Java Spring：从类到RESTWeb服务的文件上载

我创建了一个SpringWeb服务文件exhange，这样客户端就可以从服务器下载一个文件（流式传输，因为文件可能很大），现在我可以从客户端实现文件上传（客户端是一个java类，它调用web服务并上传文件）。 对于第一步，下载部分，我使用以下代码： 服务器端（此代码将得到改进）

现在，对于文件上传，我应该使用上面的代码，但是使用反向的客户机-服务器代码。所以在客户端上，我可以使用

String response= restTemplate.postForEntity(serverIp + "/client/file/?toStorePath={toStorePath}", responseSend, String.class, toStorePath);

但如何设置

HttpServletResponse

并将文件流发送到服务器？ 谢谢

暂时更新这段代码，但我想使用spring而不是http方法 论客户

@Override
public Response sendFile(String serverIp, String toStorePath, String filePath) {
    try (CloseableHttpClient httpClient = HttpClientBuilder.create().build()){
        HttpPost httppost = new HttpPost(serverIp + "ATS/client/file");
        File file = new File(filePath);

        MultipartEntityBuilder builder = MultipartEntityBuilder.create();
        ContentBody cbFile = new FileBody(file);
        ContentBody cbPath= new StringBody(toStorePath,ContentType.TEXT_PLAIN);
        builder.addPart("file", cbFile);
        builder.addPart("toStorePath",cbPath);
        httppost.setEntity(builder.build());
        CloseableHttpResponse httpResponse = httpClient.execute(httppost);
        HttpEntity resEntity = httpResponse.getEntity();

        System.out.println(httpResponse.getStatusLine());
        if (resEntity != null) {
            ObjectMapper mapper = new ObjectMapper();
            Response response = mapper.readValue(resEntity.getContent(), Response.class);
            EntityUtils.consume(resEntity) ;
            return response;
        }
        //It should never be thrown 
        else return new Response(false, false, "Error with server response" , null); 
    }catch(Exception e){
        ErrorResponse errorResponse= ErrorResponseBuilder.buildErrorResponse(e);
        LOG.error("Threw exception in FileServicesImpl::sendFile :" + errorResponse.getStacktrace());
        return new Response(false, false,"Error sending the file!" , errorResponse);
    }

而是在服务器上：

    @Override
@RequestMapping(value = "/file", method = RequestMethod.POST)
public @ResponseBody Response storeAcquisition(@RequestParam("file") MultipartFile file, @RequestParam("toStorePath") String toStorePath){
    String name= file.getOriginalFilename();
    if (!file.isEmpty()) {
        try {
            file.transferTo(new File(toStorePath + "/" + name));
            return new Response(true, true, "You successfully uploaded " + name + " into " + toStorePath, null);
        } catch (Exception e) {
            ErrorResponse errorResponse= ErrorResponseBuilder.buildErrorResponse(e);
            LOG.error("Threw exception in MatlabClientControllerImpl::storeAcquisition :" + errorResponse.getStacktrace());
            return new Response(false, false, "You failed to upload " + name, errorResponse);
        }
    } else {
        return new Response(false, false, "You failed to upload " + name + " because the file was empty.", null);
    }   
}

---

我更新了工作代码，但我想使用spring库我更新了工作代码，但我想使用spring库

@Override
public Response sendFile(String serverIp, String toStorePath, String filePath) {
    try (CloseableHttpClient httpClient = HttpClientBuilder.create().build()){
        HttpPost httppost = new HttpPost(serverIp + "ATS/client/file");
        File file = new File(filePath);

        MultipartEntityBuilder builder = MultipartEntityBuilder.create();
        ContentBody cbFile = new FileBody(file);
        ContentBody cbPath= new StringBody(toStorePath,ContentType.TEXT_PLAIN);
        builder.addPart("file", cbFile);
        builder.addPart("toStorePath",cbPath);
        httppost.setEntity(builder.build());
        CloseableHttpResponse httpResponse = httpClient.execute(httppost);
        HttpEntity resEntity = httpResponse.getEntity();

        System.out.println(httpResponse.getStatusLine());
        if (resEntity != null) {
            ObjectMapper mapper = new ObjectMapper();
            Response response = mapper.readValue(resEntity.getContent(), Response.class);
            EntityUtils.consume(resEntity) ;
            return response;
        }
        //It should never be thrown 
        else return new Response(false, false, "Error with server response" , null); 
    }catch(Exception e){
        ErrorResponse errorResponse= ErrorResponseBuilder.buildErrorResponse(e);
        LOG.error("Threw exception in FileServicesImpl::sendFile :" + errorResponse.getStacktrace());
        return new Response(false, false,"Error sending the file!" , errorResponse);
    }

    @Override
@RequestMapping(value = "/file", method = RequestMethod.POST)
public @ResponseBody Response storeAcquisition(@RequestParam("file") MultipartFile file, @RequestParam("toStorePath") String toStorePath){
    String name= file.getOriginalFilename();
    if (!file.isEmpty()) {
        try {
            file.transferTo(new File(toStorePath + "/" + name));
            return new Response(true, true, "You successfully uploaded " + name + " into " + toStorePath, null);
        } catch (Exception e) {
            ErrorResponse errorResponse= ErrorResponseBuilder.buildErrorResponse(e);
            LOG.error("Threw exception in MatlabClientControllerImpl::storeAcquisition :" + errorResponse.getStacktrace());
            return new Response(false, false, "You failed to upload " + name, errorResponse);
        }
    } else {
        return new Response(false, false, "You failed to upload " + name + " because the file was empty.", null);
    }   
}