[Java] Spring Boot中优雅的获取yml文件工具类

package com.common.base.utils.base;
import com.common.base.generator.resourcemanager;
import org.yaml.snakeyaml.yaml;
import java.io.inputstream;
import java.util.hashmap;
import java.util.map;
/**
 * yml文件工具类
 */
public class ymlutils {
  private static string bootstrap_file = "bootstrap.yml";
  private static map<string,string> result = new hashmap<>();
  /**
   * 根据文件名获取yml的文件内容
   * @return
   */
  public static map<string,string> getymlbyfilename(string file){
  result = new hashmap<>();
  if(file == null)
    file = bootstrap_file;
  inputstream in = resourcemanager.class.getclassloader().getresourceasstream(file);
  yaml props = new yaml();
  object obj = props.loadas(in,map.class);
  map<string,object> param = (map<string, object>) obj;
  for(map.entry<string,object> entry:param.entryset()){
    string key = entry.getkey();
    object val = entry.getvalue();
 
    if(val instanceof map){
    foreachyaml(key,(map<string, object>) val);
    }else{
    result.put(key,val.tostring());
    }
  }
  return result;
  }
  /**
   * 根据key获取值
   * @param key
   * @return
   */
  public static string getvalue(string key){
  map<string,string> map = getymlbyfilename(null);
  if(map==null)return null;
  return map.get(key);
  }
  /**
   * 遍历yml文件，获取map集合
   * @param key_str
   * @param obj
   * @return
   */
  public static map<string,string> foreachyaml(string key_str,map<string, object> obj){
  for(map.entry<string,object> entry:obj.entryset()){
    string key = entry.getkey();
    object val = entry.getvalue();
    string str_new = "";
    if(stringutils.isnotnull(key_str)){
    str_new = key_str+ "."+key;
    }else{
    str_new = key;
    }
    if(val instanceof map){
    foreachyaml(str_new,(map<string, object>) val);
    }else{
    result.put(str_new,val.tostring());
    }
  }
  return result;
  }
  /**
   * 获取bootstrap.yml的name
   * @return
   */
  public static string getapplicationname(){
  return getymlbyfilename(bootstrap_file).get("spring.application.name");
  }
  /**
   * 获取bootstrap.yml的name
   * @return
   */
  public static string getapplicationname1(){
  string name = getymlbyfilename(bootstrap_file).get("spring.application.name");
  return name + "center";
  }
  public static void main(string[] args) {
  system.out.println(getapplicationname());
  }
}