爱站程序员基地前端http访问后端进行文件下载功能，主要需要设置http相关相应参数，主要方法代码如下：
/**** str 自定义导出的内容模板格式* fileName 文件名***/public void exportFile(String str,String fileName) throws IOException {HttpServletResponse response = super.getResponse();response.setContentType(\"text/plain\");response.setHeader(\"Content-disposition\",\"attachment;filename=\" + new String(fileName.getBytes(\"UTF-8\"),\"ISO8859-1\"));BufferedInputStream bis = null;BufferedOutputStream bos = null;StringBuffer sb = new StringBuffer();sb.append(str);String strl = sb.toString();try{bis = new BufferedInputStream(new ByteArrayInputStream(strl.getBytes(\"utf-8\")));bos = new BufferedOutputStream(response.getOutputStream());// 创建缓冲区byte buffer[] = new byte[1024];int length = 0;// 循环将输入流中的内容读取到缓冲区当中while((length=bis.read(buffer))>0){// 输出缓冲区的内容到浏览器，实现文件下载bos.write(buffer, 0, length);}}catch(Exception e){e.printStackTrace();}finally{if(bis != null){bis.close();}if(bos != null){bos.close();}}}
