iOS-将网址上的参数保存为字典

- (NSMutableDictionary *)getParams:(NSString *)str
{
    NSMutableDictionary *dict = [NSMutableDictionary dictionary];
    NSArray *item = [str componentsSeparatedByString:@"&"];
    for (NSString *param in item) {
        NSArray *paramArray = [param componentsSeparatedByString:@"="];
        [dict setObject:[NSString stringWithFormat:@"%@", paramArray[1]] forKey:paramArray[0]];
    }
    return dict;
}