java进程执行linux命令

客官°小女子只卖身不卖艺 2023-06-23 14:21 2阅读 0赞

在项目中需要在java中查询相关进程信息，故需要在java中执行shell脚本，ps -ef | grep java |grep xxx

/**
         * <获取具体服务的在线状态>
         *
         * @param serviceName 服务名
         * @return 服务状态
         * @throws
         */
        private Boolean getServiceState(String serviceName)
        {
            LOGGER.info("serviceName is {}.", serviceName);
    
            Boolean state = false;
    
            String[] cmds = {"/bin/sh", "-c", "ps -ef | grep java | grep " + serviceName};
            Reader reader = null;
            BufferedReader bReader = null;
            InputStream inputStream = null;
            List<String> cmdOutput = new ArrayList<>();
            String line = null;
            try
            {
                Process process = Runtime.getRuntime().exec(cmds);
                inputStream = process.getInputStream();
                reader = new InputStreamReader(inputStream);
                bReader = new BufferedReader(reader);
    
                while ((line = bReader.readLine()) != null)
                {
                    cmdOutput.add(line);
                }
                LOGGER.info("cmdoutput is {}.", cmdOutput);
                if (null != cmdOutput && cmdOutput.size() == 2)
                {
                    state = true;
                }
    
                process.waitFor();
    
                return state;
            }
            catch (Exception ex)
            {
                LOGGER.error("get service state error.");
                return state;
            }
            finally
            {
                try
                {
                    if (null != inputStream)
                    {
                        inputStream.close();
                    }
                    if (null != reader)
                    {
                        reader.close();
                    }
                    if (null != bReader)
                    {
                        bReader.close();
                    }
                }
                catch (IOException e)
                {
                    LOGGER.error("close inputstream error.");
                    return state;
                }
            }
        }