Gwt 同步 文件上载 实现
client
Button.addClickHandler(new ClickHandler()
{
@Override
public void onClick(ClickEvent event)
{
String select = getSelect();
String url = GWT.getHostPageBaseURL()+"xx.do?select="+select;
final FormPanel form = new FormPanel();
form.setAction(url);
form.setMethod(FormPanel.METHOD_POST);
RootPanel.get().add(form);
FormElement formElement = FormElement.as(form.getElement());
formElement.submit();
}
});
server:
private void writeXml(Document doc, HttpServletResponse response) throws IOException, ServletException
{
String fileName = "xx.xml"; response.setContentType("application/force-download;charset=UTF-8"); response.addHeader("Content-Disposition", "attachment;filename=\"" + fileName + "\"");
BufferedInputStream bis = null; BufferedOutputStream bos = null; try { String docStr = "xxx"; bis = new BufferedInputStream(new StringInputStream(docStr, "utf-8")); bos = new BufferedOutputStream(response.getOutputStream()); int bytesRead = 0; byte[] buffer = new byte[8192]; while ((bytesRead = bis.read(buffer, 0, 8192)) != -1) { bos.write(buffer, 0, bytesRead); } } catch (FileNotFoundException e) { log.error(e); } finally { if (bos != null) { bos.flush(); bos.close(); } }
}