private FileConfiguration config;

    saveDefaultConfig();//创建config.yml文件
    this.config = getConfig();
    this.config.set("version", getDescription().getVersion());//设置版本号
    
    Map<String, Object> options = new HashMap();//建立默认参数数组
    options.put("disable-all", Boolean.valueOf(false));//4个默认参数
    options.put("timeout", Integer.valueOf(60));
    options.put("max-devices", Integer.valueOf(20));
    options.put("worlds", Arrays.asList(new String[] { "plotworld" }));//带数组的默认参数
    boolean set = false;//保存设置初始阀值
    for (Map.Entry<String, Object> node : options.entrySet()) {
      if (!this.config.contains((String)node.getKey()))
      {//循环检查是否每个配置参数齐全, 任何一个不齐全, 则采用默认参数.
        set = true;
        this.config.set((String)node.getKey(), node.getValue());
      }
    }
    if (set) {//只要有set=true,就进行config文件保存
      saveConfig();
    }
    this.maxDevices = this.config.getInt("max-devices");
    this.timeout = this.config.getInt("timeout");
    this.disableAll = this.config.getBoolean("disable-all");
    this.enabledWorlds = new HashSet(this.config.getStringList("worlds"));