GET and POST requests of the HttpUrlConnection class of Android,

GET and POST requests of the HttpUrlConnection class of Android,

1/** 2 * get method use 3 */4 private void httpGet () {5 new Thread () {6 @ Override 7 public void run (){
// Here, LOGIN is the spliced parameter 8 String path = LOGIN + "? Phone = 12345678900 & password = 123456 "; 9 URL url; 10 HttpURLConnection connection; 11 try {12 url = new URL (path); 13 connection = (HttpURLConnection) url. openConnection (); 14 connection. setConnectTimeout (4000); // sets the connection timeout of 15 connections. setRequestMethod ("GET"); // sets the Request Method 16 17 connection. setRequestProperty ("Content-Type", "application/x-www-form-urlencoded"); // sets the Content of the request body, the same is true by default everywhere, indicating that the requested text content is 18 19 int responseCode = connection. getResponseCode (); 20 if (responseCode = HttpURLConnection. HTTP_ OK) {21 InputStream inputStream = connection. getInputStream (); 22 final String s = stremToString (inputStream); 23 24 runOnUiThread (new Runnable () {25 @ Override26 public void run () {27 Toast. makeText (MainActivity. this, s, Toast. LENGTH_SHORT ). show (); 28} 29}); 30 inputStream. close (); 31} 32 33} catch (Exception e) {34 e. printStackTrace (); 35} 36} 37 }. start (); 38}

1/** 2 * post method 3 */4 private void httpPost (final Map <String, String> prams) {5 new Thread () {6 @ Override 7 public void run () {8 if (prams = null) {9 runOnUiThread (new Runnable () {10 @ Override11 public void run () {12 Toast. makeText (MainActivity. this, "parameter missing! ", Toast. LENGTH_SHORT ). show (); 13} 14}); 15 return; 16} 17 URL; 18 HttpURLConnection connection; 19 try {20 // concatenate the input request parameter 21 StringBuffer buffer = new StringBuffer (); 22 // read the parameter 23 for (map. entry <String, String> entry: prams. entrySet () {24 String key = entry. getKey (); 25 String value = entry. getValue (); 26 // The concatenation parameter, for example, phone = 12345678900 & password = 12345627 buffer. append (key + "=" + URLEncoder. e Ncode (value, "UTF-8") + "&"); 28} 29 // delete the end of the Splicing & Symbol 30 buffer. deleteCharAt (buffer. length ()-1); 31 // REGISTER is a test request address of my own server 32 url = new URL (REGISTER); 33 connection = (HttpURLConnection) url. openConnection (); 34 connection. setConnectTimeout (4000); 35 36 // The output stream here indicates the server's response to the Customer Service. The output stream is InPutStream37 // The input stream here indicates that the client inputs data to the server, that is, OutPutStream38 connection. setDoInput (true); // get the server response output stream. The default value is true. 39 conne is not required. Ction. setDoOutput (true); // you can write data to the service to obtain the input stream from the server. 40 connection. setRequestMethod ("POST"); 41 // The content requested to the server is set here. The text content is the 42 connection that can be set by default. setRequestProperty ("Content-Type", "application/x-www-form-urlencoded"); 43 // set the length of the Request body to 44 connections. setRequestProperty ("Content-Length", String. valueOf (buffer. toString (). getBytes (). length); 45 // write the Request body 46 connection to the server. getOutputStream (). write (buffer. toString (). getBytes (); 47 // get the Request status? HttpURLConnection. HTTP_ OK is the 48 int responseCode = connection. getResponseCode (); 49 if (responseCode = HttpURLConnection. HTTP_ OK) {50 InputStream inputStream = connection. getInputStream (); 51 final String result = stremToString (inputStream); 52 runOnUiThread (new Runnable () {53 @ Override54 public void run () {55 Toast. makeText (MainActivity. this, result, Toast. LENGTH_SHORT ). show (); 56} 57}); 58 inputStream. close (); 59} 60 61} catch (Exception e) {62 e. printStackTrace (); 63} 64} 65 }. start (); 66}

1/** 2 * convert the input stream to a String of 3*4 * @ param inputStream 5 * @ return 6 * @ throws IOException 7 */8 private String stremToString (InputStream inputStream) throws IOException {9 ByteArrayOutputStream bos = new ByteArrayOutputStream (); 10 if (inputStream! = Null) {11 int len; 12 byte [] bytes = new byte [1024]; 13 while (len = inputStream. read (bytes ))! =-1) {14 bos. write (bytes, 0, len); 15} 16 return bos. toString (); 17} else {18 return ""; 19} 20}

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