带有 cookie 的 RestTemplate 客户端 [英] RestTemplate client with cookies

问题描述

我正在用 Java 编写一个简单的客户端，以允许重复使用可通过 RESTful API 访问的专有病毒扫描软件.要上传用于扫描 API 的文件，需要一个 POST 用于连接，然后是一个 POST 用于将文件发布到服务器.在对 Connect POST 的响应中，服务器设置了 cookie，这些 cookie 需要出现在随后的 POST 中以发布文件.我目前在我的客户端中使用 Spring RestTemplate.

I'm writing a simple client in Java to allow reusable use of proprietary virus scanning software accessible through a RESTful API. To upload a file for scanning the API requires a POST for Connect, followed by a POST for Publishing the file to the server. In the response to the Connect POST there are cookies set by the server which need to be present in the subsequent POST for publishing the file. I'm currently using Spring RestTemplate in my client.

我的问题是如何访问响应中的 cookie 以转发回带有后续 POST 的服务器?我可以看到它们存在于返回的标头中，但 ResponseEntity 上没有方法可以访问它们.

My question is how do I access the cookies in the response to forward back to the server with the subsequent POST? I can see that they are present in the header that is returned but there are no methods on the ResponseEntity to access them.

推荐答案

RestTemplate 有一个方法可以定义接口ResponseExtractor，使用这个接口要获取响应的标头，一旦获得它们，您就可以使用 HttpEntity 将其发回并再次添加.

RestTemplate has a method in which you can define Interface ResponseExtractor<T>, this interface is used to obtain the headers of the response, once you have them you could send it back using HttpEntity and added again.

 .add("Cookie", "SERVERID=c52");

试试这样的方法.

String cookieHeader = null;

new ResponseExtractor<T>(){
      T extractData(ClientHttpResponse response) {
        response.getHeaders();
      }
}

然后

  HttpHeaders headers = new HttpHeaders();
  headers.add("Cookie", cookieHeader );

  ResponseEntity<byte[]> response = restTemplate.exchange("http://example.com/file/123",
      GET,
      new HttpEntity<String>(headers),
      byte[].class);

另请阅读此帖子

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