android http請求訪問介面的封裝
阿新 • • 發佈：2018-12-05
轉自 https://www.cnblogs.com/you411305469/p/5212479.html
裡面介紹了實用的兩種
要特別注意，向php請求資料是表單型別的資料
application/x-www-form-urlencoded
import android.os.AsyncTask; import org.json.JSONObject; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.net.URLConnection; import java.util.Map; /** * @author Admin * @version $Rev$ * @des ${TODO} * @updateAuthor $Author$ * @updateDes ${TODO} */ public class HttpConnection { /** * 升級版介面 * * @param url * @param method * @param successCallback * @param failCallback * @param map */ public HttpConnection(final String url, final HttpMethod method, final SuccessCallback successCallback, final FailCallback failCallback, final Map<String, String> map) { new AsyncTask<Void, Void, String>() { @Override protected String doInBackground(Void... params) { StringBuffer sb = new StringBuffer(); String realString = ""; for (Map.Entry<String, String> entry : map.entrySet()) { sb.append(entry.getKey()).append("=") .append(entry.getValue()).append("&"); } realString = sb.toString().substring(0, sb.toString().length() - 1); try { URLConnection uc; switch (method) { case POST: uc = new URL(url).openConnection(); uc.setDoOutput(true); uc.setConnectTimeout(5000); BufferedWriter bw = new BufferedWriter( new OutputStreamWriter(uc.getOutputStream(), "utf-8")); bw.write(realString); bw.flush(); break; default: uc = new URL(url + "?" + realString).openConnection(); uc.setConnectTimeout(5000); uc.setRequestProperty("apikey", "2f50fafc573e93a725e277b073d9c5dd"); break; } System.out.println("Request url:" + uc.getURL()); System.out.println("Request date:" + realString); System.out.println("Result status:" + ((HttpURLConnection) uc).getResponseCode()); if (((HttpURLConnection) uc).getResponseCode() == 200) { BufferedReader br = new BufferedReader( new InputStreamReader(uc.getInputStream(), "utf-8")); StringBuffer result = new StringBuffer(); String line = ""; while ((line = br.readLine()) != null) { result.append(line); } System.out.println("Result:" + result); return result.toString(); } else { System.out.println("Result:" + ((HttpURLConnection) uc).getResponseCode()); } } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return null; } @Override protected void onPostExecute(String result) { if (result != null) { try { JSONObject json = new JSONObject(result); if (successCallback != null) { successCallback.onSuccess(result); } } catch (Exception e) { e.printStackTrace(); } } else { if (failCallback != null) { failCallback.onFail(); } } super.onPostExecute(result); } }.execute(); } /** * json型介面升級版 * * @param url * @param successCallback * @param failCallback * @param json map */ public HttpConnection(final String url, final SuccessCallback successCallback, final FailCallback failCallback, final String json) { new AsyncTask<Void, Void, String>() { @Override protected String doInBackground(Void... params) { try { HttpURLConnection uc = (HttpURLConnection) new URL(url) .openConnection(); //開啟輸出流 uc.setDoOutput(true); //開啟輸入流 uc.setDoInput(true); uc.setInstanceFollowRedirects(true); //post方式 uc.setRequestMethod("POST"); //超時 uc.setConnectTimeout(5000); //禁止使用快取 uc.setUseCaches(false); //接收字串型別資料用json uc.setRequestProperty("Accept", "application/json"); //請求的內容為表單型別資料 uc.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); //設定utf8 uc.setRequestProperty("Charset", "UTF-8"); // BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(uc.getOutputStream(),"utf-8")); // bw.write(json); // bw.flush(); /** * 請求資料（表單型別的或json型別的資料） */ OutputStreamWriter writer = new OutputStreamWriter(uc.getOutputStream()); //傳送引數 writer.write(json); //清理當前編輯器的左右緩衝區，並使緩衝區資料寫入基礎流 writer.flush(); System.out.println("Request url:" + uc.getURL()); System.out.println("Request date:" + json); //判斷接收資料，為json格式 if (uc.getResponseCode() == 200) { BufferedReader br = new BufferedReader( new InputStreamReader(uc.getInputStream(), "utf-8")); StringBuffer result = new StringBuffer(); String line = ""; while ((line = br.readLine()) != null) { result.append(line); } System.out.println("Result:" + result); return result.toString(); } else { System.out.println("uc.getResponseCode()==" + uc.getResponseCode()); System.out.println("uc.getResponseMessage()==" + uc.getResponseMessage()); } } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return null; } @Override protected void onPostExecute(String result) { if (result != null) { if (successCallback != null) { successCallback.onSuccess(result); } } else { if (failCallback != null) { failCallback.onFail(); } } super.onPostExecute(result); } }.execute(); } public static interface SuccessCallback { void onSuccess(String result); } public static interface FailCallback { void onFail(); } }
以上類需要用到HttpMethod
public enum HttpMethod {
POST,GET
}
以上的類就是http訪問介面的類，以下就來舉些例子吧：
/** * 積分商品列表 */ private void initData(int flag) { private String url = "http://192.168.1.11/xxx"; Map<String, String> params = new HashMap<String, String>(); params.put("types", "0"); params.put("isonsail", "0"); params.put("rowStart", "0"); params.put("rowEnd", "20"); new NetConnection(url, "post", new NetConnection.SuccessCallback() { @Override public void onSuccess(String result) { } }, new NetConnection.FailCallback() { @Override public void onFail() { } }, params); }
還有一種是json型的入參的：
/** * 發起全車診斷 介面描述：該介面用於向 iOBD裝置下發診斷指令 */ public void check() { JSONObject param = new JSONObject(); try { param.put("appkey", Config.getAppKey(this)); param.put("imei", Config.getImei(this)); } catch (Exception e) { e.printStackTrace(); } new NetConnection(Config.SERVER_URL + "diagnosis/trigge", new NetConnection.SuccessCallback() { @Override public void onSuccess(String result) { } }, new NetConnection.FailCallback() { @Override public void onFail() { } }, param.toString()); }