2019独角兽企业重金招聘Python工程师标准>>> 
声明：Activiti版本5.22.0。 Activiti在初始化时会生成act_id_*系列与用户、用户组相关的表，但在实际业务中，我们系统可能初期并没有接入工作流，后期接入时就涉及到如何将现有业务表中的用户与Activiti进行对接，本文即简单介绍下思路。
1、自定义实现Activiti用户管理接口
自定义类CustomUserEntityManagerFactory实现SessionFactory接口，重写getSessionType和openSession方法，核心代码如下：
import org.activiti.engine.impl.interceptor.Session;
import org.activiti.engine.impl.interceptor.SessionFactory;
import org.activiti.engine.impl.persistence.entity.UserIdentityManager;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class CustomUserEntityManagerFactory implements SessionFactory{
@Autowired
private CustomUserEntityManager customUserEntityManager;
@Override
public Class getSessionType() {
return UserIdentityManager.class;
}
@Override
public Session openSession() {
return customUserEntityManager;
}
}
其中，类CustomUserEntityManager继承UserEntityManager类：
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.activiti.engine.identity.Group;
import org.activiti.engine.impl.Page;
import org.activiti.engine.impl.UserQueryImpl;
import org.activiti.engine.impl.persistence.entity.IdentityInfoEntity;
import org.activiti.engine.impl.persistence.entity.UserEntity;
import org.activiti.engine.impl.persistence.entity.UserEntityManager;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Component;
import com.fengunion.scf.data.usermanage.role.service.RoleService;
import com.fengunion.scf.data.usermanage.user.entity.User;
import com.fengunion.scf.data.usermanage.user.service.UserService;
import com.fengunion.scf.data.workflow.common.constant.WorkflowConstants;
import com.fengunion.scf.data.workflow.common.util.ActivitiUserUtil;
@Component
public class CustomUserEntityManager extends UserEntityManager{
@Autowired
@Lazy
private UserService userService;
@Autowired
@Lazy
private RoleService roleService;
@Override
public UserEntity findUserById(String userId) {
User user = getUser(userId);
return ActivitiUserUtil.toActivitiUser(user);
}
@Override
public List findGroupsByUser(String userId) {
if (userId == null) {
return null;
}
User uparam = new User();
uparam.setPkid(Long.valueOf(userId));
User user = userService.selectOne(uparam);
List list = roleService.fingRoleCodeByUserId(Long.valueOf(userId));
List gs = ActivitiUserUtil.toActivitiGroups(user.getFkEnterpriseBasicId(),list);
return gs;
}
@Override
public List findUserByQueryCriteria(UserQueryImpl query, Page page) {
User user = getUser(query.getId());
List list = new ArrayList<>();
list.add(ActivitiUserUtil.toActivitiUser(user));
return list;
}
private User getUser(String userId) {
User user = new User();
if(WorkflowConstants.INTERFACE_SYSTEM_ID.equals(userId)) {
user.setPkid(Long.valueOf(WorkflowConstants.INTERFACE_SYSTEM_ID));
user.setNickName(WorkflowConstants.INTERFACE_SYSTEM_NAME);
user.setRealName(WorkflowConstants.INTERFACE_SYSTEM_NAME);
user.setPswd("");
user.setEmail("");
}else {
User prarmUser = new User();
prarmUser.setPkid(Long.valueOf(userId));
user = userService.selectOne(prarmUser);
}
return user;
}
@Override
public long findUserCountByQueryCriteria(UserQueryImpl query) {
throw new RuntimeException("not implement method.");
}
@Override
public IdentityInfoEntity findUserInfoByUserIdAndKey(String userId, String key) {
throw new RuntimeException("not implement method.");
}
@Override
public List findUserInfoKeysByUserIdAndType(String userId, String type) {
throw new RuntimeException("not implement method.");
}
@Override
public List findPotentialStarterUsers(String proceDefId) {
throw new RuntimeException("not implement method.");
}
@Override
public List findUsersByNativeQuery(Map parameterMap,
int firstResult, int maxResults) {
throw new RuntimeException("not implement method.");
}
@Override
public long findUserCountByNativeQuery(Map parameterMap) {
throw new RuntimeException("not implement method.");
}
}
2、自定义实现Activiti用户管理接口
自定义类CustomGroupEntityManagerFactory 实现SessionFactory接口，重写getSessionType和openSession方法，核心代码如下：
import org.activiti.engine.impl.interceptor.Session;
import org.activiti.engine.impl.interceptor.SessionFactory;
import org.activiti.engine.impl.persistence.entity.GroupIdentityManager;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class CustomGroupEntityManagerFactory implements SessionFactory{
@Autowired
private CustomGroupEntityManager customGroupEntityManager;
@Override
public Class getSessionType() {
return GroupIdentityManager.class;
}
@Override
public Session openSession() {
return customGroupEntityManager;
}
}
其中，CustomGroupEntityManager类如下：
import java.util.List;
import java.util.Map;
import org.activiti.engine.identity.Group;
import org.activiti.engine.impl.GroupQueryImpl;
import org.activiti.engine.impl.Page;
import org.activiti.engine.impl.persistence.entity.GroupEntityManager;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Lazy;
import org.springframework.dao.EmptyResultDataAccessException;
import org.springframework.stereotype.Component;
import com.fengunion.scf.data.usermanage.role.service.RoleService;
import com.fengunion.scf.data.usermanage.user.entity.User;
import com.fengunion.scf.data.usermanage.user.service.UserService;
import com.fengunion.scf.data.workflow.common.util.ActivitiUserUtil;
@Component
public class CustomGroupEntityManager extends GroupEntityManager{
@Lazy
@Autowired
private RoleService roleService;
@Lazy
@Autowired
private UserService userService;
@Override
public List findGroupsByUser(String userId) {
if (userId == null){
return null;
}
try {
User uparam = new User();
uparam.setPkid(Long.valueOf(userId));
User user = userService.selectOne(uparam);
List list = roleService.fingRoleCodeByUserId(Long.valueOf(userId));
List gs = ActivitiUserUtil.toActivitiGroups(user.getFkEnterpriseBasicId(),list);
return gs;
} catch (EmptyResultDataAccessException e) {
return null;
}
}
@Override
public List findGroupByQueryCriteria(GroupQueryImpl query, Page page) {
throw new RuntimeException("not implement method.");
}
@Override
public long findGroupCountByQueryCriteria(GroupQueryImpl query) {
throw new RuntimeException("not implement method.");
}
@Override
public List findGroupsByNativeQuery(Map parameterMap, int firstResult, int maxResults) {
throw new RuntimeException("not implement method.");
}
@Override
public long findGroupCountByNativeQuery(Map parameterMap) {
throw new RuntimeException("not implement method.");
}
}
3、在Activiti配置中注册自己定义的用户、用户组管理类，核心代码如下（我这儿以springboot配置方式为例）：
...
@Autowired
private CustomUserEntityManagerFactory customUserEntityManagerFactory;
@Autowired
private CustomGroupEntityManagerFactory customGroupEntityManagerFactory;
...
@Override
public void configure(SpringProcessEngineConfiguration processEngineConfiguration) {
...
//自定义用户和组
List customSessionFactories = new ArrayList<>();
customSessionFactories.add(customUserEntityManagerFactory);
customSessionFactories.add(customGroupEntityManagerFactory);
processEngineConfiguration.setCustomSessionFactories(customSessionFactories);
...
}
其中ActivitiUserUtil工具类如下：
import java.util.ArrayList;
import java.util.List;
import org.activiti.engine.identity.Group;
import org.activiti.engine.impl.persistence.entity.GroupEntity;
import org.activiti.engine.impl.persistence.entity.UserEntity;
import com.fengunion.scf.data.usermanage.user.entity.User;
public class ActivitiUserUtil {
public static UserEntity toActivitiUser(User bUser){
UserEntity userEntity = new UserEntity();
userEntity.setId(bUser.getPkid().toString());
userEntity.setFirstName(bUser.getNickName());
userEntity.setLastName(bUser.getRealName());
userEntity.setPassword(bUser.getPswd());
userEntity.setEmail(bUser.getEmail());
userEntity.setRevision(1);
return userEntity;
}
public static GroupEntity toActivitiGroup(Long enterpriseBasicId,String code){
GroupEntity groupEntity = new GroupEntity();
groupEntity.setRevision(1);
groupEntity.setType("assignment");
groupEntity.setId(enterpriseBasicId+"_"+code);
return groupEntity;
}
public static List toActivitiGroups(Long enterpriseBasicId,List roleCodeList){
List groups = new ArrayList<>();
for (String code : roleCodeList) {
GroupEntity groupEntity = toActivitiGroup(enterpriseBasicId,code);
groups.add(groupEntity);
}
return groups;
}
}
至此，实现自定义用户和用户组就基本实现了。