import java.util.ArrayList; import java.util.Collection; import java.util.HashMap; import java.util.List; import java.util.Map; import org.apache.commons.collections.CollectionUtils; import net.sf.json.JSONArray; public class test1 { public static void main(String[] args) { String jsonstr="[{'day':'2017-2-22','status':'1'},{'day':'2017-2-16','status':'0'},{'day':'2017-2-25','status':'1'}]"; JSONArray array = JSONArray.fromObject(jsonstr); List array2 =(ArrayList)JSONArray.toCollection(array, HashMap.class); System.out.println(array2); } }