ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine()

<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.StandaloneProcessEngineConfiguration">
    <property name="jdbcUrl" value="jdbc:h2:mem:activiti;DB_CLOSE_DELAY=1000" />    <property name="jdbcDriver" value="org.h2.Driver" />    <property name="jdbcUsername" value="sa" />    <property name="jdbcPassword" value="" />
    <property name="databaseSchemaUpdate" value="true" />
    <property name="jobExecutorActivate" value="false" />
    <property name="mailServerHost" value="mail.my-corp.com" />    <property name="mailServerPort" value="5025" />  </bean>
</beans>

ProcessEngineConfiguration.createProcessEngineConfigurationFromResourceDefault();ProcessEngineConfiguration.createProcessEngineConfigurationFromResource(String resource);ProcessEngineConfiguration.createProcessEngineConfigurationFromResource(String resource, String beanName);  // 配置不同的bean idProcessEngineConfiguration.createProcessEngineConfigurationFromInputStream(InputStream inputStream);ProcessEngineConfiguration.createProcessEngineConfigurationFromInputStream(InputStream inputStream, String beanName);

  ProcessEngine processEngine = ProcessEngineConfiguration.createStandaloneInMemProcessEngineConfiguration()  .setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_FALSE)  .setJdbcUrl("jdbc:h2:mem:my-own-db;DB_CLOSE_DELAY=1000")  .setJobExecutorActivate(true)  .buildProcessEngine();

 <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" >  <property name="driverClassName" value="com.mysql.jdbc.Driver" />  <property name="url" value="jdbc:mysql://localhost:3306/activiti" />  <property name="username" value="activiti" />  <property name="password" value="activiti" />  <property name="defaultAutoCommit" value="false" /></bean>
<bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
    <property name="dataSource" ref="dataSource" />    ...</bean>

<bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean">    <property name="jndiName" value="java:comp/env/jdbc/activitiDB"/></bean>

<?xml version="1.0" encoding="UTF-8"?><Context antiJARLocking="true" path="/activiti-explorer2">    <Resource auth="Container"              name="jdbc/activitiDB"              type="javax.sql.DataSource"              scope="Shareable"              description="JDBC DataSource"              url="jdbc:h2:mem:activiti;DB_CLOSE_DELAY=1000"              driverClassName="org.h2.Driver"              username="sa"              password=""              defaultAutoCommit="false"              initialSize="5"              maxWait="5000"              maxActive="120"              maxIdle="5"/></Context>

<?xml version="1.0" encoding="UTF-8"?><Context antiJARLocking="true" path="/activiti-rest2">    <Resource auth="Container"              name="jdbc/activitiDB"              type="javax.sql.DataSource"              scope="Shareable"              description="JDBC DataSource"              url="jdbc:h2:mem:activiti;DB_CLOSE_DELAY=-1"              driverClassName="org.h2.Driver"              username="sa"              password=""              defaultAutoCommit="false"              initialSize="5"              maxWait="5000"              maxActive="120"              maxIdle="5"/></Context>

<?xml version="1.0" encoding="UTF-8"?>    <Context antiJARLocking="true" path="/activiti-explorer2">        <Resource auth="Container"            name="jdbc/activitiDB"            type="javax.sql.DataSource"            description="JDBC DataSource"            url="jdbc:mysql://localhost:3306/activiti"            driverClassName="com.mysql.jdbc.Driver"            username="sa"            password=""            defaultAutoCommit="false"            initialSize="5"            maxWait="5000"            maxActive="120"            maxIdle="5"/>    </Context>

SQL DDL语句可以从Activiti下载页或Activiti发布目录里找到,在database子目录下.脚本也包含在引擎的jar中:activiti-engine-x.jar在org/activiti/db/create包下,drop目录里是删除语句
- SQL文件的命名方式如下:[activiti.{db}.{create|drop}.{type}.sql]type 是:- engine:引擎执行的表,必须- identity:包含用户,群组,用户与组之间的关系的表.这些表是可选的,只有使用引擎自带的默认身份管理时才需要- history:包含历史和审计信息的表,可选的.历史级别设为none时不会使用. 注意这也会引用一些需要把数据保存到历史表中的功能

<beans ... >
  <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">    <!-- ... -->    <property name="databaseSchemaUpdate" value="true" />    <!-- ... -->  </bean>
</beans>

<property name="jobExecutorActivate" value="false" />

<property name="history" value="audit" />

<property name="processDefinitionCacheLimit" value="10" />

<property name="processDefinitionCache">  <bean class="org.activiti.MyCache" /></property>

<dependency>  <groupId>org.slf4j</groupId>  <artifactId>slf4j-log4j12</artifactId></dependency>

<dependency>  <groupId>org.slf4j</groupId>  <artifactId>jcl-over-slf4j</artifactId></dependency>

 log4j.appender.consoleAppender.layout.ConversionPattern =ProcessDefinitionId=%X{mdcProcessDefinitionID}executionId=%X{mdcExecutionId}mdcProcessInstanceID=%X{mdcProcessInstanceID} mdcBusinessKey=%X{mdcBusinessKey} %m%n"

public class MyEventListener implements ActivitiEventListener {
  @Override  public void onEvent(ActivitiEvent event) {    switch (event.getType()) {
      case JOB_EXECUTION_SUCCESS:        System.out.println("A job well done!");        break;
      case JOB_EXECUTION_FAILURE:        System.out.println("A job has failed...");        break;
      default:        System.out.println("Event received: " + event.getType());    }  }
  @Override  public boolean isFailOnException() {    // The logic in the onEvent method of this listener is not critical, exceptions    // can be ignored if logging fails...    return false;  }}

<bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">    ...    <property name="eventListeners">      <list>         <bean class="org.activiti.engine.example.MyEventListener" />      </list>    </property></bean>

<bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">    ...    <property name="typedEventListeners">      <map>        <entry key="JOB_EXECUTION_SUCCESS,JOB_EXECUTION_FAILURE" >          <list>            <bean class="org.activiti.engine.example.MyJobEventListener" />          </list>        </entry>      </map>    </property></bean>

/** * Adds an event-listener which will be notified of ALL events by the dispatcher. * @param listenerToAdd the listener to add */void addEventListener(ActivitiEventListener listenerToAdd);
/** * Adds an event-listener which will only be notified when an event occurs, which type is in the given types. * @param listenerToAdd the listener to add * @param types types of events the listener should be notified for */void addEventListener(ActivitiEventListener listenerToAdd, ActivitiEventType... types);
/** * Removes the given listener from this dispatcher. The listener will no longer be notified, * regardless of the type(s) it was registered for in the first place. * @param listenerToRemove listener to remove */ void removeEventListener(ActivitiEventListener listenerToRemove);

<process id="testEventListeners">  <extensionElements>    <activiti:eventListener class="org.activiti.engine.test.MyEventListener" />    <activiti:eventListener delegateExpression="${testEventListener}" events="JOB_EXECUTION_SUCCESS,JOB_EXECUTION_FAILURE" />  </extensionElements>  ...</process>

<process id="testEventListeners">  <extensionElements>    <activiti:eventListener class="org.activiti.engine.test.MyEventListener" entityType="task" />    <activiti:eventListener delegateExpression="${testEventListener}" events="ENTITY_CREATED" entityType="task" />  </extensionElements>  ...</process>

<process id="testEventListeners">  <extensionElements>    <activiti:eventListener throwEvent="signal" signalName="My signal" events="TASK_ASSIGNED" />  </extensionElements></process>

<process id="testEventListeners">  <extensionElements>    <activiti:eventListener throwEvent="globalSignal" signalName="My signal" events="TASK_ASSIGNED" />  </extensionElements></process>

<process id="testEventListeners">  <extensionElements>    <activiti:eventListener throwEvent="message" messageName="My message" events="TASK_ASSIGNED" />  </extensionElements></process>

<process id="testEventListeners">  <extensionElements>    <activiti:eventListener throwEvent="error" errorCode="123" events="TASK_ASSIGNED" />  </extensionElements></process>

/** * Dispatches the given event to any listeners that are registered. * @param event event to dispatch. * * @throws ActivitiException if an exception occurs when dispatching the event or when the {@link ActivitiEventDispatcher} * is disabled. * @throws ActivitiIllegalArgumentException when the given event is not suitable for dispatching. */ void dispatchEvent(ActivitiEvent event);