用maven把所有类文件打到一个jar里面

storm是提交jar包运行程序的，这就需要解决依赖包的问题通常有两种办法 ：1.把依赖包放到storm的classpath下，2，把依赖包和自己的程序打成一个整包。

maven有assembly插件支持第二种，看pom.xml

    <dependencies>
        <dependency>
            <groupId>org.apache.storm</groupId>
            <artifactId>storm-core</artifactId>
            <version>0.9.5</version>
            <scope>provided</scope>
        </dependency>
        
        <!--
        自己程序依赖的包
        -->
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>com.xxx.storm.NotifyTopology</mainClass>
                        </manifest>
                    </archive>
                    <descriptors>
                        <descriptor>src/main/assembly/src.xml</descriptor>
                    </descriptors>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

再看src/main/assembly/src.xml

<assembly
    xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 http://maven.apache.org/xsd/assembly-1.1.0.xsd">
    <id>without_storm</id>
    <formats>
        <format>jar</format>
    </formats>
    <includeBaseDirectory>false</includeBaseDirectory>
    <dependencySets>
        <dependencySet>
            <useProjectArtifact>true</useProjectArtifact>
            <outputDirectory>/</outputDirectory>
            <unpack>true</unpack><!--解压-->
            <scope>runtime</scope>
            <excludes>
                <exclude>xxx-storm*:jar</exclude><!--自身的包-->
            </excludes>
        </dependencySet>
    </dependencySets>
    <fileSets>
        <fileSet>
            <directory>${project.basedir}targetclasses</directory>
            <outputDirectory>/</outputDirectory>
        </fileSet>
    </fileSets>
</assembly>

上面dependencySet排除自身的包，因为target/classes中已经有对应的class了，

排除storm本身的包在storm的dependency中加<scope>provided</scope>