iOS请求URL 中文转译-白红宇

URL转译 stringByAddingPercentEscapesUsingEncoding(只对 `#%^{}[]|"<> 加空格共14个字符编码，不包括”&?”等符号), ios9将淘汰。建议用stringByAddingPercentEncodingWithAllowedCharacters方法

//中文链接NSString *globalURL = [[NSString alloc]initWithFormat:@"http://127.0.0.1:%d/oa/workflow/submit/workflow?requestId=181193&userNumber=01281209&type=submit&remark=这是个什么鬼啊，这是个神",ListenPort];//iOS9.0废弃方法//NSString * encodingString = [globalURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];//转译后的链接NSString * encodingString = [globalURL stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];复制代码

stringByAddingPercentEncodingWithAllowedCharacters需要传一个

NSCharacterSet对象（关于 NSCharacterSet 文章说的很好）

如[NSCharacterSet URLQueryAllowedCharacterSet]

@interface NSCharacterSet (NSURLUtilities)// 预定义字符集用于六个URL组件和子组件，它们允许百分比编码。 - (nullable NSString *)stringByAddingPercentEncodingWithAllowedCharacters:(NSCharacterSet *)allowedCharacters// 包含URL用户子组件中允许的字符的字符集@property (class, readonly, copy) NSCharacterSet *URLUserAllowedCharacterSet API_AVAILABLE(macos(10.9), ios(7.0), watchos(2.0), tvos(9.0));// 包含URL密码子组件中允许的字符的字符集@property (class, readonly, copy) NSCharacterSet *URLPasswordAllowedCharacterSet API_AVAILABLE(macos(10.9), ios(7.0), watchos(2.0), tvos(9.0));// 包含URL的主机子组件中允许的字符的字符集@property (class, readonly, copy) NSCharacterSet *URLHostAllowedCharacterSet API_AVAILABLE(macos(10.9), ios(7.0), watchos(2.0), tvos(9.0));// 返回一个包含字符的字符集允许URL的路径组件。字符“;”是一种合法的路径,但是建议最好是percent-encoded兼容NSURL(-stringByAddingPercentEncodingWithAllowedCharacters:percent-encode任何‘;’字符如果你通过URLPathAllowedCharacterSet)@property (class, readonly, copy) NSCharacterSet *URLPathAllowedCharacterSet API_AVAILABLE(macos(10.9), ios(7.0), watchos(2.0), tvos(9.0));// 包含URL查询组件中允许的字符的字符集@property (class, readonly, copy) NSCharacterSet *URLQueryAllowedCharacterSet API_AVAILABLE(macos(10.9), ios(7.0), watchos(2.0), tvos(9.0));// 包含URL片段组件中允许的字符的字符集@property (class, readonly, copy) NSCharacterSet *URLFragmentAllowedCharacterSet API_AVAILABLE(macos(10.9), ios(7.0), watchos(2.0), tvos(9.0));@end编码字符范围URLFragmentAllowedCharacterSet  "#%<>[\]^`{|}URLHostAllowedCharacterSet      "#%/<>?@\^`{|}URLPasswordAllowedCharacterSet  "#%/:<>?@[\]^`{|}URLPathAllowedCharacterSet      "#%;<>?[\]^`{|}URLQueryAllowedCharacterSet     "#%<>[\]^`{|}URLUserAllowedCharacterSet      "#%/:<>?@[\]^`复制代码

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