无法使用 maven shade 插件构建可执行 jar答案

【问题标题】：not able to build executable jar using maven shade plugin无法使用 maven shade 插件构建可执行 jar
【发布时间】：2020-06-25 04:12:15
【问题描述】：

我需要使用 maven shade 插件检查 anagram java 文件，并需要添加清单和内部版本号。我试过下面的代码。

<project XML="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.fresco.play</groupId>
    <artifactId>maven-anagram-finder</artifactId>
    <packaging>jar</packaging>
    <version>0.0.1-SNAPSHOT</version>
    <name>maven-anagram-finder</name>
    <url>http://maven.apache.org</url>

    <!-- Insert test dependency here -->
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>2.1</version>
                <configuration>
                    <transformers>
                        <transformer>
                            <manifestEntries>
                                <mainClass>com.fresco.play.Anagram</mainClass>
                                <Build-Number>10</Build-Number>
                            </manifestEntries>
                        </transformer>
                    </transformers>
                </configuration>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

这是我在尝试使用 jdk1.8 版本构建时遇到的错误。所有测试用例都通过了，但构建失败并出现此错误

[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 48.286 s
[INFO] Finished at: 2020-06-25T09:23:24+05:30
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-shade-plugin:2.1:shade (default) on project maven-anagram-finder: Unable to parse configuration of mojo org.apache.maven.plugins:maven-shade-plugin:2.1:shade for parameter transformer: Cannot create instance of interface org.apache.maven.plugins.shade.resource.ResourceTransformer: org.apache.maven.plugins.shade.resource.ResourceTransformer.<init>() -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginConfigurationException

我已经尝试了所有方法。但无法解决。你能帮忙吗？

【问题讨论】：

我通过添加转换器实现解决了这个问题。谢谢。
这是最终代码。
如果您自己解决了问题，我建议您将修复作为答案发布或关闭问题。

标签： jar executable maven-shade-plugin

【解决方案1】：

我通过添加转换器实现解决了这个问题。谢谢。

4.0.0 com.fresco.play maven-anagram-finder 罐 0.0.1-快照 maven-anagram-finder http://maven.apache.org

<!-- Insert test dependency here -->
<dependencies>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.5</version>
    </dependency>
</dependencies>
<build>
    <finalName>maven-anagram-finder</finalName>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>2.1</version>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>shade</goal>
                    </goals>
                    <configuration>
                        <transformers>
                            <transformer
                                implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                <mainClass>com.fresco.play.Anagram</mainClass>
                            </transformer>
                            <transformer
                                implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                <manifestEntries>
                                    <Main-Class>com.fresco.play.Anagram</Main-Class>
                                    <Build-Number>10</Build-Number>
                                </manifestEntries>

                            </transformer>
                        </transformers>
                    </configuration>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

【讨论】：