ios - 如何在 Swift 中通过 tcp 套接字读取字符串

Question

如果我有一个 java tcp 服务器发送一些文本，我如何从 NSInputStream 读取该文本并将其存储在一个字符串中？

这是我的一段代码，但我不太确定如何从这里获取字符串:

NSStream.getStreamsToHostWithName(addr, port: port, inputStream: &inp, outputStream: &out)

let inputStream = inp!
let outputStream = out!
inputStream.open()
outputStream.open()

var readByte :UInt8 = 0
while inputStream.hasBytesAvailable {
    inputStream.read(&readByte, maxLength: 1)
}

Answer 1

使用您的代码，您每次在循环内只能读取 1 个字节。如果你需要读取所有数据，你可以这样做，例如:

NSStream.getStreamsToHostWithName(addr, port: port, inputStream: &inputStream, outputStream: &outputStream)
inputStream!.open()
outputStream!.open()

let queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
dispatch_async(queue) {
    let bufferSize = 1024
    var inputBuffer = Array<UInt8>(count:bufferSize, repeatedValue: 0)
    while true {
        let bytesRead = self.inputStream!.read(&inputBuffer, maxLength: bufferSize)

        // Here get string from byte Array
        let responseString = NSString(bytes: inputBuffer, length: inputBuffer.count, encoding: NSUTF8StringEncoding) as! String
        println("Data from Stream = \(responseString)")
    }
}

这里是这一行:

let responseString = NSString(bytes: inputBuffer, length: inputBuffer.count, encoding: NSUTF8StringEncoding) as! String

从输入字节数组创建String