检索发布到Java Servlet的二进制数据的一般方法是什么?一个byte []被发布到这个servlet,我想我必须以某种方式解析HttpServletRequest.getInputStream()并拉出byte []内容。有关如何更改以下代码以实现此目的的任何想法?
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
StringBuilder stringBuilder = new StringBuilder();
BufferedReader bufferedReader = null;
try {
InputStream inputStream = request.getInputStream();
if (inputStream != null) {
bufferedReader = new BufferedReader(new InputStreamReader(
inputStream));
char[] charBuffer = new char[128];
int bytesRead = -1;
while ((bytesRead = bufferedReader.read(charBuffer)) > 0) {
stringBuilder.append(charBuffer, 0, bytesRead);
}
} else {
stringBuilder.append("");
}
} catch (IOException ex) {
throw ex;
} finally {
if (bufferedReader != null) {
try {
bufferedReader.close();
} catch (IOException ex) {
throw ex;
}
}
}
String body = stringBuilder.toString();
System.out.println(body);
}
答案 0 :(得分:1)
不要将输入流包装在任何“读取器”中,因为它们会从字节转换为字符,并且您需要字节。
答案 1 :(得分:1)
是肯定的。抛弃所有读者并使用你在第3行传递的InputStream。如果你不理解byte []和InputStream之间的关系,我建议你阅读API文档和一些很好的java教程。