读取JSON文件并显示其内容

我的Unix机器上有test.json文件，其数据如下

{ "recordId" :10, "recordName" : "RECORDS", "records" : [ { "field1" : 111, "titleField" : 1, "titleIDMap" : null, "titleId" : 500, "titleStartDate" : "2013-12-22T00:00:00.000+0000", "titleEndDate" : "2013-12-03T00:00:00.000+0000", "languageId" : 20 }] } 

现在我正在编写REST jersey客户端来读取test.json并显示如下输出

 public class RestWebServiceClient { private static String BASE_URL="https://myUrl.com"; public static void main(String[] args) { JSONParser parser = new JSONParser(); final String auth = "mfndfkndfkdnfkdnfdkfndkfndfkndkfndzxzxzxz=="; try { Object obj = parser.parse(new FileReader("/home/user/test.json")); JSONObject jsonObject = (JSONObject) obj; final String postData = "dataTobePosted"; final String postResult = postJSONData(auth, BASE_URL+"/search",postData); System.out.println("\n============postResponse============"); System.out.println(postResult); JSONObject issueObj = new JSONObject(postResult); } catch (AuthenticationException e){ System.out.println("Username or Password wrong!"); e.printStackTrace(); } catch (JSONException e) { System.out.println("Invalid JSON output"); e.printStackTrace(); } catch (ClientHandlerException e) { System.out.println("Error invoking REST method"); e.printStackTrace(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } } private static String postJSONData(String auth, String url, String data) throws AuthenticationException, ClientHandlerException{ Client client = Client.create(); WebResource webResource = client.resource(url); ClientResponse response = webResource.header("Authorization", "Basic " + auth).type("application/json") .accept("application/json").post(ClientResponse.class, data); int statusCode = response.getStatus(); if (statusCode == 401) { throw new AuthenticationException("Invalid Username or Password"); } return response.getEntity(String.class); } 

我如何阅读test.json并显示其内容？

Answer 1

对于recordId ：

 JSONObject jsonObject = (JSONObject) obj; String name = (String) jsonObject.get("recordId"); System.out.println(name); 

records ：

  List list = new ArrayList(); JSONArray jsonList = jsonObject.getJSONArray("records"); for (int i = 0; i < jsonList.length(); i++) list.add(jsonList.getString(i)); 

您的records数据将在list对象中