maven 创建Hadoop程序

这里用来将新建的maven project 放入到现有的maven working set 中，这样我们就能看到项目之间的层级关系

选择下面的程序

在父项目中创建公共的pom，在pom中维护项目所需要的各种jar包其中version在properites中指定

在 midules中添加子模块

以下是两个主要的plugin

                同dependencyManageMent

        <pluginManagement>

            <plugins>

                <!-- maven project model -->

                <plugin>

                    <groupId>org.apache.avro</groupId>

                    <artifactId>avro-maven-plugin</artifactId>

                    <version>${avro.version}</version>

                </plugin>

                <plugin>

                    <groupId>org.apache.maven.plugins</groupId>

                    <artifactId>maven-compiler-plugin</artifactId>

                    <version>${maven.version}</version>

                    <configuration>

                        <source>${java.version}</source>

                        <target>${java.version}</target>

                    </configuration>

                </plugin>

                <plugin>

                    <groupId>org.apache.maven.plugins</groupId>

                    <artifactId>maven-resources-plugin</artifactId>

                    <version>${maven.resources.plugin}</version>

                </plugin>

            </plugins>

        </pluginManagement>

        

        设定jdk的版本以及编译版本

        <plugins>

            <!-- set the jdk version and compile level -->

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-compiler-plugin</artifactId>

                <configuration>

                    <source>${java.version}</source>

                    <target>${java.version}</target>

                </configuration>

            </plugin>

        </plugins>  

 子项目中：

 设置直系parent

下面设置avro(阿弗罗自动构建命令)

    <build>

        <plugins>

            <!-- maven project model -->

            <plugin>

                <groupId>org.apache.avro</groupId>

                <artifactId>avro-maven-plugin</artifactId>

                <executions>

                    <execution>

                        <id>generate-avro-test-sources</id>

                        <phase>generate-test-sources</phase>

                        <goals>

                            <goal>schema</goal>

                        </goals>

                    </execution>

                </executions>

                <configuration>

                    <includes>

                        <include>StringPair.avsc</include>

                    </includes>

                    <project>

                        <groupId>donggege.gege</groupId>

                    </project>

                    <sourceDirectory>src/main/resources/avro</sourceDirectory>

                    <outputDirectory>${project.build.main.directory}</outputDirectory>

                    <testSourceDirectory>src/main/resources/avro</testSourceDirectory>

                    <testOutputDirectory>${project.build.test.directory}</testOutputDirectory>

                </configuration>

            </plugin>

        </plugins>

    </build>  

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