Tessj4 - Error opening data file ./tessdata/eng.traineddata
<p>I have this problem in my web application in Tomcat 9:</p>

<p><strong><em>Error opening data file ./tessdata/eng.traineddata
Please make sure the TESSDATAPREFIX environment variable is set to the parent directory of your "tessdata" directory.
Failed loading language 'eng'
Tesseract couldn't load any languages!</em></strong></p>

<p>I create folder C:\Tess4J from Tess4J 3.0.4 zip, with subfolders:</p>

<ul>
<li>dist

<ul>
<li>tess4j-3.0.jar</li>
</ul></li>
<li>lib

<ul>
<li><em>LIBS</em></li>
</ul></li>
<li>nbproject</li>
<li>src</li>
<li>tessdata

<ul>
<li><em>Downloaded ZIP with languages and extracted here</em></li>
</ul></li>
<li>test</li>
</ul>

<p>In catalina.properties i add:</p>

<ul>
<li>C:/Tess4J/dist/tess4j-3.0.jar,C:/Tess4J/lib</li>
</ul>

<p>In environments i try to add both, and doesn't work:</p>

<ul>
<li>TESSDATA_PREFIX --> C:/Tess4J</li>
<li>TESSDATA_PREFIX --> C:/Tess4J/tessdata</li>
</ul>

<p>Then i invoke my servlet whit doOCR method, and i've got error.</p>

<p>May you help me please?</p>