Twitter 错误 401 - 我应该如何处理感叹号? [英] twitter error 401 - What should I do with the exclamation mark?

问题描述

我在使用 Oauth 和 twitter api ver1.1 时遇到问题.当我的应用程序将某些内容发布到另一个网站时，它会在 Twitter 上发布一条帖子.但是当帖子正文包含感叹号 ('!') 时，我收到 twitter 401 错误，即未经授权".我在谷歌上搜索，发现它可能与Oauth有关.有些人说！"必须编码为%21".我试过了，但是当我发推文！"到 twitter，我只得到了 '%21' 而不是 '!'本身.我如何编码！"正确吗?

I have a problem with Oauth and twitter api ver1.1. My app will tweet a post to twitter when post something to another site. But when the post body contains exclamation mark ('!'), I get twitter 401 error that is 'Unauthorized'. I searched on google, and found that it may related to Oauth. Some people says that the '!' must be encoded to '%21'. I tried it, but when I tweet '!' to twitter, I just got '%21' but not '!' itself. How can I encode the '!' correctly?

推荐答案

您必须使用此类别对推文进行编码

you must encode your tweet with this category

#import "NSString+URLEncoding.h"
@implementation NSString (OAURLEncodingAdditions)

- (NSString *)URLEncodedString 
{
    NSString *result = (NSString *)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,
                                                                       (CFStringRef)self,
                                                                       NULL,
                                                                       CFSTR("!*'();:@&=+$,/?%#[]"),
                                                                       kCFStringEncodingUTF8);
    [result autorelease];
    return result;
}

- (NSString*)URLDecodedString
{
    NSString *result = (NSString *)CFURLCreateStringByReplacingPercentEscapesUsingEncoding(kCFAllocatorDefault,
                                                                                       (CFStringRef)self,
                                                                                       CFSTR(""),
                                                                                       kCFStringEncodingUTF8);
    [result autorelease];
    return result;  
}

@end

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