PumpStreamHandler可以实时捕获过程输出 [英] PumpStreamHandler can capture the process output in realtime
本文介绍了PumpStreamHandler可以实时捕获过程输出的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我尝试通过apache-commons-exec捕获python进程输出.但是看起来它不会打印输出,只有在python进程完成后才显示输出.
I try to capture a python process output via apache-commons-exec. But it looks like it won't print the output, the output is only displayed after I the python process is finished.
这是我的Java代码
CommandLine cmd = CommandLine.parse("/Users/jzhang/anaconda/bin/python");
cmd.addArgument("/Users/jzhang/a.py");
DefaultExecutor executor = new DefaultExecutor();
ExecuteWatchdog watchDog = new ExecuteWatchdog(ExecuteWatchdog.INFINITE_TIMEOUT);
executor.setWatchdog(watchDog);
executor.execute(cmd);
这是我要执行的python代码(我仅在python进程退出后才获得输出,但是我想要的是实时获取输出)
And this is the python code I want to execute (I only get the output after the python process is exited, but what I want is to get the output in real time)
for i in range(1,10):
print(i)
import time
time.sleep(10)
推荐答案
我找到了答案,我应该将set flush设置为true.例如
I find the answner, I should use set flush to true. E.g.
print('hello world', flush=True)
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