我正在尝试读取由我的应用程序创建的进程（webtorrent-cli，在NodeJS上运行）的输出。我正在使用this库进行流程管理。 API允许传递OutputStream，该ByteArrayOutputStream将接收来自流程的输出。我正在传递String的实例，每n秒读取其内容为UTF-8 import org.zeroturnaround.exec.ProcessExecutor;
import org.zeroturnaround.exec.ProcessResult;
import java.io.*;
import java.util.concurrent.*;
public class General {
private static Thread runProcess() {
final Object LOCK = new Object();
return new Thread(() -> {
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ProcessExecutor executor = new ProcessExecutor()
.command("\"node/webtorrent.cmd\"",
"download",
"\"magnet:?xt=urn:btih:08ada5a7a6183aae1e09d831df6748d566095a10&dn=Sintel\"",
"--select 1")
.destroyOnExit()
.redirectOutput(baos)
.readOutput(true);
Future <ProcessResult> ft = executor.start().getFuture();
// Schedule a service to print the content of baos each second
final ScheduledExecutorService service = Executors.newSingleThreadScheduledExecutor();
service.scheduleAtFixedRate(() -> {
synchronized (LOCK) {
try {
String str = baos.toString("UTF-8");
System.out.println("-----------------------------------------------------------------------");
System.out.println(str);
System.out.println("-------TRIMMED");
System.out.println(str.trim());
System.out.println("-----------------------------------------------------------------------");
baos.reset();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
}, 0, 1, TimeUnit.SECONDS);
ft.get();
// Shutdown
service.shutdown();
} catch (IOException | InterruptedException | ExecutionException ioe) {
ioe.printStackTrace();
}
});
}
public static void main(String[] args) throws InterruptedException {
Thread process = runProcess();
process.start();
process.join();
}
}
，然后进一步处理它。这是简化的代码：
-----------------------------------------------------------------------
Downloading: Sintel
Server running at: http://localhost:8000/5
Downloading to: D:\justtest
Speed: 167 KB/s Downloaded: 786 KB/129 MB Uploaded: 0 B
Running time: 7 seconds Time remaining: 13 minutes Peers: 6/7
S 196.221.61.235:6881 0 B 0 B/s 0 B/s
... and 6 more
-------TRIMMED
[32mDownloading: Sintel
Server running at: http://localhost:8000/5
Downloading to: D:\justtest
Speed: 167 KB/s Downloaded: 786 KB/129 MB Uploaded: 0 B
Running time: 7 seconds Time remaining: 13 minutes Peers: 6/7
S 196.221.61.235:6881 0 B 0 B/s 0 B/s
... and 6 more
-----------------------------------------------------------------------
下载开始后，这是输出的快照：
[32m请注意，当修剪字符串时，在开头会附加ByteArrayOutputStream。我不知道那是哪里来的。我猜测[32m中已经存在垃圾，但是我应该如何摆脱它呢？这确实让我很难受。我必须用换行符分隔字符串并提取每列的值（例如：下载，服务器在等运行）。如果我分割字符串并继续前进，事情将变得更加混乱。对于每一列的值，我得到[32m，而这次{"{{"errorResponse":{"statusCode":"400", "status":"Bad Request", "messageCode":"MANAGE-INVALIDPAYLOAD", "message":"MANAGE-INVALIDPAYLOAD: (err:FOER0000) Payload has errors in structure,
content-type or values. XDMP-VALIDATEUNEXPECTED: (err:XQDY0027) validate strict { fn:trace($struct, $trace-event) } -- Invalid node: Found tprop:directory-scope but expected ((tprop
:document-content|tprop:any-property-content|tprop:any-custom-property-content|tprop:property-content),tprop:when?) at fn:doc(\"\")/tprop:trigger-properties/tprop:event/tprop:data-ev
ent/tprop:directory-scope using schema \"manage-trigger-properties.xsd\""}}
}"}
变得不同（例如23，它是2-4个随机字母，其中肯定包含数字和可选的其他字符，例如[]）。如何清理输出？