Example usage for javax.mail.internet MimePart writeTo

Introduction

In this page you can find the example usage for javax.mail.internet MimePart writeTo.

Prototype

public void writeTo(OutputStream os) throws IOException, MessagingException;

Source Link

Document

Output a bytestream for this Part.

Usage

From source file:mitm.common.mail.MailUtils.java

/**
 * Saves the MimePart to the output stream
 * @param part//from  w w  w.  j  a va2  s  .  c o  m
 * @param output
 * @throws IOException
 * @throws MessagingException
 */
public static void writeMessage(MimePart part, OutputStream output) throws IOException, MessagingException {
    /*
     * we need to store the result in a temporary buffer so we can fall back 
     * on a different procedure when writeTo fails. If not, MimePart#writeTo might
     * fail halfway and some data has already been written to output. 
     */
    DeferredFileOutputStream buffer = new DeferredFileOutputStream(SizeUtils.MB, FileConstants.TEMP_FILE_PREFIX,
            null, null);

    /*
     * First try the writeTo method. Sometimes this will fail when the message uses 
     * an unsupported or corrupt encoding. For example the content encoding says that
     * the message is base64 encoded but it is not.  
     */
    try {
        part.writeTo(buffer);

        /*
         * Need to close the DeferredFileOutputStream before we can write
         */
        buffer.close();

        /* 
         * writeTo was successful so we can copy the result to the final output
         */
        buffer.writeTo(output);
    } catch (IOException e) {
        writeMessageRaw(part, output);
    } catch (MessagingException e) {
        writeMessageRaw(part, output);
    } finally {
        /*
         * Delete any possible temp file used by DeferredFileOutputStream.
         */
        FileUtils.deleteQuietly(buffer.getFile());
    }
}

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