springBoot 文件下载

springboot读取文件响应为下载流

/**
	 * zip模板下载
	 * @param tempCode 模板编码
	 * @param response
	 */
	@RequestMapping("/zip/download")
	public void zipDownload(HttpServletResponse response) {
		 String zipName = "template.zip";
		 response.reset();
	    
	        response.setContentType("APPLICATION/OCTET-STREAM");  
	        response.setHeader("Content-Disposition","attachment; filename="+zipName);
	        try {
	    	
	        	OutputStream out = response.getOutputStream();
　　　　　　　　　　　　　　//ResourceUtils读取模板
	        	File file = ResourceUtils.getFile("classpath:template/template.zip");
	        	InputStream in = new FileInputStream(file);
	        
		        // 循环取出流中的数据
		        byte[] b = new byte[1024];
		        int len;
		        while ((len = in.read(b)) !=-1) {
		        	out.write(b, 0, len);
		          }
		        in.close();
		        out.close();
	        } catch (Exception e) {
	            e.printStackTrace();
	        }
	}