fix weather bug

wangrong

2021-12-24 7ba218b08e9d70fb9173db5b4782f6f726df1fd2

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package com.example.demo.utils; 
 
import java.util.Comparator; 
 
public class MapKeyComparator implements Comparator<String> { 
      
        public int compare(String s1, String s2) { 
            return s1.compareTo(s2);  //从小到大排序 
 
} 
        }