【已解决】ERROR net.sourceforge.tess4j.Tesseract - Input not set

报错内容：

21:09:29.692 [main] ERROR net.sourceforge.tess4j.Tesseract - Input not set
java.lang.IllegalStateException: Input not set
at com.sun.imageio.plugins.jpeg.JPEGImageReader.getNumImagesOnThread(JPEGImageReader.java:412)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.getNumImages(JPEGImageReader.java:389)
at net.sourceforge.tess4j.util.ImageIOHelper.getIIOImageList(ImageIOHelper.java:418)
at net.sourceforge.tess4j.Tesseract.doOCR(Tesseract.java:224)
at net.sourceforge.tess4j.Tesseract.doOCR(Tesseract.java:208)
at com.yan.entity.TestDemo.main(TestDemo.java:15)

解决方法：
加图片目录权限

sudo chmod -R 777 所在目录