Question

是否可以将NSURLSession发送的请求记录到控制台？我遇到了身份验证问题，如果我无法查看请求，则无法调试

Answer 1

这些方法将以干净的方式打印HTTP请求和响应：

class func log(request: URLRequest){

    let urlString = request.url?.absoluteString ?? ""
    let components = NSURLComponents(string: urlString)

    let method = request.httpMethod != nil ? "\(request.httpMethod!)": ""
    let path = "\(components?.path ?? "")"
    let query = "\(components?.query ?? "")"
    let host = "\(components?.host ?? "")"

    var requestLog = "\n---------- OUT ---------->\n"
    requestLog += "\(urlString)"
    requestLog += "\n\n"
    requestLog += "\(method) \(path)?\(query) HTTP/1.1\n"
    requestLog += "Host: \(host)\n"
    for (key,value) in request.allHTTPHeaderFields ?? [:] {
        requestLog += "\(key): \(value)\n"
    }
    if let body = request.httpBody{
        requestLog += "\n\(NSString(data: body, encoding: String.Encoding.utf8.rawValue)!)\n"
    }

    requestLog += "\n------------------------->\n";
    print(requestLog)
}

class func log(data: Data?, response: HTTPURLResponse?, error: Error?){

    let urlString = response?.url?.absoluteString
    let components = NSURLComponents(string: urlString ?? "")

    let path = "\(components?.path ?? "")"
    let query = "\(components?.query ?? "")"

    var responseLog = "\n<---------- IN ----------\n"
    if let urlString = urlString {
        responseLog += "\(urlString)"
        responseLog += "\n\n"
    }

    if let statusCode =  response?.statusCode{
        responseLog += "HTTP \(statusCode) \(path)?\(query)\n"
    }
    if let host = components?.host{
        responseLog += "Host: \(host)\n"
    }
    for (key,value) in response?.allHeaderFields ?? [:] {
        responseLog += "\(key): \(value)\n"
    }
    if let body = data{
        responseLog += "\n\(NSString(data: body, encoding: String.Encoding.utf8.rawValue)!)\n"
    }
    if error != nil{
        responseLog += "\nError: \(error!.localizedDescription)\n"
    }

    responseLog += "<------------------------\n";
    print(responseLog)
}

示例：

---------- OUT ----------> https://api.example.com/api/auth POST /api/auth HTTP/1.1 Host: api.example.com -------------------------> <---------- IN ---------- https://api.example.com/api/auth HTTP/1.1 200 /api/auth Host: api.example.com Content-Type: application/json; charset=UTF-8 Content-Length: 331 Date: Mon, 21 Aug 2017 18:55:46 GMT Server: Google Frontend { "Data": { "Token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE1MDMzNDUzNDYsImlhdCI6MTUwMzM0MTc0NiwianRpIjoiNTcwNmMyN2UtODZhMi0xMWU3LThkN2ItNjJjYmY2YzkxYzdhIiwibmJmIjoxNTAzMzQxNzQ2fQ.0p09QG9ImjemQxlDIxZb9SL6j3Fy4VAAzsA-JZp27q0", "ExpiryUnix": 1503345346, "ExpiryTimestamp": "Mon Aug 21 19:55:46 UTC 2017" } } <------------------------

Answer 2

打印请求正文的一种可能方法是：

    let sBody = NSString(data: request.HTTPBody!, encoding: NSASCIIStringEncoding)
    print(sBody)

打印所有标题：

    let sHeaderFields = request.allHTTPHeaderFields
    print(sHeaderFields)

Answer 3

值得尝试将CFNETWORK_DIAGNOSTICS = 3添加到Xcode方案中用于运行的环境变量。此处更多信息：https://developer.apple.com/library/archive/qa/qa1887/_index.html

Answer 4

以下方法对我有用。对于请求体，我得到原始的ascii值，对于头字段，我使用String（描述:)函数将头值作为字符串。

斯威夫特3：

print("REQUEST BODY: \(NSString(data: request.httpBody!, encoding: String.Encoding.ascii.rawValue)!)")
print("REQUEST HEADER: \(String(describing: request.allHTTPHeaderFields!))")

控制台输出：

请求身体：{“饲料”：[“xxxx”]} REQUEST HEADER：[“Content-Type”：“application / json”，“Authorization”：“Token token = xxxxxxxxxxxxxxxxxxxxxxxxx”]

另一种方法可能是use a tool like Postman来构建您的请求并查看API响应。有一个免费版本，一旦你超越学习曲线，它在使用API时是必不可少的。

h / t @William Kinaan。他让我朝着正确的方向前进。

在控制台中记录NSURLSession请求

4 个答案: