Example usage for java.io InputStreamReader read

Introduction

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

Prototype

public int read(java.nio.CharBuffer target) throws IOException 

Source Link

Document

Attempts to read characters into the specified character buffer.

Usage

From source file:com.hunantv.fw.utils.StreamUtils.java

/**
 * Copy the contents of the given InputStream into a String.
 * Leaves the stream open when done./* w w  w.  j a v  a 2 s  .c  o m*/
 * @param in the InputStream to copy from
 * @return the String that has been copied to
 * @throws IOException in case of I/O errors
 */
public static String copyToString(InputStream in, Charset charset) throws IOException {
    StringBuilder out = new StringBuilder();
    InputStreamReader reader = new InputStreamReader(in, charset);
    char[] buffer = new char[BUFFER_SIZE];
    int bytesRead = -1;
    while ((bytesRead = reader.read(buffer)) != -1) {
        out.append(buffer, 0, bytesRead);
    }
    return out.toString();
}

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From source file:org.crazydog.util.spring.StreamUtils.java

/**
 * Copy the contents of the given InputStream into a String.
 * Leaves the stream open when done./*from   w ww .  jav a2s  . c o m*/
 * @param in the InputStream to copy from
 * @return the String that has been copied to
 * @throws IOException in case of I/O errors
 */
public static String copyToString(InputStream in, Charset charset) throws IOException {
    org.springframework.util.Assert.notNull(in, "No InputStream specified");
    StringBuilder out = new StringBuilder();
    InputStreamReader reader = new InputStreamReader(in, charset);
    char[] buffer = new char[BUFFER_SIZE];
    int bytesRead = -1;
    while ((bytesRead = reader.read(buffer)) != -1) {
        out.append(buffer, 0, bytesRead);
    }
    return out.toString();
}

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From source file:org.globusonline.transfer.DelegateProxyActivation.java

public static String readEntireStream(InputStreamReader in) throws IOException {
    StringBuilder contents = new StringBuilder();
    char[] buffer = new char[4096];
    int read = 0;
    do {//  ww w.  java  2s .  c o  m
        contents.append(buffer, 0, read);
        read = in.read(buffer);
    } while (read >= 0);
    return contents.toString();
}

---

From source file:Main.java

/**
 * Using a Reader and a Writer, returns a String from an InputStream.
 *
 * Method based on Hypersonic Code/* w  ww  .  ja  v  a  2 s . c  om*/
 *
 * @param x InputStream to read from
 * @throws IOException
 * @return a Java string
 */
public static String inputStreamToString(InputStream x, String encoding) throws IOException {

    InputStreamReader in = new InputStreamReader(x, encoding);
    StringWriter writer = new StringWriter();
    int blocksize = 8 * 1024;
    char[] buffer = new char[blocksize];

    for (;;) {
        int read = in.read(buffer);

        if (read == -1) {
            break;
        }

        writer.write(buffer, 0, read);
    }

    writer.close();

    return writer.toString();
}

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From source file:org.ingini.mongodb.jongo.example.util.CollectionManager.java

private static void fill(DBCollection collection, String collectionContentFilePath) {
    StringBuilder stringBuilder = new StringBuilder();

    try {/*from w  ww  . ja  va 2 s.  c o m*/
        InputStreamReader inputStreamReader = new InputStreamReader( //
                CollectionManager.class.getClassLoader().getResourceAsStream(collectionContentFilePath),
                "UTF-8");
        CharBuffer buf = CharBuffer.allocate(BUFFER_SIZE);
        for (int read = inputStreamReader.read(buf); read != EOF; read = inputStreamReader.read(buf)) {
            buf.flip();
            stringBuilder.append(buf, START, read);

        }
    } catch (IOException e) {
        System.out.println("Unable to read input stream due to an exception! Exception: "
                + ExceptionUtils.getStackTrace(e));
        throw new IllegalStateException(e);
    }

    BasicDBList parse = (BasicDBList) JSON.parse(stringBuilder.toString(),
            new MongoIdTransformerJSONCallback());
    collection.insert(parse.toArray(new DBObject[parse.size()]));
}

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From source file:org.pentaho.platform.api.repository2.unified.data.simple.SimpleRepositoryFileData.java

private static String toString(final InputStream input, final String encoding) throws IOException {
    final int DEFAULT_BUFFER_SIZE = 1024 * 4;
    StringWriter sw = new StringWriter();
    InputStreamReader in = new InputStreamReader(input, encoding);
    char[] buffer = new char[DEFAULT_BUFFER_SIZE];
    int n = 0;/*  w ww .ja  v  a  2s. co  m*/
    while (-1 != (n = in.read(buffer))) {
        sw.write(buffer, 0, n);
    }
    return sw.toString();
}

---

From source file:com.sun.socialsite.config.RuntimeConfig.java

/**
 * Get the runtime configuration definitions XML file as a string.
 *
 * This is basically a convenience method for accessing this file.
 * The file itself contains meta-data about what configuration
 * properties we change at runtime via the UI and how to setup
 * the display for editing those properties.
 *///from w  w w.jav a  2  s.co  m
public static String getRuntimeConfigDefsAsString() {

    log.debug("Trying to load runtime config defs file");

    try {

        InputStream in = Config.class.getResourceAsStream(DEFINITIONS_FILE);
        InputStreamReader reader = new InputStreamReader(in);
        StringWriter configString = new StringWriter();

        char[] buf = new char[8196];
        int length = 0;
        while ((length = reader.read(buf)) > 0) {
            configString.write(buf, 0, length);
        }

        reader.close();

        return configString.toString();

    } catch (Exception e) {
        log.error("Error loading runtime config defs file", e);
    }

    return "";
}

---

From source file:com.xerox.amazonws.ec2.EC2Utils.java

/**
 * This method makes a best effort to fetch a piece of instance metadata.
 *
 * @param key the name of the metadata to fetch
 * @return value of the metadata item/*from  w  w w  . j a  va  2 s  . com*/
 */
public static String getInstanceUserdata() throws IOException {
    int retries = 0;
    while (true) {
        try {
            URL url = new URL("http://169.254.169.254/latest/user-data/");
            InputStreamReader rdr = new InputStreamReader(url.openStream());
            StringWriter wtr = new StringWriter();
            char[] buf = new char[1024];
            int bytes;
            while ((bytes = rdr.read(buf)) > -1) {
                if (bytes > 0) {
                    wtr.write(buf, 0, bytes);
                }
            }
            rdr.close();
            return wtr.toString();
        } catch (IOException ex) {
            if (retries == 5) {
                logger.debug("Problem getting user data, retries exhausted...");
                return null;
            } else {
                logger.debug("Problem getting user data, retrying...");
                try {
                    Thread.sleep((int) Math.pow(2.0, retries) * 1000);
                } catch (InterruptedException e) {
                }
            }
        }
    }
}

---

From source file:Main.java

public static String readStreamToString(InputStream inputStream) throws IOException {
    BufferedInputStream bufferedInputStream = null;
    InputStreamReader reader = null;
    try {//from  w  w  w.  j a  v  a 2s .  c o  m
        bufferedInputStream = new BufferedInputStream(inputStream);
        reader = new InputStreamReader(bufferedInputStream);
        StringBuilder stringBuilder = new StringBuilder();

        final int bufferSize = 1024 * 2;
        char[] buffer = new char[bufferSize];
        int n = 0;
        while ((n = reader.read(buffer)) != -1) {
            stringBuilder.append(buffer, 0, n);
        }

        return stringBuilder.toString();
    } finally {
        closeQuietly(bufferedInputStream);
        closeQuietly(reader);
    }
}

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From source file:org.apache.roller.planet.config.PlanetRuntimeConfig.java

/**
 * Get the runtime configuration definitions XML file as a string.
 *
 * This is basically a convenience method for accessing this file.
 * The file itself contains meta-data about what configuration
 * properties we change at runtime via the UI and how to setup
 * the display for editing those properties.
 *///  w  ww. ja v a 2  s. co  m
public static String getRuntimeConfigDefsAsString() {

    log.debug("Trying to load runtime config defs file");

    try {
        InputStreamReader reader = new InputStreamReader(
                PlanetConfig.class.getResourceAsStream(runtime_config));
        StringWriter configString = new StringWriter();

        char[] buf = new char[8196];
        int length = 0;
        while ((length = reader.read(buf)) > 0)
            configString.write(buf, 0, length);

        reader.close();

        return configString.toString();
    } catch (Exception e) {
        log.error("Error loading runtime config defs file", e);
    }

    return "";
}

---

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