maven插件assembly打包的问题

以前一直使用assembly对项目打包，今天因为项目需求多添加了一个spring-tx的引用，结果打包之后启动总是报错：

Unable to locate Spring NamespaceHandler for XML schema namespace [http://www.springframework.org/schema/batch]

更换spring版本，各种clean，install都不行，最后发现是assembly插件打包时的一个缺陷，遇到重名的文件它只会打第一个，后面的都不会打包，所以META-INF/spring.handler和META-INF/spring.schema这两个文件在打包时出错了，只好更换了新的shade插件重新打包才成功。

贴一下shade的配置

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-shade-plugin</artifactId>
  <version>2.4.3</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> 
         <filters>  
          <filter>  
            <artifact>*:*</artifact>  
            <excludes>  
              <exclude>META-INF/*.SF</exclude>  
              <exclude>META-INF/*.DSA</exclude>  
              <exclude>META-INF/*.RSA</exclude>  
            </excludes>  
          </filter>  
        </filters>  
      </configuration>
    </execution>
  </executions>
</plugin>