Liferay7 BPM门户开发之46: 集成Activiti用户、用户组、成员关系同步

在实际的BPM集成开发过程中，Liferay和Activiti这两个异构的系统之间，用户、组的同步需求非常重要，用来实现签收组的概念，比如指定签收组、会签、抢签都需要用到。

Activiti可以通过自定义实现SessionFactory，实现customUserManager和customRoleManager的方式集成第三方的用户关系。

这里我介绍一个方法，可以借助Liferay的实体监听器来做用户、组、用户-组成员关系的三种同步。

其实实现原理非常简单

用户组的同步，就是实现 BaseModelListener 泛型接口

package com.lifiti.hooks;

import org.osgi.service.component.annotations.Component;
import com.liferay.portal.kernel.exception.ModelListenerException;
import com.liferay.portal.kernel.model.BaseModelListener;
import com.liferay.portal.kernel.model.ModelListener;
import com.liferay.portal.kernel.model.UserGroup;
import com.lifiti.util.IdentifyHelper;

@Component(immediate = true, service = ModelListener.class)
public class UserGroupListener extends BaseModelListener<UserGroup>{

@Override
public void onAfterCreate(UserGroup ug) throws ModelListenerException{
System.out.println(ug.getUuid()+ug.getName() + " Added.");
IdentifyHelper.saveGroup(ug.getUuid(), ug.getName(), 1);
}

@Override
public void onAfterRemove(UserGroup ug) throws ModelListenerException {
System.out.println(ug.getName() + " Deleted.");
IdentifyHelper.delGroup(ug.getUuid());
}

@Override
public void onAfterUpdate(UserGroup ug) throws ModelListenerException {
System.out.println(ug.getName() + " Modified.");
IdentifyHelper.delGroup(ug.getUuid());
IdentifyHelper.saveGroup(ug.getUuid(), ug.getName(), 1);
}

}

用户，成员关系的同步

其中onAfterAddAssociation 就是监听成员关系，可以在liferay的users_usergroups表和activiti的act_id_membership查看

实际上就是一个关联中间表

package com.lifiti.hooks;

import org.osgi.service.component.annotations.Component;
import com.liferay.portal.kernel.exception.ModelListenerException;
import com.liferay.portal.kernel.exception.PortalException;
import com.liferay.portal.kernel.model.BaseModelListener;
import com.liferay.portal.kernel.model.ModelListener;
import com.liferay.portal.kernel.model.User;
import com.liferay.portal.kernel.service.UserGroupLocalServiceUtil;
import com.liferay.portal.kernel.service.UserLocalServiceUtil;
import com.lifiti.util.IdentifyHelper;

@Component(immediate = true, service = ModelListener.class)
public class UserListener extends BaseModelListener<User> {

@Override
public void onAfterCreate(User u) throws ModelListenerException {
System.out.println(u.getScreenName() + " Added.");
IdentifyHelper.saveUser(u.getScreenName(), u.getLastName() + u.getFirstName(), u.getEmailAddress());
}

@Override
public void onAfterRemove(User u) throws ModelListenerException {
System.out.println(u.getUserId() + " Deleted.");
IdentifyHelper.delUser(u.getScreenName());
}

@Override
public void onAfterUpdate(User u) throws ModelListenerException {
System.out.println(u.getUserId() + " Modified.");
IdentifyHelper.delUser(u.getScreenName());
IdentifyHelper.saveUser(u.getScreenName(), u.getLastName() + u.getFirstName(), u.getEmailAddress());
}

@Override
public void onAfterAddAssociation(Object classPK, String associationClassName, Object associationClassPK)
throws ModelListenerException {
try {
//对关系类型进行过滤,比如com.liferay.portal.kernel.model.UserRole先不处理
if ("com.liferay.portal.kernel.model.UserGroup".equals(associationClassName)) {
IdentifyHelper.createMembership(
UserLocalServiceUtil.getUser(Long.parseLong(classPK.toString())).getScreenName(),
UserGroupLocalServiceUtil.getUserGroup(Long.parseLong(associationClassPK.toString()))
.getUuid());
System.out.println(classPK.toString() + "#" + associationClassName + "#" + associationClassPK.toString()
+ " associationClassName Modified.");
}
} catch (NumberFormatException e) {
e.printStackTrace();
} catch (PortalException e) {
e.printStackTrace();
}
}

@Override
public void onAfterRemoveAssociation(Object classPK, String associationClassName, Object associationClassPK)
throws ModelListenerException {
try {
if ("com.liferay.portal.kernel.model.UserGroup".equals(associationClassName)) {
IdentifyHelper.deleteMembership(
UserLocalServiceUtil.getUser(Long.parseLong(classPK.toString())).getScreenName(),
UserGroupLocalServiceUtil.getUserGroup(Long.parseLong(associationClassPK.toString()))
.getUuid());
System.out.println(classPK.toString() + "#" + associationClassName + "#" + associationClassPK.toString()
+ " associationClassName Removed.");
}
} catch (NumberFormatException e) {
e.printStackTrace();
} catch (PortalException e) {
e.printStackTrace();
}
}

}

运行情况：

1、用户同步，在liferay的用户管理后台添加用户：



添加后，activiti也有同名的用户了（自动同步），即使修改或删除也能同步：



2、用户组同步

注意，liferay叫用户群组，acitiviti叫组



liferay添加组以后，activiti也自动同步：



3、成员关系同步



同步后，发现activiti也有同样的 “用户-组” 关系了



Activiti的集成开发系列文章集合在这里：

http://www.cnblogs.com/starcrm/p/6047486.html



全部工程源代码下载：

http://download.csdn.net/detail/starcrm/9715804