Maven 阴影 jar 抛出异常

Question

我有以下异常:

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.

我的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>

Answer 1

SecurityException出现是因为您的依赖项之一是签名的 jar。
由于 shade 插件正在重新打包这个 jar，它变得无效。 -> SecurityException发布时

为了解决这个问题，你必须在重新打包它们时取消对依赖 jar 的签名。
这可以通过使用过滤器简单地不重新打包使 jar 签名的文件来完成:

<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>

这个解决方案是从这里提取的:
https://issues.apache.org/jira/browse/MSHADE-61