Activiti集成Spring配置

Activiti

1、新建Maven-Web工程

pom.xml文件参考如下：

<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>
  <groupId>activitiSpring</groupId>
  <artifactId>activitiSpring</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>
  <name>activitiSpring</name>
  <url>http://maven.apache.org</url>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  <dependencies>
    <dependency>  
        <groupId>org.activiti</groupId>  
        <artifactId>activiti-engine</artifactId>  
        <version>5.15.1</version>  
    </dependency>  
    <!-- activiti 与 Spring 集成 -->  
    <dependency>  
        <groupId>org.activiti</groupId>  
        <artifactId>activiti-spring</artifactId>  
        <version>5.15.1</version>  
    </dependency>  
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.8.1</version>
    </dependency>
    <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.38</version>
    </dependency>
  </dependencies>
</project>

2、新建Activiti配置文件spring-context-activiti.xml

将此配置文件放置在资源根目录下，文件内容参考如下：

<?xml version="1.0" encoding="UTF-8"?>  
<beans xmlns="http://www.springframework.org/schema/beans"   
       xmlns:context="http://www.springframework.org/schema/context"  
       xmlns:tx="http://www.springframework.org/schema/tx"  
       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  
                           http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd  
                           http://www.springframework.org/schema/tx      http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">  
  <bean id="dataSource" class="org.springframework.jdbc.datasource.SimpleDriverDataSource">  
    <property name="driverClass" value="com.mysql.jdbc.Driver" />  
    <property name="url" value="jdbc:mysql://127.0.0.1:3306/test" />  
    <property name="username" value="root" />  
    <property name="password" value="root" />  
  </bean>  
  <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  
    <property name="dataSource" ref="dataSource" />  
  </bean>  
 <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">  
    <property name="dataSource" ref="dataSource" />  
    <property name="transactionManager" ref="transactionManager" />  
    <property name="databaseSchemaUpdate" value="true" />  
    <property name="mailServerHost" value="localhost" />  
    <property name="mailServerPort" value="5025" />  
    <property name="jpaHandleTransaction" value="true" />  
    <property name="jpaCloseEntityManager" value="true" />  
    <property name="jobExecutorActivate" value="false" />  
  </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="managementService" factory-bean="processEngine" factory-method="getManagementService" />  
</beans>  

3、编写测试类模拟Srping环境

package test;
import java.util.List;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.repository.ProcessDefinition;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;
public class ActivitiSpringTest {  
    @Test
    public void test(){
        ApplicationContext ac = new FileSystemXmlApplicationContext("classpath*:spring-context-activiti.xml");
        ProcessEngine processEngine=(ProcessEngine)ac.getBean("processEngine");
        List<ProcessDefinition> list = processEngine.getRepositoryService()
                .createProcessDefinitionQuery()
                .list();
        if(list!=null && list.size()>0){
            for(ProcessDefinition pd:list){
                System.out.println("流程定义的名称:"+pd.getName());
            }
        }
    }
}

如能正常获取对象并输出结果，则说明环境配置正确。

4、项目集成

前面三步完成之后，需要将spring-context-activiti.xml文件在项目中进行配置和引入，在web.xml中进行如下配置：

<context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath*:/spring-context-activiti.xml.xml</param-value>
</context-param>

此步骤依赖于项目已经有了Spring环境，将Activiti各核心对象交由Spring进行管理，上述配置完成后，即可在 Spring配置的Controller或Service中使用 @Autowired 注解注入Activiti对象。
如下：

@Autowired
private ProcessEngineFactoryBean processEngine;