java - StreamingOutput 的 Jersey 2 客户端

Question

我有一个 Jersey 服务将二进制数据输出为 StreamingOutput、MediaType.APPLICATION_OCTET_STREAM。

如何使用 Jersey 2 实现客户端来处理来自此类服务的响应？

Answer 1

下面是一种实现 Jersey 2 客户端的方法，用于从 REST 服务下载文件，该服务返回二进制数据作为 StreamingOutput 和 MediaType.APPLICATION_OCTET_STREAM -

    Client client = ClientBuilder.newClient();
    // change SERVER_URL, API_PATH and PATH as per REST API details
    WebTarget webTarget = client.target(SERVER_URL).path(API_PATH).path(PATH);

    Invocation.Builder invocationBuilder = webTarget.request();
    Response response = invocationBuilder.get();

    String contentDispositionHeader = response.getHeaderString("Content-Disposition");
    String fileName = contentDispositionHeader
            .substring(contentDispositionHeader.indexOf("filename=") + "filename=".length()).replace("\"", "");

    InputStream responseStream = response.readEntity(InputStream.class);

    // Set location here where you want to store downloaded file. 
    // It will replace the file if already exist in that location with same name.
    Files.copy(responseStream, Paths.get("H:/"+ fileName), StandardCopyOption.REPLACE_EXISTING);

    System.out.println("File is downloaded");