Gwt 同步 文件下载 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();
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}
});
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server:
private void writeXml(Document doc, HttpServletResponse response) throws IOException, ServletException
{
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String fileName = "xx.xml";response.setContentType("application/force-download;charset=UTF-8");response.addHeader("Content-Disposition", "attachment;filename="" + fileName + """);
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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();}}
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}
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