基于Activiti5.15.1 自定义用户、组（User，Group）实现

基于Activiti5.15.1 自定义用户、组（User，Group）实现

本人刚接触Activiti,最近工作中需要将Activiti中原有的用户，组（ACT_ID_USER,ACT_ID_GROUP,ACT_ID_MEMBERSHIP）表替换为公司已有的相关表。查看了咖啡兔及论坛相关文章。今天有空整理一下。以帮助后续有此需要的初学者。

自定义Group，User工厂类，实现SessionFactory接口

1)CustomGroupEntityManagerFactory

@Service
public class CustomGroupEntityManagerFactory implements SessionFactory {

    private CustomGroupEntityManager customGroupEntityManager;

    @Override
    public Class<?> getSessionType() {
　　　　 //注意此处必须为Activiti原生的类，否则自定义类不会生效
        return GroupIdentityManager.class;
    }

    @Override
    public Session openSession() {
        return customGroupEntityManager;
    }

    @Autowired
    public void setCustomGroupEntityManager(CustomGroupEntityManager customGroupEntityManager) {
        this.customGroupEntityManager = customGroupEntityManager;
    }
}

2)CustomUserEntityManagerFactory

@Service
public class CustomUserEntityManagerFactory implements SessionFactory {

    private CustomUserEntityManager customUserEntityManager;

    @Override
    public Class<?> getSessionType() {
       //注意此处也必须为Activiti原生类
        return UserIdentityManager.class;
    }

    @Override
    public Session openSession() {
        return customUserEntityManager;
    }

    @Autowired
    public void setCustomUserEntityManager(CustomUserEntityManager customUserEntityManager) {
        this.customUserEntityManager = customUserEntityManager;
    }
}

3)CustomGroupEntityManager

 @Component
 public class CustomGroupEntityManager extends GroupEntityManager {
     private static final Log logger = LogFactory
             .getLog(CustomGroupEntityManager.class);

     @Autowired
     private UserMapper userMapper;//用于查询实际业务中用户表、角色等表

     @Override
     public List<Group> findGroupsByUser(final String userCode) {
         if (userCode == null)
             return null;

         List<Role> bGroupList = userMapper.getGroupByUserName(userCode);

         List<Group> gs = new java.util.ArrayList<>();
         GroupEntity g;
         String roleId;
         String activitRole;
         for (Role bGroup : bGroupList) {
             g = new GroupEntity();
             g.setRevision(1);
             g.setType("assignment");
             roleId = String.valueOf(bGroup.getRoleID());
             activitRole = bindGroupWithRole.get(roleId);//此处只是根据RoleId获取RoleCode， 因实际表中无RoleCode字段，暂且如此实际，此行可注释掉
             g.setId(activitRole != null ? activitRole : roleId);
             g.setName(bGroup.getRoleName());
             gs.add(g);
         }
         return gs;
     }
 }

4)CustomUserEntityManagerFactory

@Component
public class CustomUserEntityManager extends UserEntityManager {
    private static final Log logger = LogFactory.getLog(CustomUserEntityManager.class);

    @Autowired
    private UserMapper userMapper;

    @Override
    public UserEntity findUserById(String userId) {
        UserEntity userEntity = new UserEntity();
        com.jimubox.transformers.model.user.User cue = userMapper.getUserByUserName(userId);
        ActivitiUtils.toActivitiUser(cue);
        return userEntity;
    }

    @Override
    public List<Group> findGroupsByUser(final String userCode) {
        if (userCode == null)
            return null;

        List<String> groupIds = userMapper.getGroupIdsByUserName(userCode);

        List<Group> gs = null;
        gs = Utils.toActivitiGroups(groupIds);
        return gs;

    }

}

5）applicationContext.xml

<!-- Activiti begin -->
    <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
        <property name="databaseType" value="mysql"/>
        <property name="dataSource" ref="dataSource"/>
        <property name="transactionManager" ref="transactionManager"/>
        <property name="databaseSchemaUpdate" value="true"/>
        <property name="jobExecutorActivate" value="false"/>
        <property name="history" value="activity"/>
        <property name="processDefinitionCacheLimit" value="10"/>
        <!-- JPA -->
        <property name="jpaEntityManagerFactory" ref="entityManagerFactory"/>
        <property name="jpaHandleTransaction" value="true"/>
        <property name="jpaCloseEntityManager" value="true"/>

     <property name="customSessionFactories">
            <list>
                <bean class="com.jimubox.transformers.factory.workflow.CustomUserEntityManagerFactory">
                    <property name="customUserEntityManager" ref="customUserEntityManager"/>
                </bean>
                <bean class="com.jimubox.transformers.factory.workflow.CustomGroupEntityManagerFactory">
                    <property name="customGroupEntityManager" ref="customGroupEntityManager"/>
                </bean>
            </list>
        </property>

    </bean>