如何以Commons Exec的字符串形式捕獲命令的輸出？

Question

Commons exec提供了一個PumpStreamHandler，它將標準輸出重定向到Java進程的標準輸出。如何將命令的輸出捕獲到字符串中？

Answer 1

He're我發現了什麼：

import java.io.ByteArrayOutputStream; 
import org.apache.commons.exec.CommandLine; 
import org.apache.commons.exec.DefaultExecutor; 
import org.apache.commons.exec.Executor; 
import org.apache.commons.exec.PumpStreamHandler; 

public String execToString(String command) throws Exception { 
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); 
    CommandLine commandline = CommandLine.parse(command); 
    DefaultExecutor exec = new DefaultExecutor(); 
    PumpStreamHandler streamHandler = new PumpStreamHandler(outputStream); 
    exec.setStreamHandler(streamHandler); 
    exec.execute(commandline); 
    return(outputStream.toString()); 
}