List of usage examples for java.io IOException IOException
public IOException(Throwable cause)
From source file:Main.java
private static void checkFile(File file) throws IOException { boolean exists = file.exists(); if (exists && !file.isFile()) { throw new IOException("File " + file.getPath() + " is actually not a file."); }//w w w . j ava 2s . c o m }
From source file:Main.java
/** * parse XML document//from w w w. j av a 2 s . co m * @param in * @return * @throws IOException */ public static Document parseXML(InputStream in) throws IOException { Document document = null; DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); //factory.setValidating(true); //factory.setNamespaceAware(true); try { DocumentBuilder builder = factory.newDocumentBuilder(); //builder.setErrorHandler(new XmlErrorHandler()); //builder.setEntityResolver(new XmlEntityResolver()); document = builder.parse(in); // close input stream in.close(); } catch (Exception ex) { throw new IOException(ex.getMessage()); } return document; }
From source file:Main.java
public final static byte[] decompress(byte[] input) throws IOException { if (input == null || input.length == 0) { return input; }/*from w w w . j ava2 s. c o m*/ Inflater inflator = new Inflater(); inflator.setInput(input); ByteArrayOutputStream bin = new ByteArrayOutputStream(input.length); byte[] buf = new byte[BUFFER_SIZE]; try { while (true) { int count = inflator.inflate(buf); if (count > 0) { bin.write(buf, 0, count); } else if (count == 0 && inflator.finished()) { break; } else { throw new IOException("bad zip data, size:" + input.length); } } } catch (DataFormatException t) { throw new IOException(t); } finally { inflator.end(); } return bin.toByteArray(); }
From source file:Main.java
public static void copyFile(File oldLocation, File newLocation) throws IOException { if (oldLocation.exists()) { BufferedInputStream reader = new BufferedInputStream(new FileInputStream(oldLocation)); BufferedOutputStream writer = new BufferedOutputStream(new FileOutputStream(newLocation, false)); try {/* ww w. ja v a 2 s .c om*/ byte[] buff = new byte[8192]; int numChars; while ((numChars = reader.read(buff, 0, buff.length)) != -1) { writer.write(buff, 0, numChars); } } catch (IOException ex) { throw new IOException( "IOException when transferring " + oldLocation.getPath() + " to " + newLocation.getPath()); } finally { try { if (reader != null) { writer.close(); reader.close(); } } catch (IOException ex) { Log.e(TAG, "Error closing files when transferring " + oldLocation.getPath() + " to " + newLocation.getPath()); } } } else { throw new IOException("Old location does not exist when transferring " + oldLocation.getPath() + " to " + newLocation.getPath()); } }
From source file:Main.java
/** * Decodes data encoded using {@link #toHex(byte[],int,int) toHex}. * * @param hex data to be converted//from w w w . j a v a 2 s . c o m * @param start offset * @param len count * * @throws IOException if input does not represent hex encoded value * * @since 1.29 */ public static byte[] fromHex(char[] hex, int start, int len) throws IOException { if (hex == null) throw new IOException("null"); int i = hex.length; if (i % 2 != 0) throw new IOException("odd length"); byte[] magic = new byte[i / 2]; for (; i > 0; i -= 2) { String g = new String(hex, i - 2, 2); try { magic[(i / 2) - 1] = (byte) Integer.parseInt(g, 16); } catch (NumberFormatException ex) { throw new IOException(ex.getLocalizedMessage()); } } return magic; }
From source file:com.qwazr.store.store.StoreManager.java
public static void load(File directory) throws IOException { if (INSTANCE != null) throw new IOException("Already loaded"); INSTANCE = new StoreManager(directory); }
From source file:CTmousetrack.java
public static void main(String[] args) { String outLoc = new String("." + File.separator + "CTdata"); // Location of the base output data folder; only used when writing out CT data to a local folder String srcName = "CTmousetrack"; // name of the output CT source long blockPts = 10; // points per block flush long sampInterval = 10; // time between sampling updates, msec double trimTime = 0.0; // amount of data to keep (trim time), sec boolean debug = false; // turn on debug? // Specify the CT output connection CTWriteMode writeMode = CTWriteMode.LOCAL; // The selected mode for writing out CT data String serverHost = ""; // Server (FTP or HTTP/S) host:port String serverUser = ""; // Server (FTP or HTTPS) username String serverPassword = ""; // Server (FTP or HTTPS) password // For UDP output mode DatagramSocket udpServerSocket = null; InetAddress udpServerAddress = null; String udpHost = ""; int udpPort = -1; // Concatenate all of the CTWriteMode types String possibleWriteModes = ""; for (CTWriteMode wm : CTWriteMode.values()) { possibleWriteModes = possibleWriteModes + ", " + wm.name(); }//w w w. j a va 2 s. c o m // Remove ", " from start of string possibleWriteModes = possibleWriteModes.substring(2); // // Argument processing using Apache Commons CLI // // 1. Setup command line options Options options = new Options(); options.addOption("h", "help", false, "Print this message."); options.addOption(Option.builder("o").argName("base output dir").hasArg().desc( "Base output directory when writing data to local folder (i.e., this is the location of CTdata folder); default = \"" + outLoc + "\".") .build()); options.addOption(Option.builder("s").argName("source name").hasArg() .desc("Name of source to write data to; default = \"" + srcName + "\".").build()); options.addOption(Option.builder("b").argName("points per block").hasArg() .desc("Number of points per block; UDP output mode will use 1 point/block; default = " + Long.toString(blockPts) + ".") .build()); options.addOption(Option.builder("dt").argName("samp interval msec").hasArg() .desc("Sampling period in msec; default = " + Long.toString(sampInterval) + ".").build()); options.addOption(Option.builder("t").argName("trim time sec").hasArg().desc( "Trim (ring-buffer loop) time (sec); this is only used when writing data to local folder; specify 0 for indefinite; default = " + Double.toString(trimTime) + ".") .build()); options.addOption( Option.builder("w").argName("write mode").hasArg() .desc("Type of write connection; one of " + possibleWriteModes + "; all but UDP mode write out to CT; default = " + writeMode.name() + ".") .build()); options.addOption(Option.builder("host").argName("host[:port]").hasArg() .desc("Host:port when writing via FTP, HTTP, HTTPS, UDP.").build()); options.addOption(Option.builder("u").argName("username,password").hasArg() .desc("Comma-delimited username and password when writing to CT via FTP or HTTPS.").build()); options.addOption("x", "debug", false, "Enable CloudTurbine debug output."); // 2. Parse command line options CommandLineParser parser = new DefaultParser(); CommandLine line = null; try { line = parser.parse(options, args); } catch (ParseException exp) { // oops, something went wrong System.err.println("Command line argument parsing failed: " + exp.getMessage()); return; } // 3. Retrieve the command line values if (line.hasOption("help")) { // Display help message and quit HelpFormatter formatter = new HelpFormatter(); formatter.setWidth(120); formatter.printHelp("CTmousetrack", "", options, "NOTE: UDP output is a special non-CT output mode where single x,y points are sent via UDP to the specified host:port."); return; } outLoc = line.getOptionValue("o", outLoc); if (!outLoc.endsWith("\\") && !outLoc.endsWith("/")) { outLoc = outLoc + File.separator; } // Make sure the base output folder location ends in "CTdata" if (!outLoc.endsWith("CTdata\\") && !outLoc.endsWith("CTdata/")) { outLoc = outLoc + "CTdata" + File.separator; } srcName = line.getOptionValue("s", srcName); blockPts = Long.parseLong(line.getOptionValue("b", Long.toString(blockPts))); sampInterval = Long.parseLong(line.getOptionValue("dt", Long.toString(sampInterval))); trimTime = Double.parseDouble(line.getOptionValue("t", Double.toString(trimTime))); // Type of output connection String writeModeStr = line.getOptionValue("w", writeMode.name()); boolean bMatch = false; for (CTWriteMode wm : CTWriteMode.values()) { if (wm.name().toLowerCase().equals(writeModeStr.toLowerCase())) { writeMode = wm; bMatch = true; } } if (!bMatch) { System.err.println("Unrecognized write mode, \"" + writeModeStr + "\"; write mode must be one of " + possibleWriteModes); System.exit(0); } if (writeMode != CTWriteMode.LOCAL) { // User must have specified the host // If FTP or HTTPS, they may also specify username/password serverHost = line.getOptionValue("host", serverHost); if (serverHost.isEmpty()) { System.err.println( "When using write mode \"" + writeModeStr + "\", you must specify the server host."); System.exit(0); } if (writeMode == CTWriteMode.UDP) { // Force blockPts to be 1 blockPts = 1; // User must have specified both host and port int colonIdx = serverHost.indexOf(':'); if ((colonIdx == -1) || (colonIdx >= serverHost.length() - 1)) { System.err.println( "For UDP output mode, both the host and port (<host>:<port>)) must be specified."); System.exit(0); } udpHost = serverHost.substring(0, colonIdx); String udpPortStr = serverHost.substring(colonIdx + 1); try { udpPort = Integer.parseInt(udpPortStr); } catch (NumberFormatException nfe) { System.err.println("The UDP port must be a positive integer."); System.exit(0); } } if ((writeMode == CTWriteMode.FTP) || (writeMode == CTWriteMode.HTTPS)) { String userpassStr = line.getOptionValue("u", ""); if (!userpassStr.isEmpty()) { // This string should be comma-delimited username and password String[] userpassCSV = userpassStr.split(","); if (userpassCSV.length != 2) { System.err.println("When specifying a username and password for write mode \"" + writeModeStr + "\", separate the username and password by a comma."); System.exit(0); } serverUser = userpassCSV[0]; serverPassword = userpassCSV[1]; } } } debug = line.hasOption("debug"); System.err.println("CTmousetrack parameters:"); System.err.println("\toutput mode = " + writeMode.name()); if (writeMode == CTWriteMode.UDP) { System.err.println("\twrite to " + udpHost + ":" + udpPort); } else { System.err.println("\tsource = " + srcName); System.err.println("\ttrim time = " + trimTime + " sec"); } System.err.println("\tpoints per block = " + blockPts); System.err.println("\tsample interval = " + sampInterval + " msec"); try { // // Setup CTwriter or UDP output // CTwriter ctw = null; CTinfo.setDebug(debug); if (writeMode == CTWriteMode.LOCAL) { ctw = new CTwriter(outLoc + srcName, trimTime); System.err.println("\tdata will be written to local folder \"" + outLoc + "\""); } else if (writeMode == CTWriteMode.FTP) { CTftp ctftp = new CTftp(srcName); try { ctftp.login(serverHost, serverUser, serverPassword); } catch (Exception e) { throw new IOException( new String("Error logging into FTP server \"" + serverHost + "\":\n" + e.getMessage())); } ctw = ctftp; // upcast to CTWriter System.err.println("\tdata will be written to FTP server at " + serverHost); } else if (writeMode == CTWriteMode.HTTP) { // Don't send username/pw in HTTP mode since they will be unencrypted CThttp cthttp = new CThttp(srcName, "http://" + serverHost); ctw = cthttp; // upcast to CTWriter System.err.println("\tdata will be written to HTTP server at " + serverHost); } else if (writeMode == CTWriteMode.HTTPS) { CThttp cthttp = new CThttp(srcName, "https://" + serverHost); // Username/pw are optional for HTTPS mode; only use them if username is not empty if (!serverUser.isEmpty()) { try { cthttp.login(serverUser, serverPassword); } catch (Exception e) { throw new IOException(new String( "Error logging into HTTP server \"" + serverHost + "\":\n" + e.getMessage())); } } ctw = cthttp; // upcast to CTWriter System.err.println("\tdata will be written to HTTPS server at " + serverHost); } else if (writeMode == CTWriteMode.UDP) { try { udpServerSocket = new DatagramSocket(); } catch (SocketException se) { System.err.println("Error creating socket for UDP:\n" + se); System.exit(0); } try { udpServerAddress = InetAddress.getByName(udpHost); } catch (UnknownHostException uhe) { System.err.println("Error getting UDP server host address:\n" + uhe); System.exit(0); } } if (writeMode != CTWriteMode.UDP) { ctw.setBlockMode(blockPts > 1, blockPts > 1); ctw.autoFlush(0); // no autoflush ctw.autoSegment(1000); } // screen dims Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); double width = screenSize.getWidth(); double height = screenSize.getHeight(); // use Map for consolidated putData Map<String, Object> cmap = new LinkedHashMap<String, Object>(); // loop and write some output for (int i = 0; i < 1000000; i++) { // go until killed long currentTime = System.currentTimeMillis(); Point mousePos = MouseInfo.getPointerInfo().getLocation(); float x_pt = (float) (mousePos.getX() / width); // normalize float y_pt = (float) ((height - mousePos.getY()) / height); // flip Y (so bottom=0) if (writeMode != CTWriteMode.UDP) { // CT output mode ctw.setTime(currentTime); cmap.clear(); cmap.put("x", x_pt); cmap.put("y", y_pt); ctw.putData(cmap); if (((i + 1) % blockPts) == 0) { ctw.flush(); System.err.print("."); } } else { // UDP output mode // We force blockPts to be 1 for UDP output mode, i.e. we "flush" the data every time // Write the following data (21 bytes total): // header = "MOUSE", 5 bytes // current time, long, 8 bytes // 2 floats (x,y) 4 bytes each, 8 bytes int len = 21; ByteBuffer bb = ByteBuffer.allocate(len); String headerStr = "MOUSE"; bb.put(headerStr.getBytes("UTF-8")); bb.putLong(currentTime); bb.putFloat(x_pt); bb.putFloat(y_pt); // Might be able to use the following, but not sure: // byte[] sendData = bb.array(); byte[] sendData = new byte[len]; bb.position(0); bb.get(sendData, 0, len); DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, udpServerAddress, udpPort); try { udpServerSocket.send(sendPacket); } catch (IOException e) { System.err.println("Test server caught exception trying to send data to UDP client:\n" + e); } System.err.print("."); } try { Thread.sleep(sampInterval); } catch (Exception e) { } ; } if (writeMode != CTWriteMode.UDP) { ctw.flush(); // wrap up } } catch (Exception e) { System.err.println("CTmousetrack exception: " + e); e.printStackTrace(); } }
From source file:Util.java
/** * Read bytes from a File into a byte[]./* ww w . j a va 2 s .c o m*/ * * @param file The File to read. * @return A byte[] containing the contents of the File. * @throws IOException Thrown if the File is too long to read or couldn't be * read fully. */ public static byte[] readBytesFromFile(File file) throws IOException { InputStream is = new FileInputStream(file); // Get the size of the file long length = file.length(); // You cannot create an array using a long type. // It needs to be an int type. // Before converting to an int type, check // to ensure that file is not larger than Integer.MAX_VALUE. if (length > Integer.MAX_VALUE) { throw new IOException("Could not completely read file " + file.getName() + " as it is too long (" + length + " bytes, max supported " + Integer.MAX_VALUE + ")"); } // Create the byte array to hold the data byte[] bytes = new byte[(int) length]; // Read in the bytes int offset = 0; int numRead = 0; while (offset < bytes.length && (numRead = is.read(bytes, offset, bytes.length - offset)) >= 0) { offset += numRead; } // Ensure all the bytes have been read in if (offset < bytes.length) { throw new IOException("Could not completely read file " + file.getName()); } // Close the input stream and return bytes is.close(); return bytes; }
From source file:Main.java
public static String sourceToString(Source source) throws IOException { try {// w ww . j a v a2s.com Transformer trans = transFactory.newTransformer(); trans.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes"); trans.setOutputProperty(OutputKeys.INDENT, "yes"); Writer writer = new StringWriter(); trans.transform(source, new StreamResult(writer)); writer.flush(); return writer.toString(); } catch (TransformerException ex) { throw new IOException(ex); } }
From source file:Main.java
/** * Dump a {@link Document} or {@link Node}-compatible object to the given {@link OutputStream} (e.g. System.out). * * @param _docOrNode {@link Document} or {@link Node} object * @param _outStream {@link OutputStream} to print on * @throws IOException on error/*w w w . j av a 2s. c om*/ */ public static void printDocument(Node _docOrNode, OutputStream _outStream) throws IOException { if (_docOrNode == null || _outStream == null) { throw new IOException("Cannot print (on) 'null' object"); } TransformerFactory tf = TransformerFactory.newInstance(); Transformer transformer; try { transformer = tf.newTransformer(); transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no"); transformer.setOutputProperty(OutputKeys.METHOD, "xml"); transformer.setOutputProperty(OutputKeys.INDENT, "yes"); transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8"); transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4"); transformer.transform(new DOMSource(_docOrNode), new StreamResult(new OutputStreamWriter(_outStream, "UTF-8"))); } catch (UnsupportedEncodingException | TransformerException _ex) { throw new IOException("Could not print Document or Node.", _ex); } }