我可以在本地上传图片，但不能远程上传（即另一台机器）。下面是代码。。
@webservlet（“/uploadserv”）
公共类uploadservlet扩展了httpservlet{

private static final String UPLOAD_DIR1 = "\\\\ip-address\\C$\\upload\\";
public UploadServlet() {
    super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    doPost(request, response);
}

protected void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    boolean isMultipart = ServletFileUpload.isMultipartContent(request);
    if (!isMultipart) {
    } else {
        try {
            List<FileItem> multiparts = new ServletFileUpload(new DiskFileItemFactory())
                    .parseRequest(new ServletRequestContext(request));

            for (FileItem item : multiparts) {
                if (!item.isFormField()) {
                    String name = new File(item.getName()).getName();
                    item.write(new File(UPLOAD_DIR1 + name));
                }
            }
            // File uploaded successfully
            System.out.println("File uploaded successfully");
        } catch (Exception ex) {
            ex.printStackTrace();
            System.out.println("File uploaded failed..");
        }
    }}
    request.getRequestDispatcher("response.jsp").forward(request, response);
}