excel 中ActiveX 工具 中的textbox ，以及公式 解析后为emf 图片，
emf 转图片（解决图片上部分显示不全问题） 图片转文字
import com.alibaba.fastjson.JSON; import lombok.AllArgsConstructor; import lombok.Getter; import lombok.NoArgsConstructor; import lombok.ToString; import lombok.extern.slf4j.Slf4j; import net.sourceforge.tess4j.ITesseract; import net.sourceforge.tess4j.Tesseract; import org.apache.commons.httpclient.Header; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.HttpStatus; import org.apache.commons.httpclient.methods.PostMethod; import org.apache.commons.httpclient.methods.multipart.FilePart; import org.apache.commons.httpclient.methods.multipart.MultipartRequestEntity; import org.apache.commons.httpclient.methods.multipart.Part; import org.apache.commons.httpclient.methods.multipart.StringPart; import org.apache.commons.httpclient.params.HttpMethodParams; import org.apache.poi.util.IOUtils; import org.freehep.graphicsio.emf.EMFInputStream; import org.freehep.graphicsio.emf.EMFRenderer; import org.freehep.graphicsio.emf.EMFTag; import org.freehep.util.io.Tag; import javax.imageio.ImageIO; import java.awt.*; import java.awt.geom.AffineTransform; import java.awt.image.BufferedImage; import java.io.*; import java.lang.reflect.Field; import java.lang.reflect.Method; import java.util.*; import java.util.List; /*************************** *<pre> * <dependency> * <groupId>net.sourceforge.tess4j</groupId> * <artifactId>tess4j</artifactId> * <version>4.6.1</version> * </dependency> * <dependency> * <groupId>commons-httpclient</groupId> * <artifactId>commons-httpclient</artifactId> * <version>3.1</version> * </dependency> * <dependency> * <groupId>org.freehep</groupId> * <artifactId>freehep-graphicsio-emf</artifactId> * <version>2.4</version> * </dependency> * @Project Name : base-case-test-service * @Package : com.sea.base.test * @File Name : ImageUtils * @Author : Sea * @Mail : [email protected] * @Date : 2022/9/19 16:09 * @Purpose :1.emf 文件转 png * 2.图片转为文字 * 3.http 表单提交
4.反射工具 * @History : *</pre> ***************************/ @Slf4j public class ImageUtils { private static ITesseract instance = null; static { instance = new Tesseract(); instance.setDatapath("/home/sea/Desktop/FTP/tessdata-main"); instance.setLanguage("chi_sim+eng"); } /** * 直接将emf 文件流转成文本 * @param emfBytes */ public String emf2text(byte[] emfBytes) throws Exception { String tmpPath = "/tmp/"+UUID.randomUUID().toString().replaceAll("-", "")+".png"; File pngFile = emfToPng(emfBytes, tmpPath); String text = img2Text(pngFile,true); deleteFile(pngFile); return text; } /** * @param picFile * @return * @throws Exception */ public String img2Text(File picFile,boolean isBy3rd) throws Exception { String text = null; if(isBy3rd==true) { String url= "http://192.168.186.129:5000/ocrimg"; HashMap<String, Object> formData = new HashMap<String, Object>() {{ put("language", "eng+chi_sim"); put("img", picFile); }}; String s = postFormData(url, formData); return s; }else //local { BufferedImage img = ImageIO.read(picFile); text = instance.doOCR(img); } return text; } /** * @param inEmfPath * @param outPngPath * @return * @throws Exception */ public static File emfToPng( String inEmfPath,String outPngPath) throws Exception{ byte[] bytes = file2byte(inEmfPath); // deleteFile(inEmfPath); return emfToPng(bytes,outPngPath); } /** * 可以解决图片上部分显示不全问题 * @param emfBytes * @param outPngPath * @return */ public static File emfToPng( byte[] emfBytes,String outPngPath){ EMFInputStream eis = null; File outFile = null; try { eis = new EMFInputStream(new ByteArrayInputStream(emfBytes), EMFInputStream.DEFAULT_VERSION); EMFRenderer emfRender = new EMFRenderer(eis); final int height = (int) eis.readHeader().getBounds().getHeight()+30; final int width = (int) eis.readHeader().getBounds().getWidth()+30; final BufferedImage bufImage = new BufferedImage(width, height ,BufferedImage.TYPE_4BYTE_ABGR); Graphics2D g2 = bufImage.createGraphics(); g2.setBackground(Color.RED); // g2.drawString("嘻嘻嘻嘻",1,10); //可以添加水印 // emfRender.paint(g2);//原生方法<有问题，数据显示不全> paint(g2,emfRender); outFile = new File(outPngPath); ImageIO.write(bufImage, "png",outFile); return outFile; } catch (Exception e) { e.printStackTrace(); } finally { IOUtils.closeQuietly(eis); deleteFile(outFile); } return outFile; } /** * @param g2 * @param emfRenderer * @throws Exception */ public static void paint(Graphics2D g2, EMFRenderer emfRenderer) throws Exception{ emfRenderer.setViewportOrigin(new Point(-10, -15)); emfRenderer.setWindowOrigin(new Point(10, 10)); // emfRenderer.setBrushOrigin(new Point(10, 10)); setFiledValue(emfRenderer,"g2",g2); Shape clip = g2.getClip(); AffineTransform at = g2.getTransform(); Map hints = g2.getRenderingHints(); g2.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY); g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g2.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON); g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC); g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON); setFiledValue(emfRenderer,"initialTransform",g2.getTransform()); setFiledValue(emfRenderer,"path",null); setFiledValue(emfRenderer,"figure",null); setFiledValue(emfRenderer,"meterLimit",10); setFiledValue(emfRenderer,"windingRule",0); setFiledValue(emfRenderer,"bkMode",2); setFiledValue(emfRenderer,"useCreatePen",true); setFiledValue(emfRenderer,"scaleMode",4); // setFiledValue(emfRenderer,"windowOrigin",null); // setFiledValue(emfRenderer,"viewportOrigin",null); setFiledValue(emfRenderer,"windowSize",null); setFiledValue(emfRenderer,"viewportSize",null); setFiledValue(emfRenderer,"mapModeIsotropic",false); setFiledValue(emfRenderer,"mapModeTransform",AffineTransform.getScaleInstance(emfRenderer.TWIP_SCALE, emfRenderer.TWIP_SCALE)); runMethod(emfRenderer,"resetTransformation",g2,Graphics2D.class); setFiledValue(emfRenderer,"initialClip",g2.getClip()); Vector tags = (Vector)getPrivateFiledValue(emfRenderer, "tags"); for(int i = 0; i < tags.size(); ++i) { Tag tag = (Tag)tags.get(i); if (tag instanceof EMFTag) { ((EMFTag)tags.get(i)).render(emfRenderer); } else { log.warn("unknown tag: " + tag); } } g2.setRenderingHints(hints); g2.setTransform(at); g2.setClip(clip); } /** * <dependency> * <groupId>commons-httpclient</groupId> * <artifactId>commons-httpclient</artifactId> * <version>3.1</version> * </dependency> * @param url * @param formData * @Author Sea * @return */ public static String postFormData(String url,Map<String,Object> formData) { HttpClient client = new HttpClient(); PostMethod post = new PostMethod(url); try{ List<Part> formArgsList = new ArrayList<>(); for (Map.Entry<String, Object> kv :formData.entrySet()) { String key = kv.getKey(); Object value = kv.getValue(); if(value instanceof File){ FilePart fp = new FilePart(key, (File) value); fp.setCharSet("utf-8"); formArgsList.add(fp); }else { formArgsList.add(new StringPart(key, value+"", "UTF-8")); } } Part[] parts = formArgsList.toArray(new Part[formArgsList.size()]); MultipartRequestEntity entity = new MultipartRequestEntity(parts, new HttpMethodParams()); post.setRequestEntity(entity); client.executeMethod(post); //释放连接，以免超过服务器负荷 String responseBodyAsString = post.getResponseBodyAsString(); return responseBodyAsString; } catch (Exception e) { e.printStackTrace(); }finally { //释放连接，以免超过服务器负荷 post.releaseConnection(); } return null; } public static void deleteFile(File file){ if(file!=null&&file.exists()){ file.delete(); } } /** * @param filePath * @return */ public static byte[] file2byte(String filePath)throws Exception { File file = new File(filePath); byte[] bytes = file2byte(file); return bytes; } /** * @param file * @return */ public static byte[] file2byte(File file) throws Exception { FileInputStream fis = new FileInputStream(file); byte[] bytes = org.apache.commons.io.IOUtils.toByteArray(fis); fis.close(); return bytes; } /** * @param obj * @param fileName * @param value * @throws Exception */ public static void setFiledValue(Object obj, String fileName, Object value) throws Exception { Field name = obj.getClass().getDeclaredField(fileName); name.setAccessible(true); name.set(obj,value); } /** * 获取类的私有属性 ： eg:name * @param objClss * @param fileName * @throws Exception */ public static Object getPrivateFiledValue(Object objClss, String fileName) throws Exception { Field name = objClss.getClass().getDeclaredField(fileName); name.setAccessible(true); Object o = name.get(objClss); return o; } /** * @param obj * @param methodName * @param args * @param parameterTypes * @return * @throws Exception */ public static Object runMethod(Object obj, String methodName, Object args,Class<?>... parameterTypes) throws Exception { Method declaredMethod = obj.getClass().getDeclaredMethod(methodName, parameterTypes); declaredMethod.setAccessible(true); Object invoke = declaredMethod.invoke(obj, args); return invoke; } // @Test public void testOcr() throws Exception { String emfPath = "/home/sea/CCCCCCCCCCC/AAAA_svn_new_AAAA/base-case-test-service/src/test/resources/TextBox2.emf"; String outPath ="/home/sea/CCCCCCCCCCC/AAAA_svn_new_AAAA/base-case-test-service/src/test/resources/TextBox1.png"; emfToPng(emfPath ,outPath ); BufferedImage img = ImageIO.read(new File(outPath)); ITesseract instance = new Tesseract(); instance.setDatapath("/home/sea/Desktop/FTP/tessdata-main"); instance.setLanguage("chi_sim+eng"); String result = instance.doOCR(img); System.err.println(result); } }
标签：emf,g2,ImageUtils,param,String,emfRenderer,new,import,图片 From： https://www.cnblogs.com/lshan/p/16741860.html