Example usage for java.net HttpURLConnection setDoInput

Introduction

In this page you can find the example usage for java.net HttpURLConnection setDoInput.

Prototype

public void setDoInput(boolean doinput) 

Source Link

Document

Sets the value of the doInput field for this URLConnection to the specified value.

Usage

From source file:org.apache.mycat.advisor.common.net.http.HttpService.java

/**
 * ? header?// w  w w.  ja  v a  2 s .com
 *
 * @param requestUrl
 * @param requestMethod
 * @param WithTokenHeader
 * @param token
 * @return
 */
public static String doHttpRequest(String requestUrl, String requestMethod, Boolean WithTokenHeader,
        String token) {
    String result = null;
    InetAddress ipaddr;
    int responseCode = -1;
    try {
        ipaddr = InetAddress.getLocalHost();
        StringBuffer buffer = new StringBuffer();
        URL url = new URL(requestUrl);
        HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();
        httpUrlConn.setDoOutput(true);
        httpUrlConn.setDoInput(true);
        httpUrlConn.setUseCaches(false);

        httpUrlConn.setUseCaches(false);
        httpUrlConn.setRequestProperty("Accept-Charset", DEFAULT_CHARSET);
        httpUrlConn.setRequestProperty("Content-Type", "application/json;charset=" + DEFAULT_CHARSET);
        if (WithTokenHeader) {
            if (token == null) {
                throw new IllegalStateException("Oauth2 token is not set!");
            }
            httpUrlConn.setRequestProperty("Authorization", "OAuth2 " + token);
            httpUrlConn.setRequestProperty("API-RemoteIP", ipaddr.getHostAddress());
        }
        // ?GET/POST
        httpUrlConn.setRequestMethod(requestMethod);

        if ("GET".equalsIgnoreCase(requestMethod))
            httpUrlConn.connect();

        //            // ????
        //            if (null != outputJson) {
        //                OutputStream outputStream = httpUrlConn.getOutputStream();
        //                //??
        //                outputStream.write(outputJson.getBytes(DEFAULT_CHARSET));
        //                outputStream.close();
        //            }

        // ???
        InputStream inputStream = httpUrlConn.getInputStream();
        InputStreamReader inputStreamReader = new InputStreamReader(inputStream, DEFAULT_CHARSET);
        BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

        String str = null;
        while ((str = bufferedReader.readLine()) != null) {
            buffer.append(str);
        }
        result = buffer.toString();
        bufferedReader.close();
        inputStreamReader.close();
        // ?
        inputStream.close();
        httpUrlConn.disconnect();
    } catch (ConnectException ce) {
        logger.error("server connection timed out.", ce);
    } catch (Exception e) {
        logger.error("http request error:", e);
    } finally {
        return result;
    }
}

---

From source file:crow.weibo.util.WeiboUtil.java

public static String multipartPost(HttpURLConnection conn, List<PostParameter> params) throws IOException {
    OutputStream os;/*from  w  w  w .j  av a2s .  c o  m*/
    List<PostParameter> dataparams = new ArrayList<PostParameter>();
    for (PostParameter key : params) {
        if (key.isFile()) {
            dataparams.add(key);
        }
    }

    String BOUNDARY = Util.md5(String.valueOf(System.currentTimeMillis()));

    conn.setDoOutput(true);
    conn.setDoInput(true);
    conn.setUseCaches(false);
    conn.setRequestMethod("POST");
    conn.setRequestProperty("Connection", "Keep-Alive");
    conn.setRequestProperty("Charsert", "UTF-8");

    conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + BOUNDARY);

    ByteArrayBuffer buff = new ByteArrayBuffer(1000);

    for (PostParameter p : params) {
        byte[] arr = p.toMultipartByte(BOUNDARY, "UTF-8");
        buff.append(arr, 0, arr.length);
    }
    String end = "--" + BOUNDARY + "--" + "\r\n";
    byte[] endArr = end.getBytes();
    buff.append(endArr, 0, endArr.length);

    conn.setRequestProperty("Content-Length", buff.length() + "");
    conn.connect();
    os = new BufferedOutputStream(conn.getOutputStream());
    os.write(buff.toByteArray());
    buff.clear();
    os.flush();
    String response = "";
    response = Util.inputStreamToString(conn.getInputStream());
    return response;
}

---

From source file:com.alibaba.akita.io.HttpInvoker.java

/**
 * post with files using URLConnection Impl
 * @param actionUrl URL to post//w ww  .j  a v  a2  s.  c o m
 * @param params params to post
 * @param files files to post, support multi-files
 * @return response in String format
 * @throws IOException
 */
public static String postWithFilesUsingURLConnection(String actionUrl, ArrayList<NameValuePair> params,
        Map<String, File> files) throws AkInvokeException {
    try {
        String BOUNDARY = java.util.UUID.randomUUID().toString();
        String PREFIX = "--", LINEND = "\r\n";
        String MULTIPART_FROM_DATA = "multipart/form-data";
        String CHARSET = "UTF-8";

        URL uri = new URL(actionUrl);
        HttpURLConnection conn = (HttpURLConnection) uri.openConnection();

        conn.setReadTimeout(60 * 1000);
        conn.setDoInput(true); // permit input
        conn.setDoOutput(true); // permit output
        conn.setUseCaches(false);
        conn.setRequestMethod("POST"); // Post Method
        conn.setRequestProperty("connection", "keep-alive");
        conn.setRequestProperty("Charsert", "UTF-8");
        conn.setRequestProperty("Content-Type", MULTIPART_FROM_DATA + ";boundary=" + BOUNDARY);

        // firstly string params to add
        StringBuilder sb = new StringBuilder();
        for (NameValuePair nameValuePair : params) {
            sb.append(PREFIX);
            sb.append(BOUNDARY);
            sb.append(LINEND);
            sb.append("Content-Disposition: form-data; name=\"" + nameValuePair.getName() + "\"" + LINEND);
            sb.append("Content-Type: text/plain; charset=" + CHARSET + LINEND);
            sb.append("Content-Transfer-Encoding: 8bit" + LINEND);
            sb.append(LINEND);
            sb.append(nameValuePair.getValue());
            sb.append(LINEND);
        }

        DataOutputStream outStream = new DataOutputStream(conn.getOutputStream());
        outStream.write(sb.toString().getBytes());
        // send files secondly
        if (files != null) {
            int num = 0;
            for (Map.Entry<String, File> file : files.entrySet()) {
                num++;
                if (file.getKey() == null || file.getValue() == null)
                    continue;
                else {
                    if (!file.getValue().exists()) {
                        throw new AkInvokeException(AkInvokeException.CODE_FILE_NOT_FOUND,
                                "The file to upload is not found.");
                    }
                }
                StringBuilder sb1 = new StringBuilder();
                sb1.append(PREFIX);
                sb1.append(BOUNDARY);
                sb1.append(LINEND);
                sb1.append("Content-Disposition: form-data; name=\"file" + num + "\"; filename=\""
                        + file.getKey() + "\"" + LINEND);
                sb1.append("Content-Type: application/octet-stream; charset=" + CHARSET + LINEND);
                sb1.append(LINEND);
                outStream.write(sb1.toString().getBytes());

                InputStream is = new FileInputStream(file.getValue());
                byte[] buffer = new byte[1024];
                int len = 0;
                while ((len = is.read(buffer)) != -1) {
                    outStream.write(buffer, 0, len);
                }

                is.close();
                outStream.write(LINEND.getBytes());
            }
        }

        // request end flag
        byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINEND).getBytes();
        outStream.write(end_data);
        outStream.flush();
        // get response code
        int res = conn.getResponseCode();
        InputStream in = conn.getInputStream();
        StringBuilder sb2 = new StringBuilder();
        if (res == 200) {
            BufferedReader reader = new BufferedReader(new InputStreamReader(in, "utf-8"), 8192);
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb2.append(line + "\n");
            }
            reader.close();
        }
        outStream.close();
        conn.disconnect();
        return sb2.toString();
    } catch (IOException ioe) {
        throw new AkInvokeException(AkInvokeException.CODE_IO_EXCEPTION, "IO Exception", ioe);
    }
}

---

From source file:com.mingsoft.weixin.util.UploadDownUtils.java

/**
 * ? ? // w ww  .ja  v  a2 s .co m
 * @param access_token ??
 * @param msgType image?voice?videothumb
 * @param localFile 
 * @return
 */
@Deprecated
public static String uploadMedia(String access_token, String msgType, String localFile) {
    String media_id = null;
    String url = "http://file.api.weixin.qq.com/cgi-bin/media/upload?access_token=" + access_token + "&type="
            + msgType;
    String local_url = localFile;
    try {
        File file = new File(local_url);
        if (!file.exists() || !file.isFile()) {
            log.error("==" + local_url);
            return null;
        }
        URL urlObj = new URL(url);
        HttpURLConnection con = (HttpURLConnection) urlObj.openConnection();
        con.setRequestMethod("POST"); // Post????get?
        con.setDoInput(true);
        con.setDoOutput(true);
        con.setUseCaches(false); // post??
        // ?
        con.setRequestProperty("Connection", "Keep-Alive");
        con.setRequestProperty("Charset", "UTF-8");

        // 
        String BOUNDARY = "----------" + System.currentTimeMillis();
        con.setRequestProperty("content-type", "multipart/form-data; boundary=" + BOUNDARY);
        // con.setRequestProperty("Content-Type",
        // "multipart/mixed; boundary=" + BOUNDARY);
        // con.setRequestProperty("content-type", "text/html");
        // ?

        // 
        StringBuilder sb = new StringBuilder();
        sb.append("--"); // ////////?
        sb.append(BOUNDARY);
        sb.append("\r\n");
        sb.append("Content-Disposition: form-data;name=\"file\";filename=\"" + file.getName() + "\"\r\n");
        sb.append("Content-Type:application/octet-stream\r\n\r\n");
        byte[] head = sb.toString().getBytes("utf-8");
        // ?
        OutputStream out = new DataOutputStream(con.getOutputStream());
        out.write(head);

        // 
        DataInputStream in = new DataInputStream(new FileInputStream(file));
        int bytes = 0;
        byte[] bufferOut = new byte[1024];
        while ((bytes = in.read(bufferOut)) != -1) {
            out.write(bufferOut, 0, bytes);
        }
        in.close();
        // 
        byte[] foot = ("\r\n--" + BOUNDARY + "--\r\n").getBytes("utf-8");// ??
        out.write(foot);
        out.flush();
        out.close();
        /**
         * ????,?????
         */
        // con.getResponseCode();
        try {
            // BufferedReader???URL?
            StringBuffer buffer = new StringBuffer();
            BufferedReader reader = new BufferedReader(new InputStreamReader(con.getInputStream(), "UTF-8"));
            String line = null;
            while ((line = reader.readLine()) != null) {
                // System.out.println(line);
                buffer.append(line);
            }
            String respStr = buffer.toString();
            log.debug("==respStr==" + respStr);
            try {
                JSONObject dataJson = JSONObject.parseObject(respStr);

                media_id = dataJson.getString("media_id");
            } catch (Exception e) {
                log.error("==respStr==" + respStr, e);
                try {
                    JSONObject dataJson = JSONObject.parseObject(respStr);
                    return dataJson.getString("errcode");
                } catch (Exception e1) {
                }
            }
        } catch (Exception e) {
            log.error("??POST?" + e);
        }
    } catch (Exception e) {
        log.error("?!=" + local_url);
        log.error("?!", e);
    } finally {
    }
    return media_id;
}

---

From source file:bluevia.SendSMS.java

public static void setFacebookWallPost(String userEmail, String post) {
    try {/*from w  w  w  .j  a  v  a  2  s.  c o  m*/

        Properties facebookAccount = Util.getNetworkAccount(userEmail, Util.FaceBookOAuth.networkID);

        if (facebookAccount != null) {
            String access_key = facebookAccount.getProperty(Util.FaceBookOAuth.networkID + ".access_key");

            com.google.appengine.api.urlfetch.FetchOptions.Builder.doNotValidateCertificate();

            Entity blueviaUser = Util.getUser(userEmail);

            //FIXME
            URL fbAPI = new URL(
                    "https://graph.facebook.com/" + (String) blueviaUser.getProperty("alias") + "/feed");
            HttpURLConnection request = (HttpURLConnection) fbAPI.openConnection();

            String content = String.format("access_token=%s&message=%s", access_key,
                    URLEncoder.encode(post, "UTF-8"));

            request.setRequestMethod("POST");
            request.setRequestProperty("Content-Type", "javascript/text");
            request.setRequestProperty("Content-Length", "" + Integer.toString(content.getBytes().length));
            request.setDoOutput(true);
            request.setDoInput(true);

            OutputStream os = request.getOutputStream();
            os.write(content.getBytes());
            os.flush();
            os.close();

            BufferedReader br = new BufferedReader(new InputStreamReader(request.getInputStream()));
            int rc = request.getResponseCode();
            if (rc == HttpURLConnection.HTTP_OK) {
                StringBuffer body = new StringBuffer();
                String line;

                do {
                    line = br.readLine();
                    if (line != null)
                        body.append(line);
                } while (line != null);

                JSONObject id = new JSONObject(body.toString());
            } else
                log.severe(
                        String.format("Error %d posting FaceBook wall:%s\n", rc, request.getResponseMessage()));
        }
    } catch (Exception e) {
        log.severe(String.format("Exception posting FaceBook wall: %s", e.getMessage()));
    }
}

---

From source file:org.akita.io.HttpInvoker.java

/**
 * post with files using URLConnection Impl
 * @param actionUrl URL to post/*from  www.  j a  v a2s .  c  om*/
 * @param params params to post
 * @param files files to post, support multi-files
 * @return response in String format
 * @throws IOException
 */
public static String postWithFilesUsingURLConnection(String actionUrl, ArrayList<NameValuePair> params,
        Map<String, File> files) throws AkInvokeException {
    try {
        Log.v(TAG, "post:" + actionUrl);
        if (params != null) {
            Log.v(TAG, "params:=====================");
            for (NameValuePair nvp : params) {
                Log.v(TAG, nvp.getName() + "=" + nvp.getValue());
            }
            Log.v(TAG, "params end:=====================");
        }

        String BOUNDARY = java.util.UUID.randomUUID().toString();
        String PREFIX = "--", LINEND = "\r\n";
        String MULTIPART_FROM_DATA = "multipart/form-data";
        String CHARSET = "UTF-8";

        URL uri = new URL(actionUrl);
        HttpURLConnection conn = (HttpURLConnection) uri.openConnection();

        conn.setReadTimeout(60 * 1000);
        conn.setDoInput(true); // permit input
        conn.setDoOutput(true); // permit output
        conn.setUseCaches(false);
        conn.setRequestMethod("POST"); // Post Method
        conn.setRequestProperty("connection", "keep-alive");
        conn.setRequestProperty("Charsert", "UTF-8");
        conn.setRequestProperty("Content-Type", MULTIPART_FROM_DATA + ";boundary=" + BOUNDARY);

        // firstly string params to add
        StringBuilder sb = new StringBuilder();
        for (NameValuePair nameValuePair : params) {
            sb.append(PREFIX);
            sb.append(BOUNDARY);
            sb.append(LINEND);
            sb.append("Content-Disposition: form-data; name=\"" + nameValuePair.getName() + "\"" + LINEND);
            sb.append("Content-Type: text/plain; charset=" + CHARSET + LINEND);
            sb.append("Content-Transfer-Encoding: 8bit" + LINEND);
            sb.append(LINEND);
            sb.append(nameValuePair.getValue());
            sb.append(LINEND);
        }

        DataOutputStream outStream = new DataOutputStream(conn.getOutputStream());
        outStream.write(sb.toString().getBytes());
        // send files secondly
        if (files != null) {
            int num = 0;
            for (Map.Entry<String, File> file : files.entrySet()) {
                num++;
                if (file.getKey() == null || file.getValue() == null)
                    continue;
                else {
                    if (!file.getValue().exists()) {
                        throw new AkInvokeException(AkInvokeException.CODE_FILE_NOT_FOUND,
                                "The file to upload is not found.");
                    }
                }
                StringBuilder sb1 = new StringBuilder();
                sb1.append(PREFIX);
                sb1.append(BOUNDARY);
                sb1.append(LINEND);
                sb1.append("Content-Disposition: form-data; name=\"" + file.getKey() + "\"; filename=\""
                        + file.getKey() + "\"" + LINEND);
                sb1.append("Content-Type: application/octet-stream; charset=" + CHARSET + LINEND);
                sb1.append(LINEND);
                outStream.write(sb1.toString().getBytes());

                InputStream is = new FileInputStream(file.getValue());
                byte[] buffer = new byte[1024];
                int len = 0;
                while ((len = is.read(buffer)) != -1) {
                    outStream.write(buffer, 0, len);
                }

                is.close();
                outStream.write(LINEND.getBytes());
            }
        }

        // request end flag
        byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINEND).getBytes();
        outStream.write(end_data);
        outStream.flush();
        // get response code
        int res = conn.getResponseCode();
        InputStream in = conn.getInputStream();
        StringBuilder sb2 = new StringBuilder();
        if (res == 200) {
            BufferedReader reader = new BufferedReader(new InputStreamReader(in, "utf-8"), 8192);
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb2.append(line + "\n");
            }
            reader.close();
        }
        outStream.close();
        conn.disconnect();
        Log.v(TAG, "response:" + sb2.toString());
        return sb2.toString();
    } catch (IOException ioe) {
        throw new AkInvokeException(AkInvokeException.CODE_IO_EXCEPTION, "IO Exception", ioe);
    }
}

---

From source file:com.mobile.natal.natalchart.NetworkUtilities.java

/**
 * Sends an HTTP GET request to a url/*from www .j a  va 2  s .  c  om*/
 *
 * @param urlStr            - The URL of the server. (Example: " http://www.yahoo.com/search")
 * @param file              the output file. If it is a folder, it tries to get the file name from the header.
 * @param requestParameters - all the request parameters (Example: "param1=val1&param2=val2").
 *                          Note: This method will add the question mark (?) to the request -
 *                          DO NOT add it yourself
 * @param user              user.
 * @param password          password.
 * @return the file written.
 * @throws Exception if something goes wrong.
 */
public static File sendGetRequest4File(String urlStr, File file, String requestParameters, String user,
        String password) throws Exception {
    if (requestParameters != null && requestParameters.length() > 0) {
        urlStr += "?" + requestParameters;
    }
    HttpURLConnection conn = makeNewConnection(urlStr);
    conn.setRequestMethod("GET");
    // conn.setDoOutput(true);
    conn.setDoInput(true);
    // conn.setChunkedStreamingMode(0);
    conn.setUseCaches(false);

    if (user != null && password != null && user.trim().length() > 0 && password.trim().length() > 0) {
        conn.setRequestProperty("Authorization", getB64Auth(user, password));
    }
    conn.connect();

    if (file.isDirectory()) {
        // try to get the header
        String headerField = conn.getHeaderField("Content-Disposition");
        String fileName = null;
        if (headerField != null) {
            String[] split = headerField.split(";");
            for (String string : split) {
                String pattern = "filename=";
                if (string.toLowerCase().startsWith(pattern)) {
                    fileName = string.replaceFirst(pattern, "");
                    break;
                }
            }
        }
        if (fileName == null) {
            // give a name
            fileName = "FILE_" + TimeUtilities.INSTANCE.TIMESTAMPFORMATTER_LOCAL.format(new Date());
        }
        file = new File(file, fileName);
    }

    InputStream in = null;
    FileOutputStream out = null;
    try {
        in = conn.getInputStream();
        out = new FileOutputStream(file);

        byte[] buffer = new byte[(int) maxBufferSize];
        int bytesRead = in.read(buffer, 0, (int) maxBufferSize);
        while (bytesRead > 0) {
            out.write(buffer, 0, bytesRead);
            bytesRead = in.read(buffer, 0, (int) maxBufferSize);
        }
        out.flush();
    } finally {
        if (in != null)
            in.close();
        if (out != null)
            out.close();
        if (conn != null)
            conn.disconnect();
    }
    return file;
}

---

From source file:org.pixmob.fm2.util.HttpUtils.java

/**
 * Create a new Http connection for an URI.
 *//*from w  ww  .  j  av a 2 s  . co m*/
public static HttpURLConnection newRequest(Context context, String uri, Set<String> cookies)
        throws IOException {
    if (DEBUG) {
        Log.d(TAG, "Setup connection to " + uri);
    }

    final HttpURLConnection conn = (HttpURLConnection) new URL(uri).openConnection();
    conn.setUseCaches(false);
    conn.setInstanceFollowRedirects(false);
    conn.setConnectTimeout(30000);
    conn.setReadTimeout(60000);
    conn.setRequestProperty("Accept-Encoding", "gzip");
    conn.setRequestProperty("User-Agent", getUserAgent(context));
    conn.setRequestProperty("Cache-Control", "max-age=0");
    conn.setDoInput(true);

    // Close the connection when the request is done, or the application may
    // freeze due to a bug in some Android versions.
    conn.setRequestProperty("Connection", "close");

    if (conn instanceof HttpsURLConnection) {
        setupSecureConnection(context, (HttpsURLConnection) conn);
    }

    if (cookies != null && !cookies.isEmpty()) {
        final StringBuilder buf = new StringBuilder(256);
        for (final String cookie : cookies) {
            if (buf.length() != 0) {
                buf.append("; ");
            }
            buf.append(cookie);
        }
        conn.addRequestProperty("Cookie", buf.toString());
    }

    return conn;
}

---

From source file:net.mceoin.cominghome.api.NestUtil.java

/**
 * Make HTTP/JSON call to Nest and set away status.
 *
 * @param access_token OAuth token to allow access to Nest
 * @param structure_id ID of structure with thermostat
 * @param away_status Either "home" or "away"
 * @return Equal to "Success" if successful, otherwise it contains a hint on the error.
 *///from   ww  w.  ja  va 2  s .c  o  m
public static String tellNestAwayStatusCall(String access_token, String structure_id, String away_status) {

    String urlString = "https://developer-api.nest.com/structures/" + structure_id + "/away?auth="
            + access_token;
    log.info("url=" + urlString);

    StringBuilder builder = new StringBuilder();
    boolean error = false;
    String errorResult = "";

    HttpURLConnection urlConnection = null;
    try {
        URL url = new URL(urlString);
        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setRequestProperty("User-Agent", "ComingHomeBackend/1.0");
        urlConnection.setRequestMethod("PUT");
        urlConnection.setDoOutput(true);
        urlConnection.setDoInput(true);
        urlConnection.setChunkedStreamingMode(0);

        urlConnection.setRequestProperty("Content-Type", "application/json; charset=utf8");

        String payload = "\"" + away_status + "\"";

        OutputStreamWriter wr = new OutputStreamWriter(urlConnection.getOutputStream());
        wr.write(payload);
        wr.flush();
        log.info(payload);

        boolean redirect = false;

        // normally, 3xx is redirect
        int status = urlConnection.getResponseCode();
        if (status != HttpURLConnection.HTTP_OK) {
            if (status == HttpURLConnection.HTTP_MOVED_TEMP || status == HttpURLConnection.HTTP_MOVED_PERM
                    || status == 307 // Temporary redirect
                    || status == HttpURLConnection.HTTP_SEE_OTHER)
                redirect = true;
        }

        //            System.out.println("Response Code ... " + status);

        if (redirect) {

            // get redirect url from "location" header field
            String newUrl = urlConnection.getHeaderField("Location");

            // open the new connnection again
            urlConnection = (HttpURLConnection) new URL(newUrl).openConnection();
            urlConnection.setRequestMethod("PUT");
            urlConnection.setDoOutput(true);
            urlConnection.setDoInput(true);
            urlConnection.setChunkedStreamingMode(0);
            urlConnection.setRequestProperty("Content-Type", "application/json; charset=utf8");
            urlConnection.setRequestProperty("Accept", "application/json");

            //                System.out.println("Redirect to URL : " + newUrl);

            wr = new OutputStreamWriter(urlConnection.getOutputStream());
            wr.write(payload);
            wr.flush();

        }

        int statusCode = urlConnection.getResponseCode();

        log.info("statusCode=" + statusCode);
        if ((statusCode == HttpURLConnection.HTTP_OK)) {
            error = false;
        } else if (statusCode == HttpURLConnection.HTTP_UNAUTHORIZED) {
            // bad auth
            error = true;
            errorResult = "Unauthorized";
        } else if (statusCode == HttpURLConnection.HTTP_BAD_REQUEST) {
            error = true;
            InputStream response;
            response = urlConnection.getErrorStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(response));
            String line;
            while ((line = reader.readLine()) != null) {
                builder.append(line);
            }
            log.info("response=" + builder.toString());
            JSONObject object = new JSONObject(builder.toString());

            Iterator keys = object.keys();
            while (keys.hasNext()) {
                String key = (String) keys.next();
                if (key.equals("error")) {
                    // error = Internal Error on bad structure_id
                    errorResult = object.getString("error");
                    log.info("errorResult=" + errorResult);
                }
            }
        } else {
            error = true;
            errorResult = Integer.toString(statusCode);
        }

    } catch (IOException e) {
        error = true;
        errorResult = e.getLocalizedMessage();
        log.warning("IOException: " + errorResult);
    } catch (Exception e) {
        error = true;
        errorResult = e.getLocalizedMessage();
        log.warning("Exception: " + errorResult);
    } finally {
        if (urlConnection != null) {
            urlConnection.disconnect();
        }
    }
    if (error) {
        return "Error: " + errorResult;
    } else {
        return "Success";
    }
}

---

From source file:net.mceoin.cominghome.api.NestUtil.java

private static String getNestAwayStatusCall(String access_token) {

    String away_status = "";

    String urlString = "https://developer-api.nest.com/structures?auth=" + access_token;
    log.info("url=" + urlString);

    StringBuilder builder = new StringBuilder();
    boolean error = false;
    String errorResult = "";

    HttpURLConnection urlConnection = null;
    try {// ww w.ja  v a 2 s. c o  m
        URL url = new URL(urlString);
        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setRequestProperty("User-Agent", "ComingHomeBackend/1.0");
        urlConnection.setRequestMethod("GET");
        urlConnection.setDoOutput(true);
        urlConnection.setDoInput(true);
        urlConnection.setConnectTimeout(15000);
        urlConnection.setReadTimeout(15000);
        //            urlConnection.setChunkedStreamingMode(0);

        //            urlConnection.setRequestProperty("Content-Type", "application/json; charset=utf8");

        boolean redirect = false;

        // normally, 3xx is redirect
        int status = urlConnection.getResponseCode();
        if (status != HttpURLConnection.HTTP_OK) {
            if (status == HttpURLConnection.HTTP_MOVED_TEMP || status == HttpURLConnection.HTTP_MOVED_PERM
                    || status == 307 // Temporary redirect
                    || status == HttpURLConnection.HTTP_SEE_OTHER)
                redirect = true;
        }

        //            System.out.println("Response Code ... " + status);

        if (redirect) {

            // get redirect url from "location" header field
            String newUrl = urlConnection.getHeaderField("Location");

            // open the new connnection again
            urlConnection = (HttpURLConnection) new URL(newUrl).openConnection();
            urlConnection.setRequestMethod("PUT");
            urlConnection.setDoOutput(true);
            urlConnection.setDoInput(true);
            //                urlConnection.setChunkedStreamingMode(0);

            //                System.out.println("Redirect to URL : " + newUrl);

        }

        int statusCode = urlConnection.getResponseCode();

        log.info("statusCode=" + statusCode);
        if ((statusCode == HttpURLConnection.HTTP_OK)) {
            error = false;

            InputStream response;
            response = urlConnection.getInputStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(response));
            String line;
            while ((line = reader.readLine()) != null) {
                builder.append(line);
            }
            log.info("response=" + builder.toString());
            JSONObject object = new JSONObject(builder.toString());

            Iterator keys = object.keys();
            while (keys.hasNext()) {
                String key = (String) keys.next();
                JSONObject structure = object.getJSONObject(key);

                if (structure.has("away")) {
                    away_status = structure.getString("away");
                } else {
                    log.info("missing away");
                }
            }

        } else if (statusCode == HttpURLConnection.HTTP_UNAUTHORIZED) {
            // bad auth
            error = true;
            errorResult = "Unauthorized";
        } else if (statusCode == HttpURLConnection.HTTP_BAD_REQUEST) {
            error = true;
            InputStream response;
            response = urlConnection.getErrorStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(response));
            String line;
            while ((line = reader.readLine()) != null) {
                builder.append(line);
            }
            log.info("response=" + builder.toString());
            JSONObject object = new JSONObject(builder.toString());

            Iterator keys = object.keys();
            while (keys.hasNext()) {
                String key = (String) keys.next();
                if (key.equals("error")) {
                    // error = Internal Error on bad structure_id
                    errorResult = object.getString("error");
                    log.info("errorResult=" + errorResult);
                }
            }
        } else {
            error = true;
            errorResult = Integer.toString(statusCode);
        }

    } catch (IOException e) {
        error = true;
        errorResult = e.getLocalizedMessage();
        log.warning("IOException: " + errorResult);
    } catch (Exception e) {
        error = true;
        errorResult = e.getLocalizedMessage();
        log.warning("Exception: " + errorResult);
    } finally {
        if (urlConnection != null) {
            urlConnection.disconnect();
        }
    }

    if (error)
        away_status = "Error: " + errorResult;
    return away_status;
}

---

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