Maven shade jar throw exception

Question

I have the following Exception:

Exception in thread "main" java.lang.SecurityException: no manifiest section for signature file entry javax/security/cert/CertificateException.class at sun.security.util.SignatureFileVerifier.verifySection(SignatureFileVerifier.java:380) at sun.security.util.SignatureFileVerifier.processImpl(SignatureFileVerifier.java:231) at sun.security.util.SignatureFileVerifier.process(SignatureFileVerifier.java:176) at java.util.jar.JarVerifier.processEntry(JarVerifier.java:288) at java.util.jar.JarVerifier.update(JarVerifier.java:199) at java.util.jar.JarFile.initializeVerifier(JarFile.java:323) at java.util.jar.JarFile.getInputStream(JarFile.java:388) at sun.misc.URLClassPath$JarLoader$2.getInputStream(URLClassPath.java:692) at sun.misc.Resource.cachedInputStream(Resource.java:61) at sun.misc.Resource.getByteBuffer(Resource.java:144) at java.net.URLClassLoader.defineClass(URLClassLoader.java:256) at java.net.URLClassLoader.access$000(URLClassLoader.java:58) at java.net.URLClassLoader$1.run(URLClassLoader.java:197) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) Could not find the main class: com.mainClass. Program will exit.

My pom:

<plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-shade-plugin</artifactId>
                <version>1.5</version>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>shade</goal>
                    </goals>
                    <configuration>
                        <filter>
                            <excludes>
                                <exclude>META-INF/*.SF</exclude>
                                <exclude>META-INF/*.DSA</exclude>
                                <exclude>META-INF/*.RSA</exclude>
                            </excludes>
                        </filter>
                        <transformers>
                            <transformer
                                implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                <mainClass>com.mainClass</mainClass>
                            </transformer>
                        </transformers>
                    </configuration>
                </execution>
            </executions>
        </plugin>
    </plugins>

score 27 · Answer 1 · edited Feb 14 '19 at 00:48

The SecurityException comes up because one of your dependencies is a signed jar. As the shade plugin is repacking this jar, it gets invalid. -> SecurityException at launch

To solve the problem, you have to unsign the dependency jars while repacking them. This can be done by simply not repacking the files that make the jar signed, using a filter:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-shade-plugin</artifactId>
    <version>1.5</version>
    <executions>
        <execution>
            <id>stand-alone</id>
            <phase>package</phase>
            <goals>
                <goal>shade</goal>
            </goals>
            <configuration>
                <shadedArtifactAttached>true</shadedArtifactAttached>
                <shadedClassifierName>stand-alone</shadedClassifierName>
                <filters>
                    <filter>
                        <!--
                            Exclude files that sign a jar
                            (one or multiple of the dependencies).
                            One may not repack a signed jar without
                            this, or you will get a
                            SecurityException at program start.
                        -->
                        <artifact>*:*</artifact>
                        <excludes>
                            <exclude>META-INF/*.SF</exclude>
                            <exclude>META-INF/*.RSA</exclude>
                            <exclude>META-INF/*.INF</exclude> <!-- This one may not be required -->
                        </excludes>
                    </filter>
                </filters>
            </configuration>
        </execution>
    </executions>
</plugin>

This solution was extracted from here: https://issues.apache.org/jira/browse/MSHADE-61

score 2 · Accepted Answer · answered Dec 24 '11 at 00:34

2

The problem is because of java version. I didn't notice that my new ide automatically use ibm's java, when I change the jre to sun's java ,it works well:)

answered Dec 24 '11 at 00:34

lucky_start_izumi

2,511
13
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score 0 · Answer 3 · answered Nov 29 '11 at 05:32

0

The last line of the stacktrace above says

Could not find the main class: com.mainClass.

Perhaps a typo in the classname or the class is not compiled before the plugin in invoked?

answered Nov 29 '11 at 05:32

Raghuram

51,854
11
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Sorry, I don't think it's the name's problem. Or it should give exception as noclassdeffoundexception. – lucky_start_izumi Nov 30 '11 at 00:15

Maven shade jar throw exception

3 Answers3

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