01. // 将URL编码 02. - (NSString *)encodeToPercentEscapeString: (NSString *) input 03. { 04. NSString *outputStr = (NSString *) CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, 05. (CFStringRef)input, 06. NULL, 07. (CFStringRef)@"!*'();:@&=+$,/?%#[]", 08. kCFStringEncodingUTF8)); 09. return outputStr; 10. } 11. 12. // 将URL解码 13. - (NSString *)decodeFromPercentEscapeString: (NSString *) input 14. { 15. NSMutableString *outputStr = [NSMutableString stringWithString:input]; 16. [outputStr replaceOccurrencesOfString:@"+" 17. withString:@" " 18. options:NSLiteralSearch 19. range:NSMakeRange(0, [outputStr length])]; 20. 21. return [outputStr stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 22. }
演示一下上面的封装函数：
01. NSString * testUrl = @";a href="" target="_blank" class="keylink">word</a>s=($# it's {a*123})00!*'();:@&=+$,/?%#[]"; 02. NSLog(@"original: %@", testUrl); 03. 04. 05. NSString * encodeStr = [self encodeToPercentEscapeString:testUrl]; 06. NSLog(@"encoded: %@", encodeStr); 07. 08. NSString * encodeStr2 = [testUrl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 09. NSLog(@"encoded2:%@", encodeStr2); 10. 11. NSString * decodeStr = [self decodeFromPercentEscapeString:encodeStr]; 12. NSLog(@"decoded: %@", decodeStr);
结果如下：
>> original: http://search.google.com?keys=($# it's {a*123})00!*'();:@&=+$,/?%#[]
>> encoded: http%3A%2F%2Fsearch.google.com%3Fkeywords%3D%28%24%23%20it%27s%20%7Ba%2A123%7D%2900%21%2A%27%28%29%3B%3A%40%26%3D%2B%24%2C%2F%3F%25%23%5B%5D >> encoded2: http://search.google.com?keywords=($%23%20it's%20%7Ba*123%7D)00!*'();:@&=+$,/?%25%23%5B%5D >> decoded: http://search.google.com?keywords=($# it's {a*123})00!*'();:@&=+$,/?%#[]
演示一下自带的URL转码测试代码：
01. NSString* string1 = @"文件夹"; 02. 03. NSString* string2 = [string1 stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 04. 05. NSString* string3 = [string2 stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 06. 07. NSString* string4 = [string2 stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 08. 09. NSString* string5 = [string3 stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 10. 11. NSString* string6 = [string4 stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 12. 13. NSString* string7 = [string5 stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 14. 15. 16. NSLog(@"原始数据%@",string1); 17. NSLog(@"一层编码%@",string2); 18. NSLog(@"两层编码%@",string3); 19. NSLog(@"一层编码的一层解码%@",string4); 20. NSLog(@"两层编码的一层解码%@",string5); 21. NSLog(@"一层编码的两层解码%@",string6); 22. NSLog(@"两层编码的两层解码%@",string7);
打印结果：
2014-06-10 15:00:02.425 DareWayApp[7400:671651] 原始数据https://www.cloudsafe.com/文件夹
2014-06-10 15:00:02.426 DareWayApp[7400:671651] 一层编码https://www.cloudsafe.com/%E6%96%87%E4%BB%B6%E5%A4%B9
2014-06-10 15:00:02.427 DareWayApp[7400:671651] 两层编码https://www.cloudsafe.com/%25E6%2596%2587%25E4%25BB%25B6%25E5%25A4%25B9
2014-06-10 15:00:02.427 DareWayApp[7400:671651] 一层编码的一层解码https://www.cloudsafe.com/文件夹
2014-06-10 15:00:02.427 DareWayApp[7400:671651] 两层编码的一层解码https://www.cloudsafe.com/%E6%96%87%E4%BB%B6%E5%A4%B9
2014-06-10 15:00:02.427 DareWayApp[7400:671651] 一层编码的两层解码https://www.cloudsafe.com/文件夹
2014-06-10 15:00:02.427 DareWayApp[7400:671651] 两层编码的两层解码https://www.cloudsafe.com/文件夹
如果服务器用的是GBK编码，只要把上面的UTF改成下面的encoding就可以了：
1. NSStringEncoding gbkEncoding = CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000); 2. urlString = [urlString stringByReplacingPercentEscapesUsingEncoding:gbkEncoding]; 版权声明：本文为博主原创文章，未经博主允许不得转载。