How use langugetool in a servlet

1

Hi everyone, I tried use langugetool in a servlet, but show two error:

  1. Could not initialize class com.sun.jna.Native
    java.lang.NoClassDefFoundError: Could not initialize class com.sun.jna.Native
    at org.languagetool.rules.spelling.hunspell.Hunspell.(Hunspell.java:92)
    at org.languagetool.rules.spelling.hunspell.Hunspell.getInstance(Hunspell.java:68)
    at org.languagetool.rules.spelling.hunspell.Hunspell.getInstance(Hunspell.java:54)
    at org.languagetool.rules.spelling.hunspell.HunspellRule.init(HunspellRule.java:163)
    at org.languagetool.rules.spelling.SpellingCheckRule.resetIgnoreTokens(SpellingCheckRule.java:104)…

  2. java.lang.UnsupportedClassVersionError: org/languagetool/Language : Unsupported major.minor version 51.0
    java.lang.ClassLoader.defineClass1(Native Method)
    java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
    java.lang.ClassLoader.defineClass(ClassLoader.java:615)…

I want use languagetool in a servlet, How can do it?.

Best regards.

2

1.) It seems jna.jar is missing in your classpath for some reason.

2.) You will need Java 7. If you are still on Java 6 you can only use LanguageTool 2.2 or earlier.

3

Hi dnaber,

i have the same problem as state by 1. of Laotshi. I already tried putting the jna.jar and hunspell-native-libs.jar into the WEB-INF/lib and TOMCAT_HOME/lib directories but with no success.

Any idea why the class is not found (or could not be initialized)?

Cheers
Werzi2001

4

Hi Werzi2001, which version of LanguageTool, Java and Tomcat do you use? Which operating system?

5

Wow that was fast. And it immediately gave me the right hint. I was not using the Oracle JRE 7 but the OpenJDK one. I switched to the original one and now it is running.

Thanks for giving me the right questions :wink: