Example usage for java.io FileInputStream read

List of usage examples for java.io FileInputStream read

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Introduction

In this page you can find the example usage for java.io FileInputStream read.

Prototype

public int read(byte b[]) throws IOException

Source Link

Document

Reads up to b.length bytes of data from this input stream into an array of bytes.

Usage

From source file:Main.java

public static boolean copy(String srcFile, String dstFile) {
    FileInputStream fis = null;
    FileOutputStream fos = null;//from  w ww .j  a  v  a 2 s. c o  m
    try {

        File dst = new File(dstFile);
        if (!dst.getParentFile().exists()) {
            dst.getParentFile().mkdirs();
        }

        fis = new FileInputStream(srcFile);
        fos = new FileOutputStream(dstFile);

        byte[] buffer = new byte[1024];
        int len = 0;

        while ((len = fis.read(buffer)) != -1) {
            fos.write(buffer, 0, len);
        }

    } catch (Exception e) {
        e.printStackTrace();
        return false;
    } finally {
        if (fis != null) {
            try {
                fis.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (fos != null) {
            try {
                fos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }
    return true;
}

From source file:com.jaspersoft.studio.community.RESTCommunityHelper.java

/**
 * Uploads the specified file to the community site. The return identifier
 * can be used later when composing other requests.
 * //from w  w w . j av a2 s .  c o m
 * @param httpclient
 *            the http client
 * @param attachment
 *            the file to attach
 * @param authCookie
 *            the session cookie to use for authentication purpose
 * @return the identifier of the file uploaded, <code>null</code> otherwise
 * @throws CommunityAPIException
 */
public static String uploadFile(CloseableHttpClient httpclient, File attachment, Cookie authCookie)
        throws CommunityAPIException {
    FileInputStream fin = null;
    try {
        fin = new FileInputStream(attachment);
        byte fileContent[] = new byte[(int) attachment.length()];
        fin.read(fileContent);

        byte[] encodedFileContent = Base64.encodeBase64(fileContent);
        FileUploadRequest uploadReq = new FileUploadRequest(attachment.getName(), encodedFileContent);

        HttpPost fileuploadPOST = new HttpPost(CommunityConstants.FILE_UPLOAD_URL);
        EntityBuilder fileUploadEntity = EntityBuilder.create();
        fileUploadEntity.setText(uploadReq.getAsJSON());
        fileUploadEntity.setContentType(ContentType.create(CommunityConstants.JSON_CONTENT_TYPE));
        fileUploadEntity.setContentEncoding(CommunityConstants.REQUEST_CHARSET);
        fileuploadPOST.setEntity(fileUploadEntity.build());

        CloseableHttpResponse resp = httpclient.execute(fileuploadPOST);
        int httpRetCode = resp.getStatusLine().getStatusCode();
        String responseBodyAsString = EntityUtils.toString(resp.getEntity());

        if (HttpStatus.SC_OK == httpRetCode) {
            ObjectMapper mapper = new ObjectMapper();
            mapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
            mapper.configure(JsonParser.Feature.ALLOW_SINGLE_QUOTES, true);
            mapper.configure(JsonParser.Feature.ALLOW_COMMENTS, true);
            JsonNode jsonRoot = mapper.readTree(responseBodyAsString);
            String fid = jsonRoot.get("fid").asText(); //$NON-NLS-1$
            return fid;
        } else {
            CommunityAPIException ex = new CommunityAPIException(Messages.RESTCommunityHelper_FileUploadError);
            ex.setHttpStatusCode(httpRetCode);
            ex.setResponseBodyAsString(responseBodyAsString);
            throw ex;
        }

    } catch (FileNotFoundException e) {
        JSSCommunityActivator.getDefault().logError(Messages.RESTCommunityHelper_FileNotFoundError, e);
        throw new CommunityAPIException(Messages.RESTCommunityHelper_FileUploadError, e);
    } catch (UnsupportedEncodingException e) {
        JSSCommunityActivator.getDefault().logError(Messages.RESTCommunityHelper_EncodingNotValidError, e);
        throw new CommunityAPIException(Messages.RESTCommunityHelper_FileUploadError, e);
    } catch (IOException e) {
        JSSCommunityActivator.getDefault().logError(Messages.RESTCommunityHelper_PostMethodIOError, e);
        throw new CommunityAPIException(Messages.RESTCommunityHelper_FileUploadError, e);
    } finally {
        IOUtils.closeQuietly(fin);
    }
}

From source file:Main.java

/** Writes a copy of a file.
 * //from  w  ww  . j a  va  2  s .c  om
 * @param src the file to copy
 * @param dst the location to write the new file
 * @throws IOException
 */
public synchronized static void copy(File src, File dst) throws IOException {
    if (b1 == null)
        b1 = new byte[4096];

    FileInputStream in = null;
    FileOutputStream out = null;
    try {
        in = new FileInputStream(src);
        dst.getParentFile().mkdirs();
        dst.createNewFile();
        out = new FileOutputStream(dst);
        int k = in.read(b1);
        while (k != -1) {
            out.write(b1, 0, k);
            k = in.read(b1);
        }
    } finally {
        try {
            in.close();
        } catch (Throwable t) {
            t.printStackTrace();
        }
        try {
            out.close();
        } catch (Throwable t) {
            t.printStackTrace();
        }
    }
}

From source file:Main.java

/**
 * Reads a file that is embedded in our application and writes it to the device storage
 * @param context/*ww w. java  2s.c  o m*/
 * @param file
 * @param assetFileDescriptor
 */
private static void saveFileToDevice(Context context, File file, AssetFileDescriptor assetFileDescriptor) {
    // The output stream is used to write the new file to the device storage
    FileOutputStream outputStream = null;
    // The input stream is used for reading the file that is embedded in our application
    FileInputStream inputStream = null;
    try {
        byte[] buffer = new byte[1024];
        // Create the input stream
        inputStream = (assetFileDescriptor != null) ? assetFileDescriptor.createInputStream() : null;
        // Create the output stream
        outputStream = new FileOutputStream(file, false);
        // Read the file into buffer
        int i = (inputStream != null) ? inputStream.read(buffer) : 0;
        // Continue writing and reading the file until we reach the end
        while (i != -1) {
            outputStream.write(buffer, 0, i);
            i = (inputStream != null) ? inputStream.read(buffer) : 0;
        }

        outputStream.flush();
    } catch (IOException io) {
        // Display a message to the user
        Toast toast = Toast.makeText(context, "Could not save the file", Toast.LENGTH_SHORT);
        toast.show();
    } finally {
        if (outputStream != null) {
            try {
                outputStream.close();
            } catch (IOException ex) {
                // We should really never get this far, but we might consider adding a
                // warning/log entry here...
            }
        }
        if (inputStream != null) {
            try {
                inputStream.close();
            } catch (IOException ex) {
                // We should really never get this far, but we might consider adding a
                // warning/log entry here...
            }
        }
    }
}

From source file:gov.va.chir.tagline.dao.FileDao.java

private static void saveZipFile(final File zipFile, final File... inputFiles) throws IOException {
    byte[] buffer = new byte[BUFFER_SIZE];

    final ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zipFile));

    for (File file : inputFiles) {
        final ZipEntry entry = new ZipEntry(file.getName());
        zos.putNextEntry(entry);/* w  w  w  . ja va  2 s  .  c  om*/

        final FileInputStream in = new FileInputStream(file);
        int len;
        while ((len = in.read(buffer)) > 0) {
            zos.write(buffer, 0, len);
        }

        in.close();
        zos.closeEntry();
    }

    zos.close();
}

From source file:importer.filters.CceFilter.java

static String readFile(String name) {
    try {/*from   w  w w. j ava 2  s  . c om*/
        File f = new File(name);
        FileInputStream fis = new FileInputStream(f);
        byte[] data = new byte[(int) f.length()];
        fis.read(data);
        return new String(data, "UTF-8");
    } catch (Exception e) {
        return "";
    }
}

From source file:net.amigocraft.mpt.util.MiscUtil.java

/**
 * Calculates the SHA-1 hash for the file at the given path.
 * @param path the location of the file to hash
 * @return the SHA-1 checksum for the file
 * @throws MPTException if a stream cannot be opened to the file
 *///from ww w  . j a v  a2 s . c o m
public static String sha1(String path) throws MPTException {
    try {
        MessageDigest md = MessageDigest.getInstance("SHA-1");
        FileInputStream fis = new FileInputStream(path);
        byte[] dataBytes = new byte[1024];

        int nread;
        while ((nread = fis.read(dataBytes)) != -1) {
            md.update(dataBytes, 0, nread);
        }
        fis.close();

        byte[] mdbytes = md.digest();

        StringBuilder sb = new StringBuilder();
        for (byte mdbyte : mdbytes) {
            String hex = Integer.toHexString(0xff & mdbyte);
            if (hex.length() == 1)
                sb.append('0');
            sb.append(hex);
        }
        return sb.toString();
    } catch (Exception ex) {
        if (Config.ENFORCE_CHECKSUM)
            throw new MPTException(ERROR_COLOR + "Failed to get checksum for local package " + ID_COLOR + path
                    + ERROR_COLOR + "!");
    }
    return null;
}

From source file:Main.java

public static String uploadFile(String path) {
    String sourceFileUri = path;/* ww  w  .j  a  v  a 2  s.c o m*/
    File file = new File(sourceFileUri);
    ByteArrayOutputStream objByteArrayOS = null;
    FileInputStream objFileIS = null;
    boolean isSuccess = false;
    String strAttachmentCoded = null;

    if (!file.isFile()) {
        Log.w(TAG, "Source File not exist :" + sourceFileUri);
    } else {
        try {
            objFileIS = new FileInputStream(file);
            objByteArrayOS = new ByteArrayOutputStream();
            byte[] byteBufferString = new byte[(int) file.length()];
            objFileIS.read(byteBufferString);

            byte[] byteBinaryData = Base64.encode(byteBufferString, Base64.DEFAULT);
            strAttachmentCoded = new String(byteBinaryData);

            isSuccess = true;
        } catch (Exception e) {
            e.printStackTrace();
            Log.e("Upload file to server", "error: " + e.getMessage(), e);
        } finally {
            try {
                objByteArrayOS.close();
                objFileIS.close();
            } catch (IOException e) {
                Log.e(TAG, "Error : " + e.getMessage());
            }
        }
    }

    if (isSuccess) {
        return strAttachmentCoded;
    } else {
        return "No Picture";
    }
}

From source file:com.spstudio.common.image.ImageUtils.java

/**
 * ,?byte//from  w w w .  j a  v a 2 s.co m
 *
 * @return
 */
public static byte[] loadFile() {
    File file = new File("d:/touxiang.jpg");

    FileInputStream fis = null;
    ByteArrayOutputStream baos = null;
    byte[] data = null;

    try {
        fis = new FileInputStream(file);
        baos = new ByteArrayOutputStream((int) file.length());

        byte[] buffer = new byte[1024];
        int len = -1;
        while ((len = fis.read(buffer)) != -1) {
            baos.write(buffer, 0, len);
        }

        data = baos.toByteArray();

    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            if (fis != null) {
                fis.close();
                fis = null;
            }

            baos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    return data;
}

From source file:com.mc.printer.model.utils.ZipHelper.java

private static void writeZip(File file, String parentPath, ZipOutputStream zos) {
    if (file.exists()) {
        if (file.isDirectory()) {//?
            parentPath += file.getName() + File.separator;
            File[] files = file.listFiles();
            for (File f : files) {
                writeZip(f, parentPath, zos);
            }//  www  .j  a v a2 s  .  c  o  m
        } else {
            FileInputStream fis = null;
            try {
                fis = new FileInputStream(file);
                ZipEntry ze = new ZipEntry(parentPath + file.getName());
                zos.putNextEntry(ze);
                byte[] content = new byte[1024];
                int len;
                while ((len = fis.read(content)) != -1) {
                    zos.write(content, 0, len);
                    zos.flush();
                }

            } catch (FileNotFoundException e) {
                log.error("create zip file failed.", e);
            } catch (IOException e) {
                log.error("create zip file failed.", e);
            } finally {
                try {
                    if (fis != null) {
                        fis.close();
                    }
                } catch (IOException e) {
                    log.error("create zip file failed.", e);
                }
            }
        }
    }
}