Question

我正在尝试运行以下命令：

gpg -e -r recipientname file.txt

通过Java使用ProcessBuilder API。该代码将在以后的工作中使用。

如果我从命令行运行命令，则会得到以下输出：

gpg: [undisclosed]: There is no assurance this key belongs to the named user

sub  rsa2048/[undisclosed] 2019-03-22 [undisclosed] <[undisclosed]>
 Primary key fingerprint: [undisclosed]
      Subkey fingerprint: [undisclosed]

It is NOT certain that the key belongs to the person named
in the user ID.  If you *really* know what you are doing,
you may answer the next question with yes.

Use this key anyway? (y/N)

我输入y，然后生成我的加密文件。

如果我使用Java进行如下操作：

ProcessBuilder builder = new ProcessBuilder("gpg", "-e", "-r", "recipientname", "test.txt")
                    .directory(new File("."))
                    .redirectErrorStream(true);
            final Process process = builder.start();

            OutputStream output = process.getOutputStream();
            output.write("y".getBytes());
            output.flush();
            BufferedReader input = new BufferedReader(new InputStreamReader(process.getInputStream()));
            String line;
            while ((line = input.readLine()) != null) {
                System.out.println(line);
            }
            System.out.println("test");
            process.waitFor();

我只得到输出的第一行：

gpg: [undisclosed]: There is no assurance this key belongs to the named user

并且jvm永远挂起。我怀疑gpg正在引擎盖下启动另一个子流程，该子流程会生成所有额外的输出并要求用户确认，如果是这种情况，我想知道是否仍然可以拦截该子流程并与之交互在我的Java代码中？

请注意，如果可能的话，我宁愿避免使用第三方库。

通过Java ProcessBuilder运行gpg -e

0 个答案: