//判断是否为空
ObjectUtil.isNotNull
//判断集合是否为空
CollUtil.isNotEmpty()
hutool转换jsonobject
String jsonStr = "{\"b\":\"value2\",\"c\":\"value3\",\"a\":\"value1\"}";
//方法一：使用工具类转换
JSONObject jsonObject = JSONUtil.parseObj(jsonStr);
//方法二：new的方式转换
JSONObject jsonObject2 = new JSONObject(jsonStr);
//对象转换成json字符串
JSONUtil.toJsonStr()
//如果我们想获得格式化后的JSON
JSONUtil.toJsonPrettyStr(sortedMap);
//JSON字符串解析
String html = "{\"name\":\"Something must have been changed since you leave\"}";
JSONObject jsonObject = JSONUtil.parseObj(html);
jsonObject.getStr("name");
//XML字符串转换为JSON
String s = "<sfzh>123</sfzh><sfz>456</sfz><name>aa</name><gender>1</gender>";
JSONObject json = JSONUtil.parseFromXml(s);
json.get("sfzh");
json.get("name");
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//JSON转换为XML
final JSONObject put = JSONUtil.createObj()
.set("aaa", "你好")
.set("键2", "test");
// <aaa>你好</aaa><键2>test</键2>
final String s = JSONUtil.toXmlStr(put);
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//hutool转list
List<GradeInterfaceItem> interfaceItem = JSONUtil.toList(jsonArray.getJSONObject(i).getJSONArray("interfaceItem"), GradeInterfaceItem.class);
//JSON转Bean
我们先定义两个较为复杂的Bean（包含泛型）
@Data
public class ADT {
private List<String> BookingCode;
}
@Data
public class Price {
private List<List<ADT>> ADT;
}
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String json = "{\"ADT\":[[{\"BookingCode\":[\"N\",\"N\"]}]]}";
Price price = JSONUtil.toBean(json, Price.class);