牛牛發現問題的原因，Process process=Runtime.getRuntime().exec("");中產生停滯（阻塞，blocking）。
這個是因為Runtime.getRuntime().exec()要自己去處理stdout和stderr的。
所以如果你想讓程序正常運行的話，請務必將上述用別的線程流取走。
>test.bat
haha
exit 99
>RuntimeTest.java
public class RuntimeTest {
public static void main(String[] args) {
try {
Process process=Runtime.getRuntime().exec("test.bat");
StreamGobbler errorGobbler = new StreamGobbler(process.getErrorStream(), "ERROR");
// kick off stderr
errorGobbler.start();
StreamGobbler outGobbler = new StreamGobbler(process.getInputStream(), "STDOUT");
// kick off stdout
outGobbler.start();
process.waitFor();
System.out.println(process.exitValue());
} catch(Exception e) {}
}
}
>StreamGobbler.java
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
public class StreamGobbler extends Thread {
InputStream is;
String type;
OutputStream os;
StreamGobbler(InputStream is, String type) {
this(is, type, null);
}
StreamGobbler(InputStream is, String type, OutputStream redirect) {
this.is = is;
this.type = type;
this.os = redirect;
}
public void run() {
try {
PrintWriter pw = null;
if (os != null)
pw = new PrintWriter(os);
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String line=null;
while ( (line = br.readLine()) != null) {
if (pw != null)
pw.println(line);
System.out.println(type + ">" + line);
}
if (pw != null)
pw.flush();
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
}
自己mark一下