SpringBoot的pom.xml文件中设置多环境配置信息

Java项目开发中会用到多种中间件，比如MySQL、Redis、RocketMQ等，每个项目又存在开发环境、测试环境、验收环境、生产环境等。有种方案是把这些配置信息放到pom.xml文件中，方便Jenkins进行打包，也方便开发。

1. 示例代码结构

2. pom.xml配置文件

<?xml version="1.0" encoding="UTF-8"?>
<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><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.7.0</version></parent><groupId>vip.buddha</groupId><artifactId>springboot-demo</artifactId><version>1.0-SNAPSHOT</version><properties><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency></dependencies><profiles><!-- 开发环境 --><profile><id>dev</id><activation><activeByDefault>true</activeByDefault></activation><properties><db.url>jdbc:mysql://localhost:3306/dev_db</db.url><db.username>dev_user</db.username><db.password>dev_password</db.password></properties></profile><!-- 生产环境 --><profile><id>prod</id><activation><activeByDefault>false</activeByDefault></activation><properties><db.url>jdbc:mysql://localhost:3306/prod_db</db.url><db.username>prod_user</db.username><db.password>prod_password</db.password></properties></profile></profiles><build><resources><resource><directory>src/main/resources</directory><filtering>true</filtering><!-- 添加以下配置，明确包含YAML文件 --><includes><include>**/*.yml</include></includes></resource></resources><plugins><plugin><artifactId>maven-resources-plugin</artifactId><configuration><delimiters><delimiter>${}</delimiter> <!-- 使用 ${} 作为占位符 --></delimiters><useDefaultDelimiters>false</useDefaultDelimiters> <!-- 禁用默认的 @..@ --></configuration></plugin></plugins></build></project>

3. application.yml文件

spring:datasource:url: ${db.url}username: ${db.username}password: ${db.password}

4. TestController文件

package vip.buddha.controller;import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
public class TestController {@Value("${spring.datasource.url}")private String url;@Value("${spring.datasource.username}")private String username;@Value("${spring.datasource.password}")private String password;@RequestMapping("/test")public void test() {System.out.println("url:" + url);System.out.println("username:" + username);System.out.println("password:" + password);}
}

5. Main文件

package vip.buddha;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplication
public class Main {public static void main(String[] args) {SpringApplication.run(Main.class, args);}
}

6. 验证结果

通过上面步骤，启动项目

启动后，target/classes下的application.yml文件内容就被替换过来了。

访问http://localhost:8080/test后，配置信息就在接口控制台按照预期给显示出来。如果想测试另外的一套配置信息，maven这边勾选另外的配置即可。