Question

读取此文件city.list.us.json.gz（未压缩）会收到错误（3840）：

    NSString * path = [mb pathForResource:@"city.list.us" ofType:@"json" inDirectory:@"JSON"];
    NSString * string = [NSString stringWithContentsOfUTF8File:path];
    NSData * data = [string dataUsingEncoding:NSASCIIStringEncoding];
    NSLog(@"isValidJSONObject:%@", [NSJSONSerialization isValidJSONObject:data] ? @"Yes" : @"No");
    NSError * bobo = nil;
    id blob = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&bobo];
    [NSApp presentError:bobo];

读取ok - 长度1873878字节，在vi（set list）中看起来没问题，但不会产生非零对象。

文件的头部-4显示：

{"_id":4070245,"name":"Jones Crossroads","country":"US","coord":{"lon":-85.484657,"lat":31.21073}}
{"_id":4344544,"name":"Vernon Parish","country":"US","coord":{"lon":-93.183502,"lat":31.11685}}
{"_id":4215307,"name":"Pennick","country":"US","coord":{"lon":-81.55899,"lat":31.313}}
{"_id":5285039,"name":"Black Bear Spring","country":"US","coord":{"lon":-110.288139,"lat":31.386209}}

对于我的非专家JSON眼睛，它似乎是一个引用文件，每行有一个对象，有4个值（_id，name，country，coord），最后一个包含2个值的对象（lat，lon）。

还尝试了NSASCIIStringEncoding进行NSData转换，但没有任何乐趣。

有什么想法吗？

Answer 1

那是无效的JSON。它是大量的JSON词典，但它们彼此无关。

很可能预期的JSON（字典数组）应该看起来像

[{"_id":4070245,"name":"Jones Crossroads","country":"US","coord":{"lon":-85.484657,"lat":31.21073}},
{"_id":4344544,"name":"Vernon Parish","country":"US","coord":{"lon":-93.183502,"lat":31.11685}},
{"_id":4215307,"name":"Pennick","country":"US","coord":{"lon":-81.55899,"lat":31.313}},
{"_id":5285039,"name":"Black Bear Spring","country":"US","coord":{"lon":-110.288139,"lat":31.386209}}]

我将整个文本包装在方括号[]中，并在每行的末尾添加逗号。

JSON文件读取3840错误

1 个答案: