在服务器端代码中，我将缓冲区大小和内容长度设置为File.length()，然后使用FileInputStream打开文件。 稍后使用 HttpResponse.getOutputStream() 获取输出流并转储使用 FileInputStream 读取的数据字节
我正在使用 Apache Tomcat 7.0.52、Java 7
在客户端
文件下载器.java
URL url = new URL("myFileURL");
HttpURLConnection con = (HttpURLConnection) obj.openConnection();
con.setDoInput(true);
con.setConnectTimeout(10000);
con.setReadTimeout(10000);
con.setRequestMethod("GET");
con.setUseCaches(false);
con.setRequestProperty("User-Agent", "Mozilla/5.0");
con.connect();
FileOutputStream fos = new FileOutputStream("filename");
if(con.getResponseCode()==200){
InputStream is = con.getInputStream();
int readVal;
while((readVal=is.read())!=-1) fos.write(readVal);
}
fos.flush()
fos.close();
所以上面的代码无法下载大文件。 在使用 Java 7 的客户端上
最佳答案
你能试试这个吗
FileOutputStream outputStream = new FileOutputStream(fileName);
int bytesRead;
byte[] buffer = new byte[1024];
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
引用自https://stackoverflow.com/a/45453874/4121845
Because you only want to write data that you actually read. Consider the case where the input consists of N buffers plus one byte. Without the len parameter you would write (N+1)*1024 bytes instead of N*1024+1 bytes. Consider also the case of reading from a socket, or indeed the general case of reading: the actual contract of InputStream.read() is that it transfers at least one byte, not that it fills the buffer. Often it can't, for one reason or another.
关于java - 下载大型视频文件被损坏，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/50700146/