解决方法：
String jsonString = "[{"plateNumber":"1","holeNumber":"A02","qcType":"L","value":"2.36"}",{"plateNumber":"1","holeNumber":"A03","qcType":"M","value":"5.36"}]";
List<QcPlate> listQcPlate = new ArrayList<QcPlate>();
listQcPlate = JSON.parseArray(jsonString, QcPlate.class);