maven的profile实现配置的分离

在实际的开发中，如果需要

开发的时候，一套配置、测试的时候，一套配置、上线的时候又是一套配置。彼此修改，互不干涉

此时，就可以使用maven的profile

具体做法如下：

一：新建一个maven项目

二：在resources目录里面，新建dev、test、production三个目录，代表三种环境的配置文件，项目结构图如下：

三：分别在dev, test, production里面新建文件：application.properties，分别配置好各自的环境

比如说我这里的配置为：

dev/application.properties

spring.datasource.driverClassName=org.postgresql.Driver
spring.datasource.url=jdbc:postgresql://127.0.0.1/ods_sdp_development

test/application.properties

spring.datasource.driverClassName=org.postgresql.Driver
spring.datasource.url=jdbc:postgresql://10.4.18.100/ods_sdp_test

production/application.properties

spring.datasource.driverClassName=org.postgresql.Driver
spring.datasource.url=jdbc:postgresql://10.4.18.4/ods_sdp_production

四：配置pom.xml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>com.lala</groupId>
	<artifactId>profile</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>profile</name>
	<url>http://maven.apache.org</url>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
	</properties>

	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.10</version>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<profiles>

		<profile>
			<id>dev</id>
			<properties>
				<env>dev</env>
			</properties>
			<activation>
				<activeByDefault>true</activeByDefault>
			</activation>
		</profile>

		<!-- 测服 -->
		<profile>
			<id>test</id>
			<properties>
				<env>test</env>
			</properties>
		</profile>

		<!-- 生产 -->
		<profile>
			<id>production</id>
			<properties>
				<env>production</env>
			</properties>
		</profile>

	</profiles>

	<build>
	
		<resources>
			<resource>
				<directory>${project.basedir}/src/main/resources/${env}</directory>
				<includes>
					<include>*.*</include>
				</includes>
				<filtering>true</filtering>
			</resource>
			<resource>
				<directory>${project.basedir}/src/main/resources/</directory>
				<includes>
					<include>logback.xml</include>
				</includes>
				<filtering>true</filtering>
			</resource>
		</resources>
		
		<plugins>
			<plugin>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.2</version>
				<configuration>
					<source>1.7</source>
					<target>1.7</target>
				</configuration>
			</plugin>
		</plugins>
	</build>

</project>

五：写一个java文件，测试环境

com.lala.profile.App

package com.lala.profile;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
public class App 
{
    public static void main( String[] args )throws Exception
    {
    	ClassLoader cl = Thread.currentThread().getContextClassLoader();
    	
    	InputStream input = cl.getResourceAsStream("application.properties");
    	
    	InputStreamReader isr = new InputStreamReader(input);
    	
    	BufferedReader br = new BufferedReader(isr);
    	
    	String str = null;
    	
    	while( (str = br.readLine()) != null)
    	{
    		System.out.println(str);
    	}
        
    	br.close();
    	isr.close();
    	input.close();
    }
}

六：打包，测试

如果要测试 测试环境，则

mvn clean

mvn package -Ptest

[ly@lypc profile]$ java -cp target/profile-0.0.1-SNAPSHOT.jar com.lala.profile.App
spring.datasource.driverClassName=org.postgresql.Driver
spring.datasource.url=jdbc:postgresql://10.4.18.100/ods_sdp_test

生产环境测试

mvn clean

mvn package -Pproduction

[ly@lypc profile]$ java -cp target/profile-0.0.1-SNAPSHOT.jar com.lala.profile.App
spring.datasource.driverClassName=org.postgresql.Driver
spring.datasource.url=jdbc:postgresql://10.4.18.4/ods_sdp_production