（1）发布流程：
1:启动JBPM引擎 ProcessEngine
ProcessEngine processEngine;
processEngine = Configuration.getProcessEngine();
2:发布流程
RepositoryService respositoryService =
processEngine.getRepositoryService();
respositoryService.createDeployment().addResourceFromClasspath
("helloworld.jpdl.xml").deploy();//创建流程发布包，并发布
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（2）查看流程定义
List<ProcessDefinition> list =
respositoryService.createProcessDefinitionQuery.list();
for( ProcessDefinition pd : list){
Systme.out.println(pd.getId);
}
-------------------------------------
（3）删除流程定义
String processDefinitionId = responsitoryService.createDeployment
().addResourceFromClasspath("helloworld.jpdl.xml");
responsitoryService.deleteDeploymentCascade(processDefinitionId);
//级联删除流程定义下的所以流程定义及流程定义的实例
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（4）获得流程实例
ExecutionService executeService = processEngine.getExcuteServie();
//ExcecutionService是用来专门控制流程实例的
ProcessInstance pi = executionService.startProcessInstanceByKey
("helloworld");
pi= executionService.signalExecutionById(pi.getId());
//执行到等待状态后，继续执行
System.out.println(pi.isEnded());
（5）终结流程
pi = exectionService.endProcessInstance(pi.getId(),"cancel");
（6）删除流程
pi = exectionService.deleteProcessInstanceCascade(pi.getId());
（7）查看流程实例
List<ProcessInstance> list =
executionService.createProcessInstanceQuery().list();
