可能重复:
need help about process…
当我启动像process = Runtime.getRuntime().exec("gnome-terminal");
这样的进程时,它会启动shell执行。我想停止shell执行并希望从进程重定向I / O,有人可以告诉我该怎么做吗?
我的代码是:
public void start_process()
{
try
{
process= Runtime.getRuntime().exec("gnome-terminal");
pw= new PrintWriter(process.getOutputStream(),true);
br=new BufferedReader(new InputStreamReader(process.getInputStream()));
err=new BufferedReader(new InputStreamReader(process.getErrorStream()));
}
catch (Exception ioe)
{
System.out.println("IO Exception-> " + ioe);
}
}
public void execution_command()
{
if(check==2)
{
try
{
boolean flag=thread.isAlive();
if(flag==true)
thread.stop();
Thread.sleep(30);
thread = new MyReader(br,tbOutput,err,check);
thread.start();
}catch(Exception ex){
JOptionPane.showMessageDialog(null, ex.getMessage()+"1");
}
}
else
{
try
{
Thread.sleep(30);
thread = new MyReader(br,tbOutput,err,check);
thread.start();
check=2;
}catch(Exception ex){
JOptionPane.showMessageDialog(null, ex.getMessage()+"1");
}
}
}
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
command=tfCmd.getText().toString().trim();
pw.println(command);
execution_command();
}
当我在textfield中输入一些命令并按下执行按钮时,我的输出textarea上没有显示任何内容,我如何停止shell执行并重定向输入和输出?
答案 0 :(得分:0)
错误地我写了process = Runtime.getRuntime()。exec(“bash”);而不是process = Runtime.getRuntime()。exec(“gnome-terminal”);