Ajax请求导出（下载）文件

最近做文件导出，由于登录认证方式改为oauth方式，请求后台导出接口需要设置请求头。所以传统的通过form提交的方式并不能满足需求，故而通过原生ajax的方式来实现。

1.实现前端html

    
    
    
    


    测试哈哈

2.后台response加入头信息

public ExportExcel writeWithAjaxHeader(HttpServletResponse response, String fileName) throws IOException{
		//response.reset();
		ServletContext context = RequestContextUtils.getCurrentRequest().getServletContext();
	    String mimeType = context.getMimeType(fileName);
	    String fName = ConverterUtil.toDownloadName(URLEncoder.encode(fileName, "utf8"));
       
	    response.addHeader("Access-Control-Expose-Headers", "ajax-mimeType, ajax-filename");
        response.setHeader("Content-Disposition", "attachment; filename="+fName);
        response.setHeader("ajax-mimeType", mimeType);
        response.setHeader("ajax-filename", fName);
        response.setContentType("application/octet-stream; charset=utf-8");
		write(response.getOutputStream());
		return this;
	}