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iOS下URL编码
使用NSString默认的URL编码,会对汉字等进行转义,但是对=+等这些字符不会进行转义
所以要手动实现这些字符的转义
- (NSString *)encodeToPercentEscapeString: (NSString *) input { // Encode all the reserved characters, per RFC 3986 // (<http://www.ietf.org/rfc/rfc3986.txt>) NSString *outputStr = (NSString *) CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (CFStringRef)input, NULL, (CFStringRef)@"!*‘();:@&=+$,/?%#[]", kCFStringEncodingUTF8); return outputStr; } - (NSString *)decodeFromPercentEscapeString: (NSString *) input { NSMutableString *outputStr = [NSMutableString stringWithString:input]; [outputStr replaceOccurrencesOfString:@"+" withString:@" " options:NSLiteralSearch range:NSMakeRange(0, [outputStr length])]; return [outputStr stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; }
测试代码
NSString * testUrl = @"http://search.google.com?keywords=($# it‘s {a*123})00!*‘();:@&=+$,/?%#[]"; NSLog(@"original: %@", testUrl); NSString * encodeStr = [self encodeToPercentEscapeString:testUrl]; NSLog(@"encoded: %@", encodeStr); NSString * encodeStr2 = [testUrl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; NSLog(@"encoded2:%@", encodeStr2); NSString * decodeStr = [self decodeFromPercentEscapeString:encodeStr]; NSLog(@"decoded: %@", decodeStr);
结果
>> original: http://search.google.com?keywords=($# 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!*‘();:@&=+$,/?%#[]
转自:http://blog.csdn.net/kesalin/article/details/6678939
iOS下URL编码
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