Ios 这本字典是零

我想解析一个本地json，我试着这样做，但是

testDict

是nil。有人能帮我吗

- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
    [self.searchResult removeAllObjects];
        NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:@"SELF contains[c] %@", searchText];
    NSString * firstLetter = [searchText substringWithRange:[searchText rangeOfComposedCharacterSequenceAtIndex:0]];

    NSError *err = nil;
    NSString *aux=@"english_";
    NSString *updated = [aux stringByAppendingString:firstLetter];

    NSString *dataPath = [[NSBundle mainBundle] pathForResource:updated ofType:@"json"];

    testDict = [NSJSONSerialization JSONObjectWithData:[NSData dataWithContentsOfFile:dataPath] options:kNilOptions error:&err];

Json看起来像这样：

"Caaba": "(n.) The small and nearly cubical stone building, toward which all Mohammedans must pray.",
   "Caas": "(n. sing. & pl.) Case.",
   "Cab": [
      "(n.) A kind of close carriage with two or four wheels, usually a public vehicle.",
      "(n.) The covered part of a locomotive, in which the engineer has his station.",
      "(n.) A Hebrew dry measure, containing a little over two (2.37) pints."
   ],

---

我正在检查是否是验证json，我使用了以下代码：

NSString *path = @"/Users/JohnApple/Desktop/myJsonFileForThisTest.json";
NSError *err;
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:[NSData dataWithContentsOfFile:path] options:kNilOptions error:&err];
NSLog(@"Here is the NSDicitonary if this worked --> %@",dict);
NSLog(@"Here is the NSError if it failed --> %@", err);

当我使用您在上面提供的Json数据时：

"Caaba": "(n.) The small and nearly cubical stone building, toward which all Mohammedans must pray.",
"Caas": "(n. sing. & pl.) Case.",
"Cab": [
  "(n.) A kind of close carriage with two or four wheels, usually a public vehicle.",
  "(n.) The covered part of a locomotive, in which the engineer has his station.",
  "(n.) A Hebrew dry measure, containing a little over two (2.37) pints."
],

我得到了这个错误：

无法读取数据，因为它的格式不正确。”（JSON文本没有以数组或对象开头，并且没有设置允许片段的选项

原来您的JSON格式不正确。若要修复JSON，请在文件中JSON的开头添加一个

{

，并在结尾添加一个

}

。 您可以通过检查查看JSON的格式是否正确。如果数据无效，则NSDIctionary将为空

将Json设置为正确格式后，以下数据显示正确：

{
    Caaba = "(n.) The small and nearly cubical stone building, toward which all Mohammedans must pray.";
    Caas = "(n. sing. & pl.) Case.";
    Cab =     (
        "(n.) A kind of close carriage with two or four wheels, usually a public vehicle.",
        "(n.) The covered part of a locomotive, in which the engineer has his station.",
        "(n.) A Hebrew dry measure, containing a little over two (2.37) pints."
    );
}

---

你能发布你试图解析的JSON吗？

err

告诉你什么？对我来说，这看起来根本不是一个有效的JSON。它不是有效的JSON：首先在这里检查你的JSON好吧，我猜JSON会返回一个字典，但你正在尝试使用一个

NSDictionary

。尝试对变量使用

NSArray

de>testDict