Swift Post Special and Foreign characters

问题:

For the posting I am using

 var post = "content=\(message)&post=\(time)"

But when I enter something like € for variable message, I get this error: fatal error: unexpectedly found nil while unwrapping an Optional value (lldb)

When there are no special characters it works and I get back:
2015-02-04 15:38:16.918 sdfff[12306:60b] Response code: 200 2015-02-04 15:38:16.920 sdfff[12306:60b] Response ==> {"success":1}

回答1:

You have to use stringByAddingPercentEscapesUsingEncoding when using special charactheres in your NSURL as follow:

var post = "content=€&post=€".stringByAddingPercentEscapesUsingEncoding(NSUTF8StringEncoding)!

println(post)  // "content=%E2%82%AC&post=%E2%82%AC"


var revert = "content=%E2%82%AC&post=%E2%82%AC".stringByRemovingPercentEncoding!
println(revert) // "content=€&post=€"