jbpm与spring整合.docxVIP

jBPM4.4：配置（包括和Spring的整合，和Hibernate配置）jBPM4.4，获取ProcessEngine是通过Configuration.getProcessEngine()中获取的。?Configuration.getProcessEngine()的代码如下：?Java代码??public?static?ProcessEngine?getProcessEngine()?{ ????if?(singleton?==?null)?{ ??????synchronized?(Configuration.class)?{ ????????if?(singleton?==?null)?{ ??????????singleton?=?new?Configuration().setResource(jbpm.cfg.xml).buildProcessEngine(); ????????} ??????} ????} ????return?Configuration.singleton; ??}?? public static ProcessEngine getProcessEngine() { if (singleton == null) { synchronized (Configuration.class) { if (singleton == null) { singleton = new Configuration().setResource(jbpm.cfg.xml).buildProcessEngine(); } } } return Configuration.singleton; }??（虽然这一段代码可能会有“双重检查锁定”失败的问题，但是不影响到分析jBPM的配置 -- 详见IBM04年的文章：双重检查锁定及单例模式）?系统缺省的加载jbpm.cfg.xml，作为主配置文件。?在jBPM4.4的install/src/cfg中，带了几套配置文件的样板。在cfg中：有几个目录：hibernate：采用hibernate时候的配置（其中还分为好几种方式的数据源方式：datasource/jdbc/spring/tomcat）jbpm ? ? ?：主配置文件的样板（分为：采用jta/spring/standalone--这种方式直接配置hibernate）logging ? : logging的几种配置法mail ? ? ? : 邮件的配置样板spring ? ?: 如果使用到spring的时候，applicationcontext.xml的样板?在jbpm目录中，拿一个样板来讲：spring.jbpm.cfg.xml?Xml代码?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.bpmn.cfg.xml?/????import?resource=jbpm.identity.cfg.xml?/????import?resource=jbpm.businesscalendar.cfg.xml?/????import?resource=jbpm.console.cfg.xml?/????import?resource=jbpm.jobexecutor.cfg.xml?/???? ????process-engine-context??????string?name=spring.cfg?value=applicationContext.xml?/????/process-engine-context????/jbpm-configuration???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.bpmn.cfg.xml / import resource=jbpm.identity.cfg.xml / import resource=jbpm.businesscalendar.cfg.xml / import resource=jbpm