我有一个带有Eclipse Java Swing的界面,该界面有按钮和编辑器窗格。当我单击“编译”按钮时,我在后台运行命令行,然后在命令行上按所有结果的编辑器面板区域。我尝试使用textarea是因为我无法使用编辑器窗格执行此操作。但是现在它仅打印“最后一行”。如何解决此问题?
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
Runtime rt = Runtime.getRuntime();
Process proc = null;
try {
proc = rt.exec("cmd /c cd process.txt");
} catch (IOException e3) {
// TODO Auto-generated catch block
e3.printStackTrace();
}
BufferedReader stdInput = new BufferedReader(new InputStreamReader(proc.getInputStream()));
BufferedReader stdError = new BufferedReader(new InputStreamReader(proc.getErrorStream()));
// Read the output from the command
System.out.println("Here is the standard output of the command:\n");
String s = null;
try {
while ((s = stdInput.readLine()) != null) {
textArea.setText("\n"+s);
}
} catch (IOException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
// Read any errors from the attempted command
System.out.println("Here is the standard error of the command (if any):\n");
try {
while ((s = stdError.readLine()) != null) {
textArea.setText("\n"+s);
}
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
答案 0 :(得分:0)
您每次都在重置文本,因此仅保留最后一行。这样做:
StringBuilder builder = new StringBuilder()
try {
while ((s = stdInput.readLine()) != null) {
builder.append('\n').append(s);
}
while ((s = stdError.readLine()) != null) {
builder.append('\n').append(s);
}
textArea.setText(builder.toString();
} catch (IOException e2) {
e2.printStackTrace();
}