java调用shell死锁 java调用shell获取返回值

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main
{
	public static void main(String[] args)
	{

		//得到Java进程的相关Runtime运行对象
		Runtime runtime = Runtime.getRuntime();

		try
		{
			//利用exec()方法执行shell 命令 ls -al /root ,并且返回一个Process对象 也就是子进程
			//ps:这里都以最简单的shell命令举例。
			Process process = runtime.exec("ls -al /root"); 

			BufferedReader bufferReader = new BufferedReader(
					new InputStreamReader(process.getInputStream()));

			StringBuffer stringBuffer = new StringBuffer();

			String temp = null;

			while ((temp = bufferReader.readLine()) != null)
			{
					stringBuffer.append(temp);

					stringBuffer.append("\n");
			}

			System.out.println(stringBuffer);

		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}
} 
 
 
 
 
 
 
 
publicclass {
 
privatestaticlogger.getLogger(ShellExcuter.class);
 
 /**
linux命令
@param cmd
@param args
 */
runShell(Stringcmd, String[] args) {
in;
br;
out;
bw;
try {
for (String arg : args) {
cmd = cmd +" "+arg;
 }
//cmds = new String[] {
//sh",
// "-c",
//cmd };
logger.info(cmd);
ProcessRuntime.getRuntime().exec(cmd);
 
BufferedReaderbufferReadernew(new(process.getInputStream()));
String temp = null;
while ((temp = bufferReader.readLine()) != null) {
logger.info(temp);
 }
 
BufferedReaderbufferReader2new(new(process.getErrorStream()));
while ((temp = bufferReader.readLine()) != null) {
logger.info(temp);
 }
 
.close();
.close();
 
.waitFor();
.destroy();
catch (Throwable e) {
logger.error("执行linux命令出错:"e.getMessage());
e.printStackTrace();
 }
 }
 
}