Java Jetty 9客户端设置内容范围值不正常

我正在使用Jetty 9.4 HttpClient尝试重新启动一个大文件下载。我正在使用Jetty 9.4服务器

    final InputStreamResponseListener listener = new 
     InputStreamResponseListener();  
    final Request request = httpClient.newRequest(urlString);                                request.scheme(getUriScheme(urlString)).method(HttpMethod.GET).version(HttpVersion.HTTP_1_1).send(listener);
if (range > 0){
                            request.header("Range", "bytes=" + file.length() + "-")
}

         final Response response = listener.get(getHttpConnTimeout(), TimeUnit.SECONDS);

         // Get content length from response header
         contentLength = response.getHeaders().getField(HttpHeader.CONTENT_LENGTH).getLongValue();
            if (response.getStatus() == HttpStatus.PARTIAL_CONTENT_206) {
            return listener.getInputStream();
        }
         if (response.getStatus() == HttpStatus.OK_200) {
                    return listener.getInputStream();
         }

 if (httpURLConnection != null) { 
     // This works              
     httpURLConnection.setRequestProperty("Range", "bytes=" + file.length() + "-");
 }
 if (httpsURLConnection != null) {
     // This works
     httpsURLConnection.setRequestProperty("Range", "bytes=" + file.length() + "-");
 }

然而，当我使用Java的实现时，一切都很好（意味着不使用Jetty 9 HttpClient）

 if (httpURLConnection != null) { 
     // This works              
     httpURLConnection.setRequestProperty("Range", "bytes=" + file.length() + "-");
 }
 if (httpsURLConnection != null) {
     // This works
     httpsURLConnection.setRequestProperty("Range", "bytes=" + file.length() + "-");
 }

我做错了什么？有人有一个工作示例吗？

它是（AFAIU）“header（）”而不是“param（）”

 if (httpURLConnection != null) { 
     // This works              
     httpURLConnection.setRequestProperty("Range", "bytes=" + file.length() + "-");
 }
 if (httpsURLConnection != null) {
     // This works
     httpsURLConnection.setRequestProperty("Range", "bytes=" + file.length() + "-");
 }

---

此外，“内容范围”不属于请求。

朱利安是正确的。它帮助我消除了Jetty客户端的代码问题。事实证明，Jetty server需要“部分”（也称为接受范围）下载才能执行以下操作（否则Jetty HttpClient将无法使用部分）：

 if (httpURLConnection != null) { 
     // This works              
     httpURLConnection.setRequestProperty("Range", "bytes=" + file.length() + "-");
 }
 if (httpsURLConnection != null) {
     // This works
     httpsURLConnection.setRequestProperty("Range", "bytes=" + file.length() + "-");
 }

---

它现在运行得很好。我的代码片段已被修改，希望将来能帮助其他人。

默认情况下，Microsoft IIS接受http请求中的范围，但Jetty不接受。

 if (httpURLConnection != null) { 
     // This works              
     httpURLConnection.setRequestProperty("Range", "bytes=" + file.length() + "-");
 }
 if (httpsURLConnection != null) {
     // This works
     httpsURLConnection.setRequestProperty("Range", "bytes=" + file.length() + "-");
 }

实际上，服务器管理员应该按照此链接中的描述配置jetty：

 if (httpURLConnection != null) { 
     // This works              
     httpURLConnection.setRequestProperty("Range", "bytes=" + file.length() + "-");
 }
 if (httpsURLConnection != null) {
     // This works
     httpsURLConnection.setRequestProperty("Range", "bytes=" + file.length() + "-");
 }

我尝试了request.header（“范围”，“字节=”+Range+“-”）。它不起作用。我有一个NPE。我修改了代码以反映这个答案。

 if (httpURLConnection != null) { 
     // This works              
     httpURLConnection.setRequestProperty("Range", "bytes=" + file.length() + "-");
 }
 if (httpsURLConnection != null) {
     // This works
     httpsURLConnection.setRequestProperty("Range", "bytes=" + file.length() + "-");
 }