jbpm开发(2)(转贴)

1           概述

本文主要介绍如何将JBPM+Struts+Spring+Hibernate整合在一块。并通过一个简单实例来说明。此实例为一个申请审批的简单流程，并将申请人和审批人记录到数据库中，流程为start----申请----审批----end，中间无退回，无分支，只是看一下jbpm的流程设计，本文将jbpm和struts/spring/hibernate结合在一块做为一个完整的项目来叙述。

通过processdefinition.xml的可视图，可了解一下流程图：

2         环境 

tomcat6.0+jdk1.5+eclips3.2

jbpm3.1.4

spring2.0

hibernate3

数据库：postgreSql8.1

jbpm提供了在eclipse下的一个可视化插件，通过它我们可以方便的定义工作流,介绍一下eclipse如何添加该插件？

打开jbpm-starters-kit-3.1.4\jbpm-designer\jbpm-gpd-feature目录，我们可以看到下面有一个eclipse文件夹，这里我们通过link的方式为eclipse添加该插件。

在{eclipse_home}/link文件夹下新建jbpm-designer.link文件，用记事本打开该文件加入如下一行：

path=D:\\jbpm-starters-kit-3.1.4\\jbpm-designer\\jbpm-gpd-feature

后面的路径即为该插件的存放路径，根据个人情况修改。注意，这里的分隔符使用双斜杠\\或者用单斜杠/。

3         项目总体结构

src部分

WebRoot部分：

 

4         要引入的jar包

很多jar包是从jbpm-starters-kit-3.1.4\jbpm-starters-kit-3.1.4\jbpm\build

和jbpm-starters-kit-3.1.4\jbpm-starters-kit-3.1.4\jbpm\lib中得到的

其中spring-modules-jbpm31.jar、postgresql-8.1-405.jdbc2.jar要下载

以下是myeclips需要引入的包

5         web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

    <context-param>

  <param-name>webAppRootKey</param-name>

  <param-value>/jbpm/</param-value>

 </context-param>

 <context-param>

    <param-name>contextConfigLocation</param-name>

    <param-value>/WEB-INF/classes/applicationContext.xml</param-value>

 </context-param>

 <context-param>

    <param-name>log4jConfigLocation</param-name>

    <param-value>/WEB-INF/classes/log4j.properties</param-value>

 </context-param>

 <context-param>

    <param-name>log4jRefreshInterval</param-name>

    <param-value>60000</param-value>

 </context-param>

 <filter>

    <filter-name>Set Character Encoding</filter-name>

    <filter-class>com.binghe.pub.SetCharacterEncodingFilter</filter-class>

    <init-param>

           <param-name>encoding</param-name>

           <param-value>GBK</param-value>

       </init-param>

 </filter>

    <filter-mapping>

       <filter-name>Set Character Encoding</filter-name>

       <url-pattern>/*</url-pattern>

    </filter-mapping>

 <listener>

    <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>

 </listener>

 <servlet>

    <servlet-name>action</servlet-name>

    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>

    <init-param>

      <param-name>config</param-name>

      <param-value>/WEB-INF/struts-config.xml</param-value>

    </init-param>

    <init-param>

      <param-name>debug</param-name>

      <param-value>3</param-value>

    </init-param>

    <init-param>

      <param-name>detail</param-name>

      <param-value>3</param-value>

    </init-param>

    <load-on-startup>0</load-on-startup>

 </servlet>

 <servlet>

    <servlet-name>imageServlet</servlet-name>

    <servlet-class>com.binghe.pub.ImageServlet</servlet-class>

 </servlet>

 

 

 <servlet-mapping>

    <servlet-name>action</servlet-name>

    <url-pattern>*.do</url-pattern>

 </servlet-mapping>

 <servlet-mapping>

    <servlet-name>imageServlet</servlet-name>

    <url-pattern>/servlet/imageServlet</url-pattern>

 </servlet-mapping>

    <welcome-file-list>

    <welcome-file>/apply.jsp</welcome-file>

 </welcome-file-list>

</web-app>

 

6         applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">

 

<beans>

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">

<property name="driverClassName">

<value>org.postgresql.Driver</value>

</property>

<property name="url">

<value>jdbc:postgresql://localhost:5432/jbpmtest</value>

</property>

<property name="username">

<value>admin</value>

</property>

<property name="password">

<value>admin</value>

</property>

</bean>

 

    <bean id="sessionFactory"

       class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

       <property name="dataSource">

           <ref bean="dataSource" />

       </property>

       <property name="mappingLocations">

           <value>classpath*:/org/jbpm/**/*.hbm.xml</value>

       </property>

 

       <property name="hibernateProperties">

           <props>

              <prop key="hibernate.dialect">

                  org.hibernate.dialect.PostgreSQLDialect

              </prop>

              <prop key="jdbc.fetch_size">50</prop>

              <prop key="jdbc.batch_size">30</prop>

              <prop key="hibernate.show_sql">true</prop>

              <prop key="hibernate.use_outer_join">true</prop>

              <prop key="hibernate.cglib.use_reflection_optimizer">

                  true

              </prop>

 

           </props>

       </property>

 

    </bean>

    <!-- Transaction Manager -->

    <bean id="transactionManager"

       class="org.springframework.orm.hibernate3.HibernateTransactionManager">

       <property name="sessionFactory">

           <ref local="sessionFactory" />

       </property>

    </bean>

    <!-- Transaction Interceptor -->

    <bean id="transactionInterceptor"

       class="org.springframework.transaction.interceptor.TransactionInterceptor"

       dependency-check="none">

       <property name="transactionManager">

           <ref bean="transactionManager" />

       </property>

       <property name="transactionAttributes">

           <props>

              <prop key="save*">PROPAGATION_REQUIRED</prop>

              <prop key="update*">PROPAGATION_REQUIRED</prop>

              <prop key="attachDirty*">PROPAGATION_REQUIRED</prop>

              <prop key="delete*">PROPAGATION_REQUIRED</prop>

              <!-- default, readOnly -->

              <prop key="*">PROPAGATION_REQUIRED,readOnly</prop>

           </props>

       </property>

    </bean>

 

 

 

 

 

 

    <!-- reading jBPM process definitions -->

    <bean id="websaleWorkflow1"

       class="org.springmodules.workflow.jbpm31.definition.ProcessDefinitionFactoryBean">

       <property name="definitionLocation"

           value="classpath:/com/jpdl/simple/processdefinition.xml" />

    </bean>

    <!-- jBPM configuration-->

    <bean id="jbpmConfiguration"

       class="org.springmodules.workflow.jbpm31.LocalJbpmConfigurationFactoryBean">

       <property name="sessionFactory" ref="sessionFactory" />

       <property name="configuration" value="classpath:/jbpm.cfg.xml" />

       <property name="processDefinitions">

           <list