Java에서 Shell호출 방법

Java에서 Shell 호출 시 apache commons-exec를 사용하면 쉽게 shell을 호출하고 shell에 파라미터 전달도 가능하다.

■ 소스

import java.io.ByteArrayOutputStream; import java.util.HashMap; import java.util.Map; import org.apache.commons.exec.CommandLine; import org.apache.commons.exec.DefaultExecuteResultHandler; import org.apache.commons.exec.DefaultExecutor; import org.apache.commons.exec.ExecuteStreamHandler; import org.apache.commons.exec.ExecuteWatchdog; import org.apache.commons.exec.PumpStreamHandler; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.servlet.ModelAndView; import ncd.spring.common.util.PropertyUtil; @Controller public class DeployController { private static final Logger LOGGER = LoggerFactory.getLogger(DeployController.class); @RequestMapping(value = "/admin/deploy.do") public ModelAndView sourceDeploy(@RequestParam("type") String type) throws Exception { LOGGER.info("Start Source Deploy...."); final Map<String, Object> resultMap = new HashMap<String, Object>(); String scriptFile  = PropertyUtil.getString("deploy.script.file"); String confFile = null; if ("oz".equals(type)) { confFile = PropertyUtil.getString("oz.deploy.config.file"); } else { confFile = PropertyUtil.getString("was.deploy.config.file"); } if (scriptFile == null || confFile == null) { resultMap.put("error", "script file or config file is null"); return new ModelAndView("ajaxMultiDataView", resultMap); } LOGGER.info("{},{}", scriptFile, confFile); /** Initiate Executor **/ DefaultExecutor executor = new DefaultExecutor(); ExecuteWatchdog watchDog = new ExecuteWatchdog(60*1000); executor.setWatchdog(watchDog); DefaultExecuteResultHandler resultHandler = new DefaultExecuteResultHandler(); ByteArrayOutputStream bos = new ByteArrayOutputStream(); ExecuteStreamHandler stream = new PumpStreamHandler(bos, bos, null); executor.setStreamHandler(stream); /** Initiate Command Line **/ CommandLine cmdLine = new CommandLine(PropertyUtil.getString("deploy.script.command")); /** Set parameter to command line **/ cmdLine.addArgument(scriptFile); cmdLine.addArgument(confFile); cmdLine.addArgument(type); LOGGER.info("Execute Command :: ", cmdLine.toString()); /** Execute shell **/ try { executor.execute(cmdLine, resultHandler); resultHandler.waitFor(); int exitCode = resultHandler.getExitValue(); String result = bos.toString(); LOGGER.info("Result :: ", result); resultMap.put("result", result); resultMap.put("exitCode", exitCode); } catch(Exception ex) { LOGGER.error(ex.getMessage()); } finally { bos.close(); } ModelAndView mav = new ModelAndView("ajaxMultiDataView", resultMap); return mav; }

Shell의 수행결과를 받기 위해서는 PumpStreamHandeler를 생성하고, executer에 StreamHanlder에 Set한다.