import org.json.JSONObject; import org.json.JSONArray; public class Main { public static void main(String[] args) { String jsonString = "{\"key\": \"value\"}"; JSONObject jsonObject = new JSONObject(jsonString); JSONArray jsonArray = jsonObject.optJSONArray("key"); if (jsonArray ...
注意:在hutool的JSONUtil中,你可以使用getStr方法来安全地获取字符串值,如果值为null,则默认返回空字符串。同样,对于其他类型(如整数、布尔值等),JSONUtil也提供了相应的方法来安全地获取值。
问Java JSONObject.getJSONArray总是返回nullEN好的，这就是解决方案。不要信任org.json。*使用Gson：...
+ " \"reserve3\": \"reserve3:3\",\n" + " \"reserve4\": null,\n" + " \"reserve5\": null\n" + " }]\n" + "}";//将字符串转换为了对象JSONObject jo =JSON.parseObject(a);//获取data对象 data的对象为[],所以要转化为JSONArray类型的对象JSONArray data = jo.getJSONArray("dat...
if this array has no value at index, or if that value is the null reference. This method returns normally if the value is JSONObject#NULL. Remarks Returns the value at index. Java documentation for org.json.JSONArray.get(int). Portions of this page are modifications based on work created...
if this array has no value at index, or if that value is the null reference. This method returns normally if the value is JSONObject#NULL. Remarks Returns the value at index. Java documentation for org.json.JSONArray.get(int). Portions of this page are modifications based on work created...
[Android.Runtime.Register("get","(I)Ljava/lang/Object;","GetGet_IHandler")]publicvirtualJava.Lang.Object? Get (intindex); Parameters index Int32 Returns Object Attributes RegisterAttribute Exceptions JSONException if this array has no value atindex, or if that value is thenullreference. This...
this.specName = specName == null ? null : specName.trim(); } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 而TbSpecificationOption中有optionName和orders两个属性,也同样创建出来 {“optionName”:“test11”,“orders”:111} ...
@Override public Result queryShopByType(Integer typeId, Integer current, Double x, Double y) { // 1.判断是否需要根据坐标查询 if (x == null || y == null) { // 不需要坐标查询,按数据库查询 Page<Shop> page = query() .eq("type_id", typeId) .page(new Page<>(current, SystemConstan...
if this array has no value atindex, or if that value is thenullreference. This method returns normally if the value isJSONObject#NULL. Returns the value atindex. Java documentation fororg.json.JSONArray.get(int). Portions of this page are modifications based on work created and shared by ...