添加向量库

qianbao
1 parent f2e11f8f
Showing 3 changed files with 284 additions and 587 deletions
src/main/java/com/xly/ocr/service/OcrService.java
src/main/java/com/xly/ocr/util/OcrUtil.java
src/main/java/com/xly/ocr/web/OcrController.java
@@ -2,21 +2,10 @@ package com.xly.ocr.service;
  
 import com.xly.ocr.util.OcrUtil;
 import lombok.extern.slf4j.Slf4j;
-import net.sourceforge.tess4j.Tesseract;
-import net.sourceforge.tess4j.TesseractException;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Service;
 import org.springframework.web.multipart.MultipartFile;
  
-import javax.imageio.ImageIO;
-import java.awt.*;
-import java.awt.image.BufferedImage;
-import java.io.File;
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
 import java.util.Arrays;
 import java.util.List;
  
@@ -24,473 +13,64 @@ import java.util.List;
 @Service("ocrService")
 public class OcrService {
  
-    private static final Logger logger = LoggerFactory.getLogger(OcrService.class);
-
     @Value("${ocr.tmpPath}")
     private String tmpPath;
  
-
-    private final Tesseract tesseract;
-
-    // 配置参数
-    private static final List<String> ALLOWED_EXTENSIONS = Arrays.asList(".jpg", ".jpeg", ".png", ".bmp", ".tiff", ".gif");
+    private static final List<String> ALLOWED_EXTENSIONS = Arrays.asList(
+            ".jpg", ".jpeg", ".png", ".bmp", ".tiff", ".gif"
+    );
     private static final long MAX_FILE_SIZE = 10 * 1024 * 1024; // 10MB
-    private static final int BINARIZE_THRESHOLD = 127;
-    private static final int MIN_WIDTH = 800;
-    private static final int MIN_HEIGHT = 200;
-
-    // 性能统计
-    private static class OcrStats {
-        long preprocessTime = 0;
-        long ocrTime = 0;
-        String imageSize = "";
-
-        @Override
-        public String toString() {
-            return String.format("预处理耗时: %dms, OCR耗时: %dms, 图片尺寸: %s",
-                    preprocessTime, ocrTime, imageSize);
-        }
-    }
-
-    public OcrService(@Value("${tesseract.datapath}") String dataPath) {
-        this.tesseract = new Tesseract();
-
-        // 基础配置
-        this.tesseract.setDatapath(dataPath);
-        this.tesseract.setLanguage("chi_sim+eng");
-
-        // 优化识别参数
-        configureTesseract();
-
-        logger.info("Tesseract 初始化完成，语言包路径: {}, 语言: chi_sim+eng", dataPath);
-    }
-
-    /**
-     * 配置 Tesseract 参数
-     */
-    private void configureTesseract() {
-        // 页面分割模式：3 = 自动页面分割，但没有方向检测
-        this.tesseract.setPageSegMode(3);
-
-        // OCR 引擎模式：3 = 默认，基于 LSTM 和传统引擎
-        this.tesseract.setOcrEngineMode(3);
-
-        // 提高中文识别率
-        this.tesseract.setVariable("preserve_interword_spaces", "1");
-        this.tesseract.setVariable("textord_force_make_prop_words", "true");
-
-        // 可选：设置字符白名单（根据需要启用）
-        // this.tesseract.setVariable("tessedit_char_whitelist",
-        //     "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ，。！？；：\"‘’“”【】（）《》");
-
-        // 可选：设置黑名单（排除干扰字符）
-        // this.tesseract.setVariable("tessedit_char_blacklist", "|\\/`~@#$%^&*()_+={}[]");
-    }
-
-    /**
-     * 图片预处理 - 优化的处理流程
-     */
-    private BufferedImage preprocessImage(BufferedImage originalImage) {
-        if (originalImage == null) {
-            return null;
-        }
-
-        try {
-            long startTime = System.currentTimeMillis();
-
-            // 1. 自动调整亮度和对比度
-            BufferedImage adjusted = autoAdjustBrightnessContrast(originalImage);
-
-            // 2. 灰度化
-            BufferedImage grayImage = toGray(adjusted);
-
-            // 3. 自适应二值化（比固定阈值更好）
-            BufferedImage binaryImage = adaptiveBinarize(grayImage);
-
-            // 4. 降噪处理
-            BufferedImage denoisedImage = denoise(binaryImage);
-
-            // 5. 放大图片（如果太小）
-            BufferedImage scaledImage = scaleImageIfNeeded(denoisedImage);
-
-            // 6. 可选：边缘增强（提高清晰度）
-            BufferedImage enhancedImage = sharpen(scaledImage);
-
-            long endTime = System.currentTimeMillis();
-            logger.debug("图片预处理耗时: {}ms", endTime - startTime);
-
-            return enhancedImage;
-
-        } catch (Exception e) {
-            logger.error("图片预处理失败: {}", e.getMessage(), e);
-            return originalImage;
-        }
-    }
-
-    /**
-     * 自动调整亮度和对比度
-     */
-    private BufferedImage autoAdjustBrightnessContrast(BufferedImage image) {
-        BufferedImage result = new BufferedImage(
-                image.getWidth(), image.getHeight(), image.getType());
-
-        // 计算亮度直方图
-        int[] histogram = new int[256];
-        for (int y = 0; y < image.getHeight(); y++) {
-            for (int x = 0; x < image.getWidth(); x++) {
-                int rgb = image.getRGB(x, y);
-                int gray = (int)((rgb >> 16 & 0xFF) * 0.299 +
-                        (rgb >> 8 & 0xFF) * 0.587 +
-                        (rgb & 0xFF) * 0.114);
-                histogram[gray]++;
-            }
-        }
-
-        // 找到黑色和白色的阈值
-        int total = image.getWidth() * image.getHeight();
-        int blackThreshold = 0;
-        int whiteThreshold = 255;
-
-        int sum = 0;
-        for (int i = 0; i < 256; i++) {
-            sum += histogram[i];
-            if (sum > total * 0.05) {
-                blackThreshold = i;
-                break;
-            }
-        }
-
-        sum = 0;
-        for (int i = 255; i >= 0; i--) {
-            sum += histogram[i];
-            if (sum > total * 0.05) {
-                whiteThreshold = i;
-                break;
-            }
-        }
-
-        // 应用对比度拉伸
-        for (int y = 0; y < image.getHeight(); y++) {
-            for (int x = 0; x < image.getWidth(); x++) {
-                int rgb = image.getRGB(x, y);
-                int r = (rgb >> 16) & 0xFF;
-                int g = (rgb >> 8) & 0xFF;
-                int b = rgb & 0xFF;
-
-                // 拉伸到 0-255 范围
-                r = stretchValue(r, blackThreshold, whiteThreshold);
-                g = stretchValue(g, blackThreshold, whiteThreshold);
-                b = stretchValue(b, blackThreshold, whiteThreshold);
-
-                result.setRGB(x, y, (r << 16) | (g << 8) | b);
-            }
-        }
-
-        return result;
-    }
-
-    private int stretchValue(int value, int black, int white) {
-        if (value <= black) return 0;
-        if (value >= white) return 255;
-        return (value - black) * 255 / (white - black);
-    }
-
-    /**
-     * 灰度化
-     */
-    private BufferedImage toGray(BufferedImage image) {
-        BufferedImage result = new BufferedImage(
-                image.getWidth(), image.getHeight(), BufferedImage.TYPE_BYTE_GRAY);
-        Graphics g = result.getGraphics();
-        g.drawImage(image, 0, 0, null);
-        g.dispose();
-        return result;
-    }
-
-    /**
-     * 自适应二值化 - 根据局部区域动态调整阈值
-     */
-    private BufferedImage adaptiveBinarize(BufferedImage image) {
-        BufferedImage result = new BufferedImage(
-                image.getWidth(), image.getHeight(), BufferedImage.TYPE_BYTE_BINARY);
-
-        int blockSize = 15;
-        int constant = 5;
-
-        for (int y = 0; y < image.getHeight(); y++) {
-            for (int x = 0; x < image.getWidth(); x++) {
-                // 计算局部区域的平均值
-                int sum = 0;
-                int count = 0;
-                for (int ky = -blockSize/2; ky <= blockSize/2; ky++) {
-                    for (int kx = -blockSize/2; kx <= blockSize/2; kx++) {
-                        int px = Math.min(Math.max(x + kx, 0), image.getWidth() - 1);
-                        int py = Math.min(Math.max(y + ky, 0), image.getHeight() - 1);
-                        sum += new Color(image.getRGB(px, py)).getRed();
-                        count++;
-                    }
-                }
-                int threshold = sum / count - constant;
-
-                // 应用阈值
-                int gray = new Color(image.getRGB(x, y)).getRed();
-                int binary = gray > threshold ? 255 : 0;
-                result.setRGB(x, y, new Color(binary, binary, binary).getRGB());
-            }
-        }
-        return result;
-    }
  
     /**
-     * 降噪 - 优化的中值滤波
+     * 从 MultipartFile 中提取文字
      */
-    private BufferedImage denoise(BufferedImage image) {
-        BufferedImage result = new BufferedImage(
-                image.getWidth(), image.getHeight(), image.getType());
-
-        for (int y = 1; y < image.getHeight() - 1; y++) {
-            for (int x = 1; x < image.getWidth() - 1; x++) {
-                int[] neighbors = new int[9];
-                int index = 0;
-                for (int ky = -1; ky <= 1; ky++) {
-                    for (int kx = -1; kx <= 1; kx++) {
-                        neighbors[index++] = new Color(image.getRGB(x + kx, y + ky)).getRed();
-                    }
-                }
-                Arrays.sort(neighbors);
-                int median = neighbors[4];
-                result.setRGB(x, y, new Color(median, median, median).getRGB());
-            }
-        }
-
-        // 处理边缘
-        for (int x = 0; x < image.getWidth(); x++) {
-            result.setRGB(x, 0, image.getRGB(x, 0));
-            result.setRGB(x, image.getHeight() - 1, image.getRGB(x, image.getHeight() - 1));
-        }
-        for (int y = 0; y < image.getHeight(); y++) {
-            result.setRGB(0, y, image.getRGB(0, y));
-            result.setRGB(image.getWidth() - 1, y, image.getRGB(image.getWidth() - 1, y));
-        }
-
-        return result;
-    }
-
-    /**
-     * 锐化处理 - 增强文字边缘
-     */
-    private BufferedImage sharpen(BufferedImage image) {
-        BufferedImage result = new BufferedImage(
-                image.getWidth(), image.getHeight(), image.getType());
-
-        // 拉普拉斯锐化核
-        float[] sharpenKernel = {
-                0, -1, 0,
-                -1, 5, -1,
-                0, -1, 0
-        };
-
-        for (int y = 1; y < image.getHeight() - 1; y++) {
-            for (int x = 1; x < image.getWidth() - 1; x++) {
-                int sum = 0;
-                int index = 0;
-                for (int ky = -1; ky <= 1; ky++) {
-                    for (int kx = -1; kx <= 1; kx++) {
-                        int gray = new Color(image.getRGB(x + kx, y + ky)).getRed();
-                        sum += gray * sharpenKernel[index++];
-                    }
-                }
-                sum = Math.min(255, Math.max(0, sum));
-                result.setRGB(x, y, new Color(sum, sum, sum).getRGB());
-            }
-        }
-
-        return result;
-    }
-
-    /**
-     * 放大图片（如果图片太小）
-     */
-    private BufferedImage scaleImageIfNeeded(BufferedImage image) {
-        int width = image.getWidth();
-        int height = image.getHeight();
-
-        if (width >= MIN_WIDTH && height >= MIN_HEIGHT) {
-            return image;
-        }
-
-        double scaleX = (double) MIN_WIDTH / width;
-        double scaleY = (double) MIN_HEIGHT / height;
-        double scale = Math.max(scaleX, scaleY);
-
-        int newWidth = (int) (width * scale);
-        int newHeight = (int) (height * scale);
-
-        // 使用更好的插值算法
-        BufferedImage result = new BufferedImage(newWidth, newHeight, image.getType());
-        Graphics2D g2d = result.createGraphics();
-        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
-                RenderingHints.VALUE_INTERPOLATION_BICUBIC);
-        g2d.setRenderingHint(RenderingHints.KEY_RENDERING,
-                RenderingHints.VALUE_RENDER_QUALITY);
-        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
-                RenderingHints.VALUE_ANTIALIAS_ON);
-        g2d.drawImage(image, 0, 0, newWidth, newHeight, null);
-        g2d.dispose();
-
-        logger.debug("图片已放大: {}x{} -> {}x{}", width, height, newWidth, newHeight);
-        return result;
-    }
-
-    /**
-     * 识别图片中的文字（增强版）
-     */
-    public String extractText(File imageFile) {
-        if (imageFile == null || !imageFile.exists()) {
-            logger.error("图片文件不存在或为空");
-            return "图片文件不存在";
+    public String extractTextFromMultipartFile(MultipartFile file) {
+        // 1. 验证文件
+        String validationError = validateFile(file);
+        if (validationError != null) {
+            return validationError;
         }
  
-        OcrStats stats = new OcrStats();
-
+        // 2. 调用 OCR 工具类识别
         try {
-            logger.info("开始识别图片: {}, 大小: {} bytes",
-                    imageFile.getAbsolutePath(), imageFile.length());
+            String result = OcrUtil.ocrFile(file, tmpPath);
  
-            // 读取原始图片
-            long readStart = System.currentTimeMillis();
-            BufferedImage originalImage = ImageIO.read(imageFile);
-            if (originalImage == null) {
-                return "无法读取图片文件，请确保图片格式正确";
-            }
-            stats.imageSize = originalImage.getWidth() + "x" + originalImage.getHeight();
-
-            // 图片预处理
-            long preprocessStart = System.currentTimeMillis();
-            BufferedImage processedImage = preprocessImage(originalImage);
-            stats.preprocessTime = System.currentTimeMillis() - preprocessStart;
-
-            // 可选：保存预处理图片用于调试（生产环境可注释）
-            if (logger.isDebugEnabled()) {
-                saveDebugImage(processedImage, imageFile);
-            }
-
-            // 执行 OCR
-            long ocrStart = System.currentTimeMillis();
-            String result = tesseract.doOCR(processedImage);
-            stats.ocrTime = System.currentTimeMillis() - ocrStart;
-
-            logger.info("识别完成 - {}", stats);
-
-            // 清理识别结果
-            result = cleanResult(result);
-
-            if (result.isEmpty()) {
-                logger.warn("识别结果为空，可能需要调整预处理参数");
+            if (result == null || result.trim().isEmpty()) {
+                log.warn("未识别到文字内容，文件: {}", file.getOriginalFilename());
+                return "未识别到文字内容";
             }
  
+            log.info("识别成功，文件: {}, 文字长度: {}",
+                    file.getOriginalFilename(), result.length());
             return result;
  
-        } catch (TesseractException e) {
-            logger.error("OCR识别失败: {}", e.getMessage(), e);
+        } catch (Exception e) {
+            log.error("OCR识别异常: {}", e.getMessage(), e);
             return "OCR识别失败: " + e.getMessage();
-        } catch (IOException e) {
-            logger.error("读取图片失败: {}", e.getMessage(), e);
-            return "读取图片失败: " + e.getMessage();
-        }
-    }
-
-    /**
-     * 保存调试图片（仅用于调试）
-     */
-    private void saveDebugImage(BufferedImage image, File originalFile) {
-        try {
-            String debugPath = originalFile.getParent() + "/debug_" + originalFile.getName();
-            File debugFile = new File(debugPath);
-            ImageIO.write(image, "png", debugFile);
-            logger.debug("预处理图片已保存: {}", debugPath);
-        } catch (IOException e) {
-            logger.debug("保存调试图片失败: {}", e.getMessage());
-        }
-    }
-
-    /**
-     * 清理识别结果
-     */
-    private String cleanResult(String result) {
-        if (result == null || result.isEmpty()) {
-            return "";
-        }
-
-        // 去除首尾空白
-        result = result.trim();
-
-        // 规范化换行符
-        result = result.replaceAll("\\r\\n", "\n")
-                .replaceAll("\\r", "\n");
-
-        // 合并多个空行
-        result = result.replaceAll("\n{3,}", "\n\n");
-
-        // 去除行首行尾空格
-        String[] lines = result.split("\n");
-        StringBuilder cleaned = new StringBuilder();
-        for (String line : lines) {
-            cleaned.append(line.trim()).append("\n");
         }
-
-        return cleaned.toString().trim();
     }
  
     /**
-     * 封装方法，接收上传的 MultipartFile
+     * 验证文件
      */
-    public String extractTextFromMultipartFile(MultipartFile file) {
+    private String validateFile(MultipartFile file) {
         if (file == null || file.isEmpty()) {
-            logger.warn("上传的文件为空");
+            log.warn("上传的文件为空");
             return "上传的文件为空";
         }
  
-        // 验证文件大小
         if (file.getSize() > MAX_FILE_SIZE) {
-            logger.warn("文件过大: {} bytes, 超过限制: {} bytes",
-                    file.getSize(), MAX_FILE_SIZE);
+            log.warn("文件过大: {} bytes", file.getSize());
             return String.format("文件过大，最大支持 %dMB", MAX_FILE_SIZE / 1024 / 1024);
         }
  
-        // 验证文件格式
         String originalFilename = file.getOriginalFilename();
         if (originalFilename != null && !isAllowedImage(originalFilename)) {
-            logger.warn("不支持的文件格式: {}", originalFilename);
+            log.warn("不支持的文件格式: {}", originalFilename);
             return "不支持的文件格式，仅支持: " + String.join(", ", ALLOWED_EXTENSIONS);
         }
-        String sText = OcrUtil.ocrFile(file,tmpPath);
-        return sText;
-    }
-
-    /**
-     * 清理临时文件
-     */
-    private void cleanupTempFile(Path tempFile) {
-        if (tempFile != null) {
-            try {
-                Files.deleteIfExists(tempFile);
-                logger.debug("临时文件已删除: {}", tempFile);
-            } catch (IOException e) {
-                logger.warn("删除临时文件失败: {}", tempFile, e);
-                // 注册JVM退出时删除
-                tempFile.toFile().deleteOnExit();
-            }
-        }
-    }
  
-    /**
-     * 批量识别（用于多张图片）
-     */
-    public List<String> batchExtractText(List<MultipartFile> files) {
-        return files.stream()
-                .map(this::extractTextFromMultipartFile)
-                .collect(java.util.stream.Collectors.toList());
+        return null;
     }
  
     /**
@@ -504,14 +84,4 @@ public class OcrService {
         return ALLOWED_EXTENSIONS.stream()
                 .anyMatch(lowerFilename::endsWith);
     }
-
-    /**
-     * 获取文件扩展名
-     */
-    private String getFileExtension(String filename) {
-        if (filename == null || !filename.contains(".")) {
-            return ".jpg";
-        }
-        return filename.substring(filename.lastIndexOf("."));
-    }
 }
 \ No newline at end of file
@@ -16,107 +16,262 @@ import java.awt.image.BufferedImage;
 import java.io.File;
 import java.io.IOException;
 import java.util.List;
+import java.util.UUID;
  
 @Slf4j
 public class OcrUtil {
  
-    static {
+    // 引擎实例（单例，避免重复初始化）
+    private static volatile InferenceEngine engine;
+    private static final Object LOCK = new Object();
+
+    /**
+     * 获取 OCR 引擎实例（懒加载单例）
+     */
+    private static InferenceEngine getEngine() {
+        if (engine == null) {
+            synchronized (LOCK) {
+                if (engine == null) {
+                    try {
+                        log.info("初始化 OCR 引擎 (PP-OCRv4)...");
+                        engine = InferenceEngine.getInstance(Model.ONNX_PPOCR_V4);
+                        log.info("OCR 引擎初始化成功");
+                    } catch (Exception e) {
+                        log.error("OCR 引擎初始化失败: {}", e.getMessage(), e);
+                        throw new RuntimeException("OCR 引擎初始化失败", e);
+                    }
+                }
+            }
+        }
+        return engine;
+    }
+
+    /**
+     * 识别图片中的文字
+     * @param imageFile 上传的图片文件
+     * @param tempDir 临时目录路径
+     * @return 识别出的文字
+     */
+    public static String ocrFile(MultipartFile imageFile, String tempDir) {
+        File tempImageFile = null;
+        String processedImagePath = null;
+
         try {
-            String customTempDir = "D:/temp/ocrJava";
-            File tempDir = new File(customTempDir);
-            if (!tempDir.exists()) {
-                tempDir.mkdirs();
+            log.info("开始 OCR 识别，文件: {}", imageFile.getOriginalFilename());
+
+            // 1. 验证输入
+            if (imageFile == null || imageFile.isEmpty()) {
+                log.warn("图片文件为空");
+                return StrUtil.EMPTY;
+            }
+
+            // 2. 创建临时目录
+            ensureTempDirExists(tempDir);
+
+            // 3. MultipartFile 转 File
+            tempImageFile = multipartFileToFile(imageFile, tempDir);
+            if (tempImageFile == null || !tempImageFile.exists()) {
+                log.error("转换临时文件失败");
+                return StrUtil.EMPTY;
+            }
+
+            // 4. 图像预处理
+            BufferedImage processedImage = preprocessImage(tempImageFile);
+            if (processedImage == null) {
+                log.error("图像预处理失败");
+                return StrUtil.EMPTY;
+            }
+
+            // 5. 保存预处理图片
+            processedImagePath = saveProcessedImage(processedImage, tempDir);
+            if (processedImagePath == null) {
+                log.error("保存预处理图片失败");
+                return StrUtil.EMPTY;
+            }
+
+            // 6. 执行 OCR 识别
+            String text = performOcr(processedImagePath);
+
+            // 7. 记录识别结果
+            if (StrUtil.isNotBlank(text)) {
+                log.info("OCR 识别成功，文字长度: {} 字符", text.length());
+                log.debug("识别结果: {}", text);
+            } else {
+                log.warn("OCR 识别结果为空");
             }
-            System.setProperty("java.io.tmpdir", customTempDir);
-            System.setProperty("TMP", customTempDir);
-            System.setProperty("TEMP", customTempDir);
  
-            System.out.println("==================================");
-            System.out.println("临时目录: " + System.getProperty("java.io.tmpdir"));
-            System.out.println("==================================");
+            return text;
  
         } catch (Exception e) {
-            System.err.println("设置临时目录失败: " + e.getMessage());
+            log.error("OCR 识别失败: {}", e.getMessage(), e);
+            return StrUtil.EMPTY;
+        } finally {
+            // 清理临时文件
+            cleanupTempFiles(tempImageFile, processedImagePath);
         }
     }
  
-    public static String ocrFile(MultipartFile imageFile, String sTmpPath){
-        String processedImagePath = StrUtil.EMPTY;
+    /**
+     * 确保临时目录存在
+     */
+    private static void ensureTempDirExists(String tempDir) {
+        if (StrUtil.isBlank(tempDir)) {
+            tempDir = System.getProperty("java.io.tmpdir");
+        }
+
+        File dir = new File(tempDir);
+        if (!dir.exists()) {
+            boolean created = dir.mkdirs();
+            if (created) {
+                log.debug("创建临时目录: {}", tempDir);
+            } else {
+                log.warn("无法创建临时目录: {}", tempDir);
+            }
+        }
+    }
+
+    /**
+     * MultipartFile 转 File
+     * @param multipartFile 上传文件
+     * @param tempDir 临时目录
+     * @return File 对象
+     */
+    public static File multipartFileToFile(MultipartFile multipartFile, String tempDir) throws IOException {
+        if (multipartFile == null || multipartFile.isEmpty()) {
+            return null;
+        }
+
+        // 获取文件扩展名
+        String originalFilename = multipartFile.getOriginalFilename();
+        String extension = getFileExtension(originalFilename);
+
+        // 生成唯一文件名
+        String uniqueFilename = UUID.randomUUID().toString() + extension;
+        String filePath = tempDir + File.separator + uniqueFilename;
+
+        File file = new File(filePath);
+        multipartFile.transferTo(file);
+
+        log.debug("创建临时文件: {}", filePath);
+        return file;
+    }
+
+    /**
+     * 执行 OCR 识别
+     */
+    private static String performOcr(String imagePath) {
         try {
-            log.info("OCR 程序开始执行...");
-            // 1. 初始化引擎（使用 v4 模型）
-            log.info("正在初始化 OCR 引擎 (PP-OCRv4)...");
-            InferenceEngine engine = InferenceEngine.getInstance(Model.ONNX_PPOCR_V4);
-            // 2. 创建优化的参数配置
+            // 获取引擎实例
+            InferenceEngine engine = getEngine();
+
+            // 创建参数配置
             ParamConfig config = createOptimizedParamConfig();
-            // 4. 图像预处理（直接处理原图，不保存临时文件）
-            System.out.println("正在进行图像预处理...");
-            File file = multipartFileToFile(imageFile);
-            BufferedImage processedImage = preprocessImage(file);
-            // 5. 保存预处理后的图片到临时目录
-            if(!FileUtil.exist(sTmpPath)){
-                FileUtil.mkdir(sTmpPath);
-            }
-            processedImagePath = sTmpPath+"/processed_" + System.currentTimeMillis() + ".png";
-            ImageIO.write(processedImage, "png", new File(processedImagePath));
-            log.info("预处理图片已保存: " + processedImagePath);
-            // 6. 执行识别
-            log.info("开始识别图片...");
+
+            // 执行识别
             long startTime = System.currentTimeMillis();
-            OcrResult ocrResult = engine.runOcr(processedImagePath, config);
+            OcrResult ocrResult = engine.runOcr(imagePath, config);
             long endTime = System.currentTimeMillis();
-            // 7. 输出结果
-            String text = ocrResult.getStrRes().trim();
-            log.info("\n==================================");
-            log.info("识别结果：");
-            log.info(text);
-            log.info("==================================");
-            log.info("识别耗时: " + (endTime - startTime) + " ms");
-            // 8. 输出每个文本块
-//            if (ocrResult.getTextBlocks() != null && !ocrResult.getTextBlocks().isEmpty()) {
-//                System.out.println("\n文本块详情（共" + ocrResult.getTextBlocks().size() + "块）：");
-//                List<TextBlock> textBlocks = ocrResult.getTextBlocks();
-//                for (int i = 0; i < textBlocks.size(); i++) {
-//                    TextBlock block = textBlocks.get(i);
-//                    System.out.printf("  块%d: %s (置信度: %.2f)%n",
-//                            i + 1,
-//                            block.getText(),
-//                            block.getBoxScore()
-//                    );
-//                }
-//            }
-            return text;
+
+            log.info("OCR 识别耗时: {} ms", (endTime - startTime));
+
+            // 输出文本块详情（DEBUG 级别）
+            if (log.isDebugEnabled() && ocrResult.getTextBlocks() != null) {
+                List<TextBlock> textBlocks = ocrResult.getTextBlocks();
+                log.debug("识别到 {} 个文本块", textBlocks.size());
+                for (int i = 0; i < textBlocks.size(); i++) {
+                    TextBlock block = textBlocks.get(i);
+                    log.debug("  块{}: {} (置信度: {})",
+                            i + 1, block.getText(), block.getBoxScore());
+                }
+            }
+
+            return ocrResult.getStrRes().trim();
  
         } catch (Exception e) {
-            System.err.println("OCR 识别失败: " + e.getMessage());
-            e.printStackTrace();
-        }finally {
-            // 9. 清理临时文件
-            FileUtil.del(processedImagePath);
+            log.error("执行 OCR 识别失败: {}", e.getMessage(), e);
+            return StrUtil.EMPTY;
+        }
+    }
+
+    /**
+     * 保存预处理后的图片
+     */
+    private static String saveProcessedImage(BufferedImage image, String tempDir) throws IOException {
+        if (image == null) {
+            return null;
         }
-        return StrUtil.EMPTY;
+
+        String filename = "processed_" + System.currentTimeMillis() + "_" + UUID.randomUUID().toString() + ".png";
+        String filePath = tempDir + File.separator + filename;
+
+        File outputFile = new File(filePath);
+        ImageIO.write(image, "png", outputFile);
+
+        log.debug("保存预处理图片: {}", filePath);
+        return filePath;
     }
  
+    /**
+     * 清理临时文件
+     */
+    private static void cleanupTempFiles(File tempImageFile, String processedImagePath) {
+        // 清理原始临时文件
+        if (tempImageFile != null && tempImageFile.exists()) {
+            boolean deleted = tempImageFile.delete();
+            if (deleted) {
+                log.debug("删除临时文件: {}", tempImageFile.getPath());
+            } else {
+                log.warn("删除临时文件失败: {}", tempImageFile.getPath());
+                tempImageFile.deleteOnExit();
+            }
+        }
+
+        // 清理预处理图片
+        if (StrUtil.isNotBlank(processedImagePath)) {
+            File processedFile = new File(processedImagePath);
+            if (processedFile.exists()) {
+                boolean deleted = processedFile.delete();
+                if (deleted) {
+                    log.debug("删除预处理图片: {}", processedImagePath);
+                } else {
+                    log.warn("删除预处理图片失败: {}", processedImagePath);
+                    processedFile.deleteOnExit();
+                }
+            }
+        }
+    }
  
     /**
-     * 优化的参数配置
+     * 创建优化的参数配置
      */
     private static ParamConfig createOptimizedParamConfig() {
         ParamConfig config = new ParamConfig();
  
+        // 文本区域扩展
         config.setPadding(50);
+
+        // 最大边长限制（0 表示不限制）
         config.setMaxSideLen(0);
+
+        // 文本块置信度阈值
         config.setBoxScoreThresh(0.4f);
         config.setBoxThresh(0.25f);
+
+        // 文本区域扩展比例
         config.setUnClipRatio(1.8f);
+
+        // 角度检测
         config.setDoAngle(true);
         config.setMostAngle(true);
  
+        log.debug("OCR 参数配置: padding={}, unClipRatio={}",
+                config.getPadding(), config.getUnClipRatio());
+
         return config;
     }
  
     /**
-     * 图像预处理 - 直接返回处理后的 BufferedImage
+     * 图像预处理
      */
     private static BufferedImage preprocessImage(File imageFile) throws IOException {
         BufferedImage original = ImageIO.read(imageFile);
@@ -124,36 +279,21 @@ public class OcrUtil {
             throw new IOException("无法读取图片: " + imageFile.getPath());
         }
  
-        System.out.println("原始尺寸: " + original.getWidth() + "x" + original.getHeight());
+        log.debug("原始图片尺寸: {}x{}", original.getWidth(), original.getHeight());
  
         BufferedImage processed = original;
  
         // 1. 如果图片太大，缩小尺寸
         if (processed.getWidth() > 2000 || processed.getHeight() > 2000) {
             processed = resizeImage(processed, 1600, 1600);
+            log.debug("缩小图片尺寸: {}x{}", processed.getWidth(), processed.getHeight());
         }
  
         // 2. 增强对比度
         processed = enhanceContrast(processed);
  
-        System.out.println("处理后尺寸: " + processed.getWidth() + "x" + processed.getHeight());
-
         return processed;
     }
-    /***
-     * @Author 钱豹
-     * @Date 11:01 2026/4/1
-     * @Param [multipartFile]
-     * @return java.io.File
-     * @Description 图片对象转换
-     **/
-    public static File multipartFileToFile(MultipartFile multipartFile) throws IOException {
-        // 创建临时文件
-        File file = File.createTempFile("temp", null);
-        // 将 MultipartFile 的内容传输到 File
-        multipartFile.transferTo(file);
-        return file;
-    }
  
     /**
      * 调整图片大小
@@ -161,8 +301,12 @@ public class OcrUtil {
     private static BufferedImage resizeImage(BufferedImage image, int maxWidth, int maxHeight) {
         int w = image.getWidth();
         int h = image.getHeight();
+
+        // 计算缩放比例
         double ratio = Math.min((double) maxWidth / w, (double) maxHeight / h);
-        if (ratio >= 1) return image;
+        if (ratio >= 1.0) {
+            return image;
+        }
  
         int newW = (int) (w * ratio);
         int newH = (int) (h * ratio);
@@ -170,8 +314,10 @@ public class OcrUtil {
         BufferedImage resized = new BufferedImage(newW, newH, BufferedImage.TYPE_INT_RGB);
         Graphics2D g = resized.createGraphics();
         g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
+        g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
         g.drawImage(image, 0, 0, newW, newH, null);
         g.dispose();
+
         return resized;
     }
  
@@ -180,6 +326,7 @@ public class OcrUtil {
      */
     private static BufferedImage enhanceContrast(BufferedImage image) {
         BufferedImage result = new BufferedImage(image.getWidth(), image.getHeight(), image.getType());
+
         for (int y = 0; y < image.getHeight(); y++) {
             for (int x = 0; x < image.getWidth(); x++) {
                 Color c = new Color(image.getRGB(x, y));
@@ -189,21 +336,32 @@ public class OcrUtil {
                 result.setRGB(x, y, new Color(r, g, b).getRGB());
             }
         }
+
         return result;
     }
  
-    public static void main(String[] args) {
-        try {
-            System.out.println("OCR 程序开始执行...");
-
-            // 1. 初始化引擎（使用 v4 模型）
-            System.out.println("正在初始化 OCR 引擎 (PP-OCRv4)...");
-            InferenceEngine engine = InferenceEngine.getInstance(Model.ONNX_PPOCR_V4);
+    /**
+     * 获取文件扩展名
+     */
+    private static String getFileExtension(String filename) {
+        if (StrUtil.isBlank(filename)) {
+            return ".jpg";
+        }
+        int lastDotIndex = filename.lastIndexOf(".");
+        if (lastDotIndex == -1) {
+            return ".jpg";
+        }
+        return filename.substring(lastDotIndex);
+    }
  
-            // 2. 创建优化的参数配置
-            ParamConfig config = createOptimizedParamConfig();
+    /**
+     * 测试方法
+     */
+    public static void main(String[] args) {
+        String tempDir = "D:/temp/ocrJava";
  
-            // 3. 图片路径
+        // 测试识别
+        try {
             String imagePath = "E:/aa/b.jpg";
             File imageFile = new File(imagePath);
             if (!imageFile.exists()) {
@@ -211,48 +369,17 @@ public class OcrUtil {
                 return;
             }
  
-            // 4. 图像预处理（直接处理原图，不保存临时文件）
-            System.out.println("正在进行图像预处理...");
+            // 手动测试（实际使用中应该通过 MultipartFile）
             BufferedImage processedImage = preprocessImage(imageFile);
+            String processedPath = saveProcessedImage(processedImage, tempDir);
+            String result = performOcr(processedPath);
  
-            // 5. 保存预处理后的图片到临时目录
-            String processedImagePath = "D:/temp/ocrJava/processed_" + System.currentTimeMillis() + ".png";
-            ImageIO.write(processedImage, "png", new File(processedImagePath));
-            System.out.println("预处理图片已保存: " + processedImagePath);
-
-            // 6. 执行识别
-            System.out.println("开始识别图片...");
-            long startTime = System.currentTimeMillis();
-            OcrResult ocrResult = engine.runOcr(processedImagePath, config);
-            long endTime = System.currentTimeMillis();
-
-            // 7. 输出结果
-            String text = ocrResult.getStrRes().trim();
-            System.out.println("\n==================================");
-            System.out.println("识别结果：");
-            System.out.println(text);
-            System.out.println("==================================");
-            System.out.println("识别耗时: " + (endTime - startTime) + " ms");
-
-            // 8. 输出每个文本块
-            if (ocrResult.getTextBlocks() != null && !ocrResult.getTextBlocks().isEmpty()) {
-                System.out.println("\n文本块详情（共" + ocrResult.getTextBlocks().size() + "块）：");
-                List<TextBlock> textBlocks = ocrResult.getTextBlocks();
-                for (int i = 0; i < textBlocks.size(); i++) {
-                    TextBlock block = textBlocks.get(i);
-                    System.out.printf("  块%d: %s (置信度: %.2f)%n",
-                            i + 1,
-                            block.getText(),
-                            block.getBoxScore()
-                    );
-                }
-            }
+            System.out.println("识别结果: " + result);
  
-            // 9. 清理临时文件
-            new File(processedImagePath).delete();
+            // 清理
+            new File(processedPath).delete();
  
         } catch (Exception e) {
-            System.err.println("OCR 识别失败: " + e.getMessage());
             e.printStackTrace();
         }
     }
@@ -28,10 +28,10 @@ public class OcrController {
         return ResponseEntity.ok(dto);
     }
  
-    @PostMapping("/batch")
-    public ResponseEntity<List<String>> batchExtract(
-            @RequestParam("files") List<MultipartFile> files) {
-        List<String> results = ocrService.batchExtractText(files);
-        return ResponseEntity.ok(results);
-    }
+//    @PostMapping("/batch")
+//    public ResponseEntity<List<String>> batchExtract(
+//            @RequestParam("files") List<MultipartFile> files) {
+//        List<String> results = ocrService.batchExtractText(files);
+//        return ResponseEntity.ok(results);
+//    }
 }
 \ No newline at end of file