servlets - HttpServletResponse PrintWriter 写入输入流

Question

我有一个 HttpServletResponse 对象，需要编写一个包含在 jar 中的文件。以下代码段对我不起作用。

URI uri = <myclass>.class.getResource("/" + filename).toURI(); 
PrintWriter out = response.getWriter();
File f = new File(uri); 
FileReader bis = new FileReader(f);
char[] buff = new char[1024];
int bytesRead;
// Simple read/write loop.
while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
    out.write(buff, 0, bytesRead);
}

我知道这会起作用

InputStream inputStream = <myclass>.class.getResourceAsStream("/" + filename);

但我无法让 PrintWriter out.write 写入 inputStream。

谁能告诉我如何做到这一点。

谢谢

Answer 1

使用以下方法解决

InputStream inputStream = KCSSchemaController.class.getResourceAsStream("/" + schemaname);

OutputStream output = response.getOutputStream();

ByteStreams.copy(inputStream, output);

output.flush();