mahout0.7成功编译总结

 

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一直在学习mahout，工作中使用的是0.7跑算法，进行测试，但是在使用maven导入eclipse中构建的时候出现了问题，

首先由于m2e的lifeStyle覆盖问题，两个插件不能使用，如下图

 

m2e插件现在已经被eclipse托管，在看eclipse官方网站看过文档后终于找到解决方案，

http://wiki.eclipse.org/M2E_plugin_execution_not_covered

 

解决方案如下：打开我们出现问题的pom文件

例如 mahout-core下的pom文件，出错的地方，表示m2e不知道怎么处理该插件（M2E plugin execution not covered）

 

 

 

鼠标放到错误地方会出现

 

 

 

选择第二项Mark goal run as .....，如果第三项(Discover new m2e connectors)能解决最好，有的时候eclipse会出现一些connectors更新，不过很少，大多数都是使用第二种方法解决，选择后我们会看见错误提示消失

 

同理mahout-examples下的pom文件也这样解决如下图

 

 

 

同理 mahout-integration下的pom文件也这样解决如下图

 

 

 

同理mahout-math下的pom文件也这样解决如下图

 

 

 

 

mahout-math的pom build中插件配置是存在问题，我们最后在解决这个问题，下面继续maven问题的解决

 

我们如下图操作

 

 

 

然后

 

 

 

我们打开lifecycle Mapping的配置文件将全部的

 <action >

        <ignore />

  </action >

  换成

    <action>

        <execute/>

   </action >

或者直接将下面粘贴进去

<?xml version="1.0" encoding="UTF-8"?>
<lifecycleMappingMetadata>
  <pluginExecutions>
    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-antrun-plugin</artifactId>
        <versionRange>1.6</versionRange>
        <goals>
          <goal>run</goal>
        </goals>
      </pluginExecutionFilter>
      <action>
        <execute/>
      </action>
    </pluginExecution>
    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-dependency-plugin</artifactId>
        <versionRange>2.1</versionRange>
        <goals>
          <goal>copy-dependencies</goal>
        </goals>
      </pluginExecutionFilter>
      <action>
         <execute/>
      </action>
    </pluginExecution>
    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>org.apache.mahout</groupId>
        <artifactId>mahout-collection-codegen-plugin</artifactId>
        <versionRange>1.0</versionRange>
        <goals>
          <goal>generate</goal>
        </goals>
      </pluginExecutionFilter>
      <action>
        <execute/>
      </action>
    </pluginExecution>
  </pluginExecutions>
</lifecycleMappingMetadata>

 

注意红色部分,默认是忽略而不是执行，需要修改成执行，或者把以上直接拷贝过去

上面的maven-antrun-plugin,mahout-collection-codegen-plugin插件我们设置的都是执行

 

记得保存文件，然后在我们打开lifecycle Mapping的配置文件的配置菜单上重载红色框框下面按钮

 

 

前面说到mahout-math pom中 build配置是存在问题的，

木配置把生成的类包的存放目录添加进classpath中去

（生成路径>${project.build.directory}/generated-sources ，测试目录${project.build.directory}/generated-test-sources）

 

如果目录不同，请自己对应。

 <configuration>
              <!--<mainExcludes>-->
              <!--<mainExclude>**/AbstractBooleanList.java</mainExclude>-->
              <!--<mainExclude>**/BooleanArrayList.java</mainExclude>-->
              <!--<mainExclude>**/BooleanBufferConsumer.java</mainExclude>-->
              <!--</mainExcludes>-->
              <!--<testExcludes>-->
              <!--<testExclude>**/BooleanArrayListTest.java</testExclude>-->
              <!--</testExcludes>-->
              <outputDirectory>${project.build.directory}/generated-sources/mahout</outputDirectory>

              <testOutputDirectory>${project.build.directory}/generated-test-sources/mahout</testOutputDirectory>

 </configuration>

  新增多个java文件源码包，maven本身是不支持的，我们这里需要一个插件来解决这个问题

        <plugin>

        <groupId>org.codehaus.mojo</groupId>
        <artifactId>build-helper-maven-plugin</artifactId>
        <executions>
          <execution>
            <id>add-source</id>
            <phase>generate-sources</phase>
            <goals>
              <goal>add-source</goal>
            </goals>
            <configuration>
              <sources>
                <source>${project.build.directory}/generated-sources/mahout</source>
              </sources>
            </configuration>
          </execution>
          <execution>
            <id>add-test-source</id>
            <phase>generate-sources</phase>
            <goals>
              <goal>add-test-source</goal>
            </goals>
            <configuration>
              <sources>
                <source>${project.build.directory}/generated-test-sources/mahout</source>
              </sources>
            </configuration>
          </execution>
        </executions>
      </plugin>

 

或者我们直接粘贴0.8版本的build配置，0.8修正了这个问题，下面是0.8的配置

 

<build>
    <defaultGoal>install</defaultGoal>

    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <source>1.6</source>
          <target>1.6</target>
        </configuration>
      </plugin>

      <plugin>
        <groupId>org.apache.mahout</groupId>
        <artifactId>mahout-collection-codegen-plugin</artifactId>
        <executions>
          <execution>
            <phase>generate-sources</phase>
            <goals>
              <goal>generate</goal>
            </goals>
            <configuration>
              <!--<mainExcludes>-->
              <!--<mainExclude>**/AbstractBooleanList.java</mainExclude>-->
              <!--<mainExclude>**/BooleanArrayList.java</mainExclude>-->
              <!--<mainExclude>**/BooleanBufferConsumer.java</mainExclude>-->
              <!--</mainExcludes>-->
              <!--<testExcludes>-->
              <!--<testExclude>**/BooleanArrayListTest.java</testExclude>-->
              <!--</testExcludes>-->
              <outputDirectory>${project.build.directory}/generated-sources/mahout</outputDirectory>
              <testOutputDirectory>${project.build.directory}/generated-test-sources/mahout</testOutputDirectory>
            </configuration>
          </execution>
        </executions>
      </plugin>

      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>build-helper-maven-plugin</artifactId>
        <executions>
          <execution>
            <id>add-source</id>
            <phase>generate-sources</phase>
            <goals>
              <goal>add-source</goal>
            </goals>
            <configuration>
              <sources>
                <source>${project.build.directory}/generated-sources/mahout</source>
              </sources>
            </configuration>
          </execution>
          <execution>
            <id>add-test-source</id>
            <phase>generate-sources</phase>
            <goals>
              <goal>add-test-source</goal>
            </goals>
            <configuration>
              <sources>
                <source>${project.build.directory}/generated-test-sources/mahout</source>
              </sources>
            </configuration>
          </execution>
        </executions>
      </plugin>

      <!-- create test jar so other modules can reuse the math test utility classes. -->
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-jar-plugin</artifactId>
        <executions>
          <execution>
            <goals>
              <goal>test-jar</goal>
            </goals>
            <phase>package</phase>
          </execution>
        </executions>
      </plugin>

      <plugin>
        <artifactId>maven-javadoc-plugin</artifactId>
      </plugin>

      <plugin>
        <artifactId>maven-source-plugin</artifactId>
      </plugin>

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-remote-resources-plugin</artifactId>
        <configuration>
          <appendedResourcesDirectory>../src/main/appended-resources</appendedResourcesDirectory>
          <resourceBundles>
            <resourceBundle>org.apache:apache-jar-resource-bundle:1.4</resourceBundle>
          </resourceBundles>
          <supplementalModels>
            <supplementalModel>supplemental-models.xml</supplementalModel>
          </supplementalModels>
        </configuration>
      </plugin>
    </plugins>
  </build>

 

 

更新配置

 

 

 

或者我们直接把下面改好的配置替换原有build配置(下面的是0.8的配置) ,建议还是使用上面第一种

 

 

 

运行maven插件  clean install -Dmaven.test.skip=true -e -X

 

 

下面是apache的一个下载正式版本的依赖，对有些人可能有用

          <repository>
               <id>apache.releases</id>
               <name>Apache Snapshot Repository</name>
               <url>https://repository.apache.org/service/local/repositories/releases/content/</url>
          </repository>