使用 Shade-Plugin 正确最小化 Uber Jar

发布于 2024-12-26 06:21:37 字数 597 浏览 3 评论 0原文

我正在使用 Maven-Shade-Plugin 创建一个可运行的 Uber-jar。根据此页面上的最后一帧，可以通过以下方式最小化 jar 的大小：

<configuration>
      <minimizeJar>true</minimizeJar>
</configuration>

但此功能不考虑 log4j.properties 文件中声明的类。因此，例如 org.apache.log4j.appender.TimeAndSizeRollingAppender 不包含在 Uber-jar 中，即使它已在 log4j.properties 文件中声明。

我相信Spring也会面临同样的问题。如果我的代码仅引用接口 A 并且我的 Spring 文件包含实现 A 的类 B 的实例化，则 B 可能不会添加到 jar 中，因为它不在代码中。

我该如何解决这个问题？

原文

I am using the Maven-Shade-Plugin to create a runnable Uber-jar.
According to the last frame on this page, the size of the jar can be minimized by using:

<configuration>
      <minimizeJar>true</minimizeJar>
</configuration>

But this feature does not take into consideration the classes that are declared in the log4j.properties file. Hence, e.g. org.apache.log4j.appender.TimeAndSizeRollingAppender is not included in the Uber-jar, even though it’s declared in the log4j.properties file.

I believe I will face the same problem with Spring. If my code only refers to interface A and my Spring file contains an instantiation of class B that implements A, then B might not be added to the jar, since it’s not in the code.

How can I solve this problem?

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冷清清 2025-01-02 06:21:37

此功能已添加到 maven-shade-plugin 1.6 版（刚刚发布）中。现在，minimumJar 将不会删除专门包含在过滤器中的类。请注意，在过滤器中包含某些工件的类将排除该工件的非指定类，因此请务必包含您需要的所有类。

这是一个示例插件配置：

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-shade-plugin</artifactId>
    <version>1.6</version>    
    <executions>
        <execution>
            <phase>package</phase>
            <goals>
                <goal>shade</goal>
            </goals>                        
            <configuration>
                <minimizeJar>true</minimizeJar>    
                <filters> 
                    <filter>
                       <artifact>log4j:log4j</artifact>
                       <includes>
                           <include>**</include>
                       </includes>
                    </filter> 
                    <filter>
                       <artifact>commons-logging:commons-logging</artifact>
                       <includes>
                           <include>**</include>
                       </includes>
                    </filter>                      
                </filters>
            </configuration>
        </execution>
    </executions>
</plugin>

要仅包含特定的类，请在过滤器中的类名中使用路径斜杠将它们添加为包含（同样，未包含的类将被自动排除）。

<filter>
  <artifact>org.yourorg:your-artifact</artifact>
  <includes>
    <include>org/yourorg/yourartifact/api/*</include>
    <include>org/yourorg/yourartifact/util/*</include>
  </includes>
</filter>

This functionality has been added to version 1.6 of the maven-shade-plugin (just released). minimizeJar will now not remove classes that have been specifically included with filters. Note that including some of an artifact's classes in a filter will exclude non-specified classes for that artifact, so be sure to include all the classes that you need.

Here's an example plugin config:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-shade-plugin</artifactId>
    <version>1.6</version>    
    <executions>
        <execution>
            <phase>package</phase>
            <goals>
                <goal>shade</goal>
            </goals>                        
            <configuration>
                <minimizeJar>true</minimizeJar>    
                <filters> 
                    <filter>
                       <artifact>log4j:log4j</artifact>
                       <includes>
                           <include>**</include>
                       </includes>
                    </filter> 
                    <filter>
                       <artifact>commons-logging:commons-logging</artifact>
                       <includes>
                           <include>**</include>
                       </includes>
                    </filter>                      
                </filters>
            </configuration>
        </execution>
    </executions>
</plugin>

To only include specific classes, add them as includes using path slashes in the class name in a filter (again, non-included classes will be automatically excluded).

<filter>
  <artifact>org.yourorg:your-artifact</artifact>
  <includes>
    <include>org/yourorg/yourartifact/api/*</include>
    <include>org/yourorg/yourartifact/util/*</include>
  </includes>
</filter>

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