Activiti流程引擎配置实战

谁借莪１个温暖的怀抱￠ 2021-07-24 21:39 481阅读 1赞

**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>
            
            <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">
    
    
       
       <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>
    
    
       
       <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)