maven聚合和继承

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.dianping.dp</groupId>
    <artifactId>cord</artifactId>
    <name>cord</name>
    <packaging>pom</packaging>
    <version>1.4</version>
    <modules>
        <module>cord-core</module>
        <module>cord-api</module>
    </modules>

    <properties>
        <env>qa</env>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <java.src.version>1.7</java.src.version>
        <java.target.version>1.7</java.target.version>
        <project.encoding>UTF-8</project.encoding>

        <!-- Spring -->
        <spring.version>4.1.5.RELEASE</spring.version>
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.0.2</version>
                <configuration>
                    <source>${java.src.version}</source>
                    <target>${java.target.version}</target>
                    <encoding>${project.encoding}</encoding>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <distributionManagement>
        <repository>
            <id>dianping.repo</id>
            <url></url>
        </repository>
        <snapshotRepository>
            <id>dianping.repo.snapshots</id>
            <url>/dianping-snapshots</url>
        </snapshotRepository>
    </distributionManagement>

</project>

cord为cord-service cord-biz等模块的聚合模块，通过该模块可以构建整个项目的所有模块。cord本身也是一个maven项目，必须要有自己的pom，对于聚合模块，其打包方式packaging的值必须为pom,否则无法构建

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>cord</artifactId>
        <groupId>com.dianping.dp</groupId>
        <version>1.4</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>cord-api</artifactId>
    <name>cord-api</name>
    <packaging>jar</packaging>

    <dependencies>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.2.4</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-source-plugin</artifactId>
                <executions>
                    <execution>
                        <id>attach-sources</id>
                        <goals>
                            <goal>jar</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.0.2</version>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>