将文件读取为字节数组，可用与读取图片，在生成图片
1.[代码][Java]代码
InputStream is = null;
ByteArrayOutputStream out = new ByteArrayOutputStream();
try {
is = new FileInputStream(pathStr);// pathStr 文件路径
byte[] b = new byte[1024];
int n;
while ((n = is.read(b)) != -1) {
out.write(b, 0, n);
}// end while
} catch (Exception e) {
log.error(getText("TimingMmsService.error") + e.getMessage());
throw new Exception("System error,SendTimingMms.getBytesFromFile", e);
} finally {
if (is != null) {
try {
is.close();
} catch (Exception e) {
log.error(e);// TODO
}// end try
}// end if
}// end try
return out.toByteArray();
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