Activiti流程引擎配置实战

一 pom

<?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 http://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>2.0.0.RELEASE</version>
        <relativePath/>
    </parent>
    <groupId>com.syc.activiti</groupId>
    <artifactId>activiti6-helloworld</artifactId>
    <version>1.0-SNAPSHOT</version>
    <dependencies>
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-engine</artifactId>
            <version>6.0.0</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>1.1.11</version>
        </dependency>
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>23.0</version>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <version>1.3.176</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <!--引入dbcp依赖包-->
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

二配置文件

<?xml version="1.0" encoding="UTF-8"?>


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


   <!-- 使用DBCP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/act" />
      <property name="username" value="root" />
      <property name="password" value="123456" />
   </bean>


   <!-- 配置自定义属性 -->
   <bean id="processEngineConfiguration" class="com.syc.activiti.MyConfiguration">
      <property name="dataSource" ref="dataSource" />
      <property name="databaseSchemaUpdate" value="drop-create"></property>
      <property name="userName" value="crazyit"></property>
   </bean>
</beans>

三自定义ProcessEngineConfiguration

package com.syc.activiti;


import org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl;
import org.activiti.engine.impl.interceptor.CommandInterceptor;


public class MyConfiguration extends ProcessEngineConfigurationImpl {
   
   public MyConfiguration() {
      // 做自定义设置
   }


   @Override
   public CommandInterceptor createTransactionInterceptor() {
      return null;
   }


   //测试属性，需要在processEngineConfiguration注入
   private String userName;
   
   public void setUserName(String userName) {
      this.userName = userName;
   }
   public String getUserName() {
      return this.userName;
   }
}

四测试文件

package com.syc.activiti;

import org.activiti.engine.ProcessEngineConfiguration;

public class ConfigTest {


   public static void main(String[] args) {
      //创建ProcessEngineConfiguration，并强制转换为MyConfiguration
      MyConfiguration config = (MyConfiguration)ProcessEngineConfiguration.
            createProcessEngineConfigurationFromResource("my-config.xml");
      config.buildProcessEngine();
      //打印出结果为crazyit
      System.out.println(config.getUserName());
   }
}

五测试结果

crazyit

六数据库变化

只有act_ge_property数据表会产生数据。

mysql> select * from act_ge_property;
+--------------------------------------+-----------------+------+
| NAME_                                | VALUE_          | REV_ |
+--------------------------------------+-----------------+------+
| cfg.execution-related-entities-count | false           |    1 |
| next.dbid                            | 2501            |    2 |
| schema.history                       | create(6.0.0.4) |    1 |
| schema.version                       | 6.0.0.4         |    1 |
+--------------------------------------+-----------------+------+
4 rows in set (0.00 sec)