SBJSON失去引号

Question

我使用SBJSON解析器解析的JSON响应：使用此代码

{"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"}]} 

从服务器：

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

     NSDictionary *myDictionary = [item JSONValue]; 
    } 

我碰到一个不错的阵列我JSON，但当我试图把每一块放入一个NSDictionary，它给了我一个例外，我NSLoged它，并发现引号正在从一些键和/或值被删除如下所示：

{ 
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解析器中的错误吗？还是我在做一些愚蠢的事情？

Answer 1

引号不是'被删除'。

在JSON中，每个字符串都被引用，但引号本身不是字符串的一部分。例如，如果你写

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

对应的会话名称将不会显示带引号。

当NSLog()字典或阵列，可可使用NeXTSTEP的属性列表格式来表示辞典/阵列。在这种格式下，如果值是简单的单词，则引号是可选的。

这就是说，你应该列举这些JSON数据如下：

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"]; 
    … 
}