其中，总的请假次数的计算逻辑交给drools处理
新建maven项目，目录结构如下：
一：加入maven依赖：
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<activiti.version>5.17.0</activiti.version>
<drools.version>5.6.0.Final</drools.version>
</properties>
<dependencies>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-core</artifactId>
<version>${drools.version}</version>
</dependency>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-compiler</artifactId>
<version>${drools.version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-engine</artifactId>
<version>${activiti.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-bpmn-layout</artifactId>
<version>${activiti.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-spring</artifactId>
<version>${activiti.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.4-1201-jdbc41</version>
</dependency>
</dependencies>
spring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.springframework.jdbc.datasource.SimpleDriverDataSource"> <property name="driverClass" value="org.postgresql.Driver" /> <property name="url" value="jdbc:postgresql://127.0.0.1/activiti17" /> <property name="username" value="admin" /> <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="customPostDeployers"> <list> <bean class="org.activiti.engine.impl.rules.RulesDeployer" /> </list> </property> <!-- <property name="deploymentResources" value="classpath*:/bpmn/*.bpmn" /> --> </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>
<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI"
typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath"
targetNamespace="http://www.activiti.org/test">
<process id="leave" name="请假审批" isExecutable="true">
<startEvent id="startevent1" name="Start"></startEvent>
<endEvent id="endevent1" name="End"></endEvent>
<userTask id="usertask1" name="部门经理审批"></userTask>
<businessRuleTask id="businessruletask1" name="天数判断" activiti:ruleVariablesInput="${leave}" activiti:rules="leave1,leave2" activiti:resultVariable="reason"></businessRuleTask>
<serviceTask id="servicetask1" name="获取变量" activiti:class="com.lala.service.DroolsService"></serviceTask>
<userTask id="usertask2" name="HR审批"></userTask>
<sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
<sequenceFlow id="flow2" sourceRef="usertask1" targetRef="businessruletask1"></sequenceFlow>
<sequenceFlow id="flow3" sourceRef="businessruletask1" targetRef="servicetask1"></sequenceFlow>
<userTask id="usertask3" name="总经理审批"></userTask>
<sequenceFlow id="flow4" sourceRef="servicetask1" targetRef="usertask3">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${reason[0].total >= 10}]]></conditionExpression>
</sequenceFlow>
<sequenceFlow id="flow5" sourceRef="servicetask1" targetRef="usertask2">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${reason[0].total < 10}]]></conditionExpression>
</sequenceFlow>
<sequenceFlow id="flow6" sourceRef="usertask3" targetRef="usertask2"></sequenceFlow>
<sequenceFlow id="flow7" sourceRef="usertask2" targetRef="endevent1"></sequenceFlow>
</process>
</definitions>
流程图如下：
package com.product;
import com.lala.bean.Leave;
rule "leave1"
when
u : Leave(day < 3);
then
u.setTotal(u.getDay() + 2);
end
rule "leave2"
when
u : Leave(day >= 3);
then
u.setTotal(u.getDay() + 5);
endpackage com.lala.bean;
import java.io.Serializable;
public class Leave implements Serializable
{
private static final long serialVersionUID = 1L;
private String name;
private Integer day; //当前请假天数
private Integer total = 0; //总共请假天数
public Leave(String name, Integer day)
{
this.name = name;
this.day = day;
}
public Integer getDay()
{
return day;
}
public void setDay(Integer day)
{
this.day = day;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getTotal() {
return total;
}
public void setTotal(Integer total) {
this.total = total;
}
public String toString()
{
return "[name="+name+",day="+day+",total="+total+"]";
}
}
package com.lala.service;
import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.JavaDelegate;
public class DroolsService implements JavaDelegate
{
public void execute(DelegateExecution execution) throws Exception
{
System.out.println("++++++++++++++++++++++++++++++++++++++");
System.out.println(execution.getVariable("reason"));
System.out.println("++++++++++++++++++++++++++++++++++++++");
}
}package com.lala.spring;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.repository.DeploymentBuilder;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.lala.bean.Leave;
public class Main
{
static void run(ApplicationContext context) throws Exception
{
RepositoryService repositoryService = (RepositoryService)context.getBean("repositoryService");
/**
* 注意这里：必须要把drl文件一起deploy
*/
DeploymentBuilder deploy = repositoryService.createDeployment();
deploy.addClasspathResource("rule/product.drl");
deploy.addClasspathResource("bpmn/ppleave.bpmn");
deploy.deploy();
RuntimeService runtimeService = (RuntimeService)context.getBean("runtimeService");
ProcessInstance pi = runtimeService.startProcessInstanceByKey("leave");
TaskService taskService = (TaskService)context.getBean("taskService");
Map<String, Object> vars = new HashMap<String, Object>();
vars.put("leave", new Leave("白展堂", 12));
/**
* 当前任务
*/
List<Task> tasks = taskService.createTaskQuery().processInstanceId(pi.getId()).list();
for(Task task : tasks)
{
System.out.println(task.getId() + " , " + task.getName());
taskService.complete(task.getId(), vars);
}
/**
* 下一步任务
*/
tasks = taskService.createTaskQuery().processInstanceId(pi.getId()).list();
for(Task task : tasks)
{
System.out.println(task.getId() + " , " + task.getName());
}
}
public static void main( String[] args )throws Exception
{
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
run(context);
context.close();
}
}
请假天数小于3天时，输出结果：
5009 , 部门经理审批
++++++++++++++++++++++++++++++++++++++
[[name=白展堂,day=2,total=4]]
++++++++++++++++++++++++++++++++++++++
5019 , HR审批
否则，输出结果：
7509 , 部门经理审批
++++++++++++++++++++++++++++++++++++++
[[name=白展堂,day=22,total=27]]
++++++++++++++++++++++++++++++++++++++
7519 , 总经理审批
版权声明：本文为博主原创文章，未经博主允许不得转载。
Spring + Activiti + Drools整合的请假例子
原文地址：http://blog.csdn.net/mn960mn/article/details/47803297
