Activiti6.0流程引擎学习——(23)activiti的用户和用户组管理服务（IdentityService）
这篇介绍activiti的身份管理服务——IdentityService
IdentityService：
1、管理用户（User），创建、查询与删除用户；
2、管理用户组（Group）；
3、用户与用户组的关系（Membership），使用Membership构建关系。
eg:identityService.createMembership("user1","group1");。
下面开始测试使用IdentityService：
一、创建IdentityService测试类
在coreapi中创建IdentityServiceTest测试类：
二、测试用户与用户组的关系
在IdentityServiceTest测试类中添加testIdentity测试方法：
package com.jjf.activiti.coreapi;
import org.activiti.engine.IdentityService;
import org.activiti.engine.identity.Group;
import org.activiti.engine.identity.User;
import org.activiti.engine.test.ActivitiRule;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import org.junit.Rule;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.List;
/**
* 身份管理服务测试
*/
public class IdentityServiceTest {
private static final Logger LOGGER = LoggerFactory.getLogger(IdentityServiceTest.class);
@Rule
public ActivitiRule activitiRule = new ActivitiRule();
@Test
public void testIdentity(){
IdentityService identityService = activitiRule.getIdentityService(); //这里不依赖流程部署文件，所以不用配置
User user1 = identityService.newUser("user1"); //初始化用户user1
user1.setEmail("[email protected]");
User user2 = identityService.newUser("user2");
user2.setEmail("[email protected]");
identityService.saveUser(user1); //将用户保存
identityService.saveUser(user2);
Group group1 = identityService.newGroup("group1"); //初始化用户组group1
identityService.saveGroup(group1);
Group group2 = identityService.newGroup("group2");
identityService.saveGroup(group2);
identityService.createMembership("user1","group1"); //构建用户与用户组的关系
identityService.createMembership("user2","group1");
identityService.createMembership("user1","group2");
User user1_2 = identityService.createUserQuery().userId("user1").singleResult(); //将用户名修改,版本号改为2
user1_2.setLastName("user1_2");
identityService.saveUser(user1_2);
List userList = identityService.createUserQuery().memberOfGroup("group1").listPage(0, 100);//查询用户列表
for (User user:userList){ //查询group1组中的所有用户
LOGGER.info("group1的user : [{}]" , ToStringBuilder.reflectionToString(user, ToStringStyle.JSON_STYLE)); //按照json格式输出
}
List groupList = identityService.createGroupQuery().groupMember("user1").listPage(0, 100);
for (Group group:groupList){ //查询user1用户所属的组
LOGGER.info("user1的group : [{}]" , ToStringBuilder.reflectionToString(group, ToStringStyle.JSON_STYLE));
}
}
}
测试函数中首先创建两个user1与user2用户，然后创建group1与group2用户组，再将user1、user2与group1建立关系，user1与group2建立关系，将user1的LastName设为user1_2，最后输出group1用户组中的所有用户与user1加入的所有用户组。
输出结果：
Loading XML bean definitions from class path resource [activiti.cfg.xml]
Activiti 5 compatibility handler implementation not found or error during instantiation : org.activiti.compatibility.DefaultActiviti5CompatibilityHandler. Activiti 5 backwards compatibility disabled.
performing create on engine with resource org/activiti/db/create/activiti.h2.create.engine.sql
performing create on history with resource org/activiti/db/create/activiti.h2.create.history.sql
performing create on identity with resource org/activiti/db/create/activiti.h2.create.identity.sql
ProcessEngine default created
group1的user : [{"firstName":null,"lastName":"user1_2","email":"[email protected]","password":null,"pictureByteArrayRef":"ByteArrayRef[id=null, name=null, entity=null]","id":"user1","revision":2,"isInserted":false,"isUpdated":false,"isDeleted":false}]
group1的user : [{"firstName":null,"lastName":null,"email":"[email protected]","password":null,"pictureByteArrayRef":"ByteArrayRef[id=null, name=null, entity=null]","id":"user2","revision":1,"isInserted":false,"isUpdated":false,"isDeleted":false}]
user1的group : [{"name":null,"type":null,"id":"group1","revision":1,"isInserted":false,"isUpdated":false,"isDeleted":false}]
user1的group : [{"name":null,"type":null,"id":"group2","revision":1,"isInserted":false,"isUpdated":false,"isDeleted":false}]
Process finished with exit code 0可以看到group1中有两个用户，分别为user1与user2，其中user1的lastName为user1_2，并且版本号为2；user1加入的用户组有group1与group2。
三、身份管理服务
activiti中保存用户时执行流程API调用：
保存用户时调用IdentityService中的saveUser方法；然后调用下面命令执行器（CommandExecutor），将saveUser这个用户的对象封装成一个命令对象，也就是将User对象构建成SaveUserCmd对象，把参数组装成一个命令，再执行；这里命令的执行方式是实现了UserEntityManager接口，调用底层数据库的修改；间接执行了UserDataManager：MybatisUserDataManager；最后通过DbSQLSession执行insert操作把数据保存到数据库中。