通过界面无法添加不同组相同键的配置项

[bingBird]

经排查是添加逻辑中没有添加配置时候组过滤没起效引起的，具体代码段为:src/AgileConfig.Server.Service/ConfigService.cs下的150-160行代码引起

 if (string.IsNullOrEmpty(group))
        {
            Expression<Func<Config, bool>> exp1 = c => c.Group == "" || c.Group == null;
            exp.And(exp1);
        }
        else
        {
            Expression<Func<Config, bool>> exp1 = c => c.Group == group;
            exp.And(exp1);
        }

需要修改为：

 if (string.IsNullOrEmpty(group))
 {
     Expression<Func<Config, bool>> exp1 = c => c.Group == "" || c.Group == null;
     exp = exp.And(exp1);
 }
 else
 {
     Expression<Func<Config, bool>> exp1 = c => c.Group == group;
     exp = exp.And(exp1);
 }