Java 读取 Yml 配置到 Map 的工具类

• 依赖包
• 工具类封装
• 测试用YML文件
• 测试结果

    org.yaml
    snakeyaml
    1.30

package com.demo.utils;

import org.springframework.util.CollectionUtils;
import org.yaml.snakeyaml.Yaml;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.Map;
import java.util.Stack;
import java.util.concurrent.ConcurrentHashMap;
import java.util.stream.Collectors;


public class YamlUtil {


    public static void main(String[] args) throws FileNotFoundException {

        String path = "C:\Users\Administrator\Desktop\yml\application.yml";

        File file = new File(path);

        Map map = null;

        if (file.exists()){

            InputStream inputStream = new FileInputStream(file);

            Yaml yaml = new Yaml();

            map = yaml.load(inputStream);
        }

        Map yml = new ConcurrentHashMap<>(16);

        if (!CollectionUtils.isEmpty(map)){
            getVal(new Stack<>(),map,yml);
        }

        yml.forEach((k,v)->{
            System.out.println(k + ":" + v);
        });
    }

    
    public static void getVal(Stack stack,Map map,Map yml){
        for (String key:map.keySet()){
            Object tmp = map.get(key);
            stack.add(key);
            if (tmp instanceof Map){
                getVal(stack,(Map)tmp,yml);
            }else {
                yml.put(stack.stream().collect(Collectors.joining(".")),tmp);
                stack.pop();
            }
        }
        if (!stack.isEmpty()){
            stack.pop();
        }
    }

}

## 开发环境
spring:
  profiles:
    active: 1
    dev: 2
    https:
      timeout: 3000
    
  netty: 4
  
server:
  port: 8078

Connected to the target VM, address: '127.0.0.1:63707', transport: 'socket'
Java HotSpot(TM) 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended
spring.netty:4
spring.profiles.dev:2
spring.profiles.active:1
server.port:8078
spring.profiles.https.timeout:3000
Disconnected from the target VM, address: '127.0.0.1:63707', transport: 'socket'

Process finished with exit code 0