如下
<properties>
<slf4j.version>1.6.6slf4j.version>
<log4j.version>1.2.12log4j.version>
properties>
<dependencies>
<dependency>
<groupId>org.activitigroupId>
<artifactId>activiti-engineartifactId>
<version>7.0.0.Beta1version>
dependency>
<dependency>
<groupId>org.activitigroupId>
<artifactId>activiti-springartifactId>
<version>7.0.0.Beta1version>
dependency>
<dependency>
<groupId>org.activitigroupId>
<artifactId>activiti-bpmn-modelartifactId>
<version>7.0.0.Beta1version>
dependency>
<dependency>
<groupId>org.activitigroupId>
<artifactId>activiti-bpmn-converterartifactId>
<version>7.0.0.Beta1version>
dependency>
<dependency>
<groupId>org.activitigroupId>
<artifactId>activiti-json-converterartifactId>
<version>7.0.0.Beta1version>
dependency>
<dependency>
<groupId>org.activitigroupId>
<artifactId>activiti-bpmn-layoutartifactId>
<version>7.0.0.Beta1version>
dependency>
<dependency>
<groupId>org.activiti.cloudgroupId>
<artifactId>activiti-cloud-services-apiartifactId>
<version>7.0.0.Beta1version>
dependency>
<dependency>
<groupId>aspectjgroupId>
<artifactId>aspectjweaverartifactId>
<version>1.5.4version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>5.1.40version>
dependency>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.12version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-testartifactId>
<version>5.0.7.RELEASEversion>
dependency>
<dependency>
<groupId>log4jgroupId>
<artifactId>log4jartifactId>
<version>${log4j.version}version>
dependency>
<dependency>
<groupId>org.slf4jgroupId>
<artifactId>slf4j-apiartifactId>
<version>${slf4j.version}version>
dependency>
<dependency>
<groupId>org.slf4jgroupId>
<artifactId>slf4j-log4j12artifactId>
<version>${slf4j.version}version>
dependency>
<dependency>
<groupId>org.slf4jgroupId>
<artifactId>slf4j-nopartifactId>
<version>${slf4j.version}version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatisartifactId>
<version>3.4.5version>
dependency>
<dependency>
<groupId>commons-dbcpgroupId>
<artifactId>commons-dbcpartifactId>
<version>1.4version>
dependency>
dependencies>
<repositories>
<repository>
<id>alfrescoid>
<name>Activiti Releasesname>
<url>https://artifacts.alfresco.com/nexus/content/repositories/activiti-releases/url>
<releases>
<enabled>trueenabled>
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)
<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">
<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>
<bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
<property name="dataSource" ref="dataSource"/>
<property name="transactionManager" ref="transactionManager"/>
<property name="databaseSchemaUpdate" value="drop-create"/>
bean>
<bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
<property name="processEngineConfiguration" ref="processEngineConfiguration"/>
bean>
<bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService"/>
<bean id="runtimeService" factory-bean="processEngine" factory-method="getRuntimeService"/>
<bean id="taskService" factory-bean="processEngine" factory-method="getTaskService"/>
<bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService"/>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
bean>
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<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>
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)。
/**
测试activiti与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("部署对象:"+repositoryService);
}
}
下面我们一起来分析Activiti与Spring整合加载的过程。
1、加载activiti-spring.xml配置文件
2、加载SpringProcessEngineConfiguration对象,这个对象它需要依赖注入dataSource对象和transactionManager对象。
3、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。
4、processEngine对象来负责创建我们的Service对象,从而简化Activiti的开发过程。
Activiti7发布正式版之后,它与SpringBoot2.x已经完全支持整合开发。
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.bootgroupId>
<artifactId>spring-boot-starter-parentartifactId>
<version>2.1.0.RELEASEversion>
parent>
<properties>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding>
<java.version>1.8java.version>
properties>
<dependencies>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-jdbcartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-testartifactId>
dependency>
<dependency>
<groupId>org.activitigroupId>
<artifactId>activiti-spring-boot-starterartifactId>
<version>7.0.0.Beta2version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>5.1.29version>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
dependency>
dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-maven-pluginartifactId>
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。
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
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);
}
}
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。
为了能够快速实现SpringSecurity安全框架的配置,所添加的一个组件。
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);
}
}
这个类可以从我们下载的Activiti7官方提供的Example中找到。
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
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();
//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();
}
}
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
import com.tzm.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);
}
/**
* 查看流程定义
*/
@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);
}
}
/**
* 启动流程实例
*/
@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());
}
/**
**查询任务,并完成自己的任务
**/
@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());
}
}
}