Java 关机

RunTime.exec("Shutdown -s");
Runtime.getRuntime().exec("cmd /c Shutdown -t 10");

        Runtime run = Runtime.getRuntime();
        //run.exec("cmd /k shutdown -s -t 60");
        //run.exec("explorer");
        
        Process process = run.exec("cmd.exe /C E:\ShutdownWindows.bat");
        try
        {
            if(process.waitFor() != 0)
            {
                //如果进程运行结果不为0,表示进程是错误退出的
                //获得进程实例的错误输出
                InputStream streamErr = process.getErrorStream();
                //do something
                
                System.out.println("Err : "+InputStream2String(streamErr));
                if (streamErr != null)
                    streamErr.close();
                
                return;
            }
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
        InputStream streamIn = process.getInputStream();
        String strRst;
        try {
            strRst = InputStream2String(streamIn);
            System.out.println("Output : "+strRst);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        if (streamIn != null)
            streamIn.close();

        try
        {
            String strsCmd = ""C:\Program Files (x86)\Java\jdk1.7.0_25\bin\java.exe" -jar E:\ShutdownWindows.jar";
            //String strsCmd = "cmd shutdown -s -t 30";
            //String strsCmd = "explorer";
            ProcessBuilder builder = new ProcessBuilder(strsCmd);
            
            //设置一个路径
//            if (_strWorkDirectory != null)
//            {
//                builder.directory(new File(_strWorkDirectory));
//                builder.redirectErrorStream(true);
//            }
            
            Process process = builder.start();
            //等待进程执行完毕
            if(process.waitFor() != 0)
            {
                //如果进程运行结果不为0,表示进程是错误退出的
                //获得进程实例的错误输出
                InputStream streamErr = process.getErrorStream();
                //do something
                
                System.out.println(InputStream2String(streamErr));
                if (streamErr != null)
                    streamErr.close();
            }
            
            InputStream streamIn = process.getInputStream();
            String strRst = InputStream2String(streamIn);
            System.out.println(strRst);
            
            if (streamIn != null)
                streamIn.close();
        }
        catch (Exception ex)
        {
            ex.printStackTrace();
        }

上面两种方式，只在 java project 下  弄起来过，servlet中 都没成功。

尝试方式：

　　1、servlet 直接 运行命令 "cmd /c shutdown -t 60" ==> 失败

　　2、bat 中写 shutdown，servlet 调用 bat ==> 失败

　　3、java project 中执行 shutdown，bat 调用 jar，servlet 调用 bat > 失败

public String InputStream2String(InputStream _stream) throws Exception
    {
        String strRst = "";
        byte[] bytes = new byte[1024];
        while (_stream.read(bytes) != -1)
            strRst += new String(bytes);
        return strRst;
    }

InputStream2String

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