jBPM与Spring整合浅析

longgangbai

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项目中一点总结

JBPM Spring Eclipse Workflow Myeclipse

1、创建公文流转相关的实体类，并创建数据库表

2、根据对用例的分析，初步建立公文流转相关的接口

3、实现接口

- 集成JBPM到OA系统（第一步：创建数据库表）

◆拷贝相关的依赖包到WEB-INF/lib下面(bsh.jar/ jcr-1.0.jar/ jbpm-identity.jar/ jbpm-jpdl.jar)

◆修改hibernate.cfg.xml，添加JBPM的映射配置，以及缓存属性的配置

◆因为JBPM中的User对象与OA系统中的User对象名称上有冲突，所以需要，修改OA系统中User映射的auto-import属性为"false"。（参考User.hbm.xml）

◆当修改了User映射的auto-import="false"之后，需要在查询User对象的时候，使用其全路径类名（请参考UserManagerImpl.java）

◆启动Tomcat，应能正确创建JBPM的所有数据库表

- 集成JBPM到OA系统（第二步：与Spring集成）

◆JBPM与Spring整合，需要用到第三方的集成包：spring-modules-0.8.zip

◆将其中的spring-modules-jbpm31.jar拷贝到WEB-INF/lib下面即可

◆JBPM与Spring整合的方法是：将JbpmConfiguration对象的创建交给Spring来完成

◆所以，JBPM与Spring整合需要在spring配置文件中配置JbpmConfiguration对象的创建

配置JbmpConfiguration


<bean id="jbpmConfiguration" class="org.springmodules.workflow.jbpm31.LocalJbpmConfigurationFactoryBean"> 

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

property> 
bean>

◆这时候，需要jbpm.cfg.xml，这是JBPM的配置文件，我们可以从：JBPM_HOME\src\jpdl\org\jbpm目录下拷贝default.jbpm.cfg.xml文件，并重新命名为jbpm.cfg.xml

- 集成JBPM到OA系统（第三步：如何实现业务逻辑类，请参考WorkflowManagerImpl.java）

◆用到jbpmConfiguration对象的时候，需要注入

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

◆当我们使用JbpmContext对象来操纵JBPM的时候，需要将JbpmContext的HibernateSession对象设置为当前的HibernateSession对象


private JbpmContext getContext(){  
     JbpmContext context = jbpmConfiguration.createJbpmContext();  
     context.setSession(getSession());  

     return context;  

}

流程的定义

流程的定义建议使用jBPM提供的eclipse下的插件，图形化配置插件安装文件可以到jbpm-starters-kit-3.1.4\jbpm-designer\jbpm-gpd-feature\eclipse下找到，需注意版本。使用这种方式可以把定义的流程描述的三个文件压缩成zip包，统一的部署到数据库中，方便b/s系统中显示图片当前节点信息。

1插件安装

把jbpm-gpd-feature文件夹复制到C:\Program Files\MyEclipse-6.0M1\eclipse\plugins下，注意自己的ecplise路径。

在C:\Program Files\MyEclipse-6.0M1\eclipse\links文件夹下建立jbpm-gpd.link文件。内容如下：path=C:\\Program Files\\MyEclipse-6.0M1\\eclipse\\plugins\\jbpm-gpd-feature。

这样再重新启动eclipse就可以使用流程定义功能了。

2流程的定义

在Eclipse环境中选择file->new->other下的jboss jbpm->process definition流程定义。要在自己的项目文件中先指定文件要创建的文件夹。

这样会产生三个文件：gpd.xml、processdefinition.xml、processimage.jpg。

processimage.jpg文件是定义流程产生的图片、gpd.xml文件是图形文件的座标说明。用于在b/s下显示流程流转的图片位置。

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Java ClassLoader机制 | JVM垃圾回收机制总结(3) ：按代垃圾收集器

2009-08-22 12:41
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2 楼 longgangbai 2009-12-27

289056879 写道

你好，我现在在做尚学堂的oa系统，查找问题的答案是看到了你的版面，希望请教你个问题，我刚好做到你所说的这里，可是我到页面上传文件不能成功，提示sqlException
我是按照视频写的，我上传文件一点提交debug里就出现
     Daemon Thread [http-8080-1] (Suspended (exception SQLException))
ServerPreparedStatement(PreparedStatement).executeUpdate(byte[][], InputStream[], boolean[], int[], boolean[], boolean) line: 1302
ServerPreparedStatement(PreparedStatement).executeUpdate(boolean) line: 1274
ServerPreparedStatement(PreparedStatement).executeUpdate() line: 1259
IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(PreparedStatement) line: 73
IdentityGenerator$GetGeneratedKeysDelegate(AbstractReturningDelegate).performInsert(String, SessionImplementor, Binder) line: 33
SingleTableEntityPersister(AbstractEntityPersister).insert(Object[], boolean[], String, Object, SessionImplementor) line: 2158
SingleTableEntityPersister(AbstractEntityPersister).insert(Object[], Object, SessionImplementor) line: 2638
EntityIdentityInsertAction.execute() line: 48
ActionQueue.execute(Executable) line: 250
DefaultSaveEventListener(AbstractSaveEventListener).performSaveOrReplicate(Object, EntityKey, EntityPersister, boolean, Object, EventSource, boolean) line: 298
DefaultSaveEventListener(AbstractSaveEventListener).performSave(Object, Serializable, EntityPersister, boolean, Object, EventSource, boolean) line: 181
DefaultSaveEventListener(AbstractSaveEventListener).saveWithGeneratedId(Object, String, Object, EventSource, boolean) line: 107
DefaultSaveEventListener(DefaultSaveOrUpdateEventListener).saveWithGeneratedOrRequestedId(SaveOrUpdateEvent) line: 187
DefaultSaveEventListener.saveWithGeneratedOrRequestedId(SaveOrUpdateEvent) line: 33
DefaultSaveEventListener(DefaultSaveOrUpdateEventListener).entityIsTransient(SaveOrUpdateEvent) line: 172
DefaultSaveEventListener.performSaveOrUpdate(SaveOrUpdateEvent) line: 27
DefaultSaveEventListener(DefaultSaveOrUpdateEventListener).onSaveOrUpdate(SaveOrUpdateEvent) line: 70
SessionImpl.fireSave(SaveOrUpdateEvent) line: 535
SessionImpl.save(String, Object) line: 523
SessionImpl.save(Object) line: 519
GraphSession.deployProcessDefinition(ProcessDefinition) line: 77
JbpmContext.deployProcessDefinition(ProcessDefinition) line: 173
WorkflowManagerImpl.deployProcessDefinition(byte[], byte[]) line: 61
NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
Method.invoke(Object, Object...) line: 597
AopUtils.invokeJoinpointUsingReflection(Object, Method, Object[]) line: 310
ReflectiveMethodInvocation.invokeJoinpoint() line: 182
ReflectiveMethodInvocation.proceed() line: 149
TransactionInterceptor.invoke(MethodInvocation) line: 106
ReflectiveMethodInvocation.proceed() line: 171
ExposeInvocationInterceptor.invoke(MethodInvocation) line: 89
ReflectiveMethodInvocation.proceed() line: 171
JdkDynamicAopProxy.invoke(Object, Method, Object[]) line: 204
$Proxy8.deployProcessDefinition(byte[], byte[]) line: not available
WorkflowAction.add(ActionMapping, ActionForm, HttpServletRequest, HttpServletResponse) line: 48
NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
Method.invoke(Object, Object...) line: 597
WorkflowAction(DispatchAction).dispatchMethod(ActionMapping, ActionForm, HttpServletRequest, HttpServletResponse, String) line: 270
WorkflowAction(DispatchAction).execute(ActionMapping, ActionForm, HttpServletRequest, HttpServletResponse) line: 187
DelegatingActionProxy.execute(ActionMapping, ActionForm, HttpServletRequest, HttpServletResponse) line: 110
RequestProcessor.processActionPerform(HttpServletRequest, HttpServletResponse, Action, ActionForm, ActionMapping) line: 431
RequestProcessor.process(HttpServletRequest, HttpServletResponse) line: 236
ActionServlet.process(HttpServletRequest, HttpServletResponse) line: 1196
ActionServlet.doPost(HttpServletRequest, HttpServletResponse) line: 432
ActionServlet(HttpServlet).service(HttpServletRequest, HttpServletResponse) line: 710
ActionServlet(HttpServlet).service(ServletRequest, ServletResponse) line: 803
ApplicationFilterChain.internalDoFilter(ServletRequest, ServletResponse) line: 290
ApplicationFilterChain.doFilter(ServletRequest, ServletResponse) line: 206
PagerFilter.doFilter(ServletRequest, ServletResponse, FilterChain) line: 29
ApplicationFilterChain.internalDoFilter(ServletRequest, ServletResponse) line: 235
ApplicationFilterChain.doFilter(ServletRequest, ServletResponse) line: 206
OpenSessionInViewFilter.doFilterInternal(HttpServletRequest, HttpServletResponse, FilterChain) line: 198
OpenSessionInViewFilter(OncePerRequestFilter).doFilter(ServletRequest, ServletResponse, FilterChain) line: 76
ApplicationFilterChain.internalDoFilter(ServletRequest, ServletResponse) line: 235
ApplicationFilterChain.doFilter(ServletRequest, ServletResponse) line: 206
CharacterEncodingFilter.doFilterInternal(HttpServletRequest, HttpServletResponse, FilterChain) line: 96
CharacterEncodingFilter(OncePerRequestFilter).doFilter(ServletRequest, ServletResponse, FilterChain) line: 76
ApplicationFilterChain.internalDoFilter(ServletRequest, ServletResponse) line: 235
ApplicationFilterChain.doFilter(ServletRequest, ServletResponse) line: 206
StandardWrapperValve.invoke(Request, Response) line: 228
StandardContextValve.invoke(Request, Response) line: 175
StandardHostValve.invoke(Request, Response) line: 128
ErrorReportValve.invoke(Request, Response) line: 104
StandardEngineValve.invoke(Request, Response) line: 109
CoyoteAdapter.service(Request, Response) line: 216
Http11AprProcessor.process(long) line: 866
Http11AprProtocol$Http11ConnectionHandler.process(long) line: 716
AprEndpoint$Worker.run() line: 1498
Thread.run() line: 619

这样的异常，我在action中获取了值，能够取到

        WorkflowActionForm waf = (WorkflowActionForm)form;

//判断上传文件是否为空，觉得是否抛出异常

         System.err.println("----------------"+waf.getProcessDefinition().getFileData());

//部署流程
workflowManager.deployProcessDefinition(
waf.getProcessDefinition().getFileData(),
waf.getProcessImage().getFileData() );

请教了

我们的项目中使用的工作流，处理各种有一定的顺序的业务逻辑，好像你采用的是WorkFlow吧，在Spring的WorkFlow中好像有关于文件上传的业务流程的Demo哦

1 楼 289056879 2009-12-25

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