用引号打印黑色斜线

Question

打印变量

var vin = "{\"method\": \"vinotestMethod\"}"
print(vin)

给我输出：

  

{“method”：“vinotestMethod”}

但我需要输出如：

  

{\“method \”：\“vinotestMethod \”}

我们怎么能在Swift中做到？

Answer 1

要逃避反斜杠，请将其加倍：

ByteOrder.nativeOrder()

将打印：

  

{\“method \”：\“vinotestMethod \”}

Answer 2

如果您想创建JSON，那么您需要使用\来代替自己使用JSONSerialization进行撰写。

Swift 3

let dic = ["method" : "vinotestMethod"] //Add other key-value pair that you want
if let data = try? JSONSerialization.data(withJSONObject: dic, options: .prettyPrinted) {
    let str = String(data: data, encoding: .utf8)
    print(str)
    //If you doesn't want `\n` with String
    print(str?.replacingOccurrences(of: "\n", with: ""))
}

Swift 2.3或更低

let dic = ["method" : "vinotestMethod"] //Add other key-value pair that you want
if let data = try? NSJSONSerialization.dataWithJSONObject(dic, options: .PrettyPrinted) {
    let str = String(data: data, encoding: NSUTF8StringEncoding)
    print(str)
    //If you doesn't want `\n` with String
    print(str?.stringByReplacingOccurrencesOfString("\n", withString: ""))
}