URL 编码 iOS
废弃的方法1：
NSString *aa = [@"http://URL..." stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
废弃的方法2：
- (NSString *)encodeParameter:(NSString *)originalPara {
CFStringRef encodeParaCf = CFURLCreateStringByAddingPercentEscapes(NULL, (__bridge CFStringRef)originalPara, NULL, CFSTR("!*'();:@&=+$,/?%#[]"), kCFStringEncodingUTF8);
NSString *encodePara = (__bridge NSString *)(encodeParaCf);
CFRelease(encodeParaCf);
return encodePara;
}
正确方法
- (void)testURL {
NSString *charactersToEscape = @"&?=";
NSCharacterSet *allowedCharacters = [[NSCharacterSet characterSetWithCharactersInString:charactersToEscape] invertedSet];
/**
使用预置的，如果不能满足要求，则使用自定义characterSetWithCharactersInString
NSCharacterSet *allowedCharacters = [NSCharacterSet URLHostAllowedCharacterSet];
URLHostAllowedCharacterSet "#%/<>?@\^`{|}
URLFragmentAllowedCharacterSet "#%<>[\]^`{|}
URLPasswordAllowedCharacterSet "#%/:<>?@[\]^`{|}
URLPathAllowedCharacterSet "#%;<>?[\]^`{|}
URLQueryAllowedCharacterSet "#%<>[\]^`{|}
URLUserAllowedCharacterSet "#%/:<>?@[\]^`
**/
NSString *encodedUrl = [@"htt://baidu.com/a.do?p1=中文&p2=http://baidu.com/a?p11=x&p12=xx" stringByAddingPercentEncodingWithAllowedCharacters:allowedCharacters];
NSLog(@"%@", encodedUrl);
}
ps:
在有些时候，如果业务需要url包含签名之类的参数，大多数情况下请勿对sign等签名字段转码，除非签名验证方也对sign进行解码操作，具体开发过程中还是需要根据交互协议来。
