SpringBoot实现多环境配置文件切换_Java

resources下application.yml、application-dev.yml、application-prod.yml多个配置文件。

spring:
  profiles:
    active: dev

spring:
  profiles:
    active: prod

一般都是通过修改spring.profiles.active值来修改加载不同环境的配置信息，可以把切换的dev/prod放到pom.xml文件来实现，避免手动修改。

1. 示例代码结构

2. pom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>
                <package.environment>dev</package.environment>
            </properties>
        </profile>

        <!-- 生产环境 -->
        <profile>
            <id>prod</id>
            <activation>
                <activebydefault>false</activebydefault>
            </activation>
            <properties>
                <package.environment>prod</package.environment>
            </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文件

spring:
  profiles:
    active: ${package.environment}

4. application-dev文件

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/dev_db
    username: dev_user
    password: dev_password

5. application-prod文件

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/prod_db
    username: prod_user
    password: prod_password

6. 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);
    }
}

7. 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);
    }
}