maven項目多模塊部署的時候構建順序

今天在構建dp-onedata的時候出現一個問題，問題描述以下

根目錄的pom文件以下

<groupId>com.xxx.xxx</groupId>
<artifactId>dponedata</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<modules>
    <module>dponedata-common</module>
    <module>dponedata-web</module>
</modules>

dponedata有2個子模塊，分別是common模塊和web模塊，其中web模塊依賴commot模塊 

<parent>
    <artifactId>dponedata</artifactId>
    <groupId>com.xxx.xxx</groupId>
    <version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>dponedata-web</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<dependencies>
    <dependency>
        <groupId>com.xxx.xxx</groupId>
        <artifactId>dponedata-common</artifactId>
        <version>${dponedata-common.version}</version>
    </dependency>
</dependencies>

common模塊配置即parent的子模塊

<parent>
    <artifactId>dponedata</artifactId>
    <groupId>com.xxx.xxx</groupId>
    <version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>dponedata-common</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>

 

其中common模塊和web模塊分別使用了autocofig作變量值的替換

<build>
    <finalName>dponedata-web</finalName>
    <plugins>
        <!-- 添加此插件以使用autoconf -->
        <plugin>
            <groupId>com.alibaba.citrus.tool</groupId>
            <artifactId>autoconfig-maven-plugin</artifactId>
            <version>1.2</version>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>autoconfig</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>


<build>
    <finalName>dponedata-common</finalName>
    <plugins>
        <!-- 添加此插件以使用autoconf -->
        <plugin>
            <groupId>com.alibaba.citrus.tool</groupId>
            <artifactId>autoconfig-maven-plugin</artifactId>
            <version>1.2</version>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>autoconfig</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

 

autofonfig的使用能夠參考http://docs.alibaba-inc.com:8090/display/RC/autoconfig 或者官網 http://openwebx.org/docs/autoconfig.html

 

這裏打包很正常，打完common的jar包再打web的war包，autocofing也起了做用作變量值的替換

 

下面使用了assemble插件機型打包，把web包打成dponedata的tgz包

<id>tgz</id>
<!-- 應用名.war（壓縮包解壓後的目錄名） -->
<baseDirectory>dponedata.war</baseDirectory>
<formats>
    <format>tar.gz</format>
</formats>

<fileSets>
    <fileSet>
        <!-- 要壓縮的目錄，請按實際目錄填寫 -->
        <directory>dponedata-web/target/dponedata-web</directory>
        <!-- 輸出的目錄,此處爲空便可 -->
        <outputDirectory></outputDirectory>
        <includes>
            <include>**/**</include>
        </includes>
    </fileSet>
</fileSets>

可是問題出現了，這個tgz包中的變量值是沒有替換的，看下mvn的log以下：

[INFO] Reactor Summary:

[INFO]

[INFO] dponedata .......................................... SUCCESS [  6.601 s]

[INFO] dponedata-common ................................... SUCCESS [  4.451 s]

[INFO] dponedata-web ...................................... SUCCESS [  3.641 s]

 

看起來是是先打了跟項目的包，再去打了common和web包，因此web包中的變量已經替換，可是根路徑的tgz包沒有生成

 

因此咱們要儘可能控制打包順序。讓打包的順序變成 commont-》web-》all

 

pom的打包順序是基於 topologic sorting的 能夠參考這個文檔：https://en.wikipedia.org/wiki/Topological_sorting

 

官網的reactor sorting以下 http://maven.apache.org/guides/mini/guide-multiple-modules.html

 

大體就如下幾個規則

 

• a project dependency on another module in the build

• a plugin declaration where the plugin is another modules in the build

• a plugin dependency on another module in the build

• a build extension declaration on another module in the build

• the order declared in the <modules> element (if no other rule applies)

 

根據第一個原則，父項目由於引入了全部須要的依賴要第一個執行，因此將其餘2個子module的父項目都設置成公共的pom

<parent>
    <groupId>com.xxx</groupId>
    <artifactId>parent</artifactId>
    <version>1.0.2</version>
</parent>

 

這時候打包的順序就對了

[INFO] Reactor Summary:

[INFO]

[INFO] dponedata-common ................................... SUCCESS [  2.938 s]

[INFO] dponedata-web ...................................... SUCCESS [  6.180 s]

[INFO] dponedata .......................................... SUCCESS [  6.570 s]