Activiti7与Spring以及Spring Boot整合开发

Activiti整合Spring

一、Activiti与Spring整合开发

1.1 Activiti与Spring整合的配置

1)、在pom.xml文件引入坐标

如下

  1. <properties>
  2.          <slf4j.version>1.6.6</slf4j.version>
  3.          <log4j.version>1.2.12</log4j.version>
  4. </properties>
  5. <dependencies>
  6.      <dependency>
  7.          <groupId>org.activiti</groupId>
  8.          <artifactId>activiti-engine</artifactId>
  9.          <version>7.0.0.Beta1</version>
  10.      </dependency>
  11.      <dependency>
  12.          <groupId>org.activiti</groupId>
  13.          <artifactId>activiti-spring</artifactId>
  14.          <version>7.0.0.Beta1</version>
  15.      </dependency>
  16.      <dependency>
  17.          <groupId>org.activiti</groupId>
  18.          <artifactId>activiti-bpmn-model</artifactId>
  19.          <version>7.0.0.Beta1</version>
  20.      </dependency>
  21.      <dependency>
  22.          <groupId>org.activiti</groupId>
  23.          <artifactId>activiti-bpmn-converter</artifactId>
  24.          <version>7.0.0.Beta1</version>
  25.      </dependency>
  26.      <dependency>
  27.          <groupId>org.activiti</groupId>
  28.          <artifactId>activiti-json-converter</artifactId>
  29.          <version>7.0.0.Beta1</version>
  30.      </dependency>
  31.      <dependency>
  32.          <groupId>org.activiti</groupId>
  33.          <artifactId>activiti-bpmn-layout</artifactId>
  34.          <version>7.0.0.Beta1</version>
  35.      </dependency>
  36.      <dependency>
  37.          <groupId>org.activiti.cloud</groupId>
  38.          <artifactId>activiti-cloud-services-api</artifactId>
  39.          <version>7.0.0.Beta1</version>
  40.      </dependency>
  41.      <dependency>
  42.          <groupId>ASPectj</groupId>
  43.          <artifactId>aspectjweaver</artifactId>
  44.          <version>1.5.4</version>
  45.      </dependency>
  46.      <dependency>
  47.          <groupId>mysql</groupId>
  48.          <artifactId>mysql-connector-Java</artifactId>
  49.          <version>5.1.40</version>
  50.      </dependency>
  51.      <dependency>
  52.          <groupId>junit</groupId>
  53.          <artifactId>junit</artifactId>
  54.          <version>4.12</version>
  55.      </dependency>
  56.      <dependency>
  57.          <groupId>org.springframework</groupId>
  58.          <artifactId>spring-test</artifactId>
  59.          <version>5.0.7.RELEASE</version>
  60.      </dependency>
  61.      <!– log start –>
  62.      <dependency>
  63.          <groupId>log4j</groupId>
  64.          <artifactId>log4j</artifactId>
  65.          <version>${log4j.version}</version>
  66.      </dependency>
  67.      <dependency>
  68.          <groupId>org.slf4j</groupId>
  69.          <artifactId>slf4j-api</artifactId>
  70.          <version>${slf4j.version}</version>
  71.      </dependency>
  72.      <dependency>
  73.          <groupId>org.slf4j</groupId>
  74.          <artifactId>slf4j-log4j12</artifactId>
  75.          <version>${slf4j.version}</version>
  76.      </dependency>
  77.      <dependency>
  78.          <groupId>org.slf4j</groupId>
  79.          <artifactId>slf4j-nop</artifactId>
  80.          <version>${slf4j.version}</version>
  81.      </dependency>
  82.      <!– log end –>
  83.      <dependency>
  84.          <groupId>org.myBATis</groupId>
  85.          <artifactId>mybatis</artifactId>
  86.          <version>3.4.5</version>
  87.      </dependency>
  88.      <dependency>
  89.          <groupId>commons-dbcp</groupId>
  90.          <artifactId>commons-dbcp</artifactId>
  91.          <version>1.4</version>
  92.      </dependency>
  93. </dependencies>
  94. <repositories>
  95.      <repository>
  96.          <id>alfresco</id>
  97.          <name>Activiti Releases</name>
  98.          <url>https://artifacts.alfresco.com/nexus/content/repositories/activiti-releases/</url>
  99.          <releases>
  100.              <enabled>true</enabled>
  101.          </releases>
  102.      </repository>
  103. </repositories>

在Activiti中核心类的是ProcessEngine流程引擎,与Spring整合就是让Spring来管理ProcessEngine

通过org.activiti.spring.SpringProcessEngineConfiguration 与Spring整合方式来创建ProcessEngine对象。

创建spring与activiti的整合配置文件:activiti-spring.xml(名称不固定)

2)、创建activiti-spring.xml

  1. <beans xmlns=“http://www.springframework.org/schema/beans”
  2.          xmlns:xsi=“http://www.w3.org/2001/XMLSchema-instance”
  3.          xmlns:tx=“http://www.springframework.org/schema/tx”
  4.          xmlns:aop=“http://www.springframework.org/schema/aop”
  5.          xsi:schemaLocation=“http://www.springframework.org/schema/beans
  6.          http://www.springframework.org/schema/beans/spring-beans.xsd
  7.          http://www.springframework.org/schema/tx
  8.          http://www.springframework.org/schema/tx/spring-tx.xsd
  9.          http://www.springframework.org/schema/aop
  10.          http://www.springframework.org/schema/aop/spring-aop.xsd”>
  11.      <!– 数据源 –>
  12.      <bean id=“dataSource” class=“org.apache.commons.dbcp.BasicDataSource”>
  13.          <property name=“driverClassName” value=“com.mysql.jdbc.Driver”/>
  14.          <property name=“url” value=“jdbc:mysql://localhost:3306/activiti”/>
  15.          <property name=“username” value=“root”/>
  16.          <property name=“password” value=“123456”/>
  17.          <property name=“maxActive” value=“3”/>
  18.          <property name=“maxIdle” value=“1”/>
  19.      </bean>
  20.      <!– 工作流引擎配置bean –>
  21.      <bean id=“processEngineConfiguration” class=“org.activiti.spring.SpringProcessEngineConfiguration”>
  22.          <!– 数据源 –>
  23.          <property name=“dataSource” ref=“dataSource”/>
  24.          <!– 使用spring事务管理器 –>
  25.          <property name=“transactionManager” ref=“transactionManager”/>
  26.          <!– 数据库策略 –>
  27.          <property name=“databaseSchemaUpdate” value=“drop-create”/>
  28.      </bean>
  29.      <!– 流程引擎 –>
  30.      <bean id=“processEngine” class=“org.activiti.spring.ProcessEngineFactoryBean”>
  31.          <property name=“processEngineConfiguration” ref=“processEngineConfiguration”/>
  32.      </bean>
  33.      <!– 资源服务service –>
  34.      <bean id=“repositoryService” factory-bean=“processEngine” factory-method=“getRepositoryService”/>
  35.      <!– 流程运行service –>
  36.      <bean id=“runtimeService” factory-bean=“processEngine” factory-method=“getRuntimeService”/>
  37.      <!– 任务管理service –>
  38.      <bean id=“taskService” factory-bean=“processEngine” factory-method=“getTaskService”/>
  39.      <!– 历史管理service –>
  40.      <bean id=“historyService” factory-bean=“processEngine” factory-method=“getHistoryService”/>
  41.      <!– 事务管理器 –>
  42.      <bean id=“transactionManager” class=“org.springframework.jdbc.datasource.DataSourceTransactionManager”>
  43.          <property name=“dataSource” ref=“dataSource”/>
  44.      </bean>
  45.      <!– 通知 –>
  46.      <tx:advice id=“txAdvice” transaction-manager=“transactionManager”>
  47.          <tx:attributes>
  48.              <!– 传播行为 –>
  49.              <tx:method name=“save*” propagation=“REQUIRED”/>
  50.              <tx:method name=“insert*” propagation=“REQUIRED”/>
  51.              <tx:method name=“delete*” propagation=“REQUIRED”/>
  52.              <tx:method name=“update*” propagation=“REQUIRED”/>
  53.              <tx:method name=“find*” propagation=“SUPPORTS” read-only=“true”/>
  54.              <tx:method name=“get*” propagation=“SUPPORTS” read-only=“true”/>
  55.          </tx:attributes>
  56.      </tx:advice>
  57.      <!– 切面,根据具体项目修改切点配置
  58.      <aop:config proxy-target-class=”true”>
  59.          <aop:advisor advice-ref=”txAdvice”
  60.                      pointcut=”execution(*com.itheima.service.impl..(..))”/>
  61.      </aop:config>–>
  62. </beans>

databaseSchemaUpdate的取值内容:

flase: 默认值。activiti在启动时,会对比数据库表中保存的版本,如果没有表或者版本不匹配,将抛出异常。(生产环境常用)
true: activiti会对数据库中所有表进行更新操作。如果表不存在,则自动创建。(开发时常用)
create_drop: 在activiti启动时创建表,在关闭时删除表(必须手动关闭引擎,才能删除表)。(单元测试常用)
drop-create: 在activiti启动时删除原来的旧表,然后在创建新表(不需要手动关闭引擎)。

1.2 测试Activiti与Spring整合

1)、测试代码

  1. /**
  2.      测试activiti与spring整合是否成功
  3. **/
  4. @RunWith(SpringJUnit4ClassRunner.class)
  5. @ContextConfiguration(locations = “classpath:activiti-spring.xml”)
  6.      public class ActivitiTest {
  7.          @Autowired
  8.          private RepositoryService repositoryService;
  9.          @Test
  10.          public void test01(){
  11.              System.out.println(“部署对象:”+repositoryService);
  12.          }
  13.      }

2)、执行流程分析

下面我们一起来分析Activiti与Spring整合加载的过程。

1、加载activiti-spring.xml配置文件

2、加载SpringProcessEngineConfiguration对象,这个对象它需要依赖注入dataSource对象和transactionManager对象。

3、加载ProcessEngineFactoryBean工厂来创建ProcessEngine对象,而ProcessEngineFactoryBean工厂又需要依赖注入processEngineConfiguration对象。

4、processEngine对象来负责创建我们的Service对象,从而简化Activiti的开发过程。

二、Activiti7与SpringBoot整合开发

Activiti7发布正式版之后,它与SpringBoot2.x已经完全支持整合开发。

2.1 SpringBoot整合Activiti7的配置

为了能够实现SpringBoot与Activiti7整合开发,首先我们要引入相关的依赖支持。

在工程的pom.xml文件中引入相关的依赖,其中activiti的依赖是:activiti-spring-boot-starter。

具体依赖如下所示:

  1. <parent>
  2.      <groupId>org.springframework.boot</groupId>
  3.      <artifactId>spring-boot-starter-parent</artifactId>
  4.      <version>2.1.0.RELEASE</version>
  5. </parent>
  6. <properties>
  7.      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  8.      <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  9.      <java.version>1.8</java.version>
  10. </properties>
  11. <dependencies>
  12.      <dependency>
  13.          <groupId>org.springframework.boot</groupId>
  14.          <artifactId>spring-boot-starter-web</artifactId>
  15.      </dependency>
  16.      <dependency>
  17.          <groupId>org.springframework.boot</groupId>
  18.          <artifactId>spring-boot-starter-jdbc</artifactId>
  19.      </dependency>
  20.      <dependency>
  21.          <groupId>org.springframework.boot</groupId>
  22.          <artifactId>spring-boot-starter-test</artifactId>
  23.      </dependency>
  24.      <dependency>
  25.          <groupId>org.activiti</groupId>
  26.          <artifactId>activiti-spring-boot-starter</artifactId>
  27.          <version>7.0.0.Beta2</version>
  28.      </dependency>
  29.      <dependency>
  30.          <groupId>mysql</groupId>
  31.          <artifactId>mysql-connector-java</artifactId>
  32.          <version>5.1.29</version>
  33.      </dependency>
  34.      <dependency>
  35.          <groupId>org.projectlombok</groupId>
  36.          <artifactId>lombok</artifactId>
  37.      </dependency>
  38. </dependencies>
  39. <build>
  40.      <plugins>
  41.          <plugin>
  42.              <groupId>org.springframework.boot</groupId>
  43.              <artifactId>spring-boot-maven-plugin</artifactId>
  44.          </plugin>
  45.      </plugins>
  46. </build>

通过该pom.xml文件所导入的坐标,我们就可以实现activiti7与Springboot整合。

2.2 SpringBoot的application.yml文件配置

为了能够实现Activiti7生成的表放到Mysql数据库中,需要在配置文件application.yml中添加相关的配置

注意:activiti7默认没有开启数据库历史记录,需要手动配置开启

  1. spring:
  2.      datasource:
  3.      url: jdbc:mysql:///activiti?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT
  4.      username: root
  5.      password: 123456
  6.      driverclassname: com.mysql.jdbc.Driver
  7.      activiti:
  8.      #1.flase:默认值。activiti在启动时,对比数据库表中保存的版本,如果没有表或者版本不匹配,将抛出异常
  9.      #2.true: activiti会对数据库中所有表进行更新操作。如果表不存在,则自动创建
  10.      #3.create_drop: 在activiti启动时创建表,在关闭时删除表(必须手动关闭引擎,才能删除表)
  11.      #4.drop-create: 在activiti启动时删除原来的旧表,然后在创建新表(不需要手动关闭引擎)
  12.      databaseschemaupdate: true
  13.      #检测历史表是否存在 activiti7默认没有开启数据库历史记录 启动数据库历史记录
  14.      dbhistoryused: true
  15.      #记录历史等级 可配置的历史级别有none, activity, audit, full
  16.      #none:不保存任何的历史数据,因此,在流程执行过程中,这是最高效的。
  17.      #activity:级别高于none,保存流程实例与流程行为,其他数据不保存。
  18.      #audit:除activity级别会保存的数据外,还会保存全部的流程任务及其属性。audit为history的默认值。
  19.      #full:保存历史数据的最高级别,除了会保存audit级别的数据外,还会保存其他全部流程相关的细节数据,包括一些流程参数等。
  20.      historylevel: full
  21.      #校验流程文件,默认校验resources下的processes文件夹里的流程文件
  22.      checkprocessdefinitions: false

2.3 编写启动类

  1. package com.itheima;
  2.  
  3. import org.springframework.boot.SpringApplication;
  4. import org.springframework.boot.autoconfigure.SpringBootApplication;
  5.  
  6. @SpringBootApplication
  7. public class ActApplication {
  8.      public static void main(String[] args) {
  9.          SpringApplication.run(ActApplication.class,args);
  10.      }
  11. }
  12.  

2.4 添加SpringSecurity安全框架整合配置

因为Activiti7与SpringBoot整合后,默认情况下,集成了SpringSecurity安全框架,这样我们就要去准备SpringSecurity整合进来的相关用户权限配置信息。

SpringBoot的依赖包已经将SpringSecurity的依赖包也添加进项目中。

2.4.1 添加SecurityUtil类

为了能够快速实现SpringSecurity安全框架的配置,所添加的一个组件。

  1. package com.itheima.utils;
  2.  
  3. import org.slf4j.Logger;
  4. import org.slf4j.LoggerFactory;
  5. import org.springframework.beans.factory.annotation.Autowired;
  6. import org.springframework.beans.factory.annotation.Qualifier;
  7. import org.springframework.security.core.Authentication;
  8. import org.springframework.security.core.GrantedAuthority;
  9. import org.springframework.security.core.context.SecurityContextHolder;
  10. import org.springframework.security.core.context.SecurityContextImpl;
  11. import org.springframework.security.core.userdetails.UserDetails;
  12. import org.springframework.security.core.userdetails.UserDetailsService;
  13. import org.springframework.stereotype.Component;
  14.  
  15. import java.util.Collection;
  16.  
  17.  
  18. @Component
  19. public class SecurityUtil {
  20.      private Logger logger = LoggerFactory.getLogger(SecurityUtil.class);
  21.  
  22.          @Autowired
  23.          @Qualifier(“myUserDetailsService”)
  24.          private UserDetailsService userDetailsService;
  25.      public void logInAs(String username) {
  26.          UserDetails user = userDetailsService.loadUserByUsername(username);
  27.  
  28.          if (user == null) {
  29.              throw new IllegalStateException(“User “ + username + ” doesn’t exist, please provide a valid user”);
  30.          }
  31.          logger.info(“> Logged in as: “ + username);
  32.  
  33.          SecurityContextHolder.setContext(
  34.                  new SecurityContextImpl(
  35.                      new Authentication() {
  36.                      @Override
  37.                      public Collection<? extends GrantedAuthority> getAuthorities() {
  38.                      return user.getAuthorities();
  39.                      }
  40.                      @Override
  41.                      public Object getCredentials() {
  42.                      return user.getPassword();
  43.                      }
  44.                      @Override
  45.                      public Object getDetails() {
  46.                      return user;
  47.                      }
  48.                      @Override
  49.                      public Object getPrincipal() {
  50.                      return user;
  51.                      }
  52.                      @Override
  53.                      public boolean isAuthenticated() {
  54.                      return true;
  55.                      }
  56.                      @Override
  57.                      public void setAuthenticated(boolean isAuthenticated) throws IllegalArgumentException { }
  58.                      @Override
  59.                      public String getName() {
  60.                      return user.getUsername();
  61.                      }
  62.          }));
  63.          org.activiti.engine.impl.identity.Authentication.setAuthenticatedUserId(username);
  64.      }
  65.      }

这个类可以从我们下载的Activiti7官方提供的Example中找到。

2.4.2 添加DemoApplicationConfig类

在Activiti7官方下载的Example中找到DemoApplicationConfig类,它的作用是为了实现SpringSecurity框架的用户权限的配置,这样我们就可以在系统中使用用户权限信息。

本次项目中基本是在文件中定义出来的用户信息,当然也可以是数据库中查询的用户权限信息。

后面处理流程时用到的任务负责人,需要添加在这里

  1. package com.itheima.config;
  2.  
  3. import org.slf4j.Logger;
  4. import org.slf4j.LoggerFactory;
  5. import org.springframework.context.annotation.Bean;
  6. import org.springframework.context.annotation.Configuration;
  7. import org.springframework.security.core.authority.SimpleGrantedAuthority;
  8. import org.springframework.security.core.userdetails.User;
  9. import org.springframework.security.core.userdetails.UserDetailsService;
  10. import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
  11. import org.springframework.security.crypto.password.PasswordEncoder;
  12. import org.springframework.security.provisioning.InMemoryUserDetailsManager;
  13.  
  14. import java.util.Arrays;
  15. import java.util.List;
  16. import java.util.stream.Collectors;
  17.  
  18. @Configuration
  19. public class DemoApplicationConfiguration {
  20.      private Logger logger = LoggerFactory.getLogger(DemoApplicationConfiguration.class);
  21.          @Bean
  22.          public UserDetailsService myUserDetailsService() {
  23.              InMemoryUserDetailsManager inMemoryUserDetailsManager = new InMemoryUserDetailsManager();
  24.              //这里添加用户,后面处理流程时用到的任务负责人,需要添加在这里
  25.              String[][] usersGroupsAndRoles = {
  26.                      {“jack”, “password”, “ROLE_ACTIVITI_USER”, “GROUP_activitiTeam”},
  27.                      {“rose”, “password”, “ROLE_ACTIVITI_USER”, “GROUP_activitiTeam”},
  28.                      {“tom”, “password”, “ROLE_ACTIVITI_USER”, “GROUP_activitiTeam”},
  29.                      {“other”, “password”, “ROLE_ACTIVITI_USER”, “GROUP_otherTeam”},
  30.                      {“system”, “password”, “ROLE_ACTIVITI_USER”},
  31.                      {“admin”, “password”, “ROLE_ACTIVITI_ADMIN”},
  32.              };
  33.  
  34.              for (String[] user : usersGroupsAndRoles) {
  35.                  List<String> authoritiesStrings = Arrays.asList(Arrays.copyOfRange(user, 2, user.length));
  36.                  logger.info(“> Registering new user: “ + user[0] + ” with the following Authorities[“ + authoritiesStrings + “]”);
  37.                  inMemoryUserDetailsManager.createUser(new User(user[0], passwordEncoder().encode(user[1]),
  38.                      authoritiesStrings.stream().map(-> new SimpleGrantedAuthority(s)).collect(Collectors.toList())));
  39.              }
  40.  
  41.              return inMemoryUserDetailsManager;
  42.          }
  43.          @Bean
  44.          public PasswordEncoder passwordEncoder() {
  45.              return new BCryptPasswordEncoder();
  46.          }
  47. }

2.5 创建Bpmn文件

Activiti7可以自动部署流程,前提是在resources目录下,创建一个新的目录processes,用来放置bpmn文件。

创建一个简单的Bpmn流程文件,并设置任务的用户组Candidate Groups。

Candidate Groups中的内容与上面DemoApplicationConfiguration类中出现的用户组名称要保持一致,可以填写:activitiTeam 或者 otherTeam。

这样填写的好处:当不确定到底由谁来负责当前任务的时候,只要是Groups内的用户都可以拾取这个任务

-1

2.6 使用Junit方式测试

  1. package com.itheima.test;
  2.  
  3. import com.itheima.utils.SecurityUtil;
  4. import org.activiti.api.process.model.ProcessInstance;
  5. import org.activiti.api.process.model.builders.ProcessPayloadBuilder;
  6. import org.activiti.api.process.runtime.ProcessRuntime;
  7. import org.activiti.api.runtime.shared.query.Page;
  8. import org.activiti.api.runtime.shared.query.Pageable;
  9. import org.activiti.api.task.model.Task;
  10. import org.activiti.api.task.model.builders.TaskPayloadBuilder;
  11. import org.activiti.api.task.runtime.TaskRuntime;
  12. import org.activiti.engine.repository.ProcessDefinition;
  13. import org.junit.Test;
  14. import org.junit.runner.RunWith;
  15. import org.springframework.beans.factory.annotation.Autowired;
  16. import org.springframework.boot.test.context.SpringBootTest;
  17. import org.springframework.test.context.junit4.SpringRunner;
  18.  
  19. @RunWith(SpringRunner.class)
  20. @SpringBootTest
  21.      public class Actviti7DemoApplicationTests {
  22.          @Autowired
  23.          private ProcessRuntime processRuntime;
  24.          @Autowired
  25.          private TaskRuntime taskRuntime;
  26.          @Autowired
  27.          private SecurityUtil securityUtil;
  28.  
  29.      @Test
  30.      public void testActBoot(){
  31.          System.out.println(taskRuntime);
  32.      }
  33.  
  34.      /**
  35.          * 查看流程定义
  36.          */
  37.      @Test
  38.      public void contextLoads() {
  39.          securityUtil.logInAs(“system”);
  40.          Page<org.activiti.api.process.model.ProcessDefinition> processDefinitionPage =
  41.                  processRuntime.processDefinitions(Pageable.of(0, 10));
  42.          System.out.println(“可用的流程定义数量:” + processDefinitionPage.getTotalItems());
  43.          for (org.activiti.api.process.model.ProcessDefinition pd : processDefinitionPage.getContent()) {
  44.              System.out.println(“流程定义:” + pd);
  45.          }
  46.      }
  47.  
  48.  
  49.      /**
  50.          * 启动流程实例
  51.          */
  52.      @Test
  53.      public void testStartProcess() {
  54.          securityUtil.logInAs(“system”);
  55.          ProcessInstance pi = processRuntime.start(ProcessPayloadBuilder.
  56.                  start().
  57.                  withProcessDefinitionKey(“myProcess”).
  58.                  build());
  59.          System.out.println(“流程实例ID:” + pi.getId());
  60.      }
  61.  
  62.  
  63.      /**
  64.          **查询任务,并完成自己的任务
  65.          **/
  66.      @Test
  67.      public void testTask() {
  68.          securityUtil.logInAs(“jack”);
  69.          Page<Task> taskPage=taskRuntime.tasks(Pageable.of(0,10));
  70.          if (taskPage.getTotalItems()>0){
  71.              for (Task task:taskPage.getContent()){
  72.                  taskRuntime.claim(TaskPayloadBuilder.
  73.                      claim().
  74.                      withtaskId(task.getId()).build());
  75.                  System.out.println(“任务:”+task);
  76.                  taskRuntime.complete(TaskPayloadBuilder.
  77.                      complete().
  78.                      withTaskId(task.getId()).build());
  79.              }
  80.          }
  81.          Page<Task> taskPage2=taskRuntime.tasks(Pageable.of*(0,10));
  82.          if (taskPage2.getTotalItems()>0){
  83.              System.out.println(“任务:”+taskPage2.getContent());
  84.          }
  85.      }
  86. }

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