监听器是activiti中经常使用的，一般用在启动或者关闭，以及流程扭转的时候。
之前的配置文件中，有这么个配置：
/** * 用于监听流程引擎的启动与关闭 * * @author wsylp * */ @Service("myProcessEngineLifecycleListener") public class MyProcessEngineLifecycleListener implements ProcessEngineLifecycleListener { private static final Logger LOGGER = LoggerFactory.getLogger(ActivitiServiceImpl.class); @Override public void onProcessEngineBuilt(ProcessEngine processEngine) { LOGGER.debug("processEngine:onProcessEngineBuilt{}开始启动", processEngine); LOGGER.info("processEngine:onProcessEngineBuilt:{}开始启动" + processEngine); } @Override public void onProcessEngineClosed(ProcessEngine processEngine) { LOGGER.debug("processEngine:onProcessEngineClosed{}结束流程", processEngine); LOGGER.info("processEngine:onProcessEngineBuilt:{}结束流程" + processEngine); } }此时我们进行查询任务的单元测试，进行观察日志
[09:15:38:575] [DEBUG] - wsylp.service.impl.MyProcessEngineLifecycleListener.onProcessEngineBuilt(MyProcessEngineLifecycleListener.java:22) - processEngine:onProcessEngineBuiltorg.activiti.engine.impl.ProcessEngineImpl@4417af13开始启动 [09:15:38:575] [INFO] - wsylp.service.impl.MyProcessEngineLifecycleListener.onProcessEngineBuilt(MyProcessEngineLifecycleListener.java:23) - processEngine:onProcessEngineBuilt:{}开始启动 org.activiti.engine.impl.ProcessEngineImpl@4417af13 [09:15:38:576] [INFO] - wsylp.log.MyLog.logAfter(MyLog.java:29) - @AfterReturning：org.activiti.engine.ProcessEngineLifecycleListener.onProcessEngineBuilt end. [09:15:38:656] [INFO] - wsylp.log.MyLog.logBegin(MyLog.java:22) - @Before：wsylp.service.ActivitiService.getTasks begin. [09:15:38:657] [DEBUG] - org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33) - [09:15:38:658] [DEBUG] - org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:34) - --- starting TaskQueryImpl -------------------------------------------------------- [09:15:38:658] [DEBUG] - org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:40) - Running command with propagation REQUIRED [09:15:38:718] [DEBUG] - org.apache.ibatis.logging.jdbc.BaseJdbcLogger.debug(BaseJdbcLogger.java:159) - ==> Preparing: select distinct RES.* from ACT_RU_TASK RES order by RES.ID_ asc LIMIT ? OFFSET ? [09:15:38:720] [DEBUG] - org.apache.ibatis.logging.jdbc.BaseJdbcLogger.debug(BaseJdbcLogger.java:159) - ==> Parameters: 2147483647(Integer), 0(Integer) [09:15:38:756] [DEBUG] - org.apache.ibatis.logging.jdbc.BaseJdbcLogger.debug(BaseJdbcLogger.java:159) - <== Total: 3 [09:15:38:756] [DEBUG] - org.activiti.engine.impl.db.DbSqlSession.flush(DbSqlSession.java:611) - flush summary: 0 insert, 0 update, 0 delete. [09:15:38:757] [DEBUG] - org.activiti.engine.impl.db.DbSqlSession.flush(DbSqlSession.java:612) - now executing flush... [09:15:38:763] [DEBUG] - org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:40) - --- TaskQueryImpl finished -------------------------------------------------------- [09:15:38:763] [DEBUG] - org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:41) - [09:15:38:764] [INFO] - wsylp.service.impl.ActivitiServiceImpl.getTasks(ActivitiServiceImpl.java:166) - 任务处理人【zjl】,任务id【22504】,任务名称【总经理[审批]】,任务流程定义id【sequenceFlow:1:7504】, 流程定义key【zjlsp】,任务拥有者【null】 [09:15:38:764] [INFO] - wsylp.service.impl.ActivitiServiceImpl.getTasks(ActivitiServiceImpl.java:166) - 任务处理人【zjl】,任务id【30004】,任务名称【总经理[审批]】,任务流程定义id【sequenceFlow:1:7504】, 流程定义key【zjlsp】,任务拥有者【null】 [09:15:38:765] [INFO] - wsylp.service.impl.ActivitiServiceImpl.getTasks(ActivitiServiceImpl.java:166) - 任务处理人【gy】,任务id【35014】,任务名称【普通[处理]】,任务流程定义id【gateway:1:32504】, 流程定义key【generalApprove】,任务拥有者【null】 [09:15:38:765] [INFO] - wsylp.log.MyLog.logAfter(MyLog.java:29) - @AfterReturning：wsylp.service.ActivitiService.getTasks end. [09:15:38:778] [DEBUG] - org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33) - [09:15:38:779] [DEBUG] - org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:34) - --- starting SchemaOperationProcessEngineClose -------------------------------------------------------- [09:15:38:779] [DEBUG] - org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:40) - Running command with propagation NOT_SUPPORTED [09:15:38:779] [DEBUG] - org.activiti.engine.impl.db.DbSqlSession.flush(DbSqlSession.java:611) - flush summary: 0 insert, 0 update, 0 delete. [09:15:38:779] [DEBUG] - org.activiti.engine.impl.db.DbSqlSession.flush(DbSqlSession.java:612) - now executing flush... [09:15:38:780] [DEBUG] - org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:40) - --- SchemaOperationProcessEngineClose finished -------------------------------------------------------- [09:15:38:780] [DEBUG] - org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:41) - [09:15:38:780] [INFO] - wsylp.log.MyLog.logBegin(MyLog.java:22) - @Before：org.activiti.engine.ProcessEngineLifecycleListener.onProcessEngineClosed begin. [***09:15:38:781] [DEBUG] - wsylp.service.impl.MyProcessEngineLifecycleListener.onProcessEngineClosed(MyProcessEngineLifecycleListener.java:28) - processEngine:onProcessEngineClosedorg.activiti.engine.impl.ProcessEngineImpl@4417af13结束流程 [09:15:38:781] [INFO] - wsylp.service.impl.MyProcessEngineLifecycleListener.onProcessEngineClosed(MyProcessEngineLifecycleListener.java:29) - processEngine:onProcessEngineBuilt:{}结束流程***org.activiti.engine.impl.ProcessEngineImpl@4417af13 [09:15:38:781] [INFO] - wsylp.log.MyLog.logAfter(MyLog.java:29) - @AfterReturning：org.activiti.engine.ProcessEngineLifecycleListener.onProcessEngineClosed end. 从上面的日志中可以看到开始于结束的日志，表示流程正常启动与关闭。
正常的开启流程需要进行设置变量，指定代理人等信息，或者发送短信提醒，都可以使用事件监听器。
[09:38:36:461] [INFO] - wsylp.service.impl.ActivitiListener.notify(ActivitiListener.java:35) - start=========也可以使用spring管理，写入表达式，其中表达式为spring管理的bean的id 
任务监听与开始的事件监听差不多 
package wsylp.service.impl; import org.activiti.engine.delegate.DelegateTask; import org.activiti.engine.delegate.Expression; import org.activiti.engine.delegate.TaskListener; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * 节点监听器，任务监听器，连线监听器 * * @author wsylp * */ public class MyTaskListener implements TaskListener { private static final Logger LOGGER = LoggerFactory.getLogger(ActivitiServiceImpl.class); private static final long serialVersionUID = 6200534335483960408L; private Expression arg; public Expression getArg() { return arg; } public void setArg(Expression arg) { this.arg = arg; } @Override public void notify(DelegateTask delegateTask) { // 实现TaskListener中的方法 String eventName = delegateTask.getEventName(); LOGGER.info("任务监听器:{}", arg.getValue(delegateTask)); if ("create".endsWith(eventName)) { LOGGER.info("create========="); } else if ("assignment".endsWith(eventName)) { LOGGER.info("assignment========"); } else if ("complete".endsWith(eventName)) { LOGGER.info("complete==========="); } else if ("delete".endsWith(eventName)) { LOGGER.info("delete============="); } } } 日志
[10:36:53:622] [INFO] - wsylp.service.impl.MyTaskListener.notify(MyTaskListener.java:35) - 任务监听器:张飒 [10:36:53:626] [INFO] - wsylp.service.impl.MyTaskListener.notify(MyTaskListener.java:41) - complete===========文章来源: activiti流程--监听器