java JSONArray 遍历方式(2种)

public static void main(String[] args) {
    
    JSONArray jSONArray = new JSONArray();
    JSONObject jb = new JSONObject();
    jb.put("id", 1);
    jb.put("name", "s");
    jSONArray.add(jb);
    JSONObject j1 = new JSONObject();
    j1.put("id", 2);
    j1.put("name", "s");
    jSONArray.add(j1);
    StringBuffer sBuffer = new StringBuffer();
    jSONArray.stream().forEach(jsonobejct->arrayIdToString((JSONObject) jsonobejct,sBuffer));
    System.out.println(sBuffer.toString());
  }

  private static StringBuffer arrayIdToString(JSONObject jsonobejct,
      StringBuffer sBuffer) {
    return sBuffer.append(jsonobejct.getInteger("id")).append(",");
  }

public static void f2(JSONArray ja) {
    for(int i=0;i<ja.size();i++) {
      System.out.println(ja.getJSONObject(i).get("id"));
    }
  }

SONObject jsonObject = new JSONObject(s);

JSONObject jsonObject = new JSONObject(jsonString);
    Iterator iterator = jsonObject.keys();
while(iterator.hasNext()){
      key = (String) iterator.next();
    value = jsonObject.getString(key);
}