在Tomcat中设置环境变量TESSDATA_PREFIX [英] Setting environment variable TESSDATA_PREFIX in Tomcat

问题描述

我们正在使用名为Tess4J的Tesseract OCR Java库。如果作为独立应用程序运行，它可以正常工作。它需要一个名为TESSDATA_PREFIX的变量，它包含tessdata配置和其他charset相关文件。

We are using Tesseract OCR Java library called Tess4J. It works fine if run as a standalone application. It needs a variable called TESSDATA_PREFIX which contains the tessdata config and other charset related files.

在eclipse中，嵌入式Tomcat 6服务器运行良好。我使用启动配置将TESSDATA_PREFIX设置为环境变量。

It also runs fine with embedded Tomcat 6 server in eclipse. I had set TESSDATA_PREFIX as an environment variable by using the launch configuration.

但是当我将所有内容打包到WAR并将其放在tomcat的deploy目录中时，环境变量会似乎没有被选中，服务器遇到doOCR api（需要tessdata配置）时崩溃。

But when I package everything into a WAR and drop it in deploy directory of tomcat, the environment variable does not seem to be picked and the server crashes the moment it encounters the doOCR api( which needs the tessdata config).

我尝试在catalina.bat中设置这个env变量也是通过命令行，但没有运气。

I tried setting this env variable inside catalina.bat and also thru command line, but no luck.

推荐答案

Tomcat中的环境变量应放入setenv.bat / setenv.sh bin目录中的脚本。

Environment variables in Tomcat should be put into a setenv.bat/setenv.sh script in the bin directory.

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