java调用process线程阻塞问题的解决

public void draw(){
        //调用bat脚本进行图像处理
        Process process = null;
        InputStream in = null;
        try {
            process = Runtime.getRuntime().exec("startup.bat");
            //输出测试
//            in = process.getInputStream();
//            String line;
//            BufferedReader br = new BufferedReader(new InputStreamReader(in));
//            while ((line = br.readLine()) != null) {
//                System.out.println(line);
//            }
            //等待
            process.waitFor();
        } catch (Exception e) {
        } finally {
            process.destroy();
        }
    }

public class test {
    public void draw(){
        //调用bat脚本进行图像处理
        Process process = null;
        InputStream in = null;
        try {
            process = Runtime.getRuntime().exec("startup.bat");
            //输出测试
//            in = process.getInputStream();
//            String line;
//            BufferedReader br = new BufferedReader(new InputStreamReader(in));
//            while ((line = br.readLine()) != null) {
//                System.out.println(line);
//            }
            //新启两个线程
            new DealProcessSream(process.getInputStream()).start();
            new DealProcessSream(process.getErrorStream()).start();
            process.waitFor();
        } catch (Exception e) {
        } finally {
            process.destroy();
        }
    }
}

public class DealProcessSream extends Thread {
    private InputStream inputStream;
    public DealProcessSream(InputStream inputStream) {
        this.inputStream = inputStream;
    }
    public void run() {
        InputStreamReader inputStreamReader = null;
        BufferedReader br = null;
        try {
            inputStreamReader = new InputStreamReader(
                    inputStream);
            br = new BufferedReader(inputStreamReader);
            // 打印信息
//            String line = null;
//            while ((line = br.readLine()) != null) {
//                System.out.println(line);
//            }
            // 不打印信息
           while (br.readLine() != null);
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }finally {
            try {
                br.close();
                inputStreamReader.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

Process process = Runtime.getRuntime().exec(shPath);
int exitCode = process .waitFor();

Process shellProcess = null;
    try {
 
      shellProcess = Runtime.getRuntime().exec(shPath);
      shellErrorResultReader = new BufferedReader(new InputStreamReader(shellProcess.getErrorStream()));
      shellInfoResultReader =  new BufferedReader(new InputStreamReader(shellProcess.getInputStream()));
      String infoLine;
      while ((infoLine = shellInfoResultReader.readLine()) != null) {
        logger.info("脚本文件执行信息:{}", infoLine);
      }
      String errorLine;
      while ((errorLine = shellErrorResultReader.readLine()) != null) {
        logger.warn("脚本文件执行信息:{}", errorLine);
      }
      // 等待程序执行结束并输出状态
      exitCode = shellProcess.waitFor();
      if (0 == exitCode) {
        logger.info("脚本文件执行成功:" + exitCode);
      } else {
        logger.error("脚本文件执行失败:" + exitCode);
      }
    } catch (Exception e) {
      logger.error("shell脚本执行错误", e);
    } finally {
      if (null != shellInfoResultReader) {
        try {
          shellInfoResultReader.close();
        } catch (IOException e) {
          logger.error("流文件关闭异常：", e);
        }
      }
      if (null != shellErrorResultReader) {
        try {
          shellErrorResultReader.close();
        } catch (IOException e) {
          logger.error("流文件关闭异常：", e);
        }
      }
      if (null != shellProcess) {
        shellProcess.destroy();
      }
}