文件下载，带转码->pdf->swf

大家好，又见面了，我是全栈君。

private String upload = “保存的路径”;

//文件下载

public String download() { //初始化 this.initContext(); String apath = request.getSession().getServletContext().getRealPath(upload); File af = new File(apath); // 假设没有这个目录。就创建个目录 if (!af.exists()) { af.mkdirs(); }

String filenewaddress = request.getSession().getServletContext().getRealPath(upload); System.out.println(“開始下载，请稍后……”); URL urlfile = null; HttpURLConnection httpUrl = null; BufferedInputStream bis = null; BufferedOutputStream bos = null; try { // 把下载地址赋给urlfile urlfile = new URL(fileoldaddress); // 打开下载 URL 引用的资源的通信链接(假设尚未建立这种连接) httpUrl = (HttpURLConnection) urlfile.openConnection(); // 建立与指定socket的连接 httpUrl.connect(); // 提供一个默认的文件名称 String context = httpUrl.getHeaderField(“Content-Disposition”); // 推断context是否为空 if (context == null) { // 取地址最后的/后面的字符当做名字 filename1 = fileoldaddress.substring(fileoldaddress .lastIndexOf(“/”) + 1, fileoldaddress.length()); filenewaddress = filenewaddress + “\\” + filename1; } else { filename1 = context.substring(context.lastIndexOf(“=”) + 1, context.length()); filenewaddress = filenewaddress + “\\” + filename1; } // 把本地保存地址赋给f File f = new File(filenewaddress); bis = new BufferedInputStream(httpUrl.getInputStream()); bos = new BufferedOutputStream(new FileOutputStream(f)); int len = 2048; byte[] b = new byte[len]; while ((len = bis.read(b)) != -1) { bos.write(b, 0, len); } bos.flush(); bis.close(); httpUrl.disconnect(); System.out.println(“下载完毕。”); } catch (Exception e) { System.out.println(“无效下载地址,错误信息：” + e.getMessage()); this.msg = “下载失败!”; this.success = false; } finally { try { if (bis != null) bis.close(); if (bos != null) bos.close(); } catch (IOException e) { System.out.println(“系统错误,错误信息：” + e.getMessage()); System.out.println(“请联系管理员！”); } }

// 下载到本地结束

// 取绝对路径+名 String filepath = apath + “\\” + filename1;

System.out.println(filepath); // 转格式 DocConverter d = new DocConverter(filepath); d.conver(); // 转格式结束 return “success”;

}

转码须要用到两个软件！

Apache_OpenOffice_incubating_3.4.1_Win_x86_install_zh-CN

swftools

必须先启动这两个软件，才干转码

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