public JobRunner newRunner() {
        try {
            return (JobRunner) appContext.getJobRunnerClass().newInstance();
        } catch (InstantiationException e) {
            LOGGER.error(e.getMessage(), e);
        } catch (IllegalAccessException e) {
            LOGGER.error(e.getMessage(), e);
        }
        return null;
    }
@author Robert HG (254963746@qq.com) on 3/6/15.
lts-tasktracker/src/main/java/com/github/ltsopensource/tasktracker/runner/DefaultRunnerFactory.java