json parsing in objective c

Question

在解析.json文件的内容时，像“ jamie's ”这样的字符串被表示为“ jamie 's ”任何人都知道为什么会这样？

Answer 1

because the apostrophe is a special charachter and cant be transmitted inside of http packets. all special characters must be replaced with escape sequences like ' or with percent escapes %27 ...

in the NSString class you will find the methods ' stringByReplacingPercentEscapesUsingEncoding: ' and ' stringByAddingPercentEscapesUsingEncoding: ' for handle percent escapes.

the escape sequencies you must handle by yourself for example with ' stringByReplacingOccurrencesOfString:@"@#039;" withString:@"'" stringByReplacingOccurrencesOfString:@"@#039;" withString:@"'" ' ...

Answer 2

确保使用application / json作为内容类型将数据从服务器传输到客户端。

Answer 3

您还可以访问以下链接http://mobile.tutsplus.com/tutorials/iphone/iphone-json-twitter-api/