问题描述
我正在尝试将一些简单的HTML转换为JSON对象中的字符串值，但我无法使字符串编码无法转义NSJSONSerialization中的字符串。
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.
示例...我有一个包含一些基本HTML文本的字符串：
Example... I have a string which contains some basic HTML text:
NSString *str = @"<html><body><p>Samples / Text</p></body></html>";
所需的结果是JSON，其中包含HTML值：
The desired outcome is JSON with HTML as the value:
{
"Title":"My Title",
"Instructions":"<html><body><p>Samples / Text</p></body></html>"
}
我正在使用标准技术将NSDictionary转换为包含JSON的NSString ：
I'm using the standard technique to convert an NSDictionary to a NSString containing JSON:
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:&err];
NSString *resultingString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"%@", resultingString);
此方法生成的JSON有效，但HTML包含所有正斜杠转义：
The JSON produced by this method is valid, however the HTML has all forward slashes escaped:
{
"Title":"My Title",
"Instructions":"<html><body><p>Samples \/ Text<\/p><\/body><\/html>"
}
这会在指令JSON字符串中创建无效的HTML。
This creates invalid HTML in the instructions JSON string.
我想坚持使用NSJSONSerialization，因为我们在框架中的其他地方都使用它，并且在切换到非Apple库之前我已经被烧毁了，因为它们得不到支持。我尝试了很多不同的字符串编码，并且所有字符串编码都逃脱了尖括号。
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.
显然\ /是JavaScript中/字符的有效表示，这就是为什么正斜杠被转义（即使StackOverflow文本编辑器也将其转义）。请参阅：
以及。我只是不希望它这样做，并且似乎没有办法阻止iOS在序列化时转义字符串值中的正斜杠。
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:escaping json string with a forward slash?and also JSON: why are forward slashes escaped?. 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.
推荐答案
我相信 NSJSONSerialization 的行为与HTML编码一样。
I believeNSJSONSerialization is behaving as designed in regards to encoding HTML.
如果你看一些问题（，）在JSON编码HTML时你会看到答案总是提到转义正斜杠。
If you look at some questions (1, 2) on encoding HTML in JSON you'll see the answers always mention escaping the forward slashes.
不需要转发斜杠，但HTML不允许使用javascript字符串< / 因为它可能与< SCRIPT> 标记的结尾混淆。
JSON doesn't require forward slashes to be escaped, but HTML doesn't allow a javascript string to contain </ as it can be confused with the end of the <SCRIPT> tag.
查看答案，，最直接的是，载于
See the answers here, here and most directly the w3.org HTML4 Appendix which states in B.3.2 Specifying non-HTML data
ILLEGAL EXAMPLE:
The following script data incorrectly contains a "</" sequence (as part of "</EM>") before the SCRIPT end tag:
<SCRIPT type="text/javascript">
document.write ("<EM>This won't work</EM>")
</SCRIPT>
虽然此行为可能会导致您的问题 NSJSONSerialisation 只是按照古老的HTML数据编码规则进行播放，以便在< SCRIPT> 标签中使用。
Although this behaviour may cause issues for you NSJSONSerialisation is just playing by the age old rules of encoding HTML data for use in <SCRIPT> tags.
这篇关于包含正斜杠/和HTML的字符串的NSJSONSerialization序列化未正确转义的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！