सेल्सफोर्स में JSON ऑब्जेक्ट को पार्सिंग एपेक्स

Question

मैं एक जेसन ऑब्जेक्ट को कैसे पार्स कर सकता हूं जो एपेक्स में दिए गए प्रारूप में है?

मुझे आईडी विशेषता वाले आइटम सरणी से सूची < स्ट्रिंग> की आवश्यकता है। कुछ उपयुक्त विधि क्या है?

यह पार्स करने के लिए, मैं कोड के साथ एक वर्ग बनाने का प्रयास करें:

public class JSON2Apex { 

    public class Items { 
     public String kind; 
     public String etag; 
     public String id; 
     public String status; 
     public String htmlLink; 
     public String created; 
     public String updated; 
     public String summary; 
     public String description; 
     public String location; 
     public Creator creator; 
     public Creator organizer; 
     public Start start; 
     public Start end; 
     public String iCalUID; 
     public Integer sequence; 
     public Reminders reminders; 
    } 

    public class Reminders { 
     public Boolean useDefault; 
    } 

    public class Start { 
     public String dateTime; 
    } 

    public class Creator { 
     public String email; 
     public String displayName; 
     public Boolean self; 
    } 

    public String kind; 
    public String etag; 
    public String summary; 
    public String updated; 
    public String timeZone; 
    public String accessRole; 
    public List<DefaultReminders> defaultReminders; 
    public List<Items> items; 

    public class DefaultReminders { 
     public String method; 
     public Integer minutes; 
    } 

} 

लेकिन इस वर्ग में यह कुछ आरक्षित कीवर्ड दिखाया जा रहा है अंत की तरह उपयोगकर्ता DATETIME, आदि, ताकि आगे इस दृष्टिकोण के साथ आगे नहीं बढ़ सकता है ।

{ 
    "kind": "calendar#events", 
    "etag": "\"ZrhdJMCgpoUK_a5fT7XOC6xn46g/jAScaUzsyk9nbyyvTc1Wa3-tulA\"", 
    "summary": "riteshmehandiratta@gmail.com", 
    "updated": "2013-02-16T16:23:20.057Z", 
    "timeZone": "Asia/Calcutta", 
    "accessRole": "owner", 
    "defaultReminders": [ 
     { 
      "method": "email", 
      "minutes": 10 
     }, 
     { 
      "method": "popup", 
      "minutes": 10 
     } 
    ], 
    "items": [ 
     { 
      "kind": "calendar#event", 
      "etag": "\"ZrhdJMCgpoUK_a5fT7XOC6xn46g/Z2NhbDAwMDAxMzU2MTQ1NTg1NjYxMDAw\"", 
      "id": "ngo4lfq6q7c4dm8bej7m47e5lc", 
      "status": "confirmed", 
      "htmlLink": "https://www.google.com/calendar/event?eid=bmdvNGxmcTZxN2M0ZG04YmVqN200N2U1bGMgcml0ZXNobWVoYW5kaXJhdHRhQG0", 
      "created": "2012-12-22T03:04:01.000Z", 
      "updated": "2012-12-22T03:06:25.661Z", 
      "summary": "hello", 
      "description": "hgjgjh", 
      "location": "hkhkhk", 
      "creator": { 
       "email": "riteshmehandiratta@gmail.com", 
       "displayName": "RITESH MEHANDIRATTA", 
       "self": true 
      }, 
      "organizer": { 
       "email": "riteshmehandiratta@gmail.com", 
       "displayName": "RITESH MEHANDIRATTA", 
       "self": true 
      }, 
      "start": { 
       "dateTime": "2013-01-01T10:00:00+05:30" 
      }, 
      "end": { 
       "dateTime": "2013-01-15T00:00:00+05:30" 
      }, 
      "iCalUID": "ngo4lfq6q7c4dm8bej7m47e5lc@google.com", 
      "sequence": 1, 
      "reminders": { 
       "useDefault": true 
      } 
     }, 
     { 
      "kind": "calendar#event", 
      "etag": "\"ZrhdJMCgpoUK_a5fT7XOC6xn46g/Z2NhbDAwMDAxMzYxMDMxNTg1OTYzMDAw\"", 
      "id": "oap7nr7ukjug6euo24kvhmfbm0", 
      "status": "confirmed", 
      "htmlLink": "https://www.google.com/calendar/event?eid=b2FwN25yN3VranVnNmV1bzI0a3ZobWZibTAgcml0ZXNobWVoYW5kaXJhdHRhQG0", 
      "created": "2013-02-16T16:19:45.000Z", 
      "updated": "2013-02-16T16:19:45.963Z", 
      "summary": "Hello World", 
      "creator": { 
       "email": "riteshmehandiratta@gmail.com", 
       "displayName": "RITESH MEHANDIRATTA", 
       "self": true 
      }, 
      "organizer": { 
       "email": "riteshmehandiratta@gmail.com", 
       "displayName": "RITESH MEHANDIRATTA", 
       "self": true 
      }, 
      "start": { 
       "dateTime": "2013-02-11T11:00:00+05:30" 
      }, 
      "end": { 
       "dateTime": "2013-02-11T12:00:00+05:30" 
      }, 
      "iCalUID": "oap7nr7ukjug6euo24kvhmfbm0@google.com", 
      "sequence": 0, 
      "reminders": { 
       "useDefault": true 
      } 
     }, 
     { 
      "kind": "calendar#event", 
      "etag": "\"ZrhdJMCgpoUK_a5fT7XOC6xn46g/Z2NhbDAwMDAxMzYxMDMxNjQxMDYzMDAw\"", 
      "id": "k2mvqecqdgoudt6fl4e5hhqna0", 
      "status": "confirmed", 
      "htmlLink": "https://www.google.com/calendar/event?eid=azJtdnFlY3FkZ291ZHQ2Zmw0ZTVoaHFuYTAgcml0ZXNobWVoYW5kaXJhdHRhQG0", 
      "created": "2013-02-16T16:20:41.000Z", 
      "updated": "2013-02-16T16:20:41.063Z", 
      "summary": "Hello Wol", 
      "creator": { 
       "email": "riteshmehandiratta@gmail.com", 
       "displayName": "RITESH MEHANDIRATTA", 
       "self": true 
      }, 
      "organizer": { 
       "email": "riteshmehandiratta@gmail.com", 
       "displayName": "RITESH MEHANDIRATTA", 
       "self": true 
      }, 
      "start": { 
       "dateTime": "2013-02-11T13:00:00+05:30" 
      }, 
      "end": { 
       "dateTime": "2013-02-11T14:00:00+05:30" 
      }, 
      "iCalUID": "k2mvqecqdgoudt6fl4e5hhqna0@google.com", 
      "sequence": 0, 
      "reminders": { 
       "useDefault": true 
      } 
     }, 
     { 
      "kind": "calendar#event", 
      "etag": "\"ZrhdJMCgpoUK_a5fT7XOC6xn46g/Z2NhbDAwMDAxMzYxMDMxNjUyNDE1MDAw\"", 
      "id": "0n2if07oo9pvfdnf7f0a6cldns", 
      "status": "confirmed", 
      "htmlLink": "https://www.google.com/calendar/event?eid=MG4yaWYwN29vOXB2ZmRuZjdmMGE2Y2xkbnMgcml0ZXNobWVoYW5kaXJhdHRhQG0", 
      "created": "2013-02-16T16:20:52.000Z", 
      "updated": "2013-02-16T16:20:52.415Z", 
      "summary": "Hello World1", 
      "creator": { 
       "email": "riteshmehandiratta@gmail.com", 
       "displayName": "RITESH MEHANDIRATTA", 
       "self": true 
      }, 
      "organizer": { 
       "email": "riteshmehandiratta@gmail.com", 
       "displayName": "RITESH MEHANDIRATTA", 
       "self": true 
      }, 
      "start": { 
       "dateTime": "2013-02-11T15:30:00+05:30" 
      }, 
      "end": { 
       "dateTime": "2013-02-11T16:30:00+05:30" 
      }, 
      "iCalUID": "0n2if07oo9pvfdnf7f0a6cldns@google.com", 
      "sequence": 0, 
      "reminders": { 
       "useDefault": true 
      } 
     }, 
     { 
      "kind": "calendar#event", 
      "etag": "\"ZrhdJMCgpoUK_a5fT7XOC6xn46g/Z2NhbDAwMDAxMzYxMDMxNzcwNDMzMDAw\"", 
      "id": "r365lrv775bqjiplmaqjro9grc", 
      "status": "confirmed", 
      "htmlLink": "https://www.google.com/calendar/event?eid=cjM2NWxydjc3NWJxamlwbG1hcWpybzlncmMgcml0ZXNobWVoYW5kaXJhdHRhQG0", 
      "created": "2013-02-16T16:22:50.000Z", 
      "updated": "2013-02-16T16:22:50.433Z", 
      "creator": { 
       "email": "riteshmehandiratta@gmail.com", 
       "displayName": "RITESH MEHANDIRATTA", 
       "self": true 
      }, 
      "organizer": { 
       "email": "riteshmehandiratta@gmail.com", 
       "displayName": "RITESH MEHANDIRATTA", 
       "self": true 
      }, 
      "start": { 
       "dateTime": "2013-02-11T14:30:00+05:30" 
      }, 
      "end": { 
       "dateTime": "2013-02-11T15:30:00+05:30" 
      }, 
      "iCalUID": "r365lrv775bqjiplmaqjro9grc@google.com", 
      "sequence": 0, 
      "reminders": { 
       "useDefault": true 
      } 
     } 
    ] 
} 

Answer 1

आप सादे वस्तु/सूची/नक्शा वस्तुओं में JSON के साथ काम करने deserializeUntyped फ़ंक्शन का उपयोग कर सकते हैं। आपको केवल अपेक्षित प्रकार (जैसे आप जावा में करेंगे) में सब कुछ डालने के लिए याद रखना होगा। तो प्रत्येक आइटम की आईडी क्षेत्र तक पहुँचने के लिए, तुम क्या चाहते हैं

public void parse() { 
    Map<String, Object> root = (Map<String, Object>)JSON.deserializeUntyped(getJsonToParse()); 
    List<Object> items = (List<Object>)root.get('items'); 
    for (Object item : items) { 
     Map<String, Object> i = (Map<String, Object>)item; 
     System.debug(i.get('id')); 
    } 
} 

जो इस डिबग आउटपुट उत्पन्न करता है: