Has anyone used proguard to obfuscation of .war file and succeed? - proguard

Question

Has anyone used proguard to obfuscation of .war file and succeed? if yes then please tell me the exact steps to obfuscation of war.
I am not finding any ideal document on web for my requirement.
I have created my web application in spring boot and jsp.
<plugin>
<groupId>com.github.wvengen</groupId>
<artifactId>proguard-maven-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>proguard</goal>
</goals>
</execution>
</executions>
<configuration>
<proguardVersion>5.3.3</proguardVersion>
<injar>${project.build.finalName}.jar</injar>
<outjar>${project.build.finalName}.jar</outjar>
<obfuscate>true</obfuscate>
<options>
<option>-dontshrink</option>
<option>-dontoptimize</option>
<option>-adaptclassstrings</option>
<option>-keepattributes
Exceptions,InnerClasses,Signature,Deprecated,
SourceFile,LineNumberTable,*Annotation*,EnclosingMethod</option>
<option>-keepnames interface **</option>
<option>-keepparameternames</option>
<option>-keep class
!com.slm.proguard.example.spring.boot.domain.**
{ *; }</option>
<option>-keep class com.slm.proguard.example.spring.boot.service {
*; }</option>
<option>-keep interface * extends * { *; }</option>
<option>-keepclassmembers class * {
#org.springframework.beans.factory.annotation.Autowired *;
#org.springframework.beans.factory.annotation.Value *;
}
</option>
</options>
<libs>
Include main JAVA library required.
<lib>${java.home}/lib/rt.jar</lib>
Include crypto JAVA library if necessary.
<lib>${java.home}/lib/jce.jar</lib>
</libs>
</configuration>
<dependencies>
<dependency>
<groupId>net.sf.proguard</groupId>
<artifactId>proguard-base</artifactId>
<version>5.3.3</version>
</dependency>
</dependencies>
</plugin>

Answer 1

I had problems with a JAR created by proguard, it seemed ok but tomcat didn't find anything inside. After a long search I found that unzipping and re-zipping with an ant-task the exact same file make a working one.
Here is the added configuration:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.3</version>
<executions>
<execution>
<id>fixzip</id>
<phase>prepare-package</phase>
<goals>
<goal>run</goal>
</goals>
<configuration>
<tasks>
<!-- ******************** ********* ******************** -->
<!-- ******************** IMPORTANT ******************** -->
<!-- ******************** ********* ******************** -->
<!-- It may seems strange to unzip and re-jar the file -->
<!-- but the JAR made by Proguard is somehow not readable -->
<!-- by Tomcat and Spring beans aren't recognized -->
<!-- *************************************************** -->
<!-- Fixing JAR. -->
<move file="target/${project.build.finalName}/WEB-INF/lib/${project.artifactId}-${project.version}.jar"
tofile="target/${project.artifactId}-${project.version}_proguard_base.jar" />
<jar destfile="target/${project.build.finalName}/WEB-INF/lib/${project.artifactId}-${project.version}.jar">
<zipfileset
src="target/${project.artifactId}-${project.version}_proguard_base.jar"
includes="**/*.*" />
</jar>
</tasks>
</configuration>
</execution>
</executions>
</plugin>