Activiti与SpringBoot的整合

1.pom依赖

    <!--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/> <!-- lookup parent from repository --></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-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.数据库配置

spring:datasource:url: jdbc:mysql://localhost:3306/activiti?useUnicode=true&characterEncoding=utf8&serverTimezone=GMTusername : rootpassword : rootdriver-class-name: com.mysql.jdbc.Driver

3.添加SpringSecurity安全框架

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。

（1）添加SecurityUtil类

@Component
public class SecurityUtil {
@Autowiredprivate 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() {@Overridepublic Collection<? extends GrantedAuthority> getAuthorities() {return user.getAuthorities();}
@Overridepublic Object getCredentials() {return user.getPassword();}
@Overridepublic Object getDetails() {return user;}
@Overridepublic Object getPrincipal() {return user;}
@Overridepublic boolean isAuthenticated() {return true;}
@Overridepublic void setAuthenticated(boolean isAuthenticated) throws IllegalArgumentException {
}
@Overridepublic String getName() {return user.getUsername();}}));org.activiti.engine.impl.identity.Authentication.setAuthenticatedUserId(username);}
}

（2）添加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。

@Configuration
@EnableWebSecurity
public class DemoApplicationConfiguration extends WebSecurityConfigurerAdapter {
private Logger logger = LoggerFactory.getLogger(DemoApplicationConfiguration.class);
@Override@Autowiredpublic void configure(AuthenticationManagerBuilder auth) throws Exception {auth.userDetailsService(myUserDetailsService());}
@Beanpublic UserDetailsService myUserDetailsService() {
InMemoryUserDetailsManager inMemoryUserDetailsManager = new InMemoryUserDetailsManager();
String[][] usersGroupsAndRoles = {{"salaboy", "password", "ROLE_ACTIVITI_USER", "GROUP_activitiTeam"},{"ryandawsonuk", "password", "ROLE_ACTIVITI_USER", "GROUP_activitiTeam"},{"erdemedeiros", "password", "ROLE_ACTIVITI_USER", "GROUP_activitiTeam"},{"system", "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(SimpleGrantedAuthority::new).collect(Collectors.toList())));}

return inMemoryUserDetailsManager;}

@Overrideprotected void configure(HttpSecurity http) throws Exception {http.csrf().disable().authorizeRequests().anyRequest().authenticated().and().httpBasic();}
@Beanpublic PasswordEncoder passwordEncoder() {return new BCryptPasswordEncoder();}
}

（3）创建测试类

@RunWith(SpringRunner.class)
@SpringBootTest
public class Actviti7DemoApplicationTests {@Autowiredprivate ProcessRuntime processRuntime;@Autowiredprivate TaskRuntime taskRuntime;@Autowiredprivate SecurityUtil securityUtil;
}

（4）查看流程定义信息

activiti7与SpringBoot整合后会自动读取resources/processes下的所有bpmn流程图

    @Testpublic void contextLoads() {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);}}

（5）启动流程实例

@Test
public void testStartProcess() {securityUtil.logInAs("system");ProcessInstance pi = processRuntime.start(ProcessPayloadBuilder.start().withProcessDefinitionKey("myProcess_1").build());System.out.println("流程实例ID：" + pi.getId());
}

（6）查询并完成任务

该实例的流程图中，已经指定两个步骤的指派的组。我们可以用指定组中的用户登录去查询任务并完成任务。

    @Testpublic void testTask() {securityUtil.logInAs("ryandawsonuk");Page<Task> taskPage = taskRuntime.tasks(Pageable.of(0, 10));if (taskPage.getTotalItems() > 0) {//遍历任务列表for (Task task : taskPage.getContent()) {//拾取任务 candidateGroups="activitiTeam"taskRuntime.claim(TaskPayloadBuilder.claim().withTaskId(task.getId()).build());System.out.println("任务：" + task);//执行任务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());}}

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