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PONSJSONSerialization serialization of a string containing forward slashes / and HTML is escaped incorrectly
 

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    <p>I am trying to convert some simple HTML into a string value in a JSON object and I'm having trouble getting the string encoding to not escape the string in NSJSONSerialization.</p> <p>Example... I have a string which contains some basic HTML text:</p> <pre><code>NSString *str = @"&lt;html&gt;&lt;body&gt;&lt;p&gt;Samples / Text&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;"; </code></pre> <p>The desired outcome is JSON with HTML as the value:</p> <pre><code>{ "Title":"My Title", "Instructions":"&lt;html&gt;&lt;body&gt;&lt;p&gt;Samples / Text&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;" } </code></pre> <p>I'm using the standard technique to convert an NSDictionary to a NSString containing JSON:</p> <pre><code>NSMutableDictionary *dict = [NSMutableDictionary dictionary]; [dict setObject:str forKey:@"Instructions"]; [dict setObject:@"My Title" forKey:@"Title"]; NSError *err; NSData *data = [NSJSONSerialization dataWithJSONObject:dict options:NSJSONWritingPrettyPrinted error:&amp;err]; NSString *resultingString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; NSLog(@"%@", resultingString); </code></pre> <p>The JSON produced by this method is valid, however the HTML has all forward slashes escaped:</p> <pre><code>{ "Title":"My Title", "Instructions":"&lt;html&gt;&lt;body&gt;&lt;p&gt;Samples \/ Text&lt;\/p&gt;&lt;\/body&gt;&lt;\/html&gt;" } </code></pre> <p>This creates invalid HTML in the instructions JSON string.</p> <p>I'd like to stick with NSJSONSerialization since we're using that everywhere else in our framework and I've been burned before switching to non-Apple libraries as they get desupported. I've tried many different string encodings and all of them escape the angle brackets.</p> <p>Apparently \/ is a valid representation in JavaScript for the / characters, which is why forward slash is escaped (even the StackOverflow text editor escaped it). See: <a href="https://stackoverflow.com/questions/3413878/escaping-json-string-with-a-forward-slash">escaping json string with a forward slash?</a> and also <a href="https://stackoverflow.com/questions/1580647/json-why-are-forward-slashes-escaped">JSON: why are forward slashes escaped?</a>. I just don't want it to do that and there doesn't seem to be a way to stop iOS from escaping forward slashes in string values when serializing.</p>
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    1. COAnother good reason to not use NSJSONSerialization, I suppose. One could always scan the data and replace adjacent "\/" characters with "/", but kinda messy.
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    2. COThat's what I'm doing for now, which feels like a hack. Unfortunately every third party iOS framework I've used so far has been de-supported after the original authors got bored or busy.
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    3. COWe're still using SBJSON. And worst case you can write your own -- it's really only about 2K lines of code, so long as you don't get too fancy.
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