccess(int statusCode, Header[] headers, JSONObject obj) {
            try {
                Log.i("SER", "HERE!");
                String login = obj.getString("login");
                int ID = obj.getInt("id");

                //user.setUserId(obj.getInt("userid"));
            } catch (JSONException e) {
                // TODO Auto-generated catch block
                Toast.makeText(getApplicationContext(), "Error Occured [Server's JSON response might be invalid]!", Toast.LENGTH_LONG).show();
                e.printStackTrace();
            }
        }

        @Override
        public void onFailure(int statusCode, Header[] headers, Throwable throwable, JSONObject errorResponse) {
            if (statusCode == 404) {
                Toast.makeText(getApplicationContext(), "404 - Nie odnaleziono serwera!", Toast.LENGTH_LONG).show();
            } else if (statusCode == 500) {
                Toast.makeText(getApplicationContext(), "500 - Coś poszło nie tak po stronie serwera!", Toast.LENGTH_LONG).show();
            } else if (statusCode == 403) {
                Toast.makeText(getApplicationContext(), "Podano niepoprawne dane!", Toast.LENGTH_LONG).show();
            } else {
                Toast.makeText(getApplicationContext(), throwable.toString(), Toast.LENGTH_LONG).show();
            }
        }
    });
}

My Logs looks ok:

http://MY_IP_ADDRESS:8080/silownia_java/rest/login/authorg.apache.http.entity.StringEntity@384d6a6d
http://MY_IP_ADDRESS:8080/silownia_java/rest/login/auth{"username":"barni","password":"12345"}

But i get such error:

org.apache.http.client.HttpResponseException: Unsupported Media Type

Additionaly, I know that server doesn't get any request. So, what the cause could be?

解决方案

I solved it, by adding header information to my entity object.

ByteArrayEntity entity = new ByteArrayEntity(jsonObject.toString().getBytes("UTF-8"));
entity.setContentType(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));

这篇关于发送JSON由AsyncHttpClient POST请求到服务器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！