java - BufferedOutputStream 写入垃圾数据

Question

我正在编写下载 servlet，它读取 html 文件并写入 servletOutputStream，传输的文件末尾的问题是添加一些垃圾数据，对此有何建议，

下面是我为此使用的代码

---

        int BUFFER_SIZE = 1024 * 8;
        servOut   = response.getOutputStream();
        bos       = new BufferedOutputStream(servOut);
        fileObj = new File(file);
        fileToDownload = new FileInputStream(fileObj);
        bis = new BufferedInputStream(fileToDownload);
        response.setContentType("application/text/html");
          response.setHeader("ContentDisposition","attachment;filename="+dump+".html");
        byte[] barray = new byte[BUFFER_SIZE];
        while ((bis.read(barray, 0, BUFFER_SIZE)) != -1) {
            bos.write(barray, 0, BUFFER_SIZE);
        }
        bos.flush();

Answer 1

bis.read 返回读取的字节数。您需要在 write 调用中考虑到这一点。

类似于:

int rd;
while ((rd=bis.read(...)) != -1) {
     bos.write(..., rd);
}