如何将“边界”设置为java。网http。HttpRequest头

Question

我试图使用JDK11中的HttpClient和HttpRequest向服务器发送一个多部分文件：

public static int sendMultipartFile(String uri, Path filePath) {
    HttpClient httpClient =`enter code here` HttpClient.newBuilder()
            .version(HttpClient.Version.HTTP_2)
            .build();

    HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create(uri))
            .POST(HttpRequest.BodyPublishers.ofFile(filePath))
            .header("Content-Type", "multipart/form-data")
            .setHeader("Boundary", "gc0p4Jq0M2Yt08jU534c0p")
            .build();
    HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
    return response.statusCode();
}

服务器终结点：

@PostMapping("/api/logs/throw")
public void handleFileUpload(@RequestParam("logs.7z") MultipartFile file) {
    Path path = Paths.get("/home/terminal_logs/");
    storageService.store(file, path);
}

服务器端发生以下错误：

ERROR 17072 --- [nio-8081-exec-2] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.web.multipart.MultipartException: Failed to parse multipart servlet request; nested exception is java.io.IOException: org.apache.tomcat.util.http.fileupload.FileUploadException: the request was rejected because no multipart boundary was found] with root cause

如何正确设置标题以避免此错误