我有一个应用程序想要使用 fileoutputstream 写入文件
这是代码,方法补丁
public static Response patch() {
try {
System.out.println("PATCH");
System.out.println(request.contentType);
String file = params.get("filename");
System.out.println("patch file: " + file);
Map<String, Header> MapOffset = request.headers;
for (Entry<String, Header> entry : MapOffset.entrySet()) {
System.out.println("Header['" + entry.getKey() + "]: "
+ entry.getValue().value());
}
Header offsetParam = MapOffset.get("offset");
Long offset = 0L;
if (offsetParam != null) {
offset = Long.parseLong(offsetParam.value());
}
InputStream input = request.body;
File f = new File(UPLOAD_DIR + System.getProperty("file.separator")
+ file);
System.out.println("address: " + f.getAbsolutePath());
System.out.println("offset: " + offset);
System.out.println("length: " + f.length());
fileBasicUpload(f, offset, input);
Response respon = new Response();
respon.status = OK;
return respon;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
这就是我写文件的地方
private static void fileBasicUpload(File f, Long offset, InputStream input)
throws IOException {
FileOutputStream output = null;
try {
int c = -1;
byte[] b = new byte[1024];
try {
output = new FileOutputStream(f, true);
while ((c = input.read(b)) != -1) {
output.write(b, 0, c);
}
} catch (Exception e) {
System.out.println("Error: " + e.getMessage());
}
} finally {
output.close();
}
}
while ((c = input.read(b)) != -1)
但是当我的应用程序调用时,该行会显示流关闭错误。我不知道如何调用该错误。对不起我糟糕的英语,谢谢