/**
* 添加一个附件单元
*
* @param fileName 文件名
* @param attachmentStream 文件流
* @param charset 文件编码格式
*/
public void addAttachment(String fileName, InputStream attachmentStream, String charset) {
try {
byte[] bs = null;
if (null != attachmentStream) {
int buffSize = 1024;
byte[] buff = new byte[buffSize];
byte[] temp;
bs = new byte[0];
int readTotal = 0;
while (-1 != (readTotal = attachmentStream.read(buff))) {
temp = new byte[bs.length];
System.arraycopy(bs, 0, temp, 0, bs.length);
bs = new byte[temp.length + readTotal];
System.arraycopy(temp, 0, bs, 0, temp.length);
System.arraycopy(buff, 0, bs, temp.length, readTotal);
}
}
if (null != bs) {
MailPart attachmentPart = new MailPart();
charset = null != charset ? charset : Charset.defaultCharset().name();
String contentType =
getPartContentType(fileName)
+ ";name=\"=?"
+ charset
+ "?B?"
+ toBase64(fileName)
+ "?=\"";
attachmentPart.setCharset(charset);
attachmentPart.setContentType(contentType);
attachmentPart.setContentDisposition(
"attachment;filename=\"=?" + charset + "?B?" + toBase64(fileName) + "?=\"");
attachmentPart.setContent(toBase64(bs));
partSet.add(attachmentPart);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (null != attachmentStream) {
try {
attachmentStream.close();
attachmentStream = null;
} catch (IOException e) {
e.printStackTrace();
}
}
Runtime.getRuntime().gc();
Runtime.getRuntime().runFinalization();
}
}
