Jbpm 4.1与Spring集成 - 编程入门网

Jbpm 4.1与Spring集成

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

凌众科技专业提供服务器租用、服务器托管、企业邮局、虚拟主机等服务，公司网站：http://www.lingzhong.cn 为了给广大客户了解更多的技术信息，本技术文章收集来源于网络,凌众科技尊重文章作者的版权，如果有涉及你的版权有必要删除你的文章，请和我们联系。以上信息与文章正文是不可分割的一部分,如果您要转载本文章,请保留以上信息，谢谢!