深度对比与解析SpringBoot中的application.properties与application.yml

server.port=8080
spring.datasource.url=jdbc:mysql://localhost:3306/mydb

server:
  port: 8080
spring:
  datasource:
    url: jdbc:mysql://localhost:3306/mydb

spring:
  profiles:
    active: dev
  redis:
    cluster:
      nodes:
        - 192.168.1.1:7001
        - 192.168.1.2:7002
        - 192.168.1.3:7003
    timeout: 3000

spring.profiles.active=dev
spring.redis.cluster.nodes[0]=192.168.1.1:7001
spring.redis.cluster.nodes[1]=192.168.1.2:7002
spring.redis.cluster.nodes[2]=192.168.1.3:7003
spring.redis.timeout=3000

# 公共配置
spring:
  application:
    name: myapp

---
# 开发环境配置
spring:
  profiles: dev
server:
  port: 8080

---
# 生产环境配置
spring:
  profiles: prod
server:
  port: 80

# 自动识别为数值
port: 8080  
# 明确字符串
version: "2023" 
# 布尔值
enabled: true

# 数值
port=8080
# 字符串
version=2023
# 布尔值
enabled=true

# Properties更紧凑
logging.level.root=INFO
logging.level.org.springframework=DEBUG

# YAML层级更清晰
logging:
  level:
    root: INFO
    org.springframework: DEBUG

# YAML明显优势
spring:
  datasource:
    url: jdbc:mysql://localhost:3306/db
    username: user
    password: pass
    hikari:
      pool-name: my-pool
      maximum-pool-size: 10

spring.datasource.url=jdbc:mysql://localhost:3306/db
spring.datasource.username=user
spring.datasource.password=pass
spring.datasource.hikari.pool-name=my-pool
spring.datasource.hikari.maximum-pool-size=10

import yaml
import re

def properties_to_yaml(prop_str):
    data = {}
    for line in prop_str.split('\n'):
        if '=' in line and not line.strip().startswith('#'):
            key, value = line.split('=', 1)
            keys = key.split('.')
            current = data
            for k in keys[:-1]:
                current = current.setdefault(k, {})
            current[keys[-1]] = value.strip()
    return yaml.dump(data, sort_keys=False)

# 示例转换
print(properties_to_yaml("""
server.port=8080
spring.datasource.url=jdbc:mysql://localhost/db
"""))

# 统一管理多服务配置
spring:
  cloud:
    config:
      server:
        git:
          uri: https://github.com/config-repo
          search-paths:
            - '{application}'
          username: git-user
          password: git-pass

# 两种格式都支持环境变量替换
password: ${DB_PASSWORD}

# 可能被解析为布尔值
enabled: off  # → false
enabled: "off" # → 字符串"off"