2021全网最全Activiti7教程04(Activiti7整合篇-欢迎收藏)

朴灿烈づ我的快乐病毒、 2022-10-06 06:50 207阅读 0赞

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# Activiti整合篇 #

## 1. 和Spring整合 ##

### 1.1 添加相关的依赖 ###

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
    
        <groupId>com.bobo</groupId>
        <artifactId>ActivitiDemo02Spring</artifactId>
        <version>1.0-SNAPSHOT</version>
    
    
        <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>
                <exclusions>
                    <exclusion>
                        <groupId>com.github.jgraph</groupId>
                        <artifactId>jgraphx</artifactId>
                    </exclusion>
                </exclusions>
            </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>8.0.11</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>
            
            <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>
            
            <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>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.18.12</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>
        <build>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-surefire-plugin</artifactId>
                    <version>2.18.1</version>
                    <configuration>
                        <skipTests>true</skipTests>
                    </configuration>
                </plugin>
            </plugins>
        </build>
    
    </project>

### 1.2 添加整合的配置文件 ###

添加一个Spring的配置文件，并在其中完成Activiti的整合操作

databaseSchemaUpdate的取值注意：

> 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）。

### 1.3 创建测试类测试 ###

package com.bobo.test;
    
    import org.activiti.engine.RepositoryService;
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.test.context.ContextConfiguration;
    import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
    
    @RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration(locations = { "classpath:activiti-spring.xml"})
    public class ActivitiTest { 
    
        @Autowired
        private RepositoryService repositoryService;
    
        @Test
        public void test01(){ 
            System.out.println(repositoryService);
        }
    
    }

通过方法的执行我们能够发现相关的表结构在数据库中完成了创建，说明Activiti和Spring的整合成功。

## 2. 和SpringBoot的整合 ##

Activiti7发布正式版本之后，它和SpringBoot2.x已经完全整合开发了

### 2.1 添加相关的依赖 ###

<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
                <exclusions>
                    <exclusion>
                        <groupId>org.junit.vintage</groupId>
                        <artifactId>junit-vintage-engine</artifactId>
                    </exclusion>
                </exclusions>
            </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>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
            </dependency>

### 2.2 修改配置文件 ###

# 配置Spring的数据源
    spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
    spring.datasource.url=jdbc:mysql:///activiti?characterEncoding=utf-8&nullCatalogMeansCurrent=true&serverTimezone=UTC
    spring.datasource.name=root
    spring.datasource.password=123456
    
    # activiti的配置
    #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
    #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
    #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）
    #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）
    spring.activiti.database-schema-update=true
    # 检测历史表是否存在， Activiti7中默认是没有开启数据库历史记录的，启动数据库历史记录
    spring.activiti.db-history-used=true
    #记录历史等级 可配置的历史级别有none, activity, audit, full
    #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。
    #activity：级别高于none，保存流程实例与流程行为，其他数据不保存。
    #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。
    #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。
    spring.activiti.history-level=full
    # 校验流程文件，默认校验resouces下的 process 文件夹里的流程文件
    spring.activiti.check-process-definitions=false

### 2.3 整合SpringSecurity ###

因为Activiti7和SpringBoot整合后，默认情况下，集成了SpringSecurity安全框架，这样我们就要准备SpringSecurity的相关配置信息

添加一个SpringSecurity的工具类

package com.bobo.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.context.annotation.ComponentScan;
    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);
        }
    }

这个类可以从Activiti7官方提供的Example中找到。

添加一个SpringSecurity的配置文件

package com.bobo.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 SpringSecurityConfiguration { 
        private Logger logger = LoggerFactory.getLogger(SpringSecurityConfiguration.class);
        @Bean
        public UserDetailsService myUserDetailsService() { 
            InMemoryUserDetailsManager inMemoryUserDetailsManager = new InMemoryUserDetailsManager();
            //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
            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();
        }
    }

### 2.4 创建bpmn文件 ###

创建一个简单的bpmn文件，并设置任务的用户组，CandidateGroups，CandidateGroups中的内容要与在SpringSecurity的配置文件中配置的用户组的名称要保持一致，可以填写activitTeam或者otherTeam。这样填写的好处是，当不确定到底由谁来负责当前的任务的时候，只要是Groups内的用户都可以拾取这个任务  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4NTI2NTcz_size_16_color_FFFFFF_t_70]  
  Activiti7中可以自动部署流程，前提是在resources目录下，创建一个新的目录processes，用来放置bpmn文件

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4NTI2NTcz_size_16_color_FFFFFF_t_70 1]

### 2.5 单元测试 ###

package com.bobo;
    
    import com.bobo.utils.SecurityUtil;
    import org.activiti.api.process.model.ProcessDefinition;
    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.ClaimTaskPayloadBuilder;
    import org.activiti.api.task.model.builders.TaskPayloadBuilder;
    import org.activiti.api.task.model.payloads.ClaimTaskPayload;
    import org.activiti.api.task.runtime.TaskRuntime;
    import org.activiti.engine.RepositoryService;
    import org.junit.jupiter.api.Test;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;
    
    @SpringBootTest
    class ActSpringbootApplicationTests { 
    
        @Autowired
        private ProcessRuntime processRuntime;
    
        @Autowired
        private TaskRuntime taskRuntime;
    
        @Autowired
        private SecurityUtil securityUtil;
    
        @Autowired
        private RepositoryService repositoryService;
    
        @Test
        void contextLoads() { 
            System.out.println(taskRuntime);
        }
    
        /** * 查询流程的定义 */
        @Test
        public void test02(){ 
            securityUtil.logInAs("system");
            Page<ProcessDefinition> processDefinitionPage =
                    processRuntime.processDefinitions(Pageable.of(0, 10));
            System.out.println("可用的流程定义数量:" + processDefinitionPage.getTotalItems());
            for (ProcessDefinition processDefinition : processDefinitionPage.getContent()) { 
                System.out.println("流程定义：" + processDefinition);
            }
        }
    
        /** * 部署流程 */
        @Test
        public void test03(){ 
            repositoryService.createDeployment()
                    .addClasspathResource("processes/my-evection.bpmn")
                    .addClasspathResource("processes/my-evection.png")
                    .name("出差申请单")
                    .deploy();
        }
    
        /** * 启动流程实例 */
        @Test
        public void test04(){ 
            securityUtil.logInAs("system");
            ProcessInstance processInstance = processRuntime.start(ProcessPayloadBuilder
                    .start()
                    .withProcessDefinitionKey("my-evection")
                    .build()
            );
            System.out.println("流程实例id:" + processInstance.getId());
        }
    
        /** * 任务查询、拾取及完成操作 */
        @Test
        public void test05(){ 
            securityUtil.logInAs("jack");
            Page<Task> tasks = taskRuntime.tasks(Pageable.of(0, 10));
            if(tasks != null && tasks.getTotalItems() > 0){ 
                for (Task task : tasks.getContent()) { 
                    // 拾取任务
                    taskRuntime.claim(TaskPayloadBuilder
                            .claim()
                            .withTaskId(task.getId())
                            .build()
                    );
                    System.out.println("任务：" + 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("任务：" + taskPage2.getContent());
            }
        }
    
    }

~好了整个Activiti7的相关内容就给大家介绍到这里，欢迎大家点赞关注加收藏哦! V\_V

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4NTI2NTcz_size_16_color_FFFFFF_t_70 1]: /images/20221005/defe8167cbfa425db729131493f9f15c.png