/**
* @功能描述:排序方法
* @author LJ
* 2018年10月29日 -下午2:38:15
*/
public class java_ListMapSort {
public static void main(String[] args) {
List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
Map<String, Object> map1 = new HashMap<String, Object>();
map1.put("name", "p");
map1.put("cj", "15");
Map<String, Object> map2 = new HashMap<String, Object>();
map2.put("name", "h");
map2.put("cj", "2");
Map<String, Object> map3 = new HashMap<String, Object>();
map3.put("name", "f");
map3.put("cj", "21");
list.add(map1);
list.add(map3);
list.add(map2);
//排序前
for (Map<String, Object> map : list) {
System.out.println(map.get("cj"));
}
Collections.sort(list, new Comparator<Map<String, Object>>() {
public int compare(Map<String, Object> o1, Map<String, Object> o2) {
Integer name1 = Integer.valueOf(o1.get("cj").toString()) ;//name1是从你list里面拿出来的一个
Integer name2 = Integer.valueOf(o2.get("cj").toString()) ; //name1是从你list里面拿出来的第二个name
return name1.compareTo(name2);
}
});
//排序后
System.out.println("-------------------");
for (Map<String, Object> map : list) {
System.out.println(map.get("cj"));
}
}
}
JAVA中对List<map<String,Object>>根据map某个key值从小到大顺序进行排序
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转载自my.oschina.net/u/3482619/blog/2253993
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