iOS 从网络获取json数据的系统方法

iOS 从网络获取son并解析

 

NSString* GXURL = PURL;

GXURL = [GXURL stringByAppendingString:@"/index.php/Api/android_getRankByShow/eid/521"],GXURL;

NSURL* url = [NSURL URLWithString:GXURL];

NSString* gongxian = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];

NSData * data = [gongxian dataUsingEncoding:NSUTF8StringEncoding];//将string 转换成 NSdata

NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];//将 NSdata转换成 字典