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POIssue configuring Tesseract in Spring MVC (Maven)
 

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    <p>I'm facing some issues configuring Tesseract to work with Maven.</p> <p>I've imported a the related jar files via mvn install but am unsure what to do with the other 2 dll files. Mainly:</p> <ol> <li>liblept168.dll</li> <li><p>libtesseract302.dll</p> <pre><code>java.util.NoSuchElementException at javax.imageio.spi.FilterIterator.next(ServiceRegistry.java:825) at javax.imageio.ImageIO$ImageWriterIterator.next(ImageIO.java:842) at javax.imageio.ImageIO$ImageWriterIterator.next(ImageIO.java:827) at net.sourceforge.vietocr.ImageIOHelper.getImageByteBuffer(Unknown Source) at net.sourceforge.tess4j.Tesseract.doOCR(Unknown Source) at net.sourceforge.tess4j.Tesseract.doOCR(Unknown Source) at net.sourceforge.tess4j.Tesseract.doOCR(Unknown Source) at com.app.ocr.OCR.getResult(OCR.java:21) </code></pre></li> </ol> <p>My pom.xml:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"&gt; &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt; &lt;groupId&gt;com.formula&lt;/groupId&gt; &lt;artifactId&gt;app&lt;/artifactId&gt; &lt;name&gt;Formula_0.1&lt;/name&gt; &lt;packaging&gt;war&lt;/packaging&gt; &lt;version&gt;1.0.0-BUILD-SNAPSHOT&lt;/version&gt; &lt;properties&gt; &lt;java-version&gt;1.6&lt;/java-version&gt; &lt;org.springframework-version&gt;3.1.1.RELEASE&lt;/org.springframework-version&gt; &lt;org.aspectj-version&gt;1.6.10&lt;/org.aspectj-version&gt; &lt;org.slf4j-version&gt;1.6.6&lt;/org.slf4j-version&gt; &lt;hibernate.version&gt;4.2.0.Final&lt;/hibernate.version&gt; &lt;/properties&gt; &lt;dependencies&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework&lt;/groupId&gt; &lt;artifactId&gt;spring-context&lt;/artifactId&gt; &lt;version&gt;${org.springframework-version}&lt;/version&gt; &lt;exclusions&gt; &lt;!-- Exclude Commons Logging in favor of SLF4j --&gt; &lt;exclusion&gt; &lt;groupId&gt;commons-logging&lt;/groupId&gt; &lt;artifactId&gt;commons-logging&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;/exclusions&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework&lt;/groupId&gt; &lt;artifactId&gt;spring-webmvc&lt;/artifactId&gt; &lt;version&gt;${org.springframework-version}&lt;/version&gt; &lt;/dependency&gt; &lt;!-- AspectJ --&gt; &lt;dependency&gt; &lt;groupId&gt;org.aspectj&lt;/groupId&gt; &lt;artifactId&gt;aspectjrt&lt;/artifactId&gt; &lt;version&gt;${org.aspectj-version}&lt;/version&gt; &lt;/dependency&gt; &lt;!-- Logging --&gt; &lt;dependency&gt; &lt;groupId&gt;org.slf4j&lt;/groupId&gt; &lt;artifactId&gt;slf4j-api&lt;/artifactId&gt; &lt;version&gt;${org.slf4j-version}&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.slf4j&lt;/groupId&gt; &lt;artifactId&gt;jcl-over-slf4j&lt;/artifactId&gt; &lt;version&gt;${org.slf4j-version}&lt;/version&gt; &lt;scope&gt;runtime&lt;/scope&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.slf4j&lt;/groupId&gt; &lt;artifactId&gt;slf4j-log4j12&lt;/artifactId&gt; &lt;version&gt;${org.slf4j-version}&lt;/version&gt; &lt;scope&gt;runtime&lt;/scope&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;log4j&lt;/groupId&gt; &lt;artifactId&gt;log4j&lt;/artifactId&gt; &lt;version&gt;1.2.15&lt;/version&gt; &lt;exclusions&gt; &lt;exclusion&gt; &lt;groupId&gt;javax.mail&lt;/groupId&gt; &lt;artifactId&gt;mail&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;exclusion&gt; &lt;groupId&gt;javax.jms&lt;/groupId&gt; &lt;artifactId&gt;jms&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;exclusion&gt; &lt;groupId&gt;com.sun.jdmk&lt;/groupId&gt; &lt;artifactId&gt;jmxtools&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;exclusion&gt; &lt;groupId&gt;com.sun.jmx&lt;/groupId&gt; &lt;artifactId&gt;jmxri&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;/exclusions&gt; &lt;scope&gt;runtime&lt;/scope&gt; &lt;/dependency&gt; &lt;!-- @Inject --&gt; &lt;dependency&gt; &lt;groupId&gt;javax.inject&lt;/groupId&gt; &lt;artifactId&gt;javax.inject&lt;/artifactId&gt; &lt;version&gt;1&lt;/version&gt; &lt;/dependency&gt; &lt;!-- Servlet --&gt; &lt;dependency&gt; &lt;groupId&gt;javax.servlet&lt;/groupId&gt; &lt;artifactId&gt;servlet-api&lt;/artifactId&gt; &lt;version&gt;2.5&lt;/version&gt; &lt;scope&gt;provided&lt;/scope&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;javax.servlet.jsp&lt;/groupId&gt; &lt;artifactId&gt;jsp-api&lt;/artifactId&gt; &lt;version&gt;2.1&lt;/version&gt; &lt;scope&gt;provided&lt;/scope&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;javax.servlet&lt;/groupId&gt; &lt;artifactId&gt;jstl&lt;/artifactId&gt; &lt;version&gt;1.2&lt;/version&gt; &lt;/dependency&gt; &lt;!-- Test --&gt; &lt;dependency&gt; &lt;groupId&gt;junit&lt;/groupId&gt; &lt;artifactId&gt;junit&lt;/artifactId&gt; &lt;version&gt;4.7&lt;/version&gt; &lt;scope&gt;test&lt;/scope&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.codehaus.jackson&lt;/groupId&gt; &lt;artifactId&gt;jackson-mapper-asl&lt;/artifactId&gt; &lt;version&gt;1.9.12&lt;/version&gt; &lt;/dependency&gt; &lt;!-- MYSQL --&gt; &lt;dependency&gt; &lt;groupId&gt;mysql&lt;/groupId&gt; &lt;artifactId&gt;mysql-connector-java&lt;/artifactId&gt; &lt;version&gt;5.1.6&lt;/version&gt; &lt;/dependency&gt; &lt;!-- Apache Commons Upload --&gt; &lt;dependency&gt; &lt;groupId&gt;commons-fileupload&lt;/groupId&gt; &lt;artifactId&gt;commons-fileupload&lt;/artifactId&gt; &lt;version&gt;1.2.2&lt;/version&gt; &lt;/dependency&gt; &lt;!-- Apache Commons Upload --&gt; &lt;dependency&gt; &lt;groupId&gt;commons-io&lt;/groupId&gt; &lt;artifactId&gt;commons-io&lt;/artifactId&gt; &lt;version&gt;1.3.2&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.jasypt&lt;/groupId&gt; &lt;artifactId&gt;jasypt&lt;/artifactId&gt; &lt;version&gt;1.9.0&lt;/version&gt; &lt;scope&gt;compile&lt;/scope&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.hibernate&lt;/groupId&gt; &lt;artifactId&gt;hibernate-core&lt;/artifactId&gt; &lt;version&gt;${hibernate.version}&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.hibernate&lt;/groupId&gt; &lt;artifactId&gt;hibernate-entitymanager&lt;/artifactId&gt; &lt;version&gt;${hibernate.version}&lt;/version&gt; &lt;/dependency&gt; &lt;!-- Spring Security --&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework.security&lt;/groupId&gt; &lt;artifactId&gt;spring-security-core&lt;/artifactId&gt; &lt;version&gt;${org.springframework-version}&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework.security&lt;/groupId&gt; &lt;artifactId&gt;spring-security-web&lt;/artifactId&gt; &lt;version&gt;${org.springframework-version}&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework.security&lt;/groupId&gt; &lt;artifactId&gt;spring-security-config&lt;/artifactId&gt; &lt;version&gt;${org.springframework-version}&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.springframework&lt;/groupId&gt; &lt;artifactId&gt;spring-jdbc&lt;/artifactId&gt; &lt;version&gt;${org.springframework-version}&lt;/version&gt; &lt;/dependency&gt; &lt;!-- OCR --&gt; &lt;dependency&gt; &lt;groupId&gt;com.google.code&lt;/groupId&gt; &lt;artifactId&gt;tess4j&lt;/artifactId&gt; &lt;version&gt;1&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;net.java.dev.jai-imageio&lt;/groupId&gt; &lt;artifactId&gt;jai-imageio-core-standalone&lt;/artifactId&gt; &lt;version&gt;1.2-pre-dr-b04-2013-04-23&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;javax.media.jai&lt;/groupId&gt; &lt;artifactId&gt;com.springsource.javax.media.jai.core&lt;/artifactId&gt; &lt;version&gt;1.1.3&lt;/version&gt; &lt;/dependency&gt; &lt;!-- dependency&gt; &lt;groupId&gt;com.sun.jna&lt;/groupId&gt; &lt;artifactId&gt;jna&lt;/artifactId&gt; &lt;version&gt;3.0.9&lt;/version&gt; &lt;/dependency --&gt; &lt;dependency&gt; &lt;groupId&gt;net.java.dev.jna&lt;/groupId&gt; &lt;artifactId&gt;jna&lt;/artifactId&gt; &lt;version&gt;3.3.0&lt;/version&gt; &lt;/dependency&gt; &lt;/dependencies&gt; &lt;build&gt; &lt;defaultGoal&gt;install&lt;/defaultGoal&gt; &lt;plugins&gt; &lt;plugin&gt; &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt; &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt; &lt;version&gt;2.3.2&lt;/version&gt; &lt;configuration&gt; &lt;source&gt;1.6&lt;/source&gt; &lt;target&gt;1.6&lt;/target&gt; &lt;/configuration&gt; &lt;/plugin&gt; &lt;!-- allows the route to be ran via 'mvn camel:run' --&gt; &lt;plugin&gt; &lt;groupId&gt;org.apache.camel&lt;/groupId&gt; &lt;artifactId&gt;camel-maven-plugin&lt;/artifactId&gt; &lt;version&gt;2.9.2&lt;/version&gt; &lt;/plugin&gt; &lt;/plugins&gt; &lt;/build&gt; &lt;repositories&gt; &lt;repository&gt; &lt;id&gt;JBoss&lt;/id&gt; &lt;name&gt;Maven JBoss Nexus&lt;/name&gt; &lt;layout&gt;default&lt;/layout&gt; &lt;url&gt;http://repository.jboss.org/nexus/content/groups/public-jboss/&lt;/url&gt; &lt;snapshots&gt; &lt;enabled&gt;false&lt;/enabled&gt; &lt;/snapshots&gt; &lt;/repository&gt; &lt;repository&gt; &lt;id&gt;maven2&lt;/id&gt; &lt;name&gt;Maven central&lt;/name&gt; &lt;layout&gt;default&lt;/layout&gt; &lt;url&gt;http://repo1.maven.org/maven2/&lt;/url&gt; &lt;snapshots&gt; &lt;enabled&gt;false&lt;/enabled&gt; &lt;/snapshots&gt; &lt;/repository&gt; &lt;repository&gt; &lt;id&gt;com.springsource.repository.bundles.external&lt;/id&gt; &lt;name&gt;SpringSource Enterprise Bundle Repository - External Bundle Releases&lt;/name&gt; &lt;url&gt;http://repository.springsource.com/maven/bundles/external&lt;/url&gt; &lt;/repository&gt; &lt;/repositories&gt; </code></pre> <p></p> <p>The is my folder structure: <img src="https://i.stack.imgur.com/Ar7Qp.png" alt="enter image description here"></p> <p>The strange thing it is that it works when i run it as a java application but does not when i try to use it in a servlet.</p> <p>Anyone one has any experience configuring this to work with maven?</p> <p><strong>UPDATE:</strong></p> <p>I added one line into my code which gave a more specific error. </p> <pre><code>ImageIO.scanForPlugins();//before String result = instance.doOCR(imageFile); </code></pre> <p>Error:</p> <pre><code> java.lang.UnsatisfiedLinkError: Unable to load library 'libtesseract302': The specified module could not be found. at com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java:166) at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:239) at com.sun.jna.Library$Handler.&lt;init&gt;(Library.java:140) at com.sun.jna.Native.loadLibrary(Native.java:393) at com.sun.jna.Native.loadLibrary(Native.java:378) at net.sourceforge.tess4j.TessAPI.&lt;clinit&gt;(Unknown Source) at net.sourceforge.tess4j.Tesseract.doOCR(Unknown Source) at net.sourceforge.tess4j.Tesseract.doOCR(Unknown Source) at net.sourceforge.tess4j.Tesseract.doOCR(Unknown Source) at net.sourceforge.tess4j.Tesseract.doOCR(Unknown Source) at com.formula.ocr.OCR.getResult(OCR.java:24) </code></pre>
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