提取swf文件元信息、压缩swf、解压swf都可以处理，来自于http://www.brooksandrus.com/blog/category/java/，或者直接这里下载。

一个小例子：

         SWFHeader header = new SWFHeader("G:\\mplayer\\test.swf");
        System.out.println("signature:   " + header.getSignature());
        System.out.println("version:     " + header.getVersion());
        System.out.println("compression: " + header.getCompressionType());
        System.out.println("size:        " + header.getSize());
        System.out.println("nbits:       " + header.getNbits());
        System.out.println("xmax:        " + header.getXmax());
        System.out.println("ymax:        " + header.getYmax());
        System.out.println("width:       " + header.getWidth());
        System.out.println("height:      " + header.getHeight());
        System.out.println("frameRate:   " + header.getFrameRate());
        System.out.println("frameCount:  " + header.getFrameCount());

 
压缩、解压缩，需要注意生成的文件将覆盖原文件：

//压缩
SWFCompressor compressor=new SWFCompressor("G:\\mplayer\\test.swf");
//解压缩
SWFDecompressor decompressor=new SWFDecompressor("G:\\mplayer\\test.swf");