Runtime.getRuntime().exec()执行netstat无法获取输出问题

[r00_a2lBUR]

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

public class CMDUtil 
{
	/**
	 * 执行一个cmd命令
	 * @param cmdCommand cmd命令
	 * @return 命令执行结果字符串，如出现异常返回null
	 */
	public static String excuteCMDCommand(String cmdCommand) 
	{
		StringBuilder stringBuilder = new StringBuilder();
		Process process = null;
		try {			
			process = Runtime.getRuntime().exec(cmdCommand);
			BufferedReader bufferedReader = new BufferedReader(
					new InputStreamReader(process.getInputStream(), "GBK"));
			String line = null;
			while((line=bufferedReader.readLine()) != null) 
			{
				stringBuilder.append(line+"\n");
			}
			return stringBuilder.toString();
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}
	
	/**
	 * 执行一个cmd命令
	 * @param cmdCommand cmd命令
	 * @return 命令执行结果字符串，如出现异常返回null
	 */
	public static String excuteCMDCommand(String[] cmdCommand) 
	{
		StringBuilder stringBuilder = new StringBuilder();
		Process process = null;
		try {			
			process = Runtime.getRuntime().exec(cmdCommand);
			BufferedReader bufferedReader = new BufferedReader(
					new InputStreamReader(process.getInputStream(), "GBK"));
			String line = null;
			while((line=bufferedReader.readLine()) != null) 
			{
				stringBuilder.append(line+"\n");
			}
			return stringBuilder.toString();
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}
	
	/**
	 * 执行bat文件，
	 * @param file bat文件路径
	 * @param isCloseWindow 执行完毕后是否关闭cmd窗口
	 * @return bat文件输出log
	 */
	public static String excuteBatFile(String file, boolean isCloseWindow) 
	{
		String cmdCommand = null;
		if(isCloseWindow) 
		{
			cmdCommand = "cmd.exe /c "+file;
		}else 
		{
			cmdCommand = "cmd.exe /k "+file;
		}
		StringBuilder stringBuilder = new StringBuilder();
		Process process = null;
		try {
			process = Runtime.getRuntime().exec(cmdCommand);
			BufferedReader bufferedReader = new BufferedReader(
					new InputStreamReader(process.getInputStream(), "GBK"));
			String line = null;
			while((line=bufferedReader.readLine()) != null) 
			{
				stringBuilder.append(line+"\n");
			}
			return stringBuilder.toString();
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}
	
	/**
	 * 执行bat文件,新开窗口
	 * @param file bat文件路径
	 * @param isCloseWindow 执行完毕后是否关闭cmd窗口
	 * @return bat文件输出log
	 */
	public static String excuteBatFileWithNewWindow(String file, boolean isCloseWindow) 
	{
		String cmdCommand = null;
		if(isCloseWindow) 
		{
			cmdCommand = "cmd.exe /c start"+file;
		}else 
		{
			cmdCommand = "cmd.exe /k start"+file;
		}
		StringBuilder stringBuilder = new StringBuilder();
		Process process = null;
		try {
			process = Runtime.getRuntime().exec(cmdCommand);
			BufferedReader bufferedReader = new BufferedReader(
					new InputStreamReader(process.getInputStream(), "GBK"));
			String line = null;
			while((line=bufferedReader.readLine()) != null) 
			{
				stringBuilder.append(line+"\n");
			}
			return stringBuilder.toString();
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}
}

public class MainClass 
{
	public static void main(String[] args) {
		String cmd = "ipconfig";
		cmd = "netstat -aon|findstr 128:21";
		//cmd = "netstat -aon";
		String[] cmds = {"netstat","-aon|findstr","128:21"};
		String[] cmds2 = {"netstat","-aon"};
		String result = CMDUtil.excuteCMDCommand(cmd);
		System.out.println(result);
	}
}

上面的代码，cmd = "netstat -aon";的时候，控制台有输出，但是当cmd = "netstat -aon|findstr 128:21";，在cmd窗口是有输出(开发电脑的局域网ip最后是128，并且是21XX端口有tcp连接)，但在Eclipse控制台却没有输出，请教大伙，这个是怎么回事？

[知愚智乐]

同问啊 我也遇到这个问题 没办法 暂时用 > log文件 去看了，有办法直接在程序中取到命令输出吗？