After reading the JPEG image under Liunx, it is written to the EXIF information. In the WIN platform, it can only write a small number of Chinese under Liunx. Other Chinese can't be identified, it will become "拷 拷", actually These three words have only one word for normal Chinese. I thought about using OutputStream to do byte transcoding. But the generated JPEG file is destroyed because of byte loss. In Byte [] turn CHAR [ ] Specify the encoding method. Not. Depressed. I haven't got it all over the world. Good depression !!!!!!!!