小编Luc*_*art的帖子

我想从单个文件中读取图像元数据。我尝试了以下代码：

http://johnbokma.com/java/obtaining-image-metadata.html

当我运行它时，我得到了build successful但什么也没有发生。

public class Metadata {

    public static void main(String[] args) {
        Metadata meta = new Metadata();
        int length = args.length;
        for ( int i = 0; i < length; i++ )
        meta.readAndDisplayMetadata( args[i] );
    }

    void readAndDisplayMetadata( String fileName ) {
        try {

            File file = new File( fileName );
            ImageInputStream iis = ImageIO.createImageInputStream(file);
            Iterator<ImageReader> readers = ImageIO.getImageReaders(iis);

            if (readers.hasNext()) {

                // pick the first available ImageReader
                ImageReader reader = readers.next();

                // attach source to …