如何读取JSch命令输出？

在等待命令完成的同时，必须连续读取输出。否则，如果命令产生足够的输出以填充输出缓冲区，则该命令将挂起，等待缓冲区被消耗，这将永远不会发生。这样您就陷入僵局。

以下示例在监视命令状态的同时连续读取stdout和stderr。它基于官方的JSch

exec.java

ChannelExec channel = (ChannelExec)session.openChannel("exec");channel.setCommand(    "for((i=1;i<=10000;i+=2)); do echo "Long output - $i"; done ; " +    "echo error output >&2");InputStream commandOutput = channel.getExtInputStream();StringBuilder outputBuffer = new StringBuilder();StringBuilder errorBuffer = new StringBuilder();InputStream in = channel.getInputStream();InputStream err = channel.getExtInputStream();channel.connect();byte[] tmp = new byte[1024];while (true) {    while (in.available() > 0) {        int i = in.read(tmp, 0, 1024);        if (i < 0) break;        outputBuffer.append(new String(tmp, 0, i));    }    while (err.available() > 0) {        int i = err.read(tmp, 0, 1024);        if (i < 0) break;        errorBuffer.append(new String(tmp, 0, i));    }    if (channel.isClosed()) {        if ((in.available() > 0) || (err.available() > 0)) continue;         System.out.println("exit-status: " + channel.getExitStatus());        break;    }    try {       Thread.sleep(1000);    } catch (Exception ee) {    }}System.out.println("output: " + outputBuffer.toString());System.out.println("error: " + errorBuffer.toString());channel.disconnect();

如果在

while (!channel.isClosed()) {}

channel.connect();

i

for