Json字符串与字典对象的相互转化

Json字符串转对象：

    NSString *jsonStringSource = @"{\"name\":\"张三\",\"age\":\"10\"}";

    NSData *jsonDataSource = [jsonStringSource dataUsingEncoding:NSUTF8StringEncoding];

    NSError *error;

    NSDictionary *jsonObj = [NSJSONSerialization JSONObjectWithData:jsonDataSource options:NSJSONReadingAllowFragments error:&error];

字典对象转Json字符串：

    NSData *jsonDataTarget = [NSJSONSerialization dataWithJSONObject:d options:NSJSONWritingPrettyPrinted error:&error];

    NSString *jsonStringTarget = [[NSString alloc]initWithData:jsonDataTarget encoding:NSUTF8StringEncoding];

数据结果据如下：