使用maven profile指定配置文件打包適用多環境

1.新建maven項目,   在pom.xml中添加 profile節點信息以下:

<profiles>
		<profile>
			<!-- 開發環境 -->
			<id>dev</id>
			<properties>
				<environment>development</environment><!-- 節點名字environment是本身隨意取的 -->
			</properties>
			<activation>
				<activeByDefault>true</activeByDefault><!-- 默認激活該profile節點-->
			</activation>
		</profile>
		<profile>
			<!-- 測試環境 -->
			<id>test</id>
			<properties>
				<environment>test</environment>
			</properties>
		</profile>
		<profile>
			<!-- 預演環境 -->
			<id>prev</id>
			<properties>
				<environment>preview</environment>
			</properties>
		</profile>
		<profile>
			<!-- 生產環境 -->
			<id>prod</id>
			<properties>
				<environment>production</environment>
			</properties>
		</profile>
</profiles>

 2. 在項目中添加各環境須要的數據源配置文件,分不一樣目錄存放, 分別是開發,測試, 預演,生產  環境. 以下圖左邊部分所示.  

3. pom.xml中配置resource節點信息.

<build>			
		<resources>
			<resource>
				<directory>src/main/resources</directory>
				<excludes>
					<exclude>environment/development/*</exclude>  
					<exclude>environment/test/*</exclude>  
					<exclude>environment/preview/*</exclude>  
                	<exclude>environment/production/**</exclude>
				</excludes>
			</resource>
			<resource>
				<directory>src/main/resources/environment/${environment}</directory>
				<targetPath>environment/${environment}</targetPath>
			</resource>
		</resources>
	</build>

resource節點信息解釋: 

<directory>src/main/resources</directory> <!--打包時包含src/main/resources目錄下全部"子"文件 和 "孫"文件.如config 和environment -->
<exclude>environment/development/**</exclude> <!--打包時排除src/main/resources/environment/development下全部"子"文件 和 "孫"文件.-->
<exclude>environment/test/**</exclude> <!--打包時排除src/main/resources/environment/test下全部"子"文件 和 "孫"文件.-->
<exclude>environment/preview/**</exclude> <!--打包時排除src/main/resources/environment/preview下全部"子"文件 和 "孫"文件.-->
<exclude>environment/production/**</exclude><!--打包時排除src/main/resources/environment/production下全部"子"文件 和 "孫"文件.-->
<!-- 注意點: 若是寫一個心號*, 如<exclude>environment/development/*</exclude> 則表示:打包時排除src/main/resources/environment/development下全部"子"文件, 不排除"孫"文件, 如上一個截圖所示.-->
<!-- 以上配置優先度從上到下 遞增, 這就達到目的: config目錄下的配置各環境都須要, 而其它環境相關的配置只會有一個目錄被打包--->

<directory>src/main/resources/environment/${environment}</directory> <!-- 打包時包含src/main/resources/environment/${environment}下全部"子"文件,environment變量值來自profile中賦值 -->
<targetPath>environment/${environment}</targetPath><!--指定src/main/resources/environment/${environment}全部"子文件" 打包 到包的哪一個目錄 -->

4.  項目打包.   打包命令mvn package -Pdev來指定激活id爲 dev 的profile節點, 這樣, 開發環境配置文件就會被打包.
開發: mvn package -Pdev (由於配置了默認激活dev部分, 因此也能夠使用mvn package, 這與 mvn package -Pdev 效果相同)
測試: mvn package -Ptest
預演:mvn package -Pprev
生產:mvn package -Pprod

 

除此方法外動態的指定配置文件咱們還能夠使用ClassPathXmlApplicationContext

1.建立一個xml文件config.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://www.springframework.org/schema/beans"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd">
    <!--配置文件對象，id是惟一標識，class是對應的配置類，property是配置字段-->
	<bean id="test" class="flink_job.omega_navigation_filter.object.Config">
		<property name="source_kafka_topic_1" value="topic1" />
		<property name="source_kafka_server_1" value="bigdata-swan:9092" />
		<property name="source_kafka_group_id_1" value="ora_log_20171031" />
		<property name="source_kafka_offset_1" value="latest" />
		<property name="output_kafka_topic" value="w_omega_stat_native_fmt" />
		<property name="output_kafka_server" value="bigdata-swan:9092" />
		
	</bean>
   <bean id="local" class="flink_job.omega_navigation_filter.object.Config">
		<property name="source_kafka_topic_1" value="topic1" />
		<property name="source_kafka_server_1" value="bigdata-swan:9092" />
		<property name="source_kafka_group_id_1" value="ora_log_20171031" />
		<property name="source_kafka_offset_1" value="latest" />
		<property name="output_kafka_topic" value="w_omega_stat_native_fmt" />
		<property name="output_kafka_server" value="bigdata-swan:9092" />
		
	</bean>
</beans>

2.建立對應的配置類config

public class Config implements Serializable{
	private static final long serialVersionUID = 1L;
	private String source_kafka_topic_1;
	private String source_kafka_server_1;
	private String source_kafka_group_id_1;
	private String source_kafka_offset_1;
	private String source_kafka_topic_2;
	private String source_kafka_server_2;
	private String source_kafka_group_id_2;
	private String source_kafka_offset_2;
	private String output_kafka_topic;
	private String output_kafka_server;
	
	public static long getSerialversionuid() {
		return serialVersionUID;
	}
	public String getSource_kafka_topic_1() {
		return source_kafka_topic_1;
	}
	public void setSource_kafka_topic_1(String source_kafka_topic_1) {
		this.source_kafka_topic_1 = source_kafka_topic_1;
	}
	public String getSource_kafka_server_1() {
		return source_kafka_server_1;
	}
	public void setSource_kafka_server_1(String source_kafka_server_1) {
		this.source_kafka_server_1 = source_kafka_server_1;
	}
	public String getSource_kafka_group_id_1() {
		return source_kafka_group_id_1;
	}
	public void setSource_kafka_group_id_1(String source_kafka_group_id_1) {
		this.source_kafka_group_id_1 = source_kafka_group_id_1;
	}
	public String getSource_kafka_offset_1() {
		return source_kafka_offset_1;
	}
	public void setSource_kafka_offset_1(String source_kafka_offset_1) {
		this.source_kafka_offset_1 = source_kafka_offset_1;
	}
	public String getSource_kafka_topic_2() {
		return source_kafka_topic_2;
	}
	public void setSource_kafka_topic_2(String source_kafka_topic_2) {
		this.source_kafka_topic_2 = source_kafka_topic_2;
	}
	public String getSource_kafka_server_2() {
		return source_kafka_server_2;
	}
	public void setSource_kafka_server_2(String source_kafka_server_2) {
		this.source_kafka_server_2 = source_kafka_server_2;
	}
	public String getSource_kafka_group_id_2() {
		return source_kafka_group_id_2;
	}
	public void setSource_kafka_group_id_2(String source_kafka_group_id_2) {
		this.source_kafka_group_id_2 = source_kafka_group_id_2;
	}
	public String getSource_kafka_offset_2() {
		return source_kafka_offset_2;
	}
	public void setSource_kafka_offset_2(String source_kafka_offset_2) {
		this.source_kafka_offset_2 = source_kafka_offset_2;
	}
	public String getOutput_kafka_topic() {
		return output_kafka_topic;
	}
	public void setOutput_kafka_topic(String output_kafka_topic) {
		this.output_kafka_topic = output_kafka_topic;
	}
	public String getOutput_kafka_server() {
		return output_kafka_server;
	}
	public void setOutput_kafka_server(String output_kafka_server) {
		this.output_kafka_server = output_kafka_server;
	}
	
}

3.程序中指定調用的配置對象的id

public static ApplicationContext ctx = new ClassPathXmlApplicationContext("config.xml");
	public static Config co = (Config) ctx.getBean("test");

這樣咱們就能獲取對應的字段