相关疑难解决方法(0)

除了使用ImageIO.read获取图像高度和宽度之外还有其他方法吗？

因为我遇到了锁定线程的问题.

at com.sun.medialib.codec.jpeg.Decoder.njpeg_decode(Native Method)      
at com.sun.medialib.codec.jpeg.Decoder.decode(Decoder.java:87)      
at com.sun.media.imageioimpl.plugins.jpeg.CLibJPEGImageReader.decode(CLibJPEGImageReader.java:73)     
 - locked <0xd96fb668> (a com.sun.media.imageioimpl.plugins.jpeg.CLibJPEGImageReader)      
at com.sun.media.imageioimpl.plugins.clib.CLibImageReader.getImage(CLibImageReader.java:320)    
 - locked <0xd96fb668> (a com.sun.media.imageioimpl.plugins.jpeg.CLibJPEGImageReader)     
 at com.sun.media.imageioimpl.plugins.clib.CLibImageReader.read(CLibImageReader.java:384)   
 - locked <0xd96fb668> (a com.sun.media.imageioimpl.plugins.jpeg.CLibJPEGImageReader)      
at javax.imageio.ImageIO.read(ImageIO.java:1400)      
at javax.imageio.ImageIO.read(ImageIO.java:1322)

此错误仅发生在Sun应用服务器上,因此我怀疑它是Sun错误.

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 …