json_encode等同于objective-c [英] json_encode equivalent for objective-c

问题描述

我需要写相当于这个php代码

  json_encode（utf8_encode（））
  
 $ b 
 
 
 
  [NSString stringWithCString：[testString cStringUsingEncoding：NSUTF8StringEncoding] encoding：NSASCIIStringEncoding] 
  / pre> 
 
 
所以现在，我需要实现相当于json_encode php函数。
 
 
 
 input：http ：//www.mydomain.com/s？c =Théâtre，Cinéma
 
 
 
预期输出：http://www.mydomain.com/s?c=有没有人有这样做的有效方式？
 
 
解决方案
你可以看看
  +（NSData *）dataWithJSONObject：（id）obj选项：（NSJSONWritingOptions）选择错误：（NSError **）错误
  
你从苹果基金会课程的某些对象中获取JSON数据。如果你需要一个字符串，你可以使用：
   - （id）initWithData：（NSData *）数据编码：（NSStringEncoding）编码NSString的
  
。可能导致以下情况：
  NSString * string = [[NSString alloc] initWithData：[NSJSONSerialization dataWithJSONObject：YOUR_OBJECT_HERE options：0 error：nil] encoding：NSUTF8StringEncoding] autorelease]; 
  
 
I need to write the equivalent to this php code 
json_encode(utf8_encode())
in objective-c

I've implemented the equivalent to utf8_encode with 
[NSString stringWithCString:[testString cStringUsingEncoding:NSUTF8StringEncoding] encoding:NSASCIIStringEncoding]
So now, I need to implement the equivalent to json_encode php function.

input : "http://www.mydomain.com/s?c=Théâtre,Cinéma"

expected output :  "http://www.mydomain.com/s?c=Th\u00c3\u00a9\u00c3\u00a2tre,Cin\u00c3\u00a9ma"

Does anyone have an efficient way to do that?
解决方案
You could have a look at 
+ (NSData *)dataWithJSONObject:(id)obj options:(NSJSONWritingOptions)opt error:(NSError **)error
You get back JSON data from some object of Apples Foundation classes. If you need a string, you could use:
- (id)initWithData:(NSData *)data encoding:(NSStringEncoding)encoding
of NSString. Might result in something like:
NSString *string = [[[NSString alloc] initWithData:[NSJSONSerialization dataWithJSONObject:YOUR_OBJECT_HERE options:0 error:nil] encoding:NSUTF8StringEncoding] autorelease];


                        
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