本地php网站搭建环境/谷歌chrome官网

其实没那么糟糕
只是你等的人还没到
内心的山川河流
你都已经备好
只等大雁回归
在屋檐下筑个巢

• 方式一，非Spring环境，纯JAVA类

public void download(String href, HttpServletRequest request, HttpServletResponse response) throws Exception {String fileName = href.substring(href.lastIndexOf('/') + 1);//urlString notesUrl = href;//下载文件名称String notesName =fileName;ServletOutputStream out = null;InputStream inputStream = null;try {//文件名String pdfName = notesName ;//路径String path = notesUrl ;// 获取外部文件流//logger.info("下载中------invPdfUrl=" +path);URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setConnectTimeout(3 * 1000);//防止屏蔽程序抓取而返回403错误conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");inputStream = conn.getInputStream();/*** 输出文件到浏览器*/int len = 0;// 输出 下载的响应头，如果下载的文件是中文名，文件名需要经过url编码response.setContentType("text/html;charset=utf-8");response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(pdfName, "UTF-8"));response.setHeader("Cache-Control", "no-cache");out = response.getOutputStream();byte[] buffer = new byte[1024];while ((len = inputStream.read(buffer)) > 0) {out.write(buffer, 0, len);}out.flush();} catch (Exception e) {e.printStackTrace();} finally {if (inputStream != null) {try {inputStream.close();} catch (Exception e) {}}if (out != null) {try {out.close();} catch (Exception e) {}}}}

• 方式二，Spring环境，使用Spring 封装的工具类

public void download(String url, HttpServletResponse response){InputStream is=null;ServletOutputStream outputStream=null;try {URL httpUrl = new URL(url);URLConnection con = httpUrl.openConnection();is = con.getInputStream();outputStream = response.getOutputStream();//生成文件名String suffix = url.substring(url.lastIndexOf("."));String fileName = UUID.randomUUID()+suffix;System.out.println(fileName);//设置响应头,attachment表示以附件的形式下载，inline表示在线打开response.setHeader("content-disposition","attachment;fileName="+fileName);//下载时浏览器显示的名称FileCopyUtils.copy(is,outputStream);} catch (Exception e) {e.printStackTrace();}finally {if (is!=null){try {is.close();} catch (IOException e) {e.printStackTrace();}}if (outputStream!=null){try {outputStream.close();} catch (IOException e) {e.printStackTrace();}}}}

文章持续更新，可以微信搜索「 绅堂Style 」第一时间阅读，回复【资料】有我准备的面试题笔记。
GitHub https://github.com/dtt11111/Nodes 有总结面试完整考点、资料以及我的系列文章。欢迎Star。