Java tutorial
/** * 2011 Foxykeep (http://datadroid.foxykeep.com) * <p> * Licensed under the Beerware License : <br /> * As long as you retain this notice you can do whatever you want with this stuff. If we meet some * day, and you think this stuff is worth it, you can buy me a beer in return */ package com.dh.perfectoffer.event.framework.net.network; import android.content.Context; import android.text.TextUtils; import android.util.Base64; import android.util.Log; import com.dh.perfectoffer.event.framework.log.L; import com.dh.perfectoffer.event.framework.net.exception.ConnectionException; import com.dh.perfectoffer.event.framework.net.network.NetworkConnection.ConnectionResult; import com.dh.perfectoffer.event.framework.net.network.NetworkConnection.Method; import org.apache.http.HttpStatus; import org.apache.http.auth.UsernamePasswordCredentials; import org.apache.http.message.BasicNameValuePair; import org.apache.http.protocol.HTTP; import java.io.BufferedReader; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLEncoder; import java.security.KeyManagementException; import java.security.NoSuchAlgorithmException; import java.security.cert.X509Certificate; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Map.Entry; import java.util.Random; import java.util.zip.GZIPInputStream; import javax.net.ssl.HostnameVerifier; import javax.net.ssl.HttpsURLConnection; import javax.net.ssl.SSLContext; import javax.net.ssl.SSLSession; import javax.net.ssl.SSLSocketFactory; import javax.net.ssl.TrustManager; import javax.net.ssl.X509TrustManager; /** * Implementation of the network connection. * * @author Foxykeep */ public final class NetworkConnectionImpl { private static final String TAG = NetworkConnectionImpl.class.getSimpleName(); private static final String ACCEPT_CHARSET_HEADER = "Accept-Charset"; private static final String ACCEPT_ENCODING_HEADER = "Accept-Encoding"; private static final String AUTHORIZATION_HEADER = "Authorization"; private static final String LOCATION_HEADER = "Location"; private static final String UTF8_CHARSET = "UTF-8"; // ?MIME?? private final static String LINEND = "\r\n"; private final static String BOUNDARY = "---------------------------7da213758" + new Random().nextInt(1000); // ? private final static String PREFIX = "--"; // Default connection and socket timeout of 60 seconds. Tweak to taste. private static final int OPERATION_TIMEOUT = 60 * 1000; private NetworkConnectionImpl() { // No public constructor } /** * ??? * * @param paramText * @return */ private static String bulidFormText(ArrayList<BasicNameValuePair> paramText) { if (paramText == null || paramText.isEmpty()) return ""; StringBuffer sb = new StringBuffer(""); for (BasicNameValuePair bnvp : paramText) { sb.append(PREFIX).append(BOUNDARY).append(LINEND); sb.append("Content-Disposition:form-data;name=\"" + bnvp.getName() + "\"" + LINEND); sb.append(LINEND); sb.append(bnvp.getValue()); sb.append(LINEND); } return sb.toString(); } /** * Call the webservice using the given parameters to construct the request * and return the result. * * @param context * The context to use for this operation. Used to generate the * user agent if needed. * @param urlValue * The webservice URL. * @param method * The request method to use. * @param parameterList * The parameters to add to the request. * @param headerMap * The headers to add to the request. * @param isGzipEnabled * Whether the request will use gzip compression if available on * the server. * @param userAgent * The user agent to set in the request. If null, a default * Android one will be created. * @param postText * The POSTDATA text to add in the request. * @param credentials * The credentials to use for authentication. * @param isSslValidationEnabled * Whether the request will validate the SSL certificates. * @return The result of the webservice call. */ public static ConnectionResult execute(Context context, String urlValue, Method method, ArrayList<BasicNameValuePair> parameterList, HashMap<String, String> headerMap, boolean isGzipEnabled, String userAgent, String postText, UsernamePasswordCredentials credentials, boolean isSslValidationEnabled, String contentType, List<byte[]> fileByteDates, List<String> fileMimeTypes, int httpErrorResCodeFilte, boolean isMulFiles) throws ConnectionException { HttpURLConnection connection = null; try { // Prepare the request information if (userAgent == null) { userAgent = UserAgentUtils.get(context); } if (headerMap == null) { headerMap = new HashMap<String, String>(); } headerMap.put(HTTP.USER_AGENT, userAgent); if (isGzipEnabled) { headerMap.put(ACCEPT_ENCODING_HEADER, "gzip"); } headerMap.put(ACCEPT_CHARSET_HEADER, UTF8_CHARSET); if (credentials != null) { headerMap.put(AUTHORIZATION_HEADER, createAuthenticationHeader(credentials)); } StringBuilder paramBuilder = new StringBuilder(); if (parameterList != null && !parameterList.isEmpty()) { for (int i = 0, size = parameterList.size(); i < size; i++) { BasicNameValuePair parameter = parameterList.get(i); String name = parameter.getName(); String value = parameter.getValue(); if (TextUtils.isEmpty(name)) { // Empty parameter name. Check the next one. continue; } if (value == null) { value = ""; } paramBuilder.append(URLEncoder.encode(name, UTF8_CHARSET)); paramBuilder.append("="); paramBuilder.append(URLEncoder.encode(value, UTF8_CHARSET)); paramBuilder.append("&"); } } // ? ByteArrayOutputStream bos = new ByteArrayOutputStream(); // Create the connection object URL url = null; String outputText = null; switch (method) { case GET: case DELETE: String fullUrlValue = urlValue; if (paramBuilder.length() > 0) { fullUrlValue += "?" + paramBuilder.toString(); } url = new URL(fullUrlValue); connection = HttpUrlConnectionHelper.openUrlConnection(url); break; case PUT: case POST: url = new URL(urlValue); connection = HttpUrlConnectionHelper.openUrlConnection(url); connection.setDoOutput(true); if (paramBuilder.length() > 0 && NetworkConnection.CT_DEFALUT.equals(contentType)) { // form // ? // headerMap.put(HTTP.CONTENT_TYPE, // "application/x-www-form-urlencoded"); outputText = paramBuilder.toString(); headerMap.put(HTTP.CONTENT_TYPE, contentType); headerMap.put(HTTP.CONTENT_LEN, String.valueOf(outputText.getBytes().length)); } else if (postText != null && (NetworkConnection.CT_JSON.equals(contentType) || NetworkConnection.CT_XML.equals(contentType))) { // body // ? // headerMap.put(HTTP.CONTENT_TYPE, "application/json"); // //add ?json??? headerMap.put(HTTP.CONTENT_TYPE, contentType); // add // ?json??? headerMap.put(HTTP.CONTENT_LEN, String.valueOf(postText.getBytes().length)); outputText = postText; // Log.e("newtewewerew", // "1111application/json------------------outputText222222:::"+outputText+"-------method::"+method+"----paramBuilder.length() :"+paramBuilder.length()+"----postText:"+postText // ); } else if (NetworkConnection.CT_MULTIPART.equals(contentType)) { // String[] Array = urlValue.split("/"); /*Boolean isFiles = false; if (Array[Array.length - 1].equals("clientRemarkPic")) { isFiles = true; }*/ if (null == fileByteDates || fileByteDates.size() <= 0) { throw new ConnectionException("file formdata no bytes data", NetworkConnection.EXCEPTION_CODE_FORMDATA_NOBYTEDATE); } headerMap.put(HTTP.CONTENT_TYPE, contentType + ";boundary=" + BOUNDARY); String bulidFormText = bulidFormText(parameterList); bos.write(bulidFormText.getBytes()); for (int i = 0; i < fileByteDates.size(); i++) { long currentTimeMillis = System.currentTimeMillis(); StringBuffer sb = new StringBuffer(""); sb.append(PREFIX).append(BOUNDARY).append(LINEND); // sb.append("Content-Type:application/octet-stream" + // LINEND); // sb.append("Content-Disposition: form-data; name=\""+nextInt+"\"; filename=\""+nextInt+".png\"").append(LINEND);; if (isMulFiles) sb.append("Content-Disposition: form-data; name=\"files\";filename=\"pic" + currentTimeMillis + ".png\"").append(LINEND); else sb.append("Content-Disposition: form-data; name=\"file\";filename=\"pic" + currentTimeMillis + ".png\"").append(LINEND); // sb.append("Content-Type:image/png" + LINEND); sb.append("Content-Type:" + fileMimeTypes.get(i) + LINEND); // sb.append("Content-Type:image/png" + LINEND); sb.append(LINEND); bos.write(sb.toString().getBytes()); bos.write(fileByteDates.get(i)); bos.write(LINEND.getBytes()); } byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINEND).getBytes(); bos.write(end_data); bos.flush(); headerMap.put(HTTP.CONTENT_LEN, bos.size() + ""); } // L.e("newtewewerew", // "2222------------------outputText222222:::"+outputText+"-------method::"+method+"----paramBuilder.length() :"+paramBuilder.length()+"----postText:"+postText // ); break; } // Set the request method connection.setRequestMethod(method.toString()); // If it's an HTTPS request and the SSL Validation is disabled if (url.getProtocol().equals("https") && !isSslValidationEnabled) { HttpsURLConnection httpsConnection = (HttpsURLConnection) connection; httpsConnection.setSSLSocketFactory(getAllHostsValidSocketFactory()); httpsConnection.setHostnameVerifier(getAllHostsValidVerifier()); } // Add the headers if (!headerMap.isEmpty()) { for (Entry<String, String> header : headerMap.entrySet()) { connection.addRequestProperty(header.getKey(), header.getValue()); } } // Set the connection and read timeout connection.setConnectTimeout(OPERATION_TIMEOUT); connection.setReadTimeout(OPERATION_TIMEOUT); // Set the outputStream content for POST and PUT requests if ((method == Method.POST || method == Method.PUT)) { OutputStream output = null; try { if (NetworkConnection.CT_MULTIPART.equals(contentType)) { output = connection.getOutputStream(); output.write(bos.toByteArray()); } else { if (null != outputText) { L.e("newtewewerew", method + "------------------outputText:::" + outputText); output = connection.getOutputStream(); output.write(outputText.getBytes()); } } } finally { if (output != null) { try { output.close(); } catch (IOException e) { // Already catching the first IOException so nothing // to do here. } } } } // Log the request if (L.canLog(Log.DEBUG)) { L.d(TAG, "Request url: " + urlValue); L.d(TAG, "Method: " + method.toString()); if (parameterList != null && !parameterList.isEmpty()) { L.d(TAG, "Parameters:"); for (int i = 0, size = parameterList.size(); i < size; i++) { BasicNameValuePair parameter = parameterList.get(i); String message = "- \"" + parameter.getName() + "\" = \"" + parameter.getValue() + "\""; L.d(TAG, message); } L.d(TAG, "Parameters String: \"" + paramBuilder.toString() + "\""); } if (postText != null) { L.d(TAG, "Post data: " + postText); } if (headerMap != null && !headerMap.isEmpty()) { L.d(TAG, "Headers:"); for (Entry<String, String> header : headerMap.entrySet()) { L.d(TAG, "- " + header.getKey() + " = " + header.getValue()); } } } String contentEncoding = connection.getHeaderField(HTTP.CONTENT_ENCODING); int responseCode = connection.getResponseCode(); boolean isGzip = contentEncoding != null && contentEncoding.equalsIgnoreCase("gzip"); L.d(TAG, "Response code: " + responseCode); if (responseCode == HttpStatus.SC_MOVED_PERMANENTLY) { String redirectionUrl = connection.getHeaderField(LOCATION_HEADER); throw new ConnectionException("New location : " + redirectionUrl, redirectionUrl); } InputStream errorStream = connection.getErrorStream(); if (errorStream != null) { String error = convertStreamToString(errorStream, isGzip); // L.e("responseCode:"+responseCode+" httpErrorResCodeFilte:"+httpErrorResCodeFilte+" responseCode==httpErrorResCodeFilte:"+(responseCode==httpErrorResCodeFilte)); if (responseCode == httpErrorResCodeFilte) { // 400???... logResBodyAndHeader(connection, error); return new ConnectionResult(connection.getHeaderFields(), error, responseCode); } else { throw new ConnectionException(error, responseCode); } } String body = convertStreamToString(connection.getInputStream(), isGzip); // ?? ? if (null != body && body.contains("\r")) { body = body.replace("\r", ""); } if (null != body && body.contains("\n")) { body = body.replace("\n", ""); } logResBodyAndHeader(connection, body); return new ConnectionResult(connection.getHeaderFields(), body, responseCode); } catch (IOException e) { L.e(TAG, "IOException", e); throw new ConnectionException(e); } catch (KeyManagementException e) { L.e(TAG, "KeyManagementException", e); throw new ConnectionException(e); } catch (NoSuchAlgorithmException e) { L.e(TAG, "NoSuchAlgorithmException", e); throw new ConnectionException(e); } finally { if (connection != null) { connection.disconnect(); } } } private static void logResBodyAndHeader(HttpURLConnection connection, String body) { if (L.canLog(Log.VERBOSE)) { L.v(TAG, "Response body: "); int pos = 0; int bodyLength = body.length(); while (pos < bodyLength) { L.v(TAG, body.substring(pos, Math.min(bodyLength - 1, pos + 200))); pos = pos + 200; } L.v(TAG, "Response Header: "); Map<String, List<String>> headerFields = connection.getHeaderFields(); for (Entry<String, List<String>> en : headerFields.entrySet()) { L.v(TAG, "key=" + en.getKey() + ",value=" + en.getValue()); } } } private static String createAuthenticationHeader(UsernamePasswordCredentials credentials) { StringBuilder sb = new StringBuilder(); sb.append(credentials.getUserName()).append(":").append(credentials.getPassword()); return "Basic " + Base64.encodeToString(sb.toString().getBytes(), Base64.NO_WRAP); } private static SSLSocketFactory sAllHostsValidSocketFactory; private static SSLSocketFactory getAllHostsValidSocketFactory() throws NoSuchAlgorithmException, KeyManagementException { if (sAllHostsValidSocketFactory == null) { TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() { public X509Certificate[] getAcceptedIssuers() { return null; } public void checkClientTrusted(X509Certificate[] certs, String authType) { } public void checkServerTrusted(X509Certificate[] certs, String authType) { } } }; SSLContext sc = SSLContext.getInstance("SSL"); sc.init(null, trustAllCerts, new java.security.SecureRandom()); sAllHostsValidSocketFactory = sc.getSocketFactory(); } return sAllHostsValidSocketFactory; } private static HostnameVerifier sAllHostsValidVerifier; private static HostnameVerifier getAllHostsValidVerifier() { if (sAllHostsValidVerifier == null) { sAllHostsValidVerifier = new HostnameVerifier() { public boolean verify(String hostname, SSLSession session) { return true; } }; } return sAllHostsValidVerifier; } private static String convertStreamToString(InputStream is, boolean isGzipEnabled) throws IOException { InputStream cleanedIs = is; if (isGzipEnabled) { cleanedIs = new GZIPInputStream(is); } BufferedReader reader = null; try { reader = new BufferedReader(new InputStreamReader(cleanedIs, UTF8_CHARSET)); StringBuilder sb = new StringBuilder(); for (String line; (line = reader.readLine()) != null;) { sb.append(line); sb.append("\n"); } return sb.toString(); } finally { if (reader != null) { reader.close(); } cleanedIs.close(); if (isGzipEnabled) { is.close(); } } } }