no main manifest attribute

[ThanhDat2804]

when i run my obfuscated.jar it show error no main manifest attribute, in target\crud-spring-boot-thymeleaf-0.0.1-SNAPSHOT-obfuscated.jar here is my build

                    <configuration>
                        <target>
                            <taskdef name="yguard"
                                     classname="com.yworks.yguard.YGuardTask"
                                     classpathref="maven.plugin.classpath"/>

                            <yguard>
                                <inoutpair in="${project.build.directory}/${project.build.finalName}.jar"
                                           out="${project.build.directory}/${project.build.finalName}-obfuscated.jar"/>

                                <rename mainclass="com.crudapp.SpringBootCrudApplication"
                                        logfile="${project.build.directory}/renaming-log.xml">
                                    <keep>
                                        <!-- Main Spring Boot Application -->
                                        <class name="com.crudapp.SpringBootCrudApplication"/>

                                        <!-- Spring components and configurations -->
                                        <class name="com.crudapp.entity.*"/>
                                        <class name="com.crudapp.repository.*"/>
                                        <class name="com.crudapp.service.*"/>
                                        <class name="com.crudapp.service.impl.*"/>

                                        <!-- Keep Spring annotations -->
                                        <class name="org.springframework.**"/>
                                        <class name="jakarta.persistence.**"/>

                                        <!-- Optionally keep all classes in your package -->
                                        <class name="com.crudapp.**"/>
                                    </keep>
                                </rename>
                            </yguard>
                        </target>
                    </configuration>

[thomasbehr]

This is from your Maven POM, right? In this case, please see the processing example POM. All the steps in the example's antrun configuration are necessary to successfully obfuscate a Spring Boot application (see the inline comment right before the antrun configuration). You probably need to adjust your configuration accordingly.

[ThanhDat2804]

can i make yguard-rules.xml or something to manage rules obfuscate? I seem if i put all in POM it may be difficult to read

[thomasbehr]

Well, I am not a Maven expert, thus I cannot recommend any best practices.

What is possible, though, is to move the ANT target in your antrun configuration into a separate ANT build file and call that target from your Maven POM. E.g. suppose you create an ANT build file named obfuscate.xml that looks something like this:

<project name="...">
  <target name="obfuscate">
    ...
  </target>
  ...
</project>

You can call the obfuscate target from said ANT build file like so:

<configuration>
  <target>
    <ant
     antfile="./obfuscate.xml"
     dir="${basedir}"
     target="obfuscate">
      <property
       name="build.dir"
       value="${project.build.directory}"/>
      ...
    </ant>
  </target>
</configuration>

You probably need to pass more properties to the obfuscate target depending on what properties your inline target currently uses.
See the ANT manual for more information.