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Tess4j Issue in Windows: java.lang.UnsatisfiedLinkError: The specified module could not be found in instance.doOCR(imageFile)

After 2 days of googling I am still unable to find the solution of my issue with Tess4j version 3.0: java.lang.UnsatisfiedLinkError: The specified module could not be found.

I write server side Spring boot app on my Windows 10 x64. I used this tutorial http://tess4j.sourceforge.net/tutorial/ I make ant test in tess4j project's source and this command works ok in my PC. I also have Visual C++ Redistributable for VS2012 and Visual C++ Redistributable for VS2013 installed. But I have missed dlls in my PC, libtesseract304.dll depends on:

Can it be the reason of problem? But how it is possible, that Tess4J-3.0-src project works ok in my PC?

My full stack trace:

java.lang.UnsatisfiedLinkError: The specified module could not be found.

    at com.sun.jna.Native.open(Native Method) ~[jna.jar:4.2.1 (b0)]
    at com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java:263) ~[jna.jar:4.2.1 (b0)]
    at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:403) ~[jna.jar:4.2.1 (b0)]
    at com.sun.jna.Library$Handler.<init>(Library.java:147) ~[jna.jar:4.2.1 (b0)]
    at com.sun.jna.Native.loadLibrary(Native.java:502) ~[jna.jar:4.2.1 (b0)]
    at com.sun.jna.Native.loadLibrary(Native.java:481) ~[jna.jar:4.2.1 (b0)]
    at net.sourceforge.tess4j.util.LoadLibs.getTessAPIInstance(Unknown Source) ~[tess4j-3.0.jar:na]
    at net.sourceforge.tess4j.TessAPI.<clinit>(Unknown Source) ~[tess4j-3.0.jar:na]
    at net.sourceforge.tess4j.Tesseract.init(Unknown Source) ~[tess4j-3.0.jar:na]
    at net.sourceforge.tess4j.Tesseract.doOCR(Unknown Source) ~[tess4j-3.0.jar:na]
    at net.sourceforge.tess4j.Tesseract.doOCR(Unknown Source) ~[tess4j-3.0.jar:na]
    at net.sourceforge.tess4j.Tesseract.doOCR(Unknown Source) ~[tess4j-3.0.jar:na]
    at ocr.OCRController.handleFileUpload(OCRController.java:109) ~[classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_51]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_51]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_51]
    at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_51]

My code:

ITesseract instance = new Tesseract(); // JNA Interface Mapping

instance.setDatapath(new File(datapath).getPath()); 
instance.setLanguage("eng");      
try {
    String result = instance.doOCR(imageFile); //error here
} catch (TesseractException e) {
    System.err.println(e.getMessage());
}

maven:

<dependency>
    <groupId>jai_imageio</groupId>
    <artifactId>com.jai_imageio</artifactId>
    <version>3.0</version>
    <scope>system</scope>
    <systemPath>${project.basedir}/lib/jai_imageio.jar</systemPath>
</dependency>
<dependency>
    <groupId>commons-io-2.4</groupId>
    <artifactId>com.commons-io-2.4</artifactId>
    <version>3.0</version>
    <scope>system</scope>
    <systemPath>${project.basedir}/lib/commons-io-2.4.jar</systemPath>
</dependency>
<dependency>
    <groupId>jna</groupId>
    <artifactId>com.jna</artifactId>
    <version>3.0</version>
    <scope>system</scope>
    <systemPath>${project.basedir}/lib/jna.jar</systemPath>
</dependency>
<dependency>
    <groupId>tess4j-3.0</groupId>
    <artifactId>com.tess4j-3.0</artifactId>
    <version>3.0</version>
    <scope>system</scope>
    <systemPath>${project.basedir}/lib/tess4j-3.0.jar</systemPath>
</dependency>

I also tried to load libs in force way:

Runtime.getRuntime().loadLibrary("lib/win32-x86-64/gsdll64");
Runtime.getRuntime().loadLibrary("lib/win32-x86-64/libtesseract304");

But without success:

There was an unexpected error (type=Internal Server Error, status=500).
C:\Users\Iuliia\IdeaProjects\ENumbersBackend\lib\win32-x86-64\libtesseract304.dll: Can't find dependent libraries

Thank you for any help!

Solution

  • The problem is not connected with Windows 10.

    I've already fix the error with adding

    <dependency>
    <groupId>net.sourceforge.tess4j</groupId>
    <artifactId>tess4j</artifactId>
    <version>3.0.0</version>
</dependency>

    instead all previous maven dependencies.