sts4 集成 springboot 和 activiti5

建立 springboot项目

勾选mysql web等

添加activiti的jar的pom坐标

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>cn.taoao</groupId>
    <artifactId>demo_activiti</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo_activiti</name>
    <description>demo_activiti</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        
        <!-- user define-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.2.4</version>
        </dependency>
        
         <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.4</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.activiti/activiti-engine -->
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-engine</artifactId>
            <version>5.22.0</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.activiti/activiti-spring -->
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-spring</artifactId>
            <version>5.23.0</version>
        </dependency>
        
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

然后在src/main/resource 下建立 activiti.cfg.xml 文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd">
  
  
  
  <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
      <property name="jdbcDriver" value="com.mysql.cj.jdbc.Driver"></property>
      <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/activiti_demo"></property>
      <property name="jdbcUsername" value="root"></property>
      <property name="jdbcPassword" value="xxxxx"></property>
   
      <property name="databaseSchemaUpdate" value="true"></property>
  </bean>      
</beans>

这时，代码若没有提示property的属性，可以安装sts spring ide插件，e4.18,可以通过about 

 e4.18版本号，通过以下获得

 勾选自动存图片功能

建立测试类

    @Test
    void initTable() {
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
        System.out.println(processEngine);
    }

即可产生所需的25张表。

---

另外，因为导入mysql和spring jdbc ，可能会产生报错，需要配一下数据源

建立application.yml 文件。然后，配置druid数据源。

 可以手写数据源

@Test
    void initTables() {
        DriverManagerDataSource ds = new DriverManagerDataSource();
        ds.setDriverClassName("com.mysql.cj.jdbc.Driver");
        ds.setUrl("jdbc:mysql://localhost:3306/activiti_demo");
        ds.setUsername("root");
        ds.setPassword("xxxxx");
        
        ProcessEngineConfiguration pec = ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration();
        pec.setDataSource(ds);
        pec.setDatabaseSchemaUpdate("true");
        pec.buildProcessEngine();
        
        System.out.println(pec);
    }

因为已经引入了druid数据源，可以在test文件中，直接引用

    @Autowired
    private DruidDataSource datasource;
    
    @Test
    void initTables2() {
        ProcessEngineConfiguration pec = ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration();
        pec.setDataSource(datasource);
        pec.setDatabaseSchemaUpdate("true");
        pec.buildProcessEngine();
                
        System.out.println(pec);
    }

在测试的时候，只要鼠标定位在 void initTables2 这里，就可以单独执行这个test，如果定位在空行，或者注释上，会执行其他和所有的test。