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
发布者：全栈程序员-站长，转载请注明出处：https://javaforall.net/115691.html原文链接：https://javaforall.net
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