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Activiti7與Spring及Spring?Boot整合開發(fā)的方法是什么

發(fā)布時(shí)間:2023-03-28 14:26:07 來源:億速云 閱讀:151 作者:iii 欄目:開發(fā)技術(shù)

這篇文章主要介紹“Activiti7與Spring及Spring Boot整合開發(fā)的方法是什么”,在日常操作中,相信很多人在Activiti7與Spring及Spring Boot整合開發(fā)的方法是什么問題上存在疑惑,小編查閱了各式資料,整理出簡單好用的操作方法,希望對大家解答”Activiti7與Spring及Spring Boot整合開發(fā)的方法是什么”的疑惑有所幫助!接下來,請跟著小編一起來學(xué)習(xí)吧!

    Activiti整合Spring

    一、Activiti與Spring整合開發(fā)

    1.1 Activiti與Spring整合的配置

    1)、在pom.xml文件引入坐標(biāo)

    如下

    <properties>
            <slf4j.version>1.6.6</slf4j.version>
            <log4j.version>1.2.12</log4j.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-engine</artifactId>
            <version>7.0.0.Beta1</version>
        </dependency>
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-spring</artifactId>
            <version>7.0.0.Beta1</version>
        </dependency>
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-bpmn-model</artifactId>
            <version>7.0.0.Beta1</version>
        </dependency>
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-bpmn-converter</artifactId>
            <version>7.0.0.Beta1</version>
        </dependency>
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-json-converter</artifactId>
            <version>7.0.0.Beta1</version>
        </dependency>
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-bpmn-layout</artifactId>
            <version>7.0.0.Beta1</version>
        </dependency>
        <dependency>
            <groupId>org.activiti.cloud</groupId>
            <artifactId>activiti-cloud-services-api</artifactId>
            <version>7.0.0.Beta1</version>
        </dependency>
        <dependency>
            <groupId>aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.5.4</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.40</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.0.7.RELEASE</version>
        </dependency>
        <!-- log start -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-nop</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <!-- log end -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.5</version>
        </dependency>
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
        </dependency>
    </dependencies>
    <repositories>
        <repository>
            <id>alfresco</id>
            <name>Activiti Releases</name>
            <url>https://artifacts.alfresco.com/nexus/content/repositories/activiti-releases/</url>
            <releases>
                <enabled>true</enabled>
            </releases>
        </repository>
    </repositories>

    在Activiti中核心類的是ProcessEngine流程引擎,與Spring整合就是讓Spring來管理ProcessEngine

    通過org.activiti.spring.SpringProcessEngineConfiguration 與Spring整合方式來創(chuàng)建ProcessEngine對象。

    創(chuàng)建spring與activiti的整合配置文件:activiti-spring.xml(名稱不固定)

    2)、創(chuàng)建activiti-spring.xml
    <beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:tx="http://www.springframework.org/schema/tx"
           xmlns:aop="http://www.springframework.org/schema/aop"
           xsi:schemaLocation="http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans.xsd
            http://www.springframework.org/schema/tx
            http://www.springframework.org/schema/tx/spring-tx.xsd
            http://www.springframework.org/schema/aop
            http://www.springframework.org/schema/aop/spring-aop.xsd">
        <!-- 數(shù)據(jù)源 -->
        <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
            <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
            <property name="url" value="jdbc:mysql://localhost:3306/activiti"/>
            <property name="username" value="root"/>
            <property name="password" value="123456"/>
            <property name="maxActive" value="3"/>
            <property name="maxIdle" value="1"/>
        </bean>
        <!-- 工作流引擎配置bean -->
        <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
            <!-- 數(shù)據(jù)源 -->
            <property name="dataSource" ref="dataSource"/>
            <!-- 使用spring事務(wù)管理器 -->
            <property name="transactionManager" ref="transactionManager"/>
            <!-- 數(shù)據(jù)庫策略 -->
            <property name="databaseSchemaUpdate" value="drop-create"/>
        </bean>
        <!-- 流程引擎 -->
        <bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
            <property name="processEngineConfiguration" ref="processEngineConfiguration"/>
        </bean>
        <!-- 資源服務(wù)service -->
        <bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService"/>
        <!-- 流程運(yùn)行service -->
        <bean id="runtimeService" factory-bean="processEngine"  factory-method="getRuntimeService"/>
        <!-- 任務(wù)管理service -->
        <bean id="taskService" factory-bean="processEngine" factory-method="getTaskService"/>
        <!-- 歷史管理service -->
        <bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService"/>
        <!-- 事務(wù)管理器 -->
        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource"/>
        </bean>
        <!-- 通知 -->
        <tx:advice id="txAdvice" transaction-manager="transactionManager">
            <tx:attributes>
                <!-- 傳播行為 -->
                <tx:method name="save*" propagation="REQUIRED"/>
                <tx:method name="insert*" propagation="REQUIRED"/>
                <tx:method name="delete*" propagation="REQUIRED"/>
                <tx:method name="update*" propagation="REQUIRED"/>
                <tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
                <tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
            </tx:attributes>
        </tx:advice>
        <!-- 切面,根據(jù)具體項(xiàng)目修改切點(diǎn)配置
        <aop:config proxy-target-class="true">
            <aop:advisor advice-ref="txAdvice"
                         pointcut="execution(*com.itheima.service.impl..(..))"/>
        </aop:config>-->
    </beans>

    databaseSchemaUpdate的取值內(nèi)容:

    flase: 默認(rèn)值。activiti在啟動時(shí),會對比數(shù)據(jù)庫表中保存的版本,如果沒有表或者版本不匹配,將拋出異常。(生產(chǎn)環(huán)境常用)
    true: activiti會對數(shù)據(jù)庫中所有表進(jìn)行更新操作。如果表不存在,則自動創(chuàng)建。(開發(fā)時(shí)常用)
    create_drop: 在activiti啟動時(shí)創(chuàng)建表,在關(guān)閉時(shí)刪除表(必須手動關(guān)閉引擎,才能刪除表)。(單元測試常用)
    drop-create: 在activiti啟動時(shí)刪除原來的舊表,然后在創(chuàng)建新表(不需要手動關(guān)閉引擎)。

    1.2 測試Activiti與Spring整合

    1)、測試代碼
    /**
       測試activiti與spring整合是否成功
    **/
    @RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration(locations = "classpath:activiti-spring.xml")
     public class ActivitiTest {
         @Autowired
         private RepositoryService repositoryService;
         
         @Test
         public void test01(){
             System.out.println("部署對象:"+repositoryService);
         }
     }
    2)、執(zhí)行流程分析

    下面我們一起來分析Activiti與Spring整合加載的過程。

    1、加載activiti-spring.xml配置文件

    2、加載SpringProcessEngineConfiguration對象,這個對象它需要依賴注入dataSource對象和transactionManager對象。

    3、加載ProcessEngineFactoryBean工廠來創(chuàng)建ProcessEngine對象,而ProcessEngineFactoryBean工廠又需要依賴注入processEngineConfiguration對象。

    4、processEngine對象來負(fù)責(zé)創(chuàng)建我們的Service對象,從而簡化Activiti的開發(fā)過程。

    二、Activiti7與SpringBoot整合開發(fā)

    Activiti7發(fā)布正式版之后,它與SpringBoot2.x已經(jīng)完全支持整合開發(fā)。

    2.1 SpringBoot整合Activiti7的配置

    為了能夠?qū)崿F(xiàn)SpringBoot與Activiti7整合開發(fā),首先我們要引入相關(guān)的依賴支持。

    在工程的pom.xml文件中引入相關(guān)的依賴,其中activiti的依賴是:activiti-spring-boot-starter。

    具體依賴如下所示:

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.0.RELEASE</version>
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-spring-boot-starter</artifactId>
            <version>7.0.0.Beta2</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.29</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    通過該pom.xml文件所導(dǎo)入的坐標(biāo),我們就可以實(shí)現(xiàn)activiti7與Springboot整合。

    2.2 SpringBoot的application.yml文件配置

    為了能夠?qū)崿F(xiàn)Activiti7生成的表放到Mysql數(shù)據(jù)庫中,需要在配置文件application.yml中添加相關(guān)的配置

    注意:activiti7默認(rèn)沒有開啟數(shù)據(jù)庫歷史記錄,需要手動配置開啟

    spring:
      datasource:
        url: jdbc:mysql:///activiti?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT
        username: root
        password: 123456
        driver-class-name: com.mysql.jdbc.Driver
      activiti:
        #1.flase:默認(rèn)值。activiti在啟動時(shí),對比數(shù)據(jù)庫表中保存的版本,如果沒有表或者版本不匹配,將拋出異常
        #2.true: activiti會對數(shù)據(jù)庫中所有表進(jìn)行更新操作。如果表不存在,則自動創(chuàng)建
        #3.create_drop: 在activiti啟動時(shí)創(chuàng)建表,在關(guān)閉時(shí)刪除表(必須手動關(guān)閉引擎,才能刪除表)
        #4.drop-create: 在activiti啟動時(shí)刪除原來的舊表,然后在創(chuàng)建新表(不需要手動關(guān)閉引擎)
        database-schema-update: true
        #檢測歷史表是否存在 activiti7默認(rèn)沒有開啟數(shù)據(jù)庫歷史記錄 啟動數(shù)據(jù)庫歷史記錄
        db-history-used: true
        #記錄歷史等級 可配置的歷史級別有none, activity, audit, full
        #none:不保存任何的歷史數(shù)據(jù),因此,在流程執(zhí)行過程中,這是最高效的。
        #activity:級別高于none,保存流程實(shí)例與流程行為,其他數(shù)據(jù)不保存。
        #audit:除activity級別會保存的數(shù)據(jù)外,還會保存全部的流程任務(wù)及其屬性。audit為history的默認(rèn)值。
        #full:保存歷史數(shù)據(jù)的最高級別,除了會保存audit級別的數(shù)據(jù)外,還會保存其他全部流程相關(guān)的細(xì)節(jié)數(shù)據(jù),包括一些流程參數(shù)等。
        history-level: full
        #校驗(yàn)流程文件,默認(rèn)校驗(yàn)resources下的processes文件夾里的流程文件
        check-process-definitions: false

    2.3 編寫啟動類

    package com.itheima;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    @SpringBootApplication
    public class ActApplication {
        public static void main(String[] args) {
            SpringApplication.run(ActApplication.class,args);
        }
    }

    2.4 添加SpringSecurity安全框架整合配置

    因?yàn)锳ctiviti7與SpringBoot整合后,默認(rèn)情況下,集成了SpringSecurity安全框架,這樣我們就要去準(zhǔn)備SpringSecurity整合進(jìn)來的相關(guān)用戶權(quán)限配置信息。

    SpringBoot的依賴包已經(jīng)將SpringSecurity的依賴包也添加進(jìn)項(xiàng)目中。

    2.4.1 添加SecurityUtil類

    為了能夠快速實(shí)現(xiàn)SpringSecurity安全框架的配置,所添加的一個組件。

    package com.itheima.utils;
    
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.beans.factory.annotation.Qualifier;
    import org.springframework.security.core.Authentication;
    import org.springframework.security.core.GrantedAuthority;
    import org.springframework.security.core.context.SecurityContextHolder;
    import org.springframework.security.core.context.SecurityContextImpl;
    import org.springframework.security.core.userdetails.UserDetails;
    import org.springframework.security.core.userdetails.UserDetailsService;
    import org.springframework.stereotype.Component;
    
    import java.util.Collection;
    
    
    @Component
    public class SecurityUtil {
        private Logger logger = LoggerFactory.getLogger(SecurityUtil.class);
    
         @Autowired
         @Qualifier("myUserDetailsService")
         private UserDetailsService userDetailsService;
     
        public void logInAs(String username) {
         UserDetails user = userDetailsService.loadUserByUsername(username);
    
         if (user == null) {
             throw new IllegalStateException("User " + username + " doesn't exist, please provide a valid user");
         }
         logger.info("> Logged in as: " + username);
    
         SecurityContextHolder.setContext(
                 new SecurityContextImpl(
                         new Authentication() {
                             @Override
                             public Collection<? extends GrantedAuthority> getAuthorities() {
                                 return user.getAuthorities();
                             }
                             @Override
                             public Object getCredentials() {
                                 return user.getPassword();
                             }
                             @Override
                             public Object getDetails() {
                                 return user;
                             }
                             @Override
                             public Object getPrincipal() {
                                 return user;
                             }
                             @Override
                             public boolean isAuthenticated() {
                                 return true;
                             }
                             @Override
                             public void setAuthenticated(boolean isAuthenticated) throws IllegalArgumentException { }
                             @Override
                             public String getName() {
                                 return user.getUsername();
                             }
         }));
         org.activiti.engine.impl.identity.Authentication.setAuthenticatedUserId(username);
     }
      }

    這個類可以從我們下載的Activiti7官方提供的Example中找到。

    2.4.2 添加DemoApplicationConfig類

    在Activiti7官方下載的Example中找到DemoApplicationConfig類,它的作用是為了實(shí)現(xiàn)SpringSecurity框架的用戶權(quán)限的配置,這樣我們就可以在系統(tǒng)中使用用戶權(quán)限信息。

    本次項(xiàng)目中基本是在文件中定義出來的用戶信息,當(dāng)然也可以是數(shù)據(jù)庫中查詢的用戶權(quán)限信息。

    后面處理流程時(shí)用到的任務(wù)負(fù)責(zé)人,需要添加在這里

    package com.itheima.config;
    
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.security.core.authority.SimpleGrantedAuthority;
    import org.springframework.security.core.userdetails.User;
    import org.springframework.security.core.userdetails.UserDetailsService;
    import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
    import org.springframework.security.crypto.password.PasswordEncoder;
    import org.springframework.security.provisioning.InMemoryUserDetailsManager;
    
    import java.util.Arrays;
    import java.util.List;
    import java.util.stream.Collectors;
    
    @Configuration
    public class DemoApplicationConfiguration {
        private Logger logger = LoggerFactory.getLogger(DemoApplicationConfiguration.class);
         @Bean
         public UserDetailsService myUserDetailsService() {
             InMemoryUserDetailsManager inMemoryUserDetailsManager = new InMemoryUserDetailsManager();
             //這里添加用戶,后面處理流程時(shí)用到的任務(wù)負(fù)責(zé)人,需要添加在這里
             String[][] usersGroupsAndRoles = {
                     {"jack", "password", "ROLE_ACTIVITI_USER", "GROUP_activitiTeam"},
                     {"rose", "password", "ROLE_ACTIVITI_USER", "GROUP_activitiTeam"},
                     {"tom", "password", "ROLE_ACTIVITI_USER", "GROUP_activitiTeam"},
                     {"other", "password", "ROLE_ACTIVITI_USER", "GROUP_otherTeam"},
                     {"system", "password", "ROLE_ACTIVITI_USER"},
                     {"admin", "password", "ROLE_ACTIVITI_ADMIN"},
             };
    
             for (String[] user : usersGroupsAndRoles) {
                 List<String> authoritiesStrings = Arrays.asList(Arrays.copyOfRange(user, 2, user.length));
                 logger.info("> Registering new user: " + user[0] + " with the following Authorities[" + authoritiesStrings + "]");
                 inMemoryUserDetailsManager.createUser(new User(user[0], passwordEncoder().encode(user[1]),
                         authoritiesStrings.stream().map(s -> new SimpleGrantedAuthority(s)).collect(Collectors.toList())));
             }
    
             return inMemoryUserDetailsManager;
         }
         @Bean
         public PasswordEncoder passwordEncoder() {
             return new BCryptPasswordEncoder();
         }
    }

    2.5 創(chuàng)建Bpmn文件

    Activiti7可以自動部署流程,前提是在resources目錄下,創(chuàng)建一個新的目錄processes,用來放置bpmn文件。

    創(chuàng)建一個簡單的Bpmn流程文件,并設(shè)置任務(wù)的用戶組Candidate Groups。

    Candidate Groups中的內(nèi)容與上面DemoApplicationConfiguration類中出現(xiàn)的用戶組名稱要保持一致,可以填寫:activitiTeam 或者 otherTeam。

    這樣填寫的好處:當(dāng)不確定到底由誰來負(fù)責(zé)當(dāng)前任務(wù)的時(shí)候,只要是Groups內(nèi)的用戶都可以拾取這個任務(wù)

    Activiti7與Spring及Spring?Boot整合開發(fā)的方法是什么

    2.6 使用Junit方式測試

    package com.itheima.test;
    
    import com.itheima.utils.SecurityUtil;
    import org.activiti.api.process.model.ProcessInstance;
    import org.activiti.api.process.model.builders.ProcessPayloadBuilder;
    import org.activiti.api.process.runtime.ProcessRuntime;
    import org.activiti.api.runtime.shared.query.Page;
    import org.activiti.api.runtime.shared.query.Pageable;
    import org.activiti.api.task.model.Task;
    import org.activiti.api.task.model.builders.TaskPayloadBuilder;
    import org.activiti.api.task.runtime.TaskRuntime;
    import org.activiti.engine.repository.ProcessDefinition;
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;
    import org.springframework.test.context.junit4.SpringRunner;
    
    @RunWith(SpringRunner.class)
    @SpringBootTest
     public class Actviti7DemoApplicationTests {
         @Autowired
         private ProcessRuntime processRuntime;
         @Autowired
         private TaskRuntime taskRuntime;
         @Autowired
         private SecurityUtil securityUtil;
    
        @Test
        public void testActBoot(){
            System.out.println(taskRuntime);
        }
    
        /**
         * 查看流程定義
         */
        @Test
        public void contextLoads() {
            securityUtil.logInAs("system");
            Page<org.activiti.api.process.model.ProcessDefinition> processDefinitionPage =
                    processRuntime.processDefinitions(Pageable.of(0, 10));
            System.out.println("可用的流程定義數(shù)量:" + processDefinitionPage.getTotalItems());
            for (org.activiti.api.process.model.ProcessDefinition pd : processDefinitionPage.getContent()) {
                System.out.println("流程定義:" + pd);
            }
        }
    
    
        /**
         * 啟動流程實(shí)例
         */
        @Test
        public void testStartProcess() {
            securityUtil.logInAs("system");
            ProcessInstance pi = processRuntime.start(ProcessPayloadBuilder.
                    start().
                    withProcessDefinitionKey("myProcess").
                    build());
            System.out.println("流程實(shí)例ID:" + pi.getId());
        }
    
    
        /**
         **查詢?nèi)蝿?wù),并完成自己的任務(wù)
         **/
        @Test
        public void testTask() {
            securityUtil.logInAs("jack");
            Page<Task> taskPage=taskRuntime.tasks(Pageable.of(0,10));
            if (taskPage.getTotalItems()>0){
                for (Task task:taskPage.getContent()){
                    taskRuntime.claim(TaskPayloadBuilder.
                            claim().
                            withTaskId(task.getId()).build());
                    System.out.println("任務(wù):"+task);
                    taskRuntime.complete(TaskPayloadBuilder.
                            complete().
                            withTaskId(task.getId()).build());
                }
            }
            Page<Task> taskPage2=taskRuntime.tasks(Pageable.of*(0,10));
            if (taskPage2.getTotalItems()>0){
                System.out.println("任務(wù):"+taskPage2.getContent());
            }
        }
    }

    到此,關(guān)于“Activiti7與Spring及Spring Boot整合開發(fā)的方法是什么”的學(xué)習(xí)就結(jié)束了,希望能夠解決大家的疑惑。理論與實(shí)踐的搭配能更好的幫助大家學(xué)習(xí),快去試試吧!若想繼續(xù)學(xué)習(xí)更多相關(guān)知識,請繼續(xù)關(guān)注億速云網(wǎng)站,小編會繼續(xù)努力為大家?guī)砀鄬?shí)用的文章!

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