使用Java访问json对象中的列表

摩西·恩詹加（Moses N. Njenga）

我在json字符串下面，想使用Java访问AlsoKnownAs列表。我可以使用getString作为名称，我也尝试过将getJSONArray用于alsoKnownAs，但是使用起来不太方便

{\"name\":\"moses\",\"alsoKnownAs\":[\"njai\", \"njenga\",\"musa\"]}

我可以按如下方式访问名称，但不能使用等效的getString方法来返回字符串列表或等效于getJSONArray的字符串列表

    public static Person parsePersonJson(String json) {

            JSONObject currentPerson;
            String name;

            try {
                currentPerson = new JSONObject(json);

                // so I can access the name like

                name = currentPerson.getString("name");

               //I was trying this to get the list but figure out I was using a list of json objects, so not how to get the list of stings

           JSONArray arrayKnownAs = names.getJSONArray("alsoKnownAs");
                List<String> alsoKnownAs= new ArrayList<>();

                for (int i = 0, l = arrayKnownAs.length(); i < l; i++) {
                    String origin;
                    origin = arrayKnownAs[i];
                    alsoKnownAs.add(origin);
                }



               Person thisPerson =  new Person(

                //I instantiate person object here

                );
                return thisPerson;

            } catch (org.json.JSONException e) {
    // error
            }
            return null;
        }

摩西·恩詹加（Moses N. Njenga）

如果有人被卡在这里，原来我走在正确的轨道上，我可以使用getJSONArray访问List，但是当对每个成员进行迭代时，我都使用getString

 public static Person parsePersonJson(String json) {

            JSONObject currentPerson;
            String name;

            try {
                currentPerson = new JSONObject(json);

                // so I can access the name like

                name = currentPerson.getString("name");

                List<String> alsoKnownAs= new ArrayList<>();

                //use getJSONArray to get the list

                JSONArray arrayKnownAs = currentPerson.getJSONArray("alsoKnownAs");

                for (int i = 0, l = arrayKnownAs.length(); i < l; i++) {

                 //This is where I was getting it wrong, i needed to use getString to access list items

                  alsoKnownAs.add(arrayKnownAs.getString(i));
                   }



               Person thisPerson =  new Person(

                //I instantiate person object here

                );
                return thisPerson;

            } catch (org.json.JSONException e) {
             // error
            }
            return null;
        }

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