Question

我在使用Vapor 3发送带有JSON正文的POST请求时遇到问题。我正在使用https://docs.postman-echo.com/进行测试，它以与发送的JSON相同的方式返回。

我在here上查看了答案，但是在编码和内容类型上却出现了错误。

router.get("hooray") { req -> Future<View> in

  var postHeaders: HTTPHeaders = .init()
  postHeaders.add(name: .contentType, value: "application/json")
  postHeaders.add(name: .accept, value: "*/*")
  postHeaders.add(name: .acceptEncoding, value: "gzip, deflate")

  let oneField = singleGet(foo: "barfoobar")

  // { foo: "barfoobar" } - JSON string

  let encoder = JSONEncoder()
  encoder.outputFormatting = .prettyPrinted

  let jsonData = try encoder.encode(oneField)
  let jsonString = String(data: jsonData, encoding: .utf8)!
  let postBody = HTTPBody(string: jsonString)

  let httpReq = HTTPRequest(method: .POST, url: "/post")

  let httpRes = HTTPClient.connect(hostname: "postman-echo.com", on: req)
                  .flatMap(to: singleGet.self) { client in
                    req.http.headers = postHeaders
                    req.http.contentType = .json
                    req.http.body = postBody
                    return client.send(httpReq).flatMap(to: singleGet.self) { res in
                      return try req.content.decode(singleGet.self)
                    }
                  }

  return try req.view().render("test", httpRes)
}

struct singleGet: Content {
    let foo: String
}

我用此代码得到了正确的响应，但是我想知道当我重新编写代码以匹配this answer时，为什么会出错？

我已将标头和正文添加到请求中，并在闭包内将它们注释掉，但这种方式行不通。

let httpReq = HTTPRequest(method: .POST, url: "/post", headers: postHeaders, body: postBody)

Swift-POST请求，使用Vapor 3发送JSON

0 个答案: