Struct AppConfig 

pub struct AppConfig {
    pub app: AppSection,
    pub database: DatabaseSection,
    pub cache: CacheSection,
    pub addons: AddonsSection,
    pub log: LogSection,
    pub server: ServerSection,
}

顶层应用配置（含 6 个 section）

Fields

app: AppSection

应用配置段

database: DatabaseSection

数据库配置段

cache: CacheSection

缓存配置段

addons: AddonsSection

插件配置段

log: LogSection

日志配置段

server: ServerSection

服务器配置段（HTTP 监听地址与端口）

Implementations

impl AppConfig

pub async fn load_from_dir( config_dir: impl AsRef<Path>, ) -> Result<AppConfig, ConfigError>

从配置目录加载所有配置文件

目录结构：

config/
├── app.yml
├── database.yml
├── cache.yml
├── addons.yml
├── log.yml
└── server.yml

pub fn apply_env_overrides(&mut self)

应用环境变量覆盖

支持以下环境变量格式：

1. SZ_DB_{CONN}_PASSWORD → database.connections.{conn}.password
2. SZ_DB_{CONN}_HOSTNAME → database.connections.{conn}.hostname
3. SZ_DB_{CONN}_HOSTPORT → database.connections.{conn}.hostport
4. SZ_APP__{KEY} → app.{key}（标准格式，未来扩展）

pub fn default_connection(&self) -> Option<&DatabaseConnection>

获取默认数据库连接

Trait Implementations

impl Clone for AppConfig

fn clone(&self) -> AppConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AppConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for AppConfig

fn default() -> AppConfig

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for AppConfig

fn deserialize<__D>( __deserializer: __D, ) -> Result<AppConfig, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.