NSMutableDictionary *dic = [[NSMutableDictionary alloc] init];
[dic setValue:@"标签内容" forKey:@"content"];
[dic setValue:@257 forKey:@"x"];
[dic setValue:@264 forKey:@"y"];
NSMutableArray *array = [[NSMutableArray alloc] initWithObjects:dic, nil];
NSMutableDictionary *endDic = [[NSMutableDictionary alloc] init];
[endDic setValue:array forKey:@"tagInfosList"];
NSData *data = [NSJSONSerialization dataWithJSONObject:endDic options:NSJSONWritingPrettyPrinted error:nil];
NSString *jsonString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"转化为json %@",jsonString);
/*
{
"tagInfosList" : [
{
"content" : "标签内容",
"x" : 257,
"y" : 264
}
]
}
*/