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Byteeco Tesseract API在Docker内部不工作

bytedeco-javacv tesseract docker java

Anonymous Creator · 技术社区 · 5 月前

import org.bytedeco.tesseract.TessBaseAPI;

public class TesseractInitExample {
    public static void main(String[] args) {
        // Create a new Tesseract API instance
        TessBaseAPI api = new TessBaseAPI();

        // Set the path to tessdata and language (change accordingly)
        String dataPath = "/root/GitHub/tessdata_best"; 
        String language = "eng";

        // Initialize Tesseract
        if (api.Init(dataPath, language) != 0) {
            System.err.println("Could not initialize Tesseract.");
            return;
        }

        System.out.println("Tesseract initialized successfully!");

        // Cleanup
        api.End();
    }
}

下面是Docker文件

FROM gradle:8.11.1-jdk17-alpine AS build

RUN apk add --no-cache git
RUN git clone --branch main --single-branch https://github.com/tesseract-ocr/tessdata_best.git /root/GitHub/tessdata_best

COPY --chown=gradle:gradle . /home/gradle/src
WORKDIR /home/gradle/src
RUN gradle build --no-daemon -x test 

FROM eclipse-temurin:17.0.13_11-jdk-alpine

COPY --from=build /root/GitHub/tessdata_best /root/GitHub/tessdata_best

RUN apk add --no-cache \
    tesseract-ocr \
    leptonica-dev

VOLUME /tmp
ARG JAVA_OPTS
ENV JAVA_OPTS=$JAVA_OPTS

RUN mkdir /app
COPY --from=build /home/gradle/src/build/libs/*.jar /app/extract.jar
ENTRYPOINT ["java", "-XX:+UnlockExperimentalVMOptions", "-Djava.security.egd=file:/dev/./urandom","-jar","/app/extract.jar"]

在运行容器时,我遇到了以下错误 init .

3.362 seconds (process running for 4.095)
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x000000000005f2b0, pid=1, tid=7
#
# JRE version: OpenJDK Runtime Environment Temurin-17.0.13+11 (17.0.13+11) (build 17.0.13+11)
# Java VM: OpenJDK 64-Bit Server VM Temurin-17.0.13+11 (17.0.13+11, mixed mode, sharing, tiered, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# C  [libtesseract.so.5.5+0x14b9c8]  tesseract::CHAR_FRAGMENT::parse_from_string(char const*)+0xc8
#
# Core dump will be written. Default location: Core dumps may be processed with "/wsl-capture-crash %t %E %p %s" (or dumping to //core.1)
#
# An error report file with more information is saved as:
# //hs_err_pid1.log
#
# If you would like to submit a bug report, please visit:
#   https://github.com/adoptium/adoptium-support/issues
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

无法计算此错误。我该如何解决这个问题(在windows本地运行良好)?

1 回复 | 直到 5 月前

Sibin Muhammed A R 5 月前

您遇到的问题可能是由于基于Alpine的图像和本机Tesseract库之间的兼容性问题。Alpine使用musl而不是glibc,这有时会导致在使用libtesseract.so等原生库时出现分割错误或其他意外行为。切换到基于Debian或Ubuntu的映像通常可以解决这些问题。

这是一个使用基于Debian的镜像以获得更好兼容性的Dockerfile:

FROM gradle:8.11.1-jdk17 AS build

# Install git and clone tessdata_best
RUN apt-get update && apt-get install -y git
RUN git clone --branch main --single-branch https://github.com/tesseract-ocr/tessdata_best.git /root/GitHub/tessdata_best

# Build the project with Gradle
COPY --chown=gradle:gradle . /home/gradle/src
WORKDIR /home/gradle/src
RUN gradle build --no-daemon -x test 

FROM eclipse-temurin:17.0.13_11-jdk

# Install Tesseract and dependencies
RUN apt-get update && apt-get install -y \
    tesseract-ocr \
    libleptonica-dev

# Copy tessdata_best
COPY --from=build /root/GitHub/tessdata_best /root/GitHub/tessdata_best

# Prepare the application
VOLUME /tmp
ARG JAVA_OPTS
ENV JAVA_OPTS=$JAVA_OPTS
RUN mkdir /app
COPY --from=build /home/gradle/src/build/libs/*.jar /app/extract.jar

# Run the application
ENTRYPOINT ["java", "-XX:+UnlockExperimentalVMOptions", "-Djava.security.egd=file:/dev/./urandom","-jar","/app/extract.jar"]