Android傳統HTTP請求get----post方式提交資料(包括亂碼問題)

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1.模仿登入頁面顯示（使用傳統方式是面向過程的）

使用Apache公司提供的HttpClient  API是物件導向的

(文章底部含有源碼的串連，包括了使用async架構)

（解決中文亂碼的問題。主要是對中文的資料進行URL編碼）

android手機預設的編碼是UTF-8

2.手機Demo

3.server

代碼例如以下：

server端的代碼：

//測試 android裝置登入public class Login extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {String username = request.getParameter("username");String password = request.getParameter("password");//對資料進行編碼，解決亂碼問題username  = new String(username.getBytes("ISO-8859-1"),"UTF-8");System.out.println("username--:"+username+"---password:"+password);if(username.equals("admin") && password.equals("123")){response.getOutputStream().write("登入成功".getBytes("UTF-8"));}else{response.getOutputStream().write("登入失敗".getBytes("UTF-8"));}}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {//request.setCharacterEncoding("UTF-8");doGet(request, response);}}

Androidclient

布局檔案的部分：

//測試 android裝置登入public class Login extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {String username = request.getParameter("username");String password = request.getParameter("password");//對資料進行編碼，解決亂碼問題username  = new String(username.getBytes("ISO-8859-1"),"UTF-8");System.out.println("username--:"+username+"---password:"+password);if(username.equals("admin") && password.equals("123")){response.getOutputStream().write("登入成功".getBytes("UTF-8"));}else{response.getOutputStream().write("登入失敗".getBytes("UTF-8"));}}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {//request.setCharacterEncoding("UTF-8");doGet(request, response);}}

Activity代碼部分：

（注意：android4.0之後訪問網路必須開子線程進行訪問，而且涉及到許可權。記得加上訪問網路的許可權

以下的代碼中，我寫入get和post兩種方式的線程請求。。

。。。。。

。。。

。。。慢慢體會

）

public class MainActivity extends AppCompatActivity {    private static final int SUCCESS = 0;    private static final int FAILE = 1;    private static final int NET_ERROR = 3;    private static final String TAG = "MainActivity";    EditText et_username;    EditText et_password;    TextView show_result;    String username;    String password;    final String path = "http://188.188.7.85/Android_Server/Login";    Handler handler = new Handler() {        @Override        public void handleMessage(Message msg) {            int what = msg.what;            switch (what) {                case SUCCESS:                    String data = (String) msg.obj;                    show_result.setText(data);                    break;                case FAILE:                    Toast.makeText(MainActivity.this, "串連server失敗", Toast.LENGTH_SHORT).show();                    break;                case NET_ERROR:                    Toast.makeText(MainActivity.this, "網路出現異常", Toast.LENGTH_SHORT).show();                    break;                default:                    break;            }        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        et_username = (EditText) findViewById(R.id.et_username);        et_password = (EditText) findViewById(R.id.et_password);        show_result = (TextView) findViewById(R.id.show_result);        username = et_username.getText().toString().trim();        password = et_password.getText().toString().trim();    }    public void login(View view) {        username = et_username.getText().toString().trim();        password = et_password.getText().toString().trim();        if (TextUtils.isEmpty(username) || TextUtils.isEmpty(password)) {            Toast.makeText(this, "username與password不可為空", Toast.LENGTH_SHORT).show();            return;        }        //使用傳統get方式的請求server//        new Thread_get().start();        //使用傳統的post方式請求server        new Thread_post().start();    }    //傳統的post方式請求server端    class Thread_post extends Thread {        @Override        public void run() {            try {                URL url = new URL(path);                HttpURLConnection conn = (HttpURLConnection) url.openConnection();                //1.佈建要求方式                conn.setRequestMethod("POST");                conn.setConnectTimeout(5000); //設定串連的逾時事件是5秒                //2.組合資料,一定要將資料進行URL編碼                String commitData = "username="+URLEncoder.encode(username,"UTF-8")+"&password="+URLEncoder.encode(password,"UTF-8");                // 3. 指定content-type -實際上就是指定傳輸的資料類型                conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");                //4.指定content-length Content-Length: 資料的長度                conn.setRequestProperty("Content-Length", commitData.length() + "");                //5.開啟輸出資料流。告訴server，我要寫資料了                conn.setDoOutput(true);                //6.開始寫資料                OutputStream os = conn.getOutputStream();                os.write(commitData.getBytes());//                os.close();                int code = conn.getResponseCode();  //擷取返回的成功碼                Log.i(TAG, "code:---" + code);                if (code == 200) {                    //表示串連server成功返回資訊                    String data = ServerTools.getInfo(conn.getInputStream());                    Log.i(TAG, "data:---" + data);                    //使用訊息處理機制，將資料傳遞給主線程                    Message ms = new Message();                    ms.what = SUCCESS;                    ms.obj = data;                    handler.sendMessage(ms);                } else {                    //使用訊息處理機制，將資料傳遞給主線程                    Message ms = new Message();                    ms.what = FAILE;                    handler.sendMessage(ms);                }            } catch (Exception e) {                //使用訊息處理機制，將資料傳遞給主線程                Message ms = new Message();                ms.what = NET_ERROR;                handler.sendMessage(ms);                e.printStackTrace();            }        }    }    //傳統的get方式請求server端    class Thread_get extends Thread {        @Override        public void run() {            try {                String getPath = path +                        "?username=" + URLEncoder.encode(username, "UTF-8") +                        "&password=" + URLEncoder.encode(password, "UTF-8");                URL url = new URL(getPath);                HttpURLConnection conn = (HttpURLConnection) url.openConnection();                conn.setRequestMethod("GET");                conn.setConnectTimeout(5000); //設定串連的逾時事件是5秒                int code = conn.getResponseCode();  //擷取返回的成功碼                Log.i(TAG, "code:---" + code);                ;                if (code == 200) {                    //表示串連server成功返回資訊                    String data = ServerTools.getInfo(conn.getInputStream());                    Log.i(TAG, "data:---" + data);                    //使用訊息處理機制，將資料傳遞給主線程                    Message ms = new Message();                    ms.what = SUCCESS;                    ms.obj = data;                    handler.sendMessage(ms);                } else {                    //使用訊息處理機制，將資料傳遞給主線程                    Message ms = new Message();                    ms.what = FAILE;                    handler.sendMessage(ms);                }            } catch (Exception e) {                //使用訊息處理機制，將資料傳遞給主線程                Message ms = new Message();                ms.what = NET_ERROR;                handler.sendMessage(ms);                e.printStackTrace();            }        }    }}

工具類:

public class ServerTools {    //從服務端擷取流資料進行轉化成文字檔    public static String getInfo(InputStream in) {        //將資料流寫在記憶體中        ByteArrayOutputStream raf = new ByteArrayOutputStream();        String data = null;        try{            byte[] bt = new byte[1024];            int len =0 ;            while((len = in.read(bt)) != -1){                raf.write(bt,0,len);            }           data = raf.toString();        }catch (Exception e){            e.printStackTrace();        }        return data;    }}

Android的源碼已經放在github中：

傳統方式Demo地址：https://github.com/momxmo/HTTP_get_post

Apache提供的HttpClient API物件導向的方式Demo：https://github.com/momxmo/HttpClient_get_post

使用async-http-master流行架構進行http請求：https://github.com/momxmo/Http_android-async-http-master_Demo

????

Android傳統HTTP請求get----post方式提交資料(包括亂碼問題)