Obfuscating java class files with yGuard fails to resolve few external Jar files

Question

I have a Dynamic Web Project in Eclipse. After building the java source code, I wanted to obfuscate the class files using yGuard. The external Jar files have been put in the lib folder in the Tomcat directory and the build path is configured according to that path. I included that path as a external classes in the build.xml ANT file.

In the shrink log, I get warnings like mentioned below. Thinking that these are warnings, I proceed ahead, and replace the old class files with the new ones.

But when starting the server, the Web Project it doesn't work properly. Meaning that I am not able to login, or use the project in any other way.

I have tried Proguard as well but the same warnings persists there as well. Tried with -ignorewarnings as well but the same problem persists when replaced the original class files.

The build.xml file:

<project name="project" default="yguard" basedir=".">
    <target depends="jar" name="yguard">
      <taskdef name="yguard" classname="com.yworks.yguard.YGuardTask"
      classpath="libs/yguard.jar"/>
      <yguard>
        <inoutpair in="project.jar" out="project-obf.jar"/>

        <externalclasses>
          <pathelement location="C:/Program Files/Apache Software Foundation/Tomcat 7.0/lib/*.jar"/>
        </externalclasses>

        <shrink logfile="${shrinklog}">
        </shrink>
      </yguard>

    </target>

    <!-- compile -->
    <target name="compile" depends="init">
      <javac srcdir="${srcDir}" includes="com/technomedia/**/*.java"
        destdir="${classDir}">
      </javac>
    </target>

    <!-- create .jar -->
    <target name="jar" depends="compile">
      <jar jarfile="project.jar"
        basedir="build/classes"
        includes="com/technomedia/**">
      </jar>
    </target>
  </project>

The Waning messages that I get in shrink.xml file:

<!-- no entrypoints given - using class access public and protected on all inoutpairs. -->
<!-- parsing D:\TMSS\Project\Proguard\src\Proguard\ProGuard.jar -->
<!-- WARNING:Unresolved external dependency: javax.servlet.http.HttpServlet not found! -->
<!-- WARNING:Unresolved external dependency: org.apache.catalina.websocket.MessageInbound not found! -->
<!-- WARNING:Unresolved external dependency: javax.servlet.http.HttpServlet not found! -->
<!-- WARNING:Unresolved external dependency: org.apache.catalina.websocket.WebSocketServlet not found! -->
<!-- WARNING:Unresolved external dependency: javax.servlet.http.HttpServlet not found! -->
<!-- WARNING:Unresolved external dependency: javax.servlet.http.HttpServlet not found! -->

I expect that after replacing the class files in build/classes directory from project-obf.jar(after extracting) should work fine.

Obfuscating java class files with yGuard fails to resolve few external Jar files

0 Answers0