一个请假单流程的实现(struts2.1.8+spring2.5+hibernate3集成jbpm4.3)

14年前

转自：http://abstractforever.javaeye.com/blog/608189

先说明这个只是一个例子而已，简单的介绍了一些写法，你真的理解了以后完全可以写出比这个更好的代码来。

网上随便找了个请假的流程图，在此先谢谢提供图片的人：

使用jbpm工具画出流程图，中文好像是乱码，所以改为英文：

leave.jpdl.xml内容：

Xml代码

<?xml version="1.0" encoding="UTF-8"?>
<process name="leave" xmlns="http://jbpm.org/4.3/jpdl">
<start g="159,47,48,48" name="start1">
<transition to="exclusive1"/>
</start>
<decision expr="#{job}" g="161,152,48,48" name="exclusive1">
<transition g="42,179:43,-27" name="isChief" to="boosApprove"/>
<transition g="316,175:-83,-23" name="isnotChief" to="chiefApprove"/>
</decision>
<state g="-3,220,92,52" name="boosApprove">
<transition g="47,340:" to="sendEmail"/>
</state>
<state g="270,214,92,52" name="chiefApprove">
<transition to="exclusive2"/>
</state>
<decision expr="#{day}" g="160,219,48,48" name="exclusive2">
<transition g="-2,-20" name="gt10" to="boosApprove"/>
<transition g="186,323:12,-47" name="le10" to="sendEmail"/>
</decision>
<end g="171,410,48,48" name="end"/>
<state g="146,313,92,52" name="sendEmail">
<transition to="end"/>
</state>
</process>

分析之后，有如下一些表：

用户user_
角色role_(简化到user_)
请假单leave_
假设有这么几个用户：
陈均 --普通员工
唐平 --级别最高的，BOOS，老板
胡杰 --级别比较高的，chief主管
张小 --普通员工

用户测试数据：

Sql代码

INSERT INTO `user_` VALUES ('9', '陈均', '普通员工');
INSERT INTO `user_` VALUES ('10', '胡杰', '主管');
INSERT INTO `user_` VALUES ('11', '唐平', '老板');
INSERT INTO `user_` VALUES ('12', '张小', '普通员工');

现在集成jbpm4.3,hibernate3,spring2.5,struts2.1.8。

系统初步设计如图：

1.因为jbpm里面带有hibernate，所以创建web项目后，导入jbpm-4.3\lib下的所有包，导入jbpm-4.3\jbpm.jar,

把jbpm4.3\lib\下面得juel.jar，juel-engine.jar，juel-impl.jar放到tomcat的lib下面。导入spring2.5的jar，导入struts2.1.8所需jar包。以下jar包不是最简，有些不是必须的。

spring2.5所需jar包清单：

aspectjrt.jar

aspectjweaver.jar

cglib-nodep-2.1_3.jar

common-annotations.jar

commons-logging.jar

log4j-1.2.15.jar

spring.jar

spring-webmvc-struts.jar

------------------------------------

struts2.1.8所需jar包清单：

commons-fileupload-1.2.1.jar

commons-io-1.3.2.jar

freemarker-2.3.15.jar

ognl-2.7.3.jar

struts2-core-2.1.8.1.jar

struts2-dojo-plugin-2.1.8.1.jar

struts2-spring-plugin-2.1.8.1.jar

xwork-core-2.1.6.jar

-----------------------------------

数据库和数据源所需jar包：

c3p0-0.9.1.2.jar

mysql-connector-java-5.1.7-bin.jar

找到jbpm-4.3\install\src\cfg\jbpm\下的spring.jbpm.cfg.xml文件，放入项目的src处，改名为jbpm.cfg.xml.

在项目src下面创建applicationContext.xml配置文件，内容如下：

Xml代码

<?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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<context:annotation-config />
<context:component-scan base-package="org.forever.leave" />
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass">
<value>com.mysql.jdbc.Driver</value>
</property>
<property name="jdbcUrl">
<value>jdbc:mysql://localhost:3306/jbpmdb</value>
</property>
<property name="user">
<value>root</value>
</property>
<property name="password">
<value>root</value>
</property>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="hibernateProperties" ref="hibernateProperties" />
<property name="mappingLocations">
<list>
<value>classpath*:org/forever/leave/entities/*.hbm.xml</value>
<value>classpath:jbpm.repository.hbm.xml</value>
<value>classpath:jbpm.execution.hbm.xml</value>
<value>classpath:jbpm.history.hbm.xml</value>
<value>classpath:jbpm.task.hbm.xml</value>
<value>classpath:jbpm.identity.hbm.xml</value>
</list>
</property>
</bean>
<bean name="hibernateProperties"
class="org.springframework.beans.factory.config.PropertiesFactoryBean">
<property name="properties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
<bean id="springHelper" class="org.jbpm.pvm.internal.processengine.SpringHelper" />
<bean id="processEngine" factory-bean="springHelper"
factory-method="createProcessEngine" />
<bean id="jbpmTemplate" class="org.forever.leave.jbpm.JbpmTemplate">
<property name="processEngine" ref="processEngine"></property>
</bean>
<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<aop:config>
<aop:pointcut expression="execution(* org.forever.leave.biz..*.*(..))"
id="transactionPointcut" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="transactionPointcut" />
</aop:config>
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="get*" read-only="true" propagation="NOT_SUPPORTED" />
<tx:method name="find*" read-only="true" propagation="NOT_SUPPORTED" />
<tx:method name="*" propagation="REQUIRED" />
</tx:attributes>
</tx:advice>
</beans>

添加 log4j.properties文件；

模板类JbpmTemplate:

Java代码

package org.forever.leave.jbpm;
import java.util.List;
import java.util.Map;
import org.jbpm.api.Execution;
import org.jbpm.api.ExecutionService;
import org.jbpm.api.HistoryService;
import org.jbpm.api.ManagementService;
import org.jbpm.api.ProcessEngine;
import org.jbpm.api.ProcessInstance;
import org.jbpm.api.RepositoryService;
import org.jbpm.api.TaskService;
import org.jbpm.api.task.Task;
/**
* jbpm模板类(初步实现)
*
* @author Administrator
*
*/
public class JbpmTemplate {
/**
* 部署流程到数据库
*
* @param resourceName
* 资源文件名字比如(org/forever/jbpm/jpdl/process.jpdl.xml)
* @return 返回流程定义id(格式：key-version)
*/
public String Deploy(String resourceName) {
return repositoryService.createDeployment().addResourceFromClasspath(
resourceName).deploy();
}
/**
* 创建一个新的流程实例
*
* @param processDefinitionKey
* (process.jpdl.xml中process标签的key)
* @param processInstanceKey
* (用户给的key，比如一个请假单的id)
* @return 流程实例
*/
public ProcessInstance addProcessInstance(String processDefinitionKey,
String processInstanceKey) {
return executionService.startProcessInstanceByKey(processDefinitionKey,
processInstanceKey);
}
/**
* 创建一个新的流程实例
* @param processDefinitionKey(process.jpdl.xml中process标签的key)
* @param variables 该流程实例要用到的变量
* @param processInstanceKey(用户给定的业务key)
* @return
*/
public ProcessInstance addProcessInstance(
String processDefinitionKey,
Map<String, ?> variables,
String processInstanceKey){
return executionService.startProcessInstanceByKey(processDefinitionKey, variables, processInstanceKey);
}
/**
* 提交任务
* @param taskId 任务id
*/
public void completeTask(String taskId){
taskService.completeTask(taskId);
}
/**
* 将任务流转到指定名字的流程中去
* @param taskId
* @param outcome
*/
public void completeTask(String taskId,String outcome){
taskService.completeTask(taskId, outcome);
}
/**
* 根据key获取流程实例(这里我使用的uuid)
*
* @param key
* (对应于数据库表jbpm4_execution中的KEY_字段)
* @return 返回查找到得流程实例，没有返回null
*/
public ProcessInstance getProcessInstance(String key) {
return executionService.createProcessInstanceQuery()
.processInstanceKey(key).uniqueResult();
}
/**
* 根据executionId获取指定的变量值
* @param executionId
* @param variableName
* @return
*/
public Object getVariableByexecutionId(String executionId,String variableName){
return executionService.getVariable(executionId, variableName);
}
/**
* 根据任务id获取指定变量值
* @param taskId
* @param variableName
* @return
*/
public Object getVariableByTaskId(String taskId,String variableName){
return taskService.getVariable(taskId, variableName);
}
/**
* 获取指定用户名字的任务
* @param userId
* @return
*/
public List<Task> findPersonalTasks(String userId){
return taskService.findPersonalTasks(userId);
}
/**
* 根据任务id获取任务
* @param taskId
* @return
*/
public Task getTask(String taskId) {
return taskService.getTask(taskId);
}
/**
* 根据流程实例id获取
* @param executionId
* @return
*/
public Execution findExecutionById(String executionId) {
return executionService.findExecutionById(executionId);
}
/**
* 彻底删除文件的部署
*
* @param deploymentId流程定义id
*/
public void deleteDeploymentCascade(String deploymentId) {
repositoryService.deleteDeploymentCascade(deploymentId);
}
public JbpmTemplate() {
}
public JbpmTemplate(ProcessEngine processEngine) {
this.processEngine = processEngine;
repositoryService = processEngine.getRepositoryService();
executionService = processEngine.getExecutionService();
taskService = processEngine.getTaskService();
historyService = processEngine.getHistoryService();
managementService = processEngine.getManagementService();
}
private ProcessEngine processEngine;
private RepositoryService repositoryService = null;
private ExecutionService executionService = null;
private TaskService taskService = null;
private HistoryService historyService = null;
private ManagementService managementService = null;
public ProcessEngine getProcessEngine() {
return processEngine;
}
public void setProcessEngine(ProcessEngine processEngine) {
this.processEngine = processEngine;
System.out.println(processEngine);
repositoryService = processEngine.getRepositoryService();
executionService = processEngine.getExecutionService();
taskService = processEngine.getTaskService();
historyService = processEngine.getHistoryService();
managementService = processEngine.getManagementService();
}
//省略get和set方法
}

创建测试类Test：

Java代码

import java.util.UUID;
import org.forever.leave.jbpm.JbpmTemplate;
import org.jbpm.api.ProcessInstance;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Test {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext(
"applicationContext.xml");
JbpmTemplate jbpmTemplate = (JbpmTemplate) context
.getBean("jbpmTemplate");
System.out.println(jbpmTemplate);
jbpmTemplate.Deploy("org/forever/leave/jbpm/jpdl/leave.jpdl.xml");
UUID uuid = UUID.randomUUID();
}
}

控制台输出没有报错说明jbpm和spring初步集成成功；

访问http://localhost:8080/leave/user/queryList.action获取到用户列表信息，说明集成成功。

项目中需要修改mysql方言为org.hibernate.dialect.MySQLInnoDBDialect，事务service改为biz，刚发现的，呵呵

下一步进行业务的实现。

未完

因为朋友需要，所以对其进行了简单的实现：

在实现中发现集成的时候，如果你用mysql数据库，请设置你的方言为：org.hibernate.dialect.MySQLInnoDBDialect

先看一哈这个实现了简单业务的一个图，在此用的中文，也是网上找的，呵呵，我都变懒了哈：

对应xml文件：

Xml代码

<?xml version="1.0" encoding="UTF-8"?>
<process key="leave" name="leave" xmlns="http://jbpm.org/4.3/jpdl">
<start g="201,14,48,48" name="开始">
<transition g="-42,-10" name="请假" to="填写请假单"/>
</start>
<task assignee="writerForm" g="178,87,92,52" name="填写请假单">
<transition g="-97,2" name="判断是不是经理" to="是不是经理"/>
</task>
<decision expr="#{manager}" g="204,158,48,48" name="是不是经理">
<transition g="-23,-11" name="否" to="经理审核"/>
<transition g="14,-11" name="是" to="老板审批"/>
</decision>
<task assignee="#{username}" g="103,252,92,52" name="经理审核">
<transition g="150,450:10,-21" name="经理批准" to="结束"/>
<transition g="-22,-22" name="请假天数>5" to="老板审批"/>
<transition g="-61,-1" name="经理不批准" to="终止"/>
<transition g="149,114:-55,82" name="经理驳回" to="填写请假单"/>
</task>
<task assignee="张杰" g="278,251,92,52" name="老板审批">
<transition g="326,450:-58,-24" name="老板批准" to="结束"/>
<transition g="7,0" name="老板不批准" to="终止"/>
<transition g="323,114:13,61" name="老板驳回" to="填写请假单"/>
</task>
<end g="219,429,48,48" name="结束" state="confirm"/>
<end g="220,360,48,48" name="终止" state="dissent"/>
</process>

写了个经理审批的测试类过程：

Java代码

package org.forever.leave.biz.test;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import org.forever.leave.entities.Leave;
import org.forever.leave.entities.User;
import org.jbpm.api.ProcessInstance;
import org.jbpm.api.task.Task;
import org.junit.Test;
//请假测试
//运行顺序
//testDeploy()
//testCresteLeave()
//testStart()
//testGetTask()
//testGetLeave()
public class LeaveTest extends BaseTest{
//部署流程
@Test
public void testDeploy(){
String resourceName ="org/forever/leave/jbpm/jpdl/leave.jpdl.xml";
jbpmTemplate.Deploy(resourceName);
}
//新建请假单
@Test
public void testCresteLeave(){
//现假设用户陈均登陆了系统，然后进行请假
String loginName = "cj";//登陆者
String password = "cj";//登陆密码
User user = userDao.get(loginName,password);
//status=新建，就是未提交的
UUID uuid = UUID.randomUUID();
Leave leave = new Leave(user, 3,new Date(),"新建", "生病了");
leave.setLeaveId(uuid.toString());
//保存到数据库
leaveDao.save(leave);
}
// 启动流程实例,提交请假申请
//注意（如果要对该测试类成功测试，首先确保存在juel-engine.jar，juel-impl.jar，juel.jar）
//部署到tomcat里面的时候就把juel.jar，juel-engine.jar，juel-impl.jar放到tomcat的lib下面
@Test
public void testStart() {
//进行业务流转所需的变量
String loginName = "cj";//登陆者
String password = "cj";//登陆密码
User user = userDao.get(loginName,password);
// 3.启动流程实例,绑定业务key,key最好是唯一的
List<?> list = leaveDao.findByUserLeave(user.getUserId());//该用户可能有多次请假的记录
//假设用户选择的是index=0的那个请假单
Leave leave = (Leave)list.get(0);
String position = user.getPosition();//用户的职位
Map<String, Object> variables = new HashMap<String, Object>();//流程中要用到的变量信息
variables.put("leaveId",leave.getLeaveId());//存放该实例的请假单
if("员工".equals(position)){//如果是员工请假
variables.put("manager", "否");
variables.put("username","胡杰");//指定一个经理进行审批
}else if("经理".equals(position)){//如果是经理请假
variables.put("manager", "是");
//只有一个boos，所以在xml中指定了，在此就不用指定了
}
//此时就获取到了该请假单的id
//通过该leaveId来绑定一个流程实例
ProcessInstance processInstance = jbpmTemplate.addProcessInstance("leave",variables, leave.getLeaveId());
//该表单到时候是在web页面进行申请时填写好的
System.out.println("请假单已填写：" + processInstance.isActive("填写请假单"));
String taskId = jbpmTemplate.findPersonalTasks("writerForm").get(0).getId();
//让任务向下流转,提交任务
jbpmTemplate.completeTask(taskId);
}
//获取任务集合
@Test
public void testGetTask(){
//经理登陆系统，获取审批任务
String username = "胡杰";
List<Leave> leaves = new ArrayList<Leave>();//该经理可能对多个请假单审批，该集合提供给页面使用的
List<Task> list = jbpmTemplate.findPersonalTasks(username);
if(list.size()==0){
System.out.println(username + "没有任务.........");
}
else{
for (Task task : list) {
System.out.println("任务名字：" + task.getName());
System.out.println("任务参与者：" + task.getAssignee());
String taskId = task.getId();
String leaveId = (String) jbpmTemplate.getVariableByTaskId(taskId, "leaveId");
Leave leave = leaveDao.findbyIdLeave(leaveId);
leave.setTaskId(taskId);
leaves.add(leave);
}
}
//页面显示,并全部通过审批
for (Leave leave : leaves) {
System.out.println(leave);
//批准流程
ProcessInstance processInstance = jbpmTemplate.getProcessInstance(leave.getLeaveId());
String taskId = leave.getTaskId();
int day = leave.getDay();//请假天数
if(day>5 && true){//如果大于5天，并且经理批准，也要提交给boos审核
jbpmTemplate.completeTask(taskId, "请假天数>5");
}else{//直接通过,既让任务流转到结束
jbpmTemplate.completeTask(taskId,"经理批准");
}
System.out.println("审批结果：" + processInstance.getState());
leave.setStatus("通过");
leaveDao.update(leave);//更新结果
}
}
//获取指定用户的请假单集合
@Test
public void testGetLeave(){
//进行业务流转所需的变量
String loginName = "cj";//登陆者
String password = "cj";//登陆密码
User user = userDao.get(loginName,password);
//页面显示用
List<?> list = leaveDao.findByUserLeave(user.getUserId());
for (Object object : list) {
System.out.println(object);
//是否已经申请
//已经提交的请假单不能进行删除操作(所以慎重，呵呵)
//新建状态的请假单可以进行删除操作
}
}
}