Question

我花了很多时间学习本教程：http://www.mybringback.com/android-sdk/13239/android-mysql-php-json-part-6-json-parsing-and-android-design/

然后我意识到DefaultHttpClient和namevaluepair都是折旧的。

我想知道我是否可以找到这个代码的替代品。

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;

import android.content.ContentValues;
import android.util.Log;
import android.widget.Toast;

public class JSONParser {

    static InputStream is = null;
    static JSONObject jObj = null;
    static String json = "";

    // constructor
    public JSONParser() {

    }

    // function get json from url
    // by making HTTP POST or GET mehtod
    public JSONObject makeHttpRequest(String url, String method,
            ContentValues params) {

        // Making HTTP request
        try {

            // check for request method
            if(method == "POST"){
                // request method is POST
                // defaultHttpClient
                DefaultHttpClient httpClient = new DefaultHttpClient();
                HttpPost httpPost = new HttpPost(url);
                httpPost.setEntity(new UrlEncodedFormEntity(params));

                HttpResponse httpResponse = httpClient.execute(httpPost);
                HttpEntity httpEntity = httpResponse.getEntity();
                is = httpEntity.getContent();

            }
            else if(method == "GET"){
                // request method is GET
                DefaultHttpClient httpClient = new DefaultHttpClient();
                String paramString = URLEncodedUtils.format(params, "utf-8");
                url += "?" + paramString;
                HttpGet httpGet = new HttpGet(url);

                HttpResponse httpResponse = httpClient.execute(httpGet);
                HttpEntity httpEntity = httpResponse.getEntity();
                is = httpEntity.getContent();
            }           

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    is, "iso-8859-1"), 8);
            StringBuilder sb = new StringBuilder();
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
            is.close();
            json = sb.toString();

            Log.e("JSON Parser", sb.toString());

        } catch (Exception e) {
            Log.e("Buffer Error", "Error converting result " + e.toString());
        }

        // try parse the string to a JSON object
        try {
            jObj = new JSONObject(json);
        } catch (JSONException e) {
            Log.e("JSON Parser", "Error parsing data " + e.toString());
        }

        // return JSON String
        return jObj;

    }
}

Answer 1

你正在做的事情已成为过去。转到谷歌自己的排球库进行网络通话。它非常简单，您不再需要AsyncTask。

只需从here下载库，然后将其作为项目中的模块导入。简单。

注意：此库中还有一个GsonRequest类，它将使用您获得的数据设置模型类。您甚至不需要进行任何解析，因此可以节省大量时间。

Answer 2

你应该怎么做

使用此

HttpClient client = HttpClientBuilder.create().build();

演示示例

    HttpClient client = HttpClientBuilder.create().build();
    HttpGet request = new HttpGet("URL");
    HttpResponse response = client.execute(request);

阅读HttpClientBuilder.

修改

您可以尝试使用HttpURLConnection。

<强>样本

URL url = new URL("http://www.android.com/"); HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); try { InputStream in = new BufferedInputStream(urlConnection.getInputStream()); readStream(in); } finally { urlConnection.disconnect(); }

Answer 3

您可以使用HttpURLConnection或开源Volley

Answer 4

在apache的文档中，它说使用HttpClientBuilder，你可以从下面的链接查看

http://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/org/apache/http/impl/client/DefaultHttpClient.html

DefaultHttpClient已弃用

4 个答案:

你应该怎么做