一、不使用原有的表
1、在spring.xml里添加：
<property name="customSessionFactories">
<list>
<bean class="com.gs.workflow.util.CustomUserEntityManagerFactory"/>
<bean class="com.gs.workflow.util.CustomGroupEntityManagerFactory"/>
</list>
</property>
2、用户管理工厂类CustomUserEntityManagerFactory.java：
package com.gs.workflow.util;
import org.activiti.engine.impl.interceptor.Session;
import org.activiti.engine.impl.interceptor.SessionFactory;
import org.activiti.engine.impl.persistence.entity.UserEntityManager;
import org.springframework.beans.factory.annotation.Autowired;
/**
* Created by gj.hu on 2015/8/24.
*/
public class CustomUserEntityManagerFactory implements SessionFactory {
private UserEntityManager userEntityManager;
@Autowired
public void setUserEntityManager(UserEntityManager userEntityManager) {
this.userEntityManager = userEntityManager;
}
public Class<?> getSessionType() {
// 返回原始的UserManager类型
return UserEntityManager.class;
}
public Session openSession() {
// 返回自定义的UserManager实例
return userEntityManager;
}
}
3、组管理工厂类CustomGroupEntityManagerFactory.java:
package com.gs.workflow.util;
import org.activiti.engine.impl.interceptor.Session;
import org.activiti.engine.impl.interceptor.SessionFactory;
import org.activiti.engine.impl.persistence.entity.GroupEntityManager;
import org.springframework.beans.factory.annotation.Autowired;
/**
* Created by gj.hu on 2015/8/24.
*/
public class CustomGroupEntityManagerFactory implements SessionFactory{
private GroupEntityManager groupEntityManager;
@Autowired
public void setGroupEntityManager(GroupEntityManager groupEntityManager) {
this.groupEntityManager = groupEntityManager;
}
public Class<?> getSessionType() {
// 返回原始的GroupEntityManager类型
return GroupEntityManager.class;
}
public Session openSession() {
// 返回自定义的GroupEntityManager实例
return groupEntityManager;
}
}4、覆盖用户管理类CustomUserEntityManager.java@Servicepublic class CustomUserEntityManager extends UserEntityManager{ private static final Log logger = LogFactory .getLog(CustomUserEntityManager.class); @Autowired private UserManager userManager;//自己实现的获取用户数据的Service @Override public UserEntity findUserById(final String userCode) { if (userCode == null) return null; try { UserEntity userEntity = null; com.gs.entity.User bUser = userManager.getUser(Long.valueOf(userCode)); userEntity = ActivitiUtils.toActivitiUser(bUser); return userEntity; } catch (EmptyResultDataAccessException e) { return null; } } @Override public List<Group> findGroupsByUser(final String userCode) { if (userCode == null) return null; List<com.gs.entity.Group> bGroups = userManager.getUser(Long.valueOf(userCode)).getGroupList(); List<Group> gs = null; gs = ActivitiUtils.toActivitiGroups(bGroups); return gs; } @Override public List<User> findUserByQueryCriteria(UserQueryImpl query, Page page) { throw new RuntimeException("not implement method."); } @Override public IdentityInfoEntity findUserInfoByUserIdAndKey(String userId, String key) { throw new RuntimeException("not implement method."); } @Override public List<String> findUserInfoKeysByUserIdAndType(String userId, String type) { throw new RuntimeException("not implement method."); } @Override public long findUserCountByQueryCriteria(UserQueryImpl query) { throw new RuntimeException("not implement method."); }}5、覆盖组管理类CustomGroupEntityManager.java:@Servicepublic class CustomGroupEntityManager extends GroupEntityManager { private static final Log logger = LogFactory .getLog(CustomGroupEntityManager.class); @Autowired private GroupManager groupManager; @Override public GroupEntity findGroupById(final String groupCode) { if (groupCode == null) return null; try { com.sanshen.js.entity.account.Group bGroup = groupManager.getGroupByGroupId(groupCode); GroupEntity e = new GroupEntity(); e.setRevision(1); // activiti有3种预定义的组类型：security-role、assignment、user // 如果使用Activiti // Explorer，需要security-role才能看到manage页签，需要assignment才能claim任务 e.setType("assignment"); e.setId(bGroup.getGroupId()); e.setName(bGroup.getName()); return e; } catch (EmptyResultDataAccessException e) { return null; } } @Override public List<Group> findGroupsByUser(final String userCode) { if (userCode == null) return null; List<com.sanshen.js.entity.account.Group> bGroupList = groupManager.getUser(Long.valueOf(userCode)).getGroupList(); List<Group> gs = new ArrayList<Group>(); GroupEntity g; for (com.sanshen.js.entity.account.Group bGroup : bGroupList) { g = new GroupEntity(); g.setRevision(1); g.setType("assignment"); g.setId(bGroup.getGroupId()); g.setName(bGroup.getName()); gs.add(g); } return gs; } @Override public List<Group> findGroupByQueryCriteria(GroupQueryImpl query, Page page) { throw new RuntimeException("not implement method."); } @Override public long findGroupCountByQueryCriteria(GroupQueryImpl query) { throw new RuntimeException("not implement method."); }}参考：http://124444154-qq-com.iteye.com/blog/1830995二、调用IdentifyService接口完成同步参考：http://blog.csdn.net/szwangdf/article/details/25640357三、覆盖IdentifyService接口实现：一个一个覆盖就行了四、用视图覆盖同名的ACT_ID_*表：1、必须先删除ACT_ID_*表2、分别创建同名视图DROP VIEW IF EXISTS act_id_membership; DROP VIEW IF EXISTS act_id_user; DROP VIEW IF EXISTS act_id_group;CREATE or replace VIEW act_id_user(ID_,REV_,FIRST_,LAST_,EMAIL_,PWD_,PICTURE_ID_ ,CONSTRAINT id_pk PRIMARY KEY(ID_) RELY DISABLE NOVALIDATE) AS SELECT TO_CHAR(au.login_name) AS ID_, 0 AS REV_, to_char(au.user_name_cn) AS FIRST_, '' AS LAST_, to_char(au.email) AS EMAIL_, to_char(au.PASSWORD) AS PWD_, '' AS PICTURE_ID_ FROM base_user au; CREATE VIEW act_id_group AS SELECT ar.name AS ID_, NULL AS REV_, ar.name AS NAME_, 'assignment' AS TYPE_ FROM s_role ar; CREATE VIEW act_id_membership AS SELECT (SELECT u.username FROM s_user u WHERE u.id=ur.user_id) AS USER_ID_, (SELECT r.name FROM s_role r WHERE r.id=ur.role_id) AS GROUP_ID_ FROM s_user_role ur;创建的视图要保证数据类型一致，例如用户的ACT_ID_MEMBERSHIP表的两个字段都是字符型，一般系统中都是用NU MBER作为用户、角色的主键类型，所以创建视图的时候要把数字类型转换为字符型。3、在spring.xml里添加：
<beanid="processEngineConfiguration"class="org.activiti.spring.SpringProcessEngineConfiguration">...<propertyname="dbIdentityUsed"value="false">...</property></bean>