Question 271508 in Docker Question posted in
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Need help regarding an error in the Dockerized version of the application

I am currently working on an application that uses a Spring Boot-based backend based on Java 17. I use Maven as the build tool. The front end is a ReactJS-based application.

In my developer environment, I use Oracle JDK java 17.0.4. When I build and execute the report functionality of this application it works as expected.

But when the same functionality is checked in a dockerized environment for one Excel report download scenario fails with an error. The back-end log indicates some errors briefly mentioned below.

The error message encountered is a Java UnsatisfiedLinkError related to the libfontmanager.so library and its dependency libfreetype.so.6. This error seems to occur when Java is unable to load a required native library (libfreetype.so.6) that is necessary for the functioning of the Java font system.

How can I resolve this issue on Docker environments? Are any changes required for the docker file or Java version used?

Related docker File

# === Stage 1: Build the Spring Boot app ===
FROM maven:3.6.3-openjdk-17 AS build
WORKDIR /app
COPY pom.xml .
COPY src/ /app/src/
RUN mvn package -DskipTests
# === Stage 2: Create the final Docker image ===
FROM openjdk:17-alpine
WORKDIR /app
COPY --from=build /app/target/backend-0.0.1-SNAPSHOT.jar app.jar
# Set environment variables for MySQL configuration
ENV MYSQL_HOST=localhost
ENV MYSQL_PORT=****** //Omitted
ENV MYSQL_DATABASE=db
ENV MYSQL_USERNAME=****** //Omitted
ENV MYSQL_PASSWORD=************ //Omitted
EXPOSE 8080
CMD ["java", "-jar", "app.jar"]

Brief set error messages are listed below.

2023-10-05T07:19:23.875Z ERROR 1 — [nio-8080-exec-8] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Handler dispatch failed: java.lang.UnsatisfiedLinkError: /opt/openjdk-17/lib/libfontmanager.so: Error loading shared library libfreetype.so.6: No such file or directory (needed by /opt/openjdk-17/lib/libfontmanager.so)] with root cause

java.lang.UnsatisfiedLinkError: /opt/openjdk-17/lib/libfontmanager.so: Error loading shared library libfreetype.so.6: No such file or directory (needed by /opt/openjdk-17/lib/libfontmanager.so)

at java.base/jdk.internal.loader.NativeLibraries.load(Native Method) ~[na:na]
at java.base/jdk.internal.loader.NativeLibraries$NativeLibraryImpl.open(NativeLibraries.java:383) ~[na:na]
at java.base/jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:227) ~[na:na]
at java.base/jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:169) ~[na:na]
at java.base/jdk.internal.loader.NativeLibraries.findFromPaths(NativeLibraries.java:310) ~[na:na]
at java.base/jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:280) ~[na:na]
at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2392) ~[na:na]
at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:808) ~[na:na]
at java.base/java.lang.System.loadLibrary(System.java:1893) ~[na:na]
at java.desktop/sun.font.FontManagerNativeLibrary$1.run(FontManagerNativeLibrary.java:57) ~[na:na]
at java.base/java.security.AccessController.doPrivileged(AccessController.java:312) ~[na:na]
at java.desktop/sun.font.FontManagerNativeLibrary.<clinit>(FontManagerNativeLibrary.java:32) ~[na:na]
at java.desktop/sun.font.SunFontManager$1.run(SunFontManager.java:270) ~[na:na]
at java.desktop/sun.font.SunFontManager$1.run(SunFontManager.java:268) ~[na:na]
at java.base/java.security.AccessController.doPrivileged(AccessController.java:312) ~[na:na]
at java.desktop/sun.font.SunFontManager.<clinit>(SunFontManager.java:268) ~[na:na]
at java.base/java.lang.Class.forName0(Native Method) ~[na:na]
at java.base/java.lang.Class.forName(Class.java:466) ~[na:na]
at java.desktop/sun.font.FontManagerFactory$1.run(FontManagerFactory.java:82) ~[na:na]
at java.base/java.security.AccessController.doPrivileged(AccessController.java:312) ~[na:na]
at java.desktop/sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:74) ~[na:na]
at java.desktop/java.awt.Font.getFont2D(Font.java:526) ~[na:na]
at java.desktop/java.awt.Font.canDisplayUpTo(Font.java:2279) ~[na:na]
at java.desktop/java.awt.font.TextLayout.singleFont(TextLayout.java:469) ~[na:na]
at java.desktop/java.awt.font.TextLayout.<init>(TextLayout.java:530) ~[na:na]
at org.apache.poi.ss.util.SheetUtil.getDefaultCharWidth(SheetUtil.java:285) ~[poi-5.0.0.jar!/:5.0.0]
at org.apache.poi.ss.util.SheetUtil.getColumnWidth(SheetUtil.java:259) ~[poi-5.0.0.jar!/:5.0.0]
at org.apache.poi.ss.util.SheetUtil.getColumnWidth(SheetUtil.java:244) ~[poi-5.0.0.jar!/:5.0.0]
at org.apache.poi.xssf.usermodel.XSSFSheet.autoSizeColumn(XSSFSheet.java:523) ~[poi-ooxml-5.0.0.jar!/:5.0.0]
at org.apache.poi.xssf.usermodel.XSSFSheet.autoSizeColumn(XSSFSheet.java:505) ~[poi-ooxml-5.0.0.jar!/:5.0.0]
at com.antarctica21.backend.forecasting.service.PlanService.saveWOSRZipExcelFile(PlanService.java:3352) ~[classes!/:0.0.1-SNAPSHOT]
at com.antarctica21.backend.forecasting.service.PlanService.getWeekOversSalesExcelDetails(PlanService.java:3244) ~[classes!/:0.0.1-SNAPSHOT]

java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11FontManager

at java.base/java.lang.Class.forName0(Native Method) ~[na:na]
at java.base/java.lang.Class.forName(Class.java:466) ~[na:na]
at java.desktop/sun.font.FontManagerFactory$1.run(FontManagerFactory.java:82) ~[na:na]
at java.base/java.security.AccessController.doPrivileged(AccessController.java:312) ~[na:na]
at java.desktop/sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:74) ~[na:na]
at java.desktop/java.awt.Font.getFont2D(Font.java:526) ~[na:na]
at java.desktop/java.awt.Font.canDisplayUpTo(Font.java:2279) ~[na:na]
at java.desktop/java.awt.font.TextLayout.singleFont(TextLayout.java:469) ~[na:na]
at java.desktop/java.awt.font.TextLayout.<init>(TextLayout.java:530) ~[na:na]
at org.apache.poi.ss.util.SheetUtil.getDefaultCharWidth(SheetUtil.java:285) ~[poi-5.0.0.jar!/:5.0.0]
at org.apache.poi.ss.util.SheetUtil.getColumnWidth(SheetUtil.java:259) ~[poi-5.0.0.jar!/:5.0.0]
at org.apache.poi.ss.util.SheetUtil.getColumnWidth(SheetUtil.java:244) ~[poi-5.0.0.jar!/:5.0.0]
at org.apache.poi.xssf.usermodel.XSSFSheet.autoSizeColumn(XSSFSheet.java:523) ~[poi-ooxml-5.0.0.jar!/:5.0.0]
at org.apache.poi.xssf.usermodel.XSSFSheet.autoSizeColumn(XSSFSheet.java:505) ~[poi-ooxml-5.0.0.jar!/:5.0.0]
at com.antarctica21.backend.forecasting.service.PlanService.saveWOSRZipExcelFile(PlanService.java:3352) ~[classes!/:0.0.1-SNAPSHOT]
at com.antarctica21.backend.forecasting.service.PlanService.getWeekOversSalesExcelDetails(PlanService.java:3244) ~[classes!/:0.0.1-SNAPSHOT]
at com.antarctica21.backend.forecasting.service.PlanService.getWeekOversSalesExcelDetilsByCriteria(PlanService.java:541) ~[classes!/:0.0.1-SNAPSHOT]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na]
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343) ~[spring-aop-6.0.7.jar!/:6.0.7]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:698) ~[spring-aop-6.0.7.jar!/:6.0.7]
at com.antarctica21.backend.forecasting.service.PlanService$$SpringCGLIB$$0.getWeekOversSalesExcelDetilsByCriteria(<generated>) ~[classes!/:0.0.1-SNAPSHOT]
at com.antarctica21.backend.forecasting.controller.PlanController.getWeekOversSalesExcelDetilsByCriteria(PlanController.java:190) ~[classes!/:0.0.1-SNAPSHOT]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na]
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2

Answers


  1. 0

    Based on searching your error, you need to install a font package into the container.

    Since Docker isn’t a Desktop environment, the JDK doesn’t need this for GUI related applications, such as handling Excel files and fonts within them

    For example, on Debian/Ubuntu image

    RUN apt-get update -y 
  && apt-get install -y libfontconfig1

    Or on Alpine

    RUN apk add --no-cache fontconfig

    Also, the POI version you’re using is 2+ years old, before Java 17 was released. Maybe upgrade and there’s a fix available by now

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  2. 0

    According to this page, to install libfreetype.so.6 in Alpine you need the freetype package:

    RUN apk add --no-cache freetype

    I would also change the base image: openjdk:17-alpine belongs to the openjdk repository that is deprecated, furthermore your Dockerfile suggests that a JRE image is enough for you. You can use eclipse-temurin:17-jre-alpine or the smaller but unofficial pnavato/amazoncorretto-jre:17-alpine.

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