流程图:
<activiti:taskListener event="create" expression="${test.t()}"></activiti:taskListener>
Test.class:
package com.ponshine.service;
import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.DelegateTask;
import org.activiti.engine.delegate.JavaDelegate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.ponshine.dao.ActivitiDao;
@Service
public class Test{
@Autowired
ActivitiDao activitiDao;
public void t(){
System.out.println("--------------------");
System.out.println(activitiDao.searchLastUserId("李四"));
}
public Test(){
System.out.println("hello");
}
}
activiti.cfg.xml:
<?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:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsdhttp://www.springframework.org/schema/jee
http://www.springframework.org/schema/jee/spring-jee-3.0.xsdhttp://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<bean id="processEngineConfiguration"
class="org.activiti.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration">
<property name="jdbcDriver" value="oracle.jdbc.driver.OracleDriver" />
<property name="jdbcUrl" value="***" />
<property name="jdbcUsername" value="activiti" />
<property name="jdbcPassword" value="***" />
<property name="databaseSchemaUpdate" value="true" />
<property name="beans">
<map>
<entry key="test" value-ref="test"></entry>
</map>
</property>
</bean>
<bean id="test" class="com.ponshine.service.Test" ></bean>
</beans>
结果:
System.out.println(activitiDao.searchLastUserId("李四"));
这一行会报空指针。
打印activitiDao为空