英文:
Font is not available to the JVM with Jasper Reports in Docker Container
问题
我正在尝试在Docker容器中使用DynamicJasper生成报表。
如果我遇到以下错误：
net.sf.jasperreports.engine.util.JRFontNotFoundException:字体'Arial'对JVM不可用。
我该如何解决这个问题？
英文:
I'm trying to generate a report with DynamicJasper in Docker container?
If I get the followfing error:
net.sf.jasperreports.engine.util.JRFontNotFoundException:Font 'Arial' is not available to the JVM.
How can I fix this?
答案1
得分: 3
我使用了类似下面的 Dockerfile，问题得以解决。
我尝试在容器中的文件系统中搜索字体，使用以下命令：
ls /usr/share/fonts/truetype/msttcorefonts/
我可以看到字体加载在这个文件夹中。
FROM openjdk:8u141-jreCOPY /build/libs/my-app*.jar /my-app.jarEXPOSE 9500RUN apt-get update && apt-get install -y vimRUN echo "deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty multiverse deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-updates multiverse deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse" | tee /etc/apt/sources.list.d/multiverse.listRUN echo ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true | debconf-set-selectionsRUN ["apt-get", "-y", "install", "ttf-mscorefonts-installer"]RUN dpkg-reconfigure ttf-mscorefonts-installerRUN apt-get install -y apt-transport-https apt-utilsRUN apt-get install --reinstall -y ttf-mscorefonts-installerCMD java -XX:+PrintFlagsFinal $JAVA_OPTS -jar /my-app.jar
英文:
I used a Dockerfile like the one below and the problem was solved.
I tried searching for the font in the filesystem in container, with:
ls /usr/share/fonts/truetype/msttcorefonts/
I can see the fonts loaded the folder.
FROM openjdk:8u141-jreCOPY /build/libs/my-app*.jar /my-app.jarEXPOSE 9500RUN apt-get update && apt-get install -y vimRUN echo "deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty multiverse deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-updates multiverse deb http://us-west-2.ec2.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse" | tee /etc/apt/sources.list.d/multiverse.listRUN echo ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true | debconf-set-selectionsRUN ["apt-get", "-y", "install", "ttf-mscorefonts-installer"]RUN dpkg-reconfigure ttf-mscorefonts-installerRUN apt-get install -y apt-transport-https apt-utilsRUN apt-get install --reinstall -y ttf-mscorefonts-installerCMD java -XX:+PrintFlagsFinal $JAVA_OPTS -jar /my-app.jar
答案2
得分: 2
以下是翻译好的内容：
实际上，JVM本身不包含任何字体。这就是为什么您需要自己安装它们。您的解决方案似乎已经很好。对于基于Debian的Docker镜像，我执行以下操作：
＃添加非自由存储库以获取微软字体RUN apt-get updateRUN apt-get install -y --no-install-recommends software-properties-commonRUN apt-add-repository contribRUN apt-get update＃如果您想在报告中使用Microsoft字体，必须安装字体＃Andale Mono、Arial Black、Arial、Comic Sans MS、Courier New、Georgia、Impact、＃Times New Roman、Trebuchet、Verdana、Webdings）RUN echo "ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true" | debconf-set-selectionsRUN apt-get install -y --no-install-recommends fontconfig ttf-mscorefonts-installerADD localfonts.conf /etc/fonts/local.confRUN fc-cache -f -v＃如果您想要使用特殊字符，比如汉字，您必须安装一个支持它们的字体＃例如：RUN apt install -y fonts-wqy-zenhei
localfonts.conf文件是为调整'msttcorefonts'集合的一些抗锯齿规则而优化的。您可以在此处找到它：https://wiki.ubuntu.com/Fonts#Manual_Font_Smoothing
不幸的是，文件长度太长，无法在SO上共享，但可以合理地假设我发布的链接将保存在Ubuntu维基上。
英文:
Essentially, the JVM itself does not hold any font. That's why you have to install them by yourself. Your solution seems already good. For Debian-based Docker images I do the following:
#Add non-free repositories to get MS fontsRUN apt-get updateRUN apt-get install -y --no-install-recommends software-properties-commonRUN apt-add-repository contribRUN apt-get update# If you want to use Microsoft fonts in reports, you must install the fonts# Andale Mono, Arial Black, Arial, Comic Sans MS, Courier New, Georgia, Impact,# Times New Roman, Trebuchet, Verdana,Webdings)RUN echo "ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true" | debconf-set-selectionsRUN apt-get install -y --no-install-recommends fontconfig ttf-mscorefonts-installerADD localfonts.conf /etc/fonts/local.confRUN fc-cache -f -v# If you want to use special characters, such as chinese ideograms, you must install afont that support them# For example:RUN apt install -y fonts-wqy-zenhei
The localfonts.conf file is an optimized for tweaking some anti-aliasing rules for the 'msttcorefonts' collection. Yo can find it here: https://wiki.ubuntu.com/Fonts#Manual_Font_Smoothing
Unfortunatly the file length is too file to share it on SO, but it's resonable to suppose that the link I posted will be kept on Ubuntu wiki.
答案3
得分: 0
这帮助我解决了关于我的基于Debian的Docker镜像的问题：
RUN apt-get -q update \&& apt-get -q install -y cabextract libmspack0 \&& wget http://ftp.de.debian.org/debian/pool/contrib/m/msttcorefonts/ttf-mscorefonts-installer_3.6_all.deb \&& dpkg -i ttf-mscorefonts-installer_3.6_all.deb
英文:
This helped me with my Debian-based Docker image
RUN apt-get -q update \&& apt-get -q install -y cabextract libmspack0 \&& wget http://ftp.de.debian.org/debian/pool/contrib/m/msttcorefonts/ttf-mscorefonts-installer_3.6_all.deb \&& dpkg -i ttf-mscorefonts-installer_3.6_all.deb
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