"Java.lang.RuntimeException:Need to install JAI Image I/O package has been reported under the Tesseract OSGi environment." The solution

Helpful Articles:

HTTP://STACKOVERFLOW.COM/QUESTIONS/22014969/TESS4J-WITH-SPRING-MVC
http://stackoverflow.com/questions/ 22035048/imageio-jar-works-as-standalone-but-not-as-a-web-project
http://stackoverflow.com/questions/ 27394852/getimagewritersbyformatname-doesnt-give-proper-values

A recent tesseract-ocr-3.02+tess4j-1.5.0+servicemix-5.4.0 (a scheme based on OSGi) is always reported java.lang.RuntimeException:Need to install JAI Image I/O package

Refer to the Help file above and try constantly, and finally found the reason is need to put Jai_imageio.jar into the Jre/ext directory (my native Java address C:\Program files\java\jdk1.8.0\jre\lib\ext)

Here's a partial code:

@Override public string GetLocation (String filePath) throws IOException {bufferedimage image = null; Try {//you can either use URL or file for reading image using ImageIO File imagefile = new File ("D:
           \\simplechen\\study\\osgi\\demo\\images\\1.jpg ");
           Image = Imageio.read (ImageFile); ImageIO image Write Example in Java imageio.write (image, "JPG", New File ("d:\\simplechen\\study\\osgi\\demo\\t
           Mp\\1.jpg "));
           Imageio.write (Image, "BMP", New File ("D:\\simplechen\\study\\osgi\\demo\\tmp\\1.bmp"));
           Imageio.write (image, "gif", New File ("D:\\simplechen\\study\\osgi\\demo\\tmp\\1.gif"));
       Imageio.write (Image, "PNG", New File ("D:\\simplechen\\study\\osgi\\demo\\tmp\\1.png"));
       catch (IOException e) {e.printstacktrace ();
		} String Capctha = ""; GetLogger (). log (Logservice.log_info, "Get the picture from the local and parse it;"		
		Url= "+ FilePath); System.err.println ("Call getLocation" + FilePath);
		File datafile = Bundlecontext.getdatafile (FilePath);			
			if (datafile.exists ()) {imageio.scanforplugins (); Tesseract instance = Tesseract.getinstance ();
			JNA Interface Mapping System.err.println ("Verify that the environment supports TIFF");
			String format= "TIF";
			SYSTEM.OUT.PRINTLN (format);
			Iterator<imagereader> readers = imageio.getimagereadersbyformatname (format);
			System.out.println (Readers.hasnext ());
			Iterator<imagewriter> writers = Imageio.getimagewritersbyformatname ("Tiff");
			
			System.out.println (Writers.hasnext ());
				try {Capctha = INSTANCE.DOOCR (datafile). Trim ();
			System.err.println ("Capctha is" +capctha);
				catch (Tesseractexception e) {e.printstacktrace ();
			GetLogger (). log (Logservice.log_error, "Parse file" +datafile.getabsolutepath () + "failed, Cause:" +e);
			} else {GetLogger (). log (Logservice.log_error, "File not Found" +filepath);
		SYSTEM.ERR.PRINTLN ("File not Found");
	return Capctha; }

Note:
Download Jai_imageio.jar (http://www.java2s.com/Code/Jar/j/Downloadjaiimageio11jar.htm)