识别图片数字-验证码
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?java 通过 JNI 调用开源的OCR 来识别验证码， 这样不要通过调用exe 生成临时文件来获得验证码
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?//演示程序
?protected void doPost(HttpServletRequest req, HttpServletResponse resp)
???throws ServletException, IOException {
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??String url = req.getParameter("j_imgurl");
??InputStream instream = InitEnv.class.getResourceAsStream(InitEnv.CERTPATH);
??ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
??String protocol = "http";
??byte[] b = null;
??try {
???if(url.startsWith("https")){
????? ?protocol = "https";
???}
???PicUtil.getPic(protocol,url,InitEnv.PORT, InitEnv.PWD, instream, outputStream);
???b = outputStream.toByteArray();
???ImageFilter imageFilter = new ImageFilter(new ByteArrayInputStream(b));
???outputStream.close();
???ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();?
???ImageIOHelper.createImage(imageFilter.changeGrey(), byteArrayOutputStream);
???byte[] imgData = byteArrayOutputStream.toByteArray();
???byteArrayOutputStream.close();
???
???if(imgData == null || imgData.length <=0){
??????? return ;
???}
???TesseractEntity tesseractEntity =new TesseractEntity();
???tesseractEntity.setImgByte(imgData);
???tesseractEntity.setIdentifyingCode("-1");
???tesseractEntity.setLength(imgData.length);
???tesseractEntity.setPath(InitEnv.unZipOcrPath);
???tesseractEntity.setLang_option("eng");
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?? //调用JNI 获得图片文字
???String result = AnalysePictureEx.analysePicEx(tesseractEntity);
???String uuid = UUID.randomUUID().toString();
???ImageData.imags.put(uuid, b );
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?? //获得验证码
???req.setAttribute("identifyingCode", tesseractEntity.getIdentifyingCode());
???req.setAttribute("uuid", uuid);
???????? RequestDispatcher requestDispatcher = getServletContext().getRequestDispatcher("/result.jsp");
???????? requestDispatcher.forward(req, resp);
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??} catch (Exception e) {
???? e.printStackTrace();
??}
?}??
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1、?iOCR.war放到 tomcat 下。
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2、访问http://127.0.0.1:8080/iOCR/
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3、输入图片的URL地址。
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4、得到图片数字
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注： 在XP下可以通过
