Question

这是我的字符串，我想从字符串中删除一些字符。我的代码在

之下

"{  \"userpass\" : \"\",  \"apikey\" : \"=\",  \"deviceid\" : \"\",  \"username\" : \"\"}"

我想转换成这种格式。

{ 
    "userpass" : "",
    "username" : "",
    "deviceid" : "",
    "apikey" : "="
}

如何从字符串中删除\以使JSON字符串正确？

Answer 1

如果你想从中获取字典，那么这是字符串响应中的json试试这个，这里str是你的字符串

let str = "{  \"userpass\" : \"\",  \"apikey\" : \"=\",  \"deviceid\" : \"\",  \"username\" : \"\"}"
let data = str.dataUsingEncoding(NSUTF8StringEncoding)
do {
    let dic = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as! NSDictionary
    print(dic)
}
catch let e as NSError {
    print(e.localizedDescription)
}

Answer 2

如果你在调试监视器po myString中看到它将是{ "userpass" : "", "apikey" : "=", "deviceid" : "", "username" : ""}，这个斜杠只是在代码中没有在程序中

Answer 3

在objective-c

NSString *stringWithoutSpaces = [yourString 
   stringByReplacingOccurrencesOfString:@" " withString:@""];

Answer 4

All special characters with in string must use extra \ (escape sequence) to recognize the actual value    

 [string stringByReplacingOccurrencesOfString:@"\\n" withString:@""];
    or string.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet())

hope you will be clear

如何从Swift中的字符串中删除\ n？

4 个答案: