在maven配置文件中设置系统变量

时间:2014-09-01 11:34:53

标签: java maven environment-variables

是否可以在maven中设置可从java类中获得的系统属性。

我已经看到在surefire插件中这是可能的(here),如下所示;

String param = System.getProperty("my_parameter1");

<configuration>
    <systemPropertyVariables>
        <my_property1>${my_property1}</my_property1>
    </systemPropertyVariables>
</configuration>

但是我想了解我正在处理的环境,我已经将prod或dev作为maven profile参数传递 - 是否有可能通过设置变量来获取代码中的句柄在我调用的配置文件中,然后调用system.getProperty或其他方式?

由于

我的pom文件

<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>core</groupId>
    <artifactId>core</artifactId>
    <version>1.0</version>
    <packaging>jar</packaging>
    <build>
        <sourceDirectory>src</sourceDirectory>
        <testSourceDirectory>test</testSourceDirectory>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-jar-plugin</artifactId>
                <version>2.3</version>
                <configuration>
                    <warSourceDirectory>WebContent</warSourceDirectory>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.17</version>
                <configuration>
                    <parallel>methods</parallel>
                    <threadCount>10</threadCount>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>sonar-maven-plugin</artifactId>
                <version>2.1</version>
            </plugin>
        </plugins>
        <resources>
            <resource>
                <directory>src</directory>
                <excludes>
                    <exclude>**/*.java</exclude>
                </excludes>
            </resource>
            <resource>
                <directory>resources</directory>
                <includes>
                    <include>**/*.png</include>
                </includes>
            </resource>
        </resources>
    </build>
    <dependencies>
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
        </dependency>
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.3</version>
        </dependency>
        <dependency>
            <groupId>commons-codec</groupId>
            <artifactId>commons-codec</artifactId>
            <version>1.9</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.3.0</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.3.0</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.3.0</version>
        </dependency>
        <dependency>
            <groupId>org.mariadb.jdbc</groupId>
            <artifactId>mariadb-java-client</artifactId>
            <version>1.1.7</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
        </dependency>
        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-all</artifactId>
            <version>1.9.5</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.facebook4j</groupId>
            <artifactId>facebook4j-core</artifactId>
            <version>[2.0,)</version>
        </dependency>
        <dependency>
            <groupId>com.relayrides</groupId>
            <artifactId>pushy</artifactId>
            <version>0.3</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.16</version>
        </dependency>
        <dependency>
            <groupId>com.sun.mail</groupId>
            <artifactId>javax.mail</artifactId>
            <version>1.5.2</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>4.3.6.Final</version>
        </dependency>
        <dependency>
            <groupId>javax.mail</groupId>
            <artifactId>javax.mail-api</artifactId>
            <version>1.5.2</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>javax.activation</groupId>
            <artifactId>activation</artifactId>
            <version>1.1.1</version>
        </dependency>
        <dependency>
            <groupId>com.threewks.thundr</groupId>
            <artifactId>thundr-mailgun</artifactId>
            <version>1.1.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-io</artifactId>
            <version>1.3.2</version>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.3</version>
        </dependency>
    </dependencies>
    <profiles>
        <profile>
            <id>DEV</id>
            <properties>
                <swifte.url>jdbc:mariadb://ip:3306/swifte?autoReconnect=true</swifte.url>
                <swifte.username>user</swifte.username>
                <swifte.password>pass</swifte.password>
            </properties>
            <build>
                <resources>
                    <resource>
                        <directory>resources</directory>
                        <includes>
                            <include>JavaPNSDev.p12</include>
                        </includes>
                    </resource>
                </resources>
            </build>
        </profile>
        <profile>
            <id>PROD</id>
            <properties>
                <swifte.url>jdbc:mariadb://ip:3306/swifte?autoReconnect=true</swifte.url>
                <swifte.username>username</swifte.username>
                <swifte.password>pass</swifte.password>
            </properties>
            <build>
                <resources>
                    <resource>
                        <directory>resources</directory>
                        <includes>
                            <include>JavaPNSProd.p12</include>
                        </includes>
                    </resource>
                </resources>
            </build>
        </profile>
    </profiles>
</project>

1 个答案:

答案 0 :(得分:21)

您应该查看exec-maven-plugin

使用以下配置(注意<systemProperties>)...

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>exec-maven-plugin</artifactId>
    <version>1.3.2</version>
    <executions>
        <execution>
            <phase>package</phase>
            <goals>
                <goal>java</goal>
            </goals>
        </execution>
    </executions>
    <configuration>
        <mainClass>com.example.Main</mainClass>
        <arguments>
            <argument>argument1</argument>
        </arguments>
        <systemProperties>
            <systemProperty>
                <key>hello.world</key>
                <value>Hello Stack Overflow!</value>
            </systemProperty>
        </systemProperties>
    </configuration>
</plugin>

......以及以下课程......

package com.example;
public class Main {
    public static void main(String[] args) {
        String prop = System.getProperty("hello.world");
        System.out.println(prop);
    }
}

...并运行package(注意配置中的阶段 - 您可以根据需要进行更改,也许可以安装),它会从密钥{{1中打印出值Hello Stack Overflow! }}。所以基本上,插件在你构建时会执行你的程序。

另见exec:exec目标。在示例中,我使用了exec:java目标,但两者在功能上有所不同。

  

exec:exec在一个单独的过程中执行程序和Java程序。

     

exec:java在同一个VM中执行Java程序。


<强>更新

  

目前我正在根据myven pom文件中的配置文件在属性中设置一些值。是否可以在配置文件中设置此系统属性?因为实际上,我只有一个用于dev和prod的pom文件,而且我需要设置它。

是的,只需使用系统属性元素的hello.world元素中的${property.name}即可。例如:

<value>

插件<profiles> <profile> <activation> <activeByDefault>true</activeByDefault> </activation> <id>world</id> <properties> <hello.world>Hello World!</hello.world> </properties> </profile> <profile> <activation> <activeByDefault>false</activeByDefault> </activation> <id>stack</id> <properties> <hello.world>Hello Stack Overflow</hello.world> </properties> </profile> </profiles>

<systemProperties>

只需将个人资料更改为<systemProperties> <systemProperty> <key>hello.world</key> <value>${hello.world}</value> </systemProperty> </systemProperties> stack,邮件就会分别打印worldHello Stack Overflow


更新2

另一个插件是properties-maven-plugin。在一段时间内没有做任何事情,但是通过一些测试,必要的功能就在那里。

它有一个set-system-properties目标以及其他一些useful goals来帮助简化物业管理

Hello World