我很快就遇到了JSON序列化的问题。
我的代码如下所示：
var username = "xcode"
var password = "pass"
let json = ["username":username, "password":password]
let jsonData = try JSONSerialization.data(withJSONObject: json, options: .prettyPrinted)
var request = URLRequest(url: URL(string: "myServer")!)
request.httpMethod = "POST"
request.httpBody = jsonData
我的问题是，当我向服务器提交请愿书时（工作正常），它向我返回以下代码行：
responseString = Optional("{\"username\":[\"This field is required.\"],\"password\":[\"This field is required.\"]}")
我究竟做错了什么？
代码应为：
var username = "xcode"
var password = "pass"
let json = ["username":username, "password":password]
let jsonData = try JSONSerialization.data(withJSONObject: json, options: .prettyPrinted)
var request = URLRequest(url: URL(string: "http://10.192.118.193:8000/users/")!)
request.httpMethod = "POST"
request.httpBody = jsonData
request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")
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