Activiti工作流介绍-2

Activiti工作流介绍-2

一 Activiti整合Spring开发

1 导入pom.xml坐标

 <properties>
        <slf4j.version>1.6.6</slf4j.version>
  <log4j.version>1.2.12</log4j.version>
    </properties>

    <dependencies>
        <!--流程引擎 -->
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-engine</artifactId>
            <version>7.0.0.Beta1</version>
        </dependency>
        <!--activiti与spring整合的-->
        <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>

2 创建activiti-spring.xml文件

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       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/context
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop.xsd
    ">

    <!-- 数据源 -->
    <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="root"/>
        <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">
        <!-- 数据源 -->
        <property name="dataSource" ref="dataSource"/>
        <!-- 使用spring事务管理器 -->
        <property name="transactionManager" ref="transactionManager"/>
        <!-- 数据库策略 -->
        <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>
    <!-- 资源服务service -->
    <bean id="repositoryService" factory-bean="processEngine"
          factory-method="getRepositoryService"/>
    <!-- 流程运行service -->
    <bean id="runtimeService" factory-bean="processEngine"
          factory-method="getRuntimeService"/>
    <!-- 任务管理service -->
    <bean id="taskService" factory-bean="processEngine"
          factory-method="getTaskService"/>
    <!-- 历史管理service -->
    <bean id="historyService" factory-bean="processEngine"
          factory-method="getHistoryService"/>

    <!-- 事务管理器 -->
    <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>
            <!-- 传播行为 -->
            <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，根据具体项目修改切点配置 -->
    <aop:config proxy-target-class="true">
        <aop:advisor advice-ref="txAdvice"
                     pointcut="execution(* com.cf.service.impl.*.*(..))"/>
    </aop:config>
</beans>

3 测试整合效果

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:activiti-spring.xml")
public class ActivitiSpringIntegrationTest {
    
    

    @Autowired
    private RepositoryService repositoryService;

    //判断整合成功与否,看是否读取配置文件,生成Repositoryervice对象
    @Test
    public void testDeploymentObj(){
    
    
        System.out.println("部署对象："+repositoryService);
    }
}

二 Activiti和SpringBoot整合

1 导入pom.xml坐标

<!--activiti7与SpringBoot整合的相关依赖-->
<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.0.RELEASE</version>
    <relativePath/>
</parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <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>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.activiti/activiti-spring-boot-starter -->
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-spring-boot-starter</artifactId>
            <version>7.0.0.Beta2</version>
        </dependency>

        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.5</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.27</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

2 创建application.yml文件

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/activiti?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT
    username : root
    password : root
    driver-class-name: com.mysql.jdbc.Driver
  activiti:
    # flase 默认值,activiti在启动时,对比数据库中保存的版本,如果没有表或者版本不匹配,会抛出异常
    # true  activiti会对数据库中所有表进行更新操作,如果表不存在,则自动创阿金
    # 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)
    # drop-create 在activiti启动时删除原来的旧表,然后创建新表(不需要手动关闭引擎)
    database-schema-update: true
    # 检测历史信息表是否存在,不存在开启历史表 ,activiti7默认不生成历史信息表
    # none 不保存任何历史数据,在流程执行中,最高效
    # 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 除了activity级别会保存的数据外,还会保存全部流程任务及其属性,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
    history-level: full

3 添加SpringSecurity安全整合配置

Activiti7与SpringBoot整合,默认集成了SpringSecurity安全框架,需要准备相关的用户权限配置信息.

1 添加SecurityUtil类

@Component
public class SecurityUtil {
    
    

    @Autowired
    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");
        }

        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);
    }
}

2 创建配置类

@Configuration
@EnableWebSecurity
public class ApplicationConfiguration extends WebSecurityConfigurerAdapter {
    
    

    private Logger logger = LoggerFactory.getLogger(ApplicationConfiguration.class);

    @Override
    @Autowired
    public void configure(AuthenticationManagerBuilder auth) throws Exception {
    
    
        auth.userDetailsService(myUserDetailsService());
    }

    @Bean
    public UserDetailsService myUserDetailsService() {
    
    

        InMemoryUserDetailsManager inMemoryUserDetailsManager = new InMemoryUserDetailsManager();

        //构造用户信息
        String[][] usersGroupsAndRoles = {
    
    
                {
    
    "salaboy", "password", "ROLE_ACTIVITI_USER", "GROUP_activitiTeam"},
                {
    
    "ryandawsonuk", "password", "ROLE_ACTIVITI_USER", "GROUP_activitiTeam"},
                {
    
    "erdemedeiros", "password", "ROLE_ACTIVITI_USER", "GROUP_activitiTeam"},
                {
    
    "other", "password", "ROLE_ACTIVITI_USER", "GROUP_otherTeam"},
                {
    
    "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;
    }


    @Override
    protected void configure(HttpSecurity http) throws Exception {
    
    
        http
                .csrf().disable()
                .authorizeRequests()
                .anyRequest()
                .authenticated()
                .and()
                .httpBasic();
 
    }

    @Bean
    public PasswordEncoder passwordEncoder() {
    
    
        return new BCryptPasswordEncoder();
    }
}

4 创建BPMN文件

​ 在resources目录下,创建一个新的processes,放置bpmn文件, SpringBoot项目可以自动部署.

5 创建启动类

@SpringBootApplication
public class ActvitiDemoApplication {
    
    

	public static void main(String[] args) {
    
    
		SpringApplication.run(ActvitiDemoApplication.class, args);
	}
}

6 创建测试类

@RunWith(SpringRunner.class)
@SpringBootTest
public class ActvitiDemoApplicationTests {
    
    
    @Autowired
    private ProcessRuntime processRuntime;
    @Autowired
    private TaskRuntime taskRuntime;
    @Autowired
    private SecurityUtil securityUtil;


    /**
     * 查看流程定义
     * 在流程定义表可查看
     */
    @Test
    public void contextLoads() {
    
    
          //设置用户
        securityUtil.logInAs("salaboy");
        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 pd : processDefinitionPage.getContent()) {
    
    
            System.out.println("流程定义：" + pd);
        }
    }
        
    /*
     * 启动流程实例
     *在任务表中可查看
     */
   @Test
    public void testStartProcess() {
    
    
          //设置用户
        securityUtil.logInAs("system");
        ProcessInstance pi = processRuntime.start(ProcessPayloadBuilder.start().withProcessDefinitionKey("myProcess")
                .build());
        System.out.println("流程实例ID：" + pi.getId());
    }

    /**
     * 查询任务，并完成自己的任务
     */
    @Test
    public void testTask() {
    
    
        //设置用户
        securityUtil.logInAs("ryandawsonuk");
        
        //查询任务
        Page<Task> taskPage=taskRuntime.tasks(Pageable.of(0,10));
        if (taskPage.getTotalItems()>0){
    
    
            for (Task task:taskPage.getContent()){
    
    
               //拾取任务 taskRuntime.claim(TaskPayloadBuilder.claim().withTaskId(task.getId()).build());
                System.out.println("任务："+task);
               //完成任务 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());
        }
    }
}