Jbpm 4.1 与Spring 集成

核心提示：Jbpm4.1特性：4.1与Tomcat集成的很好4.1提供基于Web的流程编辑功能在开发指南中有相关整合章节：16.2. ConfigurationReplace the standard-transaction-interceptor with the spring-transaction-interceptor.

Jbpm4.1特性：

4.1与Tomcat集成的很好

4.1提供基于Web的流程编辑功能

在开发指南中有相关整合章节：

16.2. Configuration

Replace the standard-transaction-interceptor with the spring-transaction-interceptor. The hibernate session needs the attribute current=”true”. Also, the <transaction/> must be removed from the transaction-context if you want the transactions to be handled by Spring only. This forces jBPM to search for the current session, which will be provided by Spring.

　<process-engine-context>
<command-service>
<spring-transaction-interceptor　/>
...
</command-service>
...
</process-engine-context>
<transaction-context>
...
<hibernate-session　current="true"/>
</transaction-context>

The Spring integration provides a special context, which is added to the set of context where the jBPM engine will look for beans. Using this SpringContext, it is now possible to retrieve beans from the Spring Application Context. For the Spring context to be known, a SpringConfiguration must be created. This class extends the JbpmConfiguration but will add itself as a context. The single constructor take the location of the jBPM configuration.

　<bean　id="jbpmConfiguration"　class="org.jbpm.pvm.internal.cfg.SpringConfiguration">
<constructor-arg　value="be/inze/spring/demo/jbpm.cfg.xml"　/>
</bean>

The jBPM services can also be defined in the Spring applicationContext, as following:

<bean　id="processEngine"　factory-bean="jbpmConfiguration"　factory-method="buildProcessEngine"　/>
<bean　id="repositoryService"　factory-bean="processEngine"　factory-method="getRepositoryService"　/>
<bean　id="executionService"　factory-bean="processEngine"　factory-method="getExecutionService"　/>

16.3. Usage

The previous section already showed how the jBPM services can be made accessible for other Spring services. The other use case is calling Spring beans from within a process. This can be done by using an expression which resolves to the name of a Spring bean.

<java　name="echo"　expr="#{echoService}"　method="sayHello"　>
<transition　name="to　accept"　to="join1"/>
</java>

The scripting engine will look into all contexts from the bean named echoService. If you configured the ScriptManager as above, Spring will be the last context to search for. You can also add a Spring bean to the Spring Application context (eg IdentitySessionImpl with id identitySession) and use it in the jBPM config (eg by adding <env class="identitySession" />)

整合过程与 4 基本相同。

jbpm.cfg.xml

<?xml　version="1.0"　encoding="UTF-8"?>
<jbpm-configuration>
　　<import　resource="jbpm.default.cfg.xml"　/>
　　<import　resource="jbpm.tx.spring.cfg.xml"　/>
　　<import　resource="jbpm.jpdl.cfg.xml"　/>
　　<import　resource="jbpm.identity.cfg.xml"　/>
　　<import　resource="jbpm.businesscalendar.cfg.xml"　/>
　　<!--　Job　executor　is　excluded　for　running　the　example　test　cases.　-->
　　<!--　To　enable　timers　and　messages　in　production　use,　this　should　be　included.　-->
　　<!--
　　<import　resource="jbpm.jobexecutor.cfg.xml"　/>
　　-->
　　<import　resource="jbpm.jobexecutor.cfg.xml"　/>
　　<import　resource="jbpm/jbpm.mail.templates.examples.xml"　/>
　　
</jbpm-configuration>

工作日历从 default中分离

整合XML在原生的jbpm.tx.spring.cfg.xml 中