Examples with BMPImageReader com.sun.imageio.plugins.bmp.BMPImageReader used on opensource projects

Example 1 with BMPImageReader

use of com.sun.imageio.plugins.bmp.BMPImageReader in project twitter-2-weibo by rjyo.

the class ImageItem method getContentType.

public static String getContentType(byte[] mapObj) throws IOException {
    String type = "";
    ByteArrayInputStream bais = null;
    MemoryCacheImageInputStream mcis = null;
    try {
        bais = new ByteArrayInputStream(mapObj);
        mcis = new MemoryCacheImageInputStream(bais);
        Iterator itr = ImageIO.getImageReaders(mcis);
        while (itr.hasNext()) {
            ImageReader reader = (ImageReader) itr.next();
            if (reader instanceof GIFImageReader) {
                type = "image/gif";
            } else if (reader instanceof JPEGImageReader) {
                type = "image/jpeg";
            } else if (reader instanceof PNGImageReader) {
                type = "image/png";
            } else if (reader instanceof BMPImageReader) {
                type = "application/x-bmp";
            }
        }
    } finally {
        if (bais != null) {
            try {
                bais.close();
            } catch (IOException ioe) {
            }
        }
        if (mcis != null) {
            try {
                mcis.close();
            } catch (IOException ioe) {
            }
        }
    }
    return type;
}