SBJSON失去引號

Question

我使用SBJSON解析器解析的JSON響應：使用此代碼

{"status":0,"sessions":[{"name":"kldlksdklsdkl","active":false,"status":"saved","type":"web","key":"30228ee71f09b93aaa2d1738","contributor_id":"lance","created_at":"Mon May 02, 2011 02:35 PM","closed_at":"Mon May 02, 2011 02:46 PM"}{"name":"Blahieririe","active":false,"status":"saved","type":"web","key":"dbd2bbcc8681bba6a6532051","contributor_id":"lance","created_at":"Mon May 02, 2011 01:42 PM","closed_at":"Mon May 02, 2011 02:34 PM"},{"name":"Jim","active":false,"status":"saved","type":"web","key":"ec5bcf18356a29bb4490841f","contributor_id":"lance","created_at":"Fri April 29, 2011 02:37 PM","closed_at":"Fri April 29, 2011 02:38 PM"}]} 

從服務器：

NSArray *sessionsArray = [dictionary objectForKey:@"sessions"]; 
    NSArray *tempArray = [[NSArray alloc] init]; 
    for(NSString *item in sessionsArray){ 
     NSLog(@"Session Found: \'%@\'",item); 

     NSDictionary *myDictionary = [item JSONValue]; 
    } 

我碰到一個不錯的陣列我JSON，但當我試圖把每一塊放入一個NSDictionary，它給了我一個例外，我NSLoged它，並發現引號正在從一些鍵和/或值被刪除如下所示：

{ 
active = 1; 
"contributor_id" = lance; 
"created_at" = "Mon May 02, 2011 03:26 PM"; 
key = e10e5feeea3425ae213cb4cc; 
name = "JSON TEST"; 
status = active; 
type = web; 
} 

它是JSON解析器中的錯誤嗎？還是我在做一些愚蠢的事情？

Answer 1

引號不是'被刪除'。

在JSON中，每個字符串都被引用，但引號本身不是字符串的一部分。例如，如果你寫

NSArray *sessionsArray = [dictionary objectForKey:@"sessions"]; 
NSDictionary *session = [sessionArray objectAtIndex:0]; 
NSString sessionName = [session objectForKey:@"name"]; 

對應的會話名稱將不會顯示帶引號。

當NSLog()字典或陣列，可可使用NeXTSTEP的屬性列表格式來表示辭典/陣列。在這種格式下，如果值是簡單的單詞，則引號是可選的。

這就是說，你應該列舉這些JSON數據如下：

NSString *jsonString = …; 
NSDictionary *jsonResult = [jsonString JSONValue]; 
NSArray *sessionsArray = [jsonResult objectForKey:@"sessions"]; 
for (NSDictionary *session in sessionArray) { 
    NSString *sessionName = [session objectForKey:@"name"]; 
    BOOL sessionActive = [[session objectForKey:@"active"] boolValue]; 
    NSString *sessionStatus = [session objectForKey:@"status"]; 
    … 
}