Struts 2 完成直接输出流到浏览器

最新推荐文章于 2022-09-22 21:25:01 发布

tempdowncomputer

最新推荐文章于 2022-09-22 21:25:01 发布

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文章标签： java

本文链接：https://blog.youkuaiyun.com/tempdowncomputer/article/details/84053984

HttpServletResponse response = ServletActionContext.getResponse();

// 下面是输出(一定要注意编码)
        InputStream in = null;
        try {
            response.setContentType("xls");

//response().setContentType("application/octet-stream; charset=iso-8859-1");

            response.setHeader("Content-Disposition", "attachment; filename=" + encode(fileName + ".xls"));

            OutputStream os = response.getOutputStream();

            in = new FileInputStream(file);
            int tp = in.read();
            while (tp != -1) {
                response.getOutputStream().write(tp);
                tp = in.read();
            }
            os.flush();
        } catch (Throwable e) {
            logger.info("文件下载失败！", e);
            throw new RuntimeException("文件下载失败！", e);
        } finally {
            try {
                in.close();
            } catch (IOException e) {
                logger.info("关闭流失败！", e);
                throw new RuntimeException("关闭流失败！", e);
            }
        }