maven-shade-plugin打包无法加载spring问题

最新推荐文章于 2023-06-01 09:30:10 发布

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本文介绍如何在Spark项目中集成Spring框架，并通过Maven进行正确打包避免启动错误。针对Spring加载xsd文件失败的问题，提供了修改Maven配置的具体解决方案。

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spark工程集成spirng，在main方法中加载spring

public static void main(String[] args) {
    SpringContainer.getSpringContext();
    SummarySpark summary = new SummarySpark(args);
    summary.start();
}

public class SpringContainer {
    public static FileSystemXmlApplicationContext getSpringContext() {
        return MySpringContainer.context;
    }

    private static class MySpringContainer {
        private static FileSystemXmlApplicationContext context = new FileSystemXmlApplicationContext(
                new String[]{"classpath:META-INF/spring/*.xml"});
    }
}

maven打包插件:

<build>
<pluginManagement>
   <plugins>
      <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
         <version>3.3</version>
         <configuration>
            <source>1.8</source>
            <target>1.8</target>
            <encoding>utf8</encoding>
         </configuration>
      </plugin>
      <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-source-plugin</artifactId>
         <version>2.2.1</version>
         <executions>
            <execution>
               <id>attach-sources</id>
               <phase>package</phase>
               <goals>
                  <goal>jar-no-fork</goal>
               </goals>
            </execution>
         </executions>
      </plugin>
      <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-shade-plugin</artifactId>
         <version>3.1.0</version>
         <executions>
            <execution>
               <phase>package</phase>
               <goals>
                  <goal>shade</goal>
               </goals>
               <configuration>
                  <transformers>
                     <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                        <mainClass>********</mainClass>
                     </transformer>
                  </transformers>
               </configuration>
            </execution>
         </executions>
      </plugin>
   </plugins>
</pluginManagement>
  </build>

用maven-shade-plugin插件打包后，启动报错，spring在启动时会加载xsd文件，它首先会到本地查找xsd文件（一般都会包含在spring的jar包中），如果找不到则会到xml头部定义的url指定路径下中去寻找xsd，如果找不到则会报错。

修改后主pom：

<build>
   <pluginManagement>
      <plugins>
         <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.3</version>
            <configuration>
               <source>1.8</source>
               <target>1.8</target>
               <encoding>utf8</encoding>
            </configuration>
         </plugin>
         <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-source-plugin</artifactId>
            <version>2.2.1</version>
            <executions>
               <execution>
                  <id>attach-sources</id>
                  <phase>package</phase>
                  <goals>
                     <goal>jar-no-fork</goal>
                  </goals>
               </execution>
            </executions>
         </plugin>
         <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>3.1.0</version>
            <executions>
               <execution>
                  <phase>package</phase>
                  <goals>
                     <goal>shade</goal>
                  </goals>
                  <configuration>
                     <transformers>
                        <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                           <mainClass>*****</mainClass>
                        </transformer>
                        <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">  
                                 <resource>META-INF/spring.handlers</resource>  
                             </transformer>  
                             <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">  
                                 <resource>META-INF/spring.schemas</resource>  
                             </transformer>
                     </transformers>
                  </configuration>
               </execution>
            </executions>
         </plugin>
      </plugins>
   </pluginManagement>
   </build>

在要打包的模块引入主pom的maven插件

<build>
   <plugins>
      <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
      </plugin>
      <plugin>
               <groupId>org.apache.maven.plugins</groupId>
               <artifactId>maven-shade-plugin</artifactId>
           </plugin>
   </plugins>
</build>