package www.tydic.com.util;import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Map;/****/
public class HttpUtils {/** Function  :   發送Post請求到服務器* Param     :   params請求體內容，encode編碼格式*/public static String submitPostData(String strUrlPath,String params, String encode) {byte[] data = params.getBytes();try {URL url = new URL(strUrlPath);HttpURLConnection httpURLConnection = (HttpURLConnection)url.openConnection();httpURLConnection.setConnectTimeout(3000);     //設置連接超時時間httpURLConnection.setDoInput(true);                  //打開輸入流，以便從服務器獲取數據httpURLConnection.setDoOutput(true);                 //打開輸出流，以便向服務器提交數據httpURLConnection.setRequestMethod("POST");     //設置以Post方式提交數據httpURLConnection.setUseCaches(false);               //使用Post方式不能使用緩存httpURLConnection.setInstanceFollowRedirects(true);//設置請求體的類型是文本類型httpURLConnection.setRequestProperty("Content-Type", "application/json");httpURLConnection.connect();httpURLConnection.setConnectTimeout(10000);DataOutputStream dataOutputStream = new DataOutputStream(httpURLConnection.getOutputStream());dataOutputStream.write(params.getBytes());dataOutputStream.flush();//獲得輸出流，向服務器寫入數據OutputStream outputStream = httpURLConnection.getOutputStream();outputStream.write(data);int response = httpURLConnection.getResponseCode();            //獲得服務器的響應碼if(response == HttpURLConnection.HTTP_OK) {InputStream inptStream = httpURLConnection.getInputStream();System.out.println("=================返回數據======================");String resutStr = dealResponseResult(inptStream);String decresultStr = DesEncryptUtil.decrypt(resutStr);return decresultStr;//處理服務器的響應結果}} catch (IOException e) {e.printStackTrace();}return "";}/** Function  :   封裝請求體信息* Param     :   params請求體內容，encode編碼格式*/public static StringBuffer getRequestData(Map<String, String> params, String encode) {StringBuffer stringBuffer = new StringBuffer();        //存儲封裝好的請求體信息try {for(Map.Entry<String, String> entry : params.entrySet()) {stringBuffer.append(entry.getKey()).append("=").append(URLEncoder.encode(entry.getValue(), encode)).append("&");}stringBuffer.deleteCharAt(stringBuffer.length() - 1);    //刪除最后的一個"&"} catch (Exception e) {e.printStackTrace();}return stringBuffer;}/** Function  :   處理服務器的響應結果（將輸入流轉化成字符串）* Param     :   inputStream服務器的響應輸入流*/public static String dealResponseResult(InputStream inputStream) {String resultData = null;      //存儲處理結果ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();byte[] data = new byte[1024];int len = 0;try {while((len = inputStream.read(data)) != -1) {byteArrayOutputStream.write(data, 0, len);}} catch (IOException e) {e.printStackTrace();}resultData = new String(byteArrayOutputStream.toByteArray());return resultData;}}

在項目里如何使用：

// TODO: http request.String account = loginAccount.getText().toString().trim();String password = loginPassword.getText().toString().trim();Map<String, String> paramsMap = new HashMap<String, String>();paramsMap.put("login_nbr", account);paramsMap.put("login_type", Constant.LOGIN_TYPE);paramsMap.put("pwd", password);Gson gson = new Gson();String all =  gson.toJson(paramsMap);all = DesEncryptUtil.encrypt(all);String resultData = HttpUtils.submitPostData(Constant.APP_PAHT_LOGIN, all, "UTF-8");if (resultData==""){resultData="";}Message msg = new Message();Bundle datas = new Bundle();datas.putString("value", resultData);datas.putString("account", account);datas.putString("password", password);msg.setData(datas);handler.sendMessage(msg);

這樣就可以直接獲取數據了。對resultData數據如何處理如下：

可以使用Gson處理，我使用的Java的JSONObject處理工具

方法如下：

Handler handler = new Handler(){@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);Bundle data = msg.getData();String val = data.getString("value");String account = data.getString("account");String password = data.getString("password");if ("".equals(val)||val.equals(null)){Toast.makeText(MainActivity.this,"網絡鏈接錯誤，請重試",Toast.LENGTH_SHORT).show();return;}JSONObject resultJson = JSONObject.fromObject(val);String resultCode =  resultJson.get("CODE").toString();if (resultCode.equals(Constant.RESULT_CODE)){String CUST_NAME =  resultJson.get("CUST_NAME").toString();String RESULT =  resultJson.get("RESULT").toString();String CUST_ID =  resultJson.get("CUST_ID").toString();String ORG_CODE =  resultJson.get("ORG_CODE").toString();String ORG_ID =  resultJson.get("ORG_ID").toString();/*** SharedPreferences保存數據*/SharedPreferencesUtils.put(MainActivity.this,"account",account);SharedPreferencesUtils.put(MainActivity.this,"password",password);SharedPreferencesUtils.put(MainActivity.this,"CUST_NAME",CUST_NAME);SharedPreferencesUtils.put(MainActivity.this,"RESULT",RESULT);SharedPreferencesUtils.put(MainActivity.this,"CUST_ID",CUST_ID);SharedPreferencesUtils.put(MainActivity.this,"ORG_CODE",ORG_CODE);SharedPreferencesUtils.put(MainActivity.this,"ORG_ID",ORG_ID);/*** 登錄數據存儲完畢，進行界面跳轉*/Intent it = new Intent(MainActivity.this,MainBusinessActivity.class);startActivity(it);finish();}else {Toast.makeText(MainActivity.this,"賬號或密碼錯誤，請重試",Toast.LENGTH_SHORT).show();}Log.i("ssssss","請求結果:" + resultJson.toString());}};

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