springboot解析复杂配置

野性酷女 2023-07-02 10:22 0阅读 0赞

在springboot项目开发过程中经常需要定义一些复杂配置，且该配置还可以动态扩展，现在介绍一种复杂配置加载方式，如下面的配置：

system:
      scenes: aaaa,bbbb
      aaaa:
        name: "场景1"
        sql: "select * from tableA"
        keys:
          - "11:22"
          - "11:22"
      bbbb:
        name: "场景2"
        sql: "select * from tableB"
        keys:
          - "device:device"
          - "mba:mba"

如果配置是这样，则可以定义一个key的字符串列表

import com.alibaba.fastjson.JSON;
    import lombok.Data;
    import lombok.extern.slf4j.Slf4j;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.boot.context.properties.bind.Bindable;
    import org.springframework.boot.context.properties.bind.Binder;
    import org.springframework.cloud.context.config.annotation.RefreshScope;
    import org.springframework.context.EnvironmentAware;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.core.env.Environment;
    
    import java.util.concurrent.ConcurrentHashMap;
    
    /**
     * @Description:
     */
    @Slf4j
    @Configuration
    @RefreshScope
    @Data
    public class SceneConfig implements EnvironmentAware {
        @Value("${system.scenes}")
        private String scenesPrefixs;
    
        private ConcurrentHashMap<String,SceneProperties> sceneConfig=new ConcurrentHashMap<>();
    
        public SceneProperties getSceneProperties(String scene){
            try{
                return sceneConfig.get(scene).clone();
            }catch (Exception e){
                return null;
            }
        }
        @Override
        @RefreshScope
        public void setEnvironment(Environment environment) {
            initSceneConfig(environment);
        }
    
        private void initSceneConfig(Environment env) {
            log.info("scenesPrefixs:{}",scenesPrefixs);
            Binder binder = Binder.get(env); //绑定简单配置
            for (String scPrefix : scenesPrefixs.split(",")) {
                SceneProperties param=binder.bind("system." + scPrefix.toLowerCase(), Bindable.of(SceneProperties.class)).get();
                param.setBussinessId(scPrefix);
                sceneConfig.put(scPrefix,param);
            }
        }
    }