java se 项目获取环境变量加载不同的环境变量文件

JAVA SE 项目获取环境变量加载不同的环境变量文件

properties-context.xml

<bean id="application.properties" class="org.springframework.beans.factory.config.PropertiesFactoryBean">
    <property name="ignoreResourceNotFound" value="true" />
    <property name="locations">
        <list>
            <value>file:APP-INF/properties/${Runtime-Env}.properties</value>
            <value>classpath*:META-INF/config/properties/**/${Runtime-Env}.properties</value>
            <value>classpath*:META-INF/config/properties/**/*-${Runtime-Env}.properties</value>
        </list>
    </property>
</bean>

pom.xml

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-jar-plugin</artifactId>
    <configuration>
        <archive>
            <manifest>
                <addClasspath>true</addClasspath>
                <classpathPrefix>lib/</classpathPrefix>
                <mainClass>MainClass</mainClass>
            </manifest>
            <manifestEntries>
                <Runtime-Env>${runtime.env}</Runtime-Env>
            </manifestEntries>
        </archive>
    </configuration>
</plugin>

打包的时候会打到文件 META-INFO/MANIFEST.MF 里，demo：
Manifest-Version: 1.0
Runtime-Env: release
Archiver-Version: Plexus Archiver

java

JarFile jarFile = new JarFile(JAR_FILE);
Manifest mf = jarFile.getManifest();
Attributes ma = mf.getMainAttributes();
String env = ma.getValue(ENV);
System.setProperty(ENV, env);

java se 项目获取环境变量加载不同的环境变量文件

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