接收响应的 body

默认情况下，可以使用 HttpResponse 或者 String 作为类型化 HttpClient 请求的类型。例如：

val htmlContent = client.get<String>("https://en.wikipedia.org/wiki/Main_Page")
val response = client.get<HttpResponse>("https://en.wikipedia.org/wiki/Main_Page")

如果配置了 JsonFeature，并且服务端返回了头信息 Content-Type: application/json， 那么还可以指定一个类来反序列化。

val helloWorld = client.get<HelloWorld>("http://127.0.0.1:8080/")

HttpResponse 类

这里列出了 HttpResponse 的 API 参考。

通过 HttpResponse 可以轻松获取响应内容：

• val readChannel: ByteReadChannel = response.content
• val bytes: ByteArray = response.readBytes()
• val text: String = response.readText()
• val readChannel = response.receive<ByteReadChannel>()
• val multiPart = response.receive<MultiPartData>()
• val inputStream = response.receive<InputStream>() 请记住，InputStream API 是同步的！
• response.discardRemaining()

还可以获取其他响应信息，例如响应状态码、响应头、内部状态等：

基本

• val status: HttpStatusCode = response.status
• val headers: Headers = response.headers

高级

• val call: HttpClientCall = response.call
• val version: HttpProtocolVersion = response.version
• val requestTime: Date = response.requestTime
• val responseTime: Date = response.responseTime
• val executionContext: Job = response.executionContext

响应头的扩展函数

• val contentType: ContentType? = response.contentType()
• val charset: Charset? = response.charset()
• val lastModified: Date? = response.lastModified()
• val etag: String? = response.etag()
• val expires: Date? = response.expires()
• val vary: List<String>? = response.vary()
• val contentLength: Int? = response.contentLength()
• val setCookie: List<Cookie> = response.setCookie()