如何使用java将文件发布到URL

Question

public static void main(String[] args) {
    String addURL = "https://xxxxx.service-now.com/sys_ms_project_import.do";
    String user = "xxx";
    String pwd = "xxxx";

    CloseableHttpClient httpClient = HttpClients.createDefault();

    HttpPost  postMethod = new HttpPost (addURL);
    try {
        postMethod.addHeader("Authorization", "BASIC" + " " +
                new String(org.apache.commons.codec.binary.Base64.encodeBase64(new String(user + ":" + pwd).getBytes("UTF-8"))));

        MultipartEntityBuilder builder = MultipartEntityBuilder.create();
        String fileName = "D:\\xxxx\\xxx\\xxxxx.mpp";

        File file = new File(fileName);

        builder.addBinaryBody(
                "file",
                new FileInputStream(file),
                ContentType.APPLICATION_XML,
                file.getName()
            );

            HttpEntity multipart = builder.build();
            postMethod.setEntity(multipart);  

            CloseableHttpResponse response = httpClient.execute(postMethod);

            System.out.println(response.getStatusLine());

            HttpEntity responseEntity = response.getEntity();


            }catch(Exception e){
                e.printStackTrace();
            }
        }

我现在有一个正在运行的面向internet的服务实例。它有一个将mpp文件导入其中的UI。UI很简单，只是有一个表单标签和与之关联的操作，还有一个文件浏览控件和提交按钮。从UI导入时，现在已成功将文件导入服务。我不知道它的内部功能

现在我的要求是，我想从本地机器或者说从不同机器上的java类实现相同的功能

我知道我可以使用ApacheHttpClient来做到这一点。但我不确定这是否能做到。我可以这样做吗？这样就可以实现与通过UI提交的相同的功能

Here is the UI to import file in service now

下面是上面UI的HTML代码

<?xml version="1.0" encoding="utf-8" ?> <j:jelly trim="false" xmlns:j="jelly:core" xmlns:g="glide" xmlns:j2="null" xmlns:g2="null"> <form action="sys_ms_project_import.do" method="post" enctype="multipart/form-data" onsubmit="return validateForm()"> <input size="41" id="importFile" name="importFile" type="file"></input> <input value="Import" style="width: 85px;" width="85" type="submit"></input> </form> </j:jelly>