Activiti6.0(三)引擎配置

引擎配置類介紹

  • ProcessEngineConfigUration
    查找并解析xml配置文件activiti.cfrg.xml
    提供多個靜態(tài)方法配置對象
    實現(xiàn)幾個基于不通場景的子類

  • 靜態(tài)方法創(chuàng)建配置對象

  • 默認路徑加載一個資源配置文件構(gòu)造對象:ProcessEngineConfiguration.createProcessEngineConfigurationFromResourceDefault()
  • 指定目錄加載一個資源配置文件構(gòu)造對象
    ProcessEngineConfiguration.createProcessEngineConfigurationFromResource(String)
  • 指定目錄和修改id類型加載一個資源配置文件構(gòu)造對象
    ProcessEngineConfiguration.createProcessEngineConfigurationFromResource(String,String)
  • 通過流加載一個資源配置文件構(gòu)造對象
    ProcessEngineConfiguration.createProcessEngineConfigurationFromInputStream(InputStream)
  • 通過流和修改id類型加載一個資源配置文件構(gòu)造對象
    ProcessEngineConfiguration.createProcessEngineConfigurationFromInputStream(InputStream,String)
  • 獨立的引擎配置對象
    ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration()
  • 通過內(nèi)存數(shù)據(jù)庫構(gòu)造對象
    ProcessEngineConfiguration.createStandaloneInMemProcessEngineConfiguration()
  • 流程引擎配置及子類
    ProcessEngineConfiguration
  • ProcessEngineConfigurationImpl 抽象類配置了ProcessEngineConfiguration的戶型
  • StandaloneProcessEngineConfiguration 通過new的方式創(chuàng)建對象
  • SpringProcessEngineConfiguration 基于spring集成完成擴展

創(chuàng)建流程引擎配置-創(chuàng)建maven activiti腳手架

  • 打開activiti6.0源碼 cd tooling/archetypes/
  • mvn clean install
  • 添加main/java 與main/resources 目錄


    image.png
  • 把helloworld項目里面到main函數(shù)與配置文件復(fù)制過來,并修改archetype-metadata.xml


    image.png
  • 修改main函數(shù)里面到參數(shù)


    image.png
  • cd activiti-archetype-unittest/
  • mvn clean install
  • 添加到maven腳手架


    image.png

創(chuàng)建流程引擎配置 config_samples

創(chuàng)建新的項目并創(chuàng)建子模塊選擇自己創(chuàng)建的腳手架


image.png

測試其他引擎配置類

public class ConfigTest {

    private static  final Logger logger= LoggerFactory.getLogger(ConfigTest.class);

    @Test
    public void testConfig1(){
        //基于activiti.cfg.xml 并創(chuàng)建基于內(nèi)存的h2數(shù)據(jù)庫對象依賴spring容器創(chuàng)建
        ProcessEngineConfiguration cfg = ProcessEngineConfiguration.createProcessEngineConfigurationFromResourceDefault();
        logger.info("configuration = {}",cfg);

    }

    @Test
    public void testConfig2(){
        //獨立的引擎配置對象
        ProcessEngineConfiguration cfg = ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration();
        logger.info("configuration = {}",cfg);

    }
}

流程引擎數(shù)據(jù)庫配置

  • 缺省默認配置,使用H2內(nèi)存數(shù)據(jù)庫
  • 配置jdbc屬性,使用mybatis鏈接池
  • 配置DataSource,可自選第三方實現(xiàn)

配置jdbc屬性,使用mybatis鏈接池

基本配置
jdbcUrl、jdbcDriver、jdbcUsername、jdbcPassword
鏈接池配置
jdbcMaxActiveConnections、jdbcMaxIdleConnections、jdbcMaxCheckoutTime、jdbcMaxWaitTime

配置DataSource,可自選第三方實現(xiàn)

  • Druid 為監(jiān)控而生的數(shù)據(jù)庫鏈接池來自阿里
  • Dbcp 老牌數(shù)據(jù)源鏈接池,穩(wěn)定可靠,Tomcat自帶
  • HikarIcp 來自日本的極速數(shù)據(jù)源鏈接池,spring默選

Druid鏈接池activiti.cfg.xml配置


image.png

數(shù)據(jù)庫更新策略

配置DatabaseSchemaUpdate

  • false:啟動時檢查數(shù)據(jù)庫版本,發(fā)生不匹配拋異常,適用于生產(chǎn)環(huán)境
  • true:啟動時自動檢查并更新數(shù)據(jù)庫表,不存在創(chuàng)建,適用與開發(fā)環(huán)境
  • create-drop:啟動時創(chuàng)建數(shù)據(jù)庫表結(jié)構(gòu),結(jié)束時刪除表結(jié)構(gòu),適用于測試環(huán)境

引擎配置數(shù)據(jù)庫Demo

通過修改 activiti.cfg.xml 把默認的H2數(shù)據(jù)庫改成mysql數(shù)據(jù)庫

創(chuàng)建測試類

public class ConfigDBTest {
    private static  final Logger logger= LoggerFactory.getLogger(ConfigDBTest.class);

    @Test
    public void  testConfig1(){
        ProcessEngineConfiguration cfg = ProcessEngineConfiguration.createProcessEngineConfigurationFromResourceDefault();
        logger.info("configuration = {}",cfg);
        ProcessEngine processEngine = cfg.buildProcessEngine();
        logger.info("獲取流程引擎 {}",processEngine.getName());
        processEngine.close();
    }

}

修改 activiti.cfg.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans.xsd">

  <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration">
    <property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/activiti6unit?useUnicode=true&amp;characterEncoding=utf8&amp;useSSL=false&amp;autoReconnect=true&amp;failOverReadOnly=false" />
    <property name="jdbcDriver" value="com.mysql.jdbc.Driver" />
    <property name="jdbcUsername" value="root" />
    <property name="jdbcPassword" value="root" />
    <!--數(shù)據(jù)庫更新策略-->
    <property name="databaseSchemaUpdate" value="true"/>
  </bean>

</beans>

通過修改創(chuàng)建新的配置文件并指定把鏈接方式改成druid鏈接

創(chuàng)建一個新的配置文件


image.png

activiti_druid.cfg.xml文件內(nèi)容

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans.xsd">

  <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration">
    <!--數(shù)據(jù)庫更新策略-->
    <property name="databaseSchemaUpdate" value="true"/>
    <!--數(shù)據(jù)源-->
    <property name="dataSource" ref="dataSource"/>
    <!--是否需要歷史數(shù)據(jù)-->
    <property name="dbHistoryUsed" value="true"/>
    <!--是否需要用戶數(shù)據(jù)-->
    <property name="dbIdentityUsed" value="true"/>
    <!--給表加前綴-->
    <property name="databaseTablePrefix" value="T_"/>-

  </bean>

  <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
    <property name="url" value="jdbc:mysql://127.0.0.1:3306/activiti6unit?useUnicode=true&amp;characterEncoding=utf8&amp;useSSL=false&amp;autoReconnect=true&amp;failOverReadOnly=false"/>
    <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
    <property name="username" value="root"/>
    <property name="password" value="root"/>
    <property name="initialSize" value="2"/>
    <property name="maxActive" value="10"/>
  </bean>

</beans>

讀取配置文件

public class ConfigDBTest {
    private static  final Logger logger= LoggerFactory.getLogger(ConfigDBTest.class);
    @Test
    public void  testConfig2(){
        ProcessEngineConfiguration cfg = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti_druid.cfg.xml");
        logger.info("configuration = {}",cfg);
        ProcessEngine processEngine = cfg.buildProcessEngine();
        logger.info("獲取流程引擎 {}",processEngine.getName());
        processEngine.close();
    }

}

日志記錄配置開啟mdc日志記錄

加 LogMDC.setMDCEnabled(true);當出現(xiàn)異常時會在日志顯示流程id等信息

public class ConfigMDCTest {
    private static  final Logger logger= LoggerFactory.getLogger(ConfigMDCTest.class);

    @Rule
    public ActivitiRule activitiRule = new ActivitiRule("activiti_mdc.cfg.xml");



    @Test
    @Deployment(resources = {"com/guosh/activiti/my-process.bpmn20.xml"})
    public void test() {
        LogMDC.setMDCEnabled(true);

        ProcessInstance processInstance = activitiRule.getRuntimeService().startProcessInstanceByKey("my-process");
        assertNotNull(processInstance);
        Task task = activitiRule.getTaskService().createTaskQuery().singleResult();
        assertEquals("Activiti is awesome!", task.getName());
        activitiRule.getTaskService().complete(task.getId());
    }

}

通過攔截器設(shè)置MDC

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans.xsd">

  <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration">
    <property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/activiti6unit?useUnicode=true&amp;characterEncoding=utf8&amp;useSSL=false&amp;autoReconnect=true&amp;failOverReadOnly=false" />
    <property name="jdbcDriver" value="com.mysql.jdbc.Driver" />
    <property name="jdbcUsername" value="root" />
    <property name="jdbcPassword" value="root" />
    <!--數(shù)據(jù)庫更新策略-->
    <property name="databaseSchemaUpdate" value="true"/>
    <!--自定義攔截每次執(zhí)行流程都打印流程id-->
    <property name="commandInvoker" ref="commandInvoker"/>
  </bean>
  <bean id="commandInvoker" class="com.guosh.activiti.interceptor.MDCCommandInvoker"/>
</beans>

public class MDCCommandInvoker extends DebugCommandInvoker {

    private static final Logger logger = LoggerFactory.getLogger(DebugCommandInvoker.class);

    @Override
    public void executeOperation(Runnable runnable) {
        boolean mdcEnabled = LogMDC.isMDCEnabled();
        LogMDC.setMDCEnabled(true);
        if (runnable instanceof AbstractOperation) {
            AbstractOperation operation = (AbstractOperation) runnable;

            if (operation.getExecution() != null) {
                LogMDC.putMDCExecution(operation.getExecution());
            }

        }

        super.executeOperation(runnable);
        LogMDC.clear();
        if(!mdcEnabled){
            LogMDC.setMDCEnabled(false);
        }
    }

}

歷史記錄配置

配置HistoryLevel(流程結(jié)束后的歷史記錄)

  • none:不記錄歷史流程,性能高,流程結(jié)束后不可讀取
  • activiti:歸檔流程實例,流程變量不同步(能看到歷史內(nèi)容歷史活動)
  • audit:默認值,在activiti基礎(chǔ)上同步變量值,保存表單屬性(能看到歷史表單,歷史詳情)
  • full:性能較差,記錄所有實例和變量細節(jié)變化(上面基礎(chǔ)上能看到詳情的變化)

測試文件

public class ConfigMDCTest {
    private static  final Logger logger= LoggerFactory.getLogger(ConfigMDCTest.class);

    @Rule
    public ActivitiRule activitiRule = new ActivitiRule("activiti_history.cfg.xml");


    @Test
    @Deployment(resources = {"com/guosh/activiti/my-process.bpmn20.xml"})
    public void test() {
        //啟動流程
        startProcessInstance();

        //修改變量
        changeVariable();

        //提交表單task
        submitTaskForm();


        //輸出歷史內(nèi)容
        //輸出歷史活動
        showHistoryActivity();

        //歷史變量
        showHistoryVaiable();


        //輸出歷史用戶任務(wù)
        showHistoryTask();

        //歷史表單詳情
        showHistoryForm();


        //輸出歷史詳情
        showHistoryDetail();
    }

    private void showHistoryDetail() {
        List<HistoricDetail> historicDetails = activitiRule.getHistoryService().createHistoricDetailQuery().list();
        for (HistoricDetail historicDetail:historicDetails) {
            logger.info("historicDetail = {}",historicDetail);
        }
        logger.info("historicDetails.size = {}",historicDetails.size());
    }

    private void showHistoryForm() {
        List<HistoricDetail> historicDetailsFrom = activitiRule.getHistoryService().createHistoricDetailQuery().formProperties().list();
        for (HistoricDetail historicDetail:historicDetailsFrom) {
            logger.info("historicDetail = {}",historicDetail);
        }
        logger.info("historicDetailsFrom.size = {}",historicDetailsFrom.size());
    }

    private void showHistoryTask() {
        List<HistoricTaskInstance> historicTaskInstances = activitiRule.getHistoryService().createHistoricTaskInstanceQuery().list();
        for (HistoricTaskInstance historicTaskInstance:historicTaskInstances) {
            logger.info("historicTaskInstance = {}",historicTaskInstance);
        }
        logger.info("historicTaskInstances.size = {}",historicTaskInstances.size());
    }

    private void showHistoryVaiable() {
        List<HistoricVariableInstance> historicVariableInstances = activitiRule.getHistoryService().createHistoricVariableInstanceQuery().list();
        for (HistoricVariableInstance historicActivityInstance:historicVariableInstances) {
            logger.info("historicActivityInstance = {}",historicActivityInstance);
        }
        logger.info("historicVariableInstances.size = {}",historicVariableInstances.size());
    }

    private void showHistoryActivity() {
        List<HistoricActivityInstance> historicActivityInstances = activitiRule.getHistoryService().createHistoricActivityInstanceQuery().list();
        for (HistoricActivityInstance historicActivityInstance:historicActivityInstances) {
            logger.info("historicActivityInstance = {}",historicActivityInstance);
        }
        logger.info("historicActivityInstance.size = {}",historicActivityInstances.size());
    }

    private void submitTaskForm() {
        Task task = activitiRule.getTaskService().createTaskQuery().singleResult();
        Map<String,String> properties= Maps.newHashMap();
        properties.put("formKey1","valuef1");
        properties.put("formKey2","valuef2");
        activitiRule.getFormService().submitTaskFormData(task.getId(),properties);
    }

    private void changeVariable() {
        List<Execution> executions = activitiRule.getRuntimeService().createExecutionQuery().listPage(0, 100);
        for (Execution execution:executions) {
            logger.info("execution = {}",execution);
        }
        logger.info("execution.size = {}", executions.size());
        String id=executions.iterator().next().getId();
        activitiRule.getRuntimeService().setVariable(id,"keyStart1","value1_");
    }

    private void startProcessInstance() {
        Map<String,Object> params= Maps.newHashMap();
        params.put("keyStart1","value1");
        params.put("keyStart2","value2");

        ProcessInstance processInstance = activitiRule.getRuntimeService().startProcessInstanceByKey("my-process",params);
    }

}
<beans xmlns="http://www.springframework.org/schema/beans" 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans.xsd">

  <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration">
    <property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/activiti6unit?useUnicode=true&amp;characterEncoding=utf8&amp;useSSL=false&amp;autoReconnect=true&amp;failOverReadOnly=false" />
    <property name="jdbcDriver" value="com.mysql.jdbc.Driver" />
    <property name="jdbcUsername" value="root" />
    <property name="jdbcPassword" value="root" />
    <!--數(shù)據(jù)庫更新策略-->
    <property name="databaseSchemaUpdate" value="true"/>
    <!--自定義攔截每次執(zhí)行流程都打印流程id-->
    <property name="commandInvoker" ref="commandInvoker"/>
    <!--查看歷史的級別-->

    <!--所有歷史都看不到-->
    <!--<property name="history" value="none"/>-->
    <!--能查看歷史活動歷史變量-->
    <!--<property name="history" value="activity"/>-->
    <!--能查看到所有,但是查看不到數(shù)據(jù)的修改記錄-->
    <!--<property name="history" value="audit"/>-->
    <property name="history" value="full"/>


  </bean>
  <bean id="commandInvoker" class="com.guosh.activiti.interceptor.MDCCommandInvoker"/>
</beans>

事件處理及監(jiān)聽器配置

事件處理

enableDatabaseEventLogging 作用監(jiān)聽變化記錄變化日志

public class ConfigEventLogTest {
    private static  final Logger logger= LoggerFactory.getLogger(ConfigEventLogTest.class);

    @Rule
    public ActivitiRule activitiRule = new ActivitiRule("activiti_evenlog.cfg.xml");


    @Test
    @Deployment(resources = {"com/guosh/activiti/my-process.bpmn20.xml"})
    public void test() {
        ProcessInstance processInstance = activitiRule.getRuntimeService().startProcessInstanceByKey("my-process");
        Task task = activitiRule.getTaskService().createTaskQuery().singleResult();
        assertEquals("Activiti is awesome!", task.getName());
        activitiRule.getTaskService().complete(task.getId());
        //根據(jù)流程id查詢
        List<EventLogEntry> envenLogEntrys = activitiRule.getManagementService()
                .getEventLogEntriesByProcessInstanceId(processInstance.getId());

        for (EventLogEntry eventLogEntry:envenLogEntrys) {
            logger.info("eventLogEntry.type = {},eventLogEntry.data = {}",eventLogEntry.getType(),eventLogEntry.getData());

        }
        logger.info("envenLogEntrys.sice = {},eventLogEntry.data = {}",envenLogEntrys.size());

    }

}
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans.xsd">

  <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration">
    <property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/activiti6unit?useUnicode=true&amp;characterEncoding=utf8&amp;useSSL=false&amp;autoReconnect=true&amp;failOverReadOnly=false" />
    <property name="jdbcDriver" value="com.mysql.jdbc.Driver" />
    <property name="jdbcUsername" value="root" />
    <property name="jdbcPassword" value="root" />
    <!--數(shù)據(jù)庫更新策略-->
    <property name="databaseSchemaUpdate" value="true"/>
    <!--自定義攔截每次執(zhí)行流程都打印流程id-->
    <property name="commandInvoker" ref="commandInvoker"/>
    <!--事件監(jiān)聽器-->
    <property name="enableDatabaseEventLogging" value="true"/>

  </bean>
  <bean id="commandInvoker" class="com.guosh.activiti.interceptor.MDCCommandInvoker"/>
</beans>

監(jiān)聽器配置

image.png
image.png
  • 配置Listener
  • eventListeners: 監(jiān)聽所有事件派發(fā)通知
  • typedEventListeners:監(jiān)聽指定事件類型的通知
  • activiti:eventListener:只監(jiān)聽特定的流程定義事件
  • 相關(guān)Api
  • ActivitiEvent:事件對象
  • ActivitiEventListener:監(jiān)聽器
  • ActivitiEventType:事件類型

1.注冊監(jiān)聽第一種寫法

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans.xsd">

  <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration">
    <property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/activiti6unit?useUnicode=true&amp;characterEncoding=utf8&amp;useSSL=false&amp;autoReconnect=true&amp;failOverReadOnly=false" />
    <property name="jdbcDriver" value="com.mysql.jdbc.Driver" />
    <property name="jdbcUsername" value="root" />
    <property name="jdbcPassword" value="root" />
    <!--數(shù)據(jù)庫更新策略-->
    <property name="databaseSchemaUpdate" value="true"/>
    <!--第一種方式-->
    <property name="eventListeners">
      <list>
        <bean class="com.guosh.activiti.event.ProcessEventListener"/>
      </list>
    </property>

</beans>
public class ProcessEventListener implements ActivitiEventListener {
    private static  final Logger logger= LoggerFactory.getLogger(ProcessEventListener.class);

    @Override
    public void onEvent(ActivitiEvent event) {
        ActivitiEventType eventType = event.getType();
        //判斷如果是流程啟動
        if(ActivitiEventType.PROCESS_STARTED.equals(eventType)){
            logger.info("流程啟動 {} \t {}",event.getType(),event.getProcessInstanceId());
        }
        //流程結(jié)束
        else if(ActivitiEventType.PROCESS_COMPLETED.equals(eventType)){
            logger.info("流程結(jié)束 {} \t {}",event.getType(),event.getProcessInstanceId());

        }
    }

    @Override
    public boolean isFailOnException() {
        return false;
    }
}

2.注冊監(jiān)聽第二種寫法

    <property name="typedEventListeners">
      <map>
        <!--流程啟動-->
        <entry key="PROCESS_STARTED">
          <list>
            <bean class="com.guosh.activiti.event.ProcessEventListener"/>
          </list>
        </entry>
      </map>
    </property>

3.自定義監(jiān)聽

public class ConfigEventListenerTest {
    private static  final Logger logger= LoggerFactory.getLogger(ConfigEventListenerTest.class);

    @Rule
    public ActivitiRule activitiRule = new ActivitiRule("activiti_evenlistener.cfg.xml");


    @Test
    @Deployment(resources = {"com/guosh/activiti/my-process.bpmn20.xml"})
    public void test() {
        ProcessInstance processInstance = activitiRule.getRuntimeService().startProcessInstanceByKey("my-process");
        Task task = activitiRule.getTaskService().createTaskQuery().singleResult();
        assertEquals("Activiti is awesome!", task.getName());
        activitiRule.getTaskService().complete(task.getId());

        //發(fā)出一個自定義事件
        activitiRule.getRuntimeService().dispatchEvent(new ActivitiActivityEventImpl(ActivitiEventType.CUSTOM));

    }

}
public class CustomEventListener implements ActivitiEventListener {
    private static  final Logger logger= LoggerFactory.getLogger(CustomEventListener.class);

    @Override
    public void onEvent(ActivitiEvent event) {
        ActivitiEventType eventType = event.getType();
        //判斷如果是自定義的事件
        if(ActivitiEventType.CUSTOM.equals(eventType)){
            logger.info("監(jiān)聽到自定義事件 {} \t {}",event.getType(),event.getProcessInstanceId());
        }

    }

    @Override
    public boolean isFailOnException() {
        return false;
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans.xsd">

  <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration">
    <property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/activiti6unit?useUnicode=true&amp;characterEncoding=utf8&amp;useSSL=false&amp;autoReconnect=true&amp;failOverReadOnly=false" />
    <property name="jdbcDriver" value="com.mysql.jdbc.Driver" />
    <property name="jdbcUsername" value="root" />
    <property name="jdbcPassword" value="root" />
    <!--數(shù)據(jù)庫更新策略-->
    <property name="databaseSchemaUpdate" value="true"/>
    <!--自定義監(jiān)聽事件-->
        <property name="eventListeners">
          <list>
            <bean class="com.guosh.activiti.event.CustomEventListener"/>
          </list>
        </property>

  </bean>
  <bean id="commandInvoker" class="com.guosh.activiti.interceptor.MDCCommandInvoker"/>
</beans>

4.通過代碼注冊監(jiān)聽

public class ConfigEventListenerTest {
    private static  final Logger logger= LoggerFactory.getLogger(ConfigEventListenerTest.class);

    @Rule
    public ActivitiRule activitiRule = new ActivitiRule("activiti_evenlistener.cfg.xml");


    @Test
    @Deployment(resources = {"com/guosh/activiti/my-process.bpmn20.xml"})
    public void test() {
        activitiRule.getRuntimeService().addEventListener(new CustomEventListener());
        ProcessInstance processInstance = activitiRule.getRuntimeService().startProcessInstanceByKey("my-process");
        Task task = activitiRule.getTaskService().createTaskQuery().singleResult();
        assertEquals("Activiti is awesome!", task.getName());
        activitiRule.getTaskService().complete(task.getId());
        //通過addEventListener注冊
        activitiRule.getRuntimeService().addEventListener(new CustomEventListener());
        //發(fā)出一個自定義事件
        activitiRule.getRuntimeService().dispatchEvent(new ActivitiActivityEventImpl(ActivitiEventType.CUSTOM));

    }

}

命令攔截器的配置

  • 命令模式與責任鏈模式


    image.png
image.png
  • 攔截器的配置方式

配置Interceptor

  1. customPreCommandInterceptors:配置在默認攔截器之前
  2. customPostCommandInterceptors:配置在默認攔截器之后
  3. commandInvoker:配置最后的執(zhí)行器
public class DurationCommandInterceptor extends AbstractCommandInterceptor {

    private static final Logger logger = LoggerFactory.getLogger(DurationCommandInterceptor.class);

    @Override
    public <T> T execute(CommandConfig config, Command<T> command) {
        //取毫秒數(shù)
        long start =System.currentTimeMillis();
        try {
            return this.getNext().execute(config,command);
        }finally {
            long duration = System.currentTimeMillis() - start;
            logger.info("{} 執(zhí)行時長 {} 毫秒",command.getClass().getSimpleName(),duration);
        }

    }
}

public class ConfigInterceptorTest {
    private static  final Logger logger= LoggerFactory.getLogger(ConfigInterceptorTest.class);

    @Rule
    public ActivitiRule activitiRule = new ActivitiRule("activiti_interceptor.cfg.xml");


    @Test
    @Deployment(resources = {"com/guosh/activiti/my-process.bpmn20.xml"})
    public void test() {
        ProcessInstance processInstance = activitiRule.getRuntimeService().startProcessInstanceByKey("my-process");
        Task task = activitiRule.getTaskService().createTaskQuery().singleResult();
        assertEquals("Activiti is awesome!", task.getName());
        activitiRule.getTaskService().complete(task.getId());
    }

}
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans.xsd">

  <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration">
    <property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/activiti6unit?useUnicode=true&amp;characterEncoding=utf8&amp;useSSL=false&amp;autoReconnect=true&amp;failOverReadOnly=false" />
    <property name="jdbcDriver" value="com.mysql.jdbc.Driver" />
    <property name="jdbcUsername" value="root" />
    <property name="jdbcPassword" value="root" />
    <!--數(shù)據(jù)庫更新策略-->
    <property name="databaseSchemaUpdate" value="true"/>

    <!--攔截器-->
    <property name="customPreCommandInterceptors">
      <list>
        <bean class="com.guosh.activiti.interceptor.DurationCommandInterceptor"/>
      </list>
    </property>

    <property name="customPostCommandInterceptors">
      <list>
        <bean class="com.guosh.activiti.interceptor.DurationCommandInterceptor"/>
      </list>
    </property>

    <!--能實現(xiàn)mdc同樣的效果-->
    <property name="enableVerboseExecutionTreeLogging" value="true"/>

    <!--自定義攔截每次執(zhí)行流程都打印流程id-->
<!--    <property name="commandInvoker" ref="commandInvoker"/>-->
  </bean>
  <bean id="commandInvoker" class="com.guosh.activiti.interceptor.MDCCommandInvoker"/>
</beans>

作業(yè)執(zhí)行器

  • 作業(yè)執(zhí)行器的配置
    相關(guān)配置
  1. asyncExecutorActivate:激活作業(yè)執(zhí)行器
  2. asyncExecutorXXX:異步執(zhí)行器對屬性配置
  3. asyncExecutor:異步執(zhí)行期bean

定時開始事件
timDate:指定啟動時間
timeDuration:指定持續(xù)時間間隔后執(zhí)行
timCycle:R5/P1DT1H指定事件段后周期執(zhí)行

  • 配置自定義線程池
    自定義線程池ExecutorService
  • threadNamePrefix:線程池名字前綴
  • corePoolSice:核心線程數(shù)
  • maxPoolSize:最大線程數(shù)
  • queueCapacity:堵塞隊列大小
image.png
  • 流程定義定時啟動流程
    線程池配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans.xsd">

  <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration">
    <property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/activiti6unit?useUnicode=true&amp;characterEncoding=utf8&amp;useSSL=false&amp;autoReconnect=true&amp;failOverReadOnly=false" />
    <property name="jdbcDriver" value="com.mysql.jdbc.Driver" />
    <property name="jdbcUsername" value="root" />
    <property name="jdbcPassword" value="root" />
    <!--數(shù)據(jù)庫更新策略-->
    <property name="databaseSchemaUpdate" value="true"/>

    <!--異步激活器-->
    <property name="asyncExecutorActivate" value="true"/>
    <!--異步執(zhí)行器-->
    <property name="asyncExecutor" ref="asyncExecutor"/>
    <!--監(jiān)聽JOB事件-->
    <property name="eventListeners">
      <list>
        <bean class="com.guosh.activiti.event.JobEventListener"/>
      </list>
    </property>


  </bean>
  <bean id="asyncExecutor" class="org.activiti.engine.impl.asyncexecutor.DefaultAsyncJobExecutor">
    <property name="executorService" ref="executorService"/>
  </bean>
  <!--線程池-->
  <bean id="executorService" class="org.springframework.scheduling.concurrent.ThreadPoolExecutorFactoryBean">
    <!--線程池名字前綴-->
    <property name="threadNamePrefix" value="activiti-job"/>
    <!--核心線程池-->
    <property name="corePoolSize" value="5"/>
    <!--最大線程數(shù)-->
    <property name="maxPoolSize" value="20"/>
    <!--堵塞隊列大小-->
    <property name="queueCapacity" value="100"/>
    <!--拒絕策略-->
    <property name="rejectedExecutionHandler">
      <bean class="java.util.concurrent.ThreadPoolExecutor$AbortPolicy"/>
    </property>

  </bean>
</beans>

流程定時任務(wù)配置

<?xml version="1.0" encoding="UTF-8"?>

<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:activiti="http://activiti.org/bpmn"
    xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC"
    xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema"
    expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">

    <process id="my-process">

        <!--<startEvent id="start" />-->
        <startEvent id="start" >
            <!--定時啟動-->
            <timerEventDefinition>
                <!--含義執(zhí)行五次間隔十秒-->
                <timeCycle>R5/PT10S</timeCycle>
            </timerEventDefinition>

        </startEvent>
        <sequenceFlow id="flow1" sourceRef="start" targetRef="someTask" />


        <userTask id="someTask" name="Activiti is awesome!" />
        <sequenceFlow id="flow2" sourceRef="someTask" targetRef="end" />

        <endEvent id="end" />

    </process>

</definitions>

定時任務(wù)事件監(jiān)聽

public class JobEventListener implements ActivitiEventListener {
    private static  final Logger logger= LoggerFactory.getLogger(JobEventListener.class);

    @Override
    public void onEvent(ActivitiEvent event) {
        ActivitiEventType eventType = event.getType();
        String name=eventType.name();
        //判斷如果是自定義的事件
        if(name.startsWith("TIMER")||name.startsWith("JOB")){
            logger.info("監(jiān)聽到JOB事件 {} \t {}",event.getType(),event.getProcessInstanceId());
        }

    }

    @Override
    public boolean isFailOnException() {
        return false;
    }
}
public class ConfigJobTest {
    private static  final Logger logger= LoggerFactory.getLogger(ConfigJobTest.class);

    @Rule
    public ActivitiRule activitiRule = new ActivitiRule("activiti_job.cfg.xml");


    @Test
    @Deployment(resources = {"com/guosh/activiti/my-process_job.bpmn20.xml"})
    public void test() throws InterruptedException {
        logger.info("start");
        //當前有多少個定時任務(wù)在執(zhí)行
        List<Job> jobs = activitiRule.getManagementService().createTimerJobQuery().list();
        for (Job job:jobs) {
            logger.info("定時任務(wù) = {},默認重試次數(shù) = {}",job,job.getRetries());
        }
        logger.info("jobs.size = {}", jobs.size());
        //等待
        Thread.sleep(1000*100);

        logger.info("end");
    }

}

集成Spring配置

相關(guān)配置

  • 添加pom依賴activiti-spring
  • 基于spring的默認配置activiti-context.xml
  • Activiti核心服務(wù)注入Spring容器

功能特征

  • 集成spring事物管理器
  • 定義文件表達式中使用Spring bean
  • 自動部署資源文件

單元測試

  • 添加pom依賴spring-test
  • 輔助測試Rule:ActivitiRule
  • 輔助測試TestCase:SpringActrivitiTest

配置activiti-context.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans.xsd">

  <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">

    <property name="databaseSchemaUpdate" value="true"/>
    <!--數(shù)據(jù)源-->
    <property name="dataSource" ref="dataSource"/>

    <!--事務(wù)管理器-->
    <property name="transactionManager" ref="transactionManager"/>
  </bean>

  <!--流程引擎對象-->
  <bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
    <property name="processEngineConfiguration" ref="processEngineConfiguration"/>
  </bean>

  <!--注冊服務(wù)-->
  <bean id="runtimeService" factory-bean="processEngine" factory-method="getRuntimeService"/>
  <bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService"/>
  <bean id="formService" factory-bean="processEngine" factory-method="getFormService"/>
  <bean id="taskService" factory-bean="processEngine" factory-method="getTaskService"/>
  <bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService"/>

  <bean id="activitiRule" class="org.activiti.engine.test.ActivitiRule">
    <property name="processEngine" ref="processEngine"/>
  </bean>


  <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
    <property name="url" value="jdbc:mysql://127.0.0.1:3306/activiti6unit?useUnicode=true&amp;characterEncoding=utf8&amp;useSSL=false&amp;autoReconnect=true&amp;failOverReadOnly=false"/>
    <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
    <property name="username" value="root"/>
    <property name="password" value="root"/>
    <property name="initialSize" value="2"/>
    <property name="maxActive" value="10"/>
  </bean>


  <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource" ref="dataSource"/>
  </bean>
  
  <bean id="helloBean" class="com.guosh.activiti.delegate.HelloBean"></bean>

</beans>

測試類

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:activiti-context.xml"})
public class ConfigSpringTest {
    private static  final Logger logger= LoggerFactory.getLogger(ConfigSpringTest.class);

    @Rule
    @Autowired
    public ActivitiRule activitiRule;

    @Autowired
    private RuntimeService runtimeService;

    @Autowired
    private TaskService taskService;


    @Test
    @Deployment(resources = {"com/guosh/activiti/my-process_spring.bpmn20.xml"})
    public void test() {
        ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("my-process");
        assertNotNull(processInstance);
        Task task = taskService.createTaskQuery().singleResult();
        taskService.complete(task.getId());
    }

}

my-process_spring.bpmn20.xml流程文件

<?xml version="1.0" encoding="UTF-8"?>

<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:activiti="http://activiti.org/bpmn"
    xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC"
    xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema"
    expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">

    <process id="my-process">

        <startEvent id="start" />
        <sequenceFlow id="flow1" sourceRef="start" targetRef="someTask" />


        <userTask id="someTask" name="Activiti is awesome!" />
        <sequenceFlow id="flow2" sourceRef="someTask" targetRef="helloBean" />
        <!--${helloBean.sayHello()}可以調(diào)取到自己寫到類到方法-->
        <serviceTask id="helloBean" activiti:expression="${helloBean.sayHello()}"/>
        <sequenceFlow id="flow3" sourceRef="helloBean" targetRef="end" />

        <endEvent id="end" />

    </process>

</definitions>
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