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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
<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
<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"> <!-- 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="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"> <!-- 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.itheima.service.impl..(..))"/> </aop:config>--></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
@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations = "classpath:activiti-spring.xml") public class ActivitiTest { @Autowired private RepositoryService repositoryService; @Test public void test01(){ System.out.println("部署对象:"+repositoryService); } }
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。
加载activiti-spring.xml配置文件
加载SpringProcessEngineConfiguration对象,这个对象它需要依赖注入dataSource对象和transactionManager对象。
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。
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:
<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
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) database-schema-update: true #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 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。 history-level: full #校验流程文件,默认校验resources下的processes文件夹里的流程文件 check-process-definitions: false
2.3 编写启动类
package com.itheima;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic 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。
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;@Componentpublic 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
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;@Configurationpublic class DemoApplicationConfiguration { private Logger logger = LoggerFactory.getLogger(DemoApplicationConfiguration.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(); }}
2.5 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
2.6 使用Junit方式测试
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); } @Test public void contextLoads() { securityUtil.logInAs("system"); Page<org.activiti.api.process.model.ProcessDefinition> processDefinitionPage = processRuntime.processDefinitions(Pageable.of(0, 10)); System.out.println("可用的流程定义数量:" + processDefinitionPage.getTotalItems()); for (org.activiti.api.process.model.ProcessDefinition pd : processDefinitionPage.getContent()) { System.out.println("流程定义:" + pd); } } @Test public void testStartProcess() { securityUtil.logInAs("system"); ProcessInstance pi = processRuntime.start(ProcessPayloadBuilder. start(). withProcessDefinitionKey("myProcess"). build()); System.out.println("流程实例ID:" + pi.getId()); } @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()); } }}
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