Exception in build with proguard

Question

I have a fat jar whcih include my package as well as all the dependencies. To obfuscate the jar ,I have addded proguard this is my gradle taks

def dependsDir = "${buildDir}/libs/dependencies/"
task proguard(type: proguard.gradle.ProGuardTask) {
  configuration 'proguard.conf'

  injars(layout.buildDirectory.file(inputJar))

  // As of Java 9, the runtime classes are packaged in modular jmod files.
  libraryjars "${System.getProperty('java.home')}/jmods/java.base.jmod", jarfilter: '!**.jar', filter: '!module-info.class'

  libraryjars "${dependsDir}"

  outjars(layout.buildDirectory.file(outputJar))
}

but when running i m getting exception

Unexpected error while preverifying: Class = [freemarker/ext/jsp/TagTransformModel] Method = [getWriter(Ljava/io/Writer;Ljava/util/Map;)Ljava/io/Writer;] Exception = [proguard.evaluation.IncompleteClassHierarchyException] (Can't find common super class of [freemarker.ext.jsp.JspWriterAdapter] (with 1 known super classes: freemarker.ext.jsp.JspWriterAdapter) and [java.io.Writer] (with 2 known super classes: java.io.Writer, java.lang.Object))

freemarker-2.3.32.jar is already present in my dependencies folder.

tell me how to fix this.

I have the same problem. Trying to fix it. I will let you know if i find the solution — Stepan Shcherbakov, Jun 30 '23 at 08:44
This helped to me: https://stackoverflow.com/a/58718671/12416141. Just add `dontoptimize` and `dontpreverify` options to proguard configuration. But now my main class does not work — Stepan Shcherbakov, Jun 30 '23 at 09:25

score 0 · Answer 1 · answered Jun 30 '23 at 09:48

0

I had the same problem. Just added dependency to my project on javax.servlet.jsp-api solved my problem.

answered Jun 30 '23 at 09:48

Stepan Shcherbakov

309
1
12

Exception in build with proguard

1 Answers1