@Override
	protected void setUp() throws Exception {
		super.setUp();
		//ProcessEngineΪ̰߳ȫԶĿԹһ
		if(processEngine==null) {
			//˴ʹôַõactivitiļΪ classpath·µactiviti.cfg.xml
			//õH2ݿ
			processEngine = ProcessEngines.getDefaultProcessEngine();
		}
		//ȡĸַϢ
		repositoryService = processEngine.getRepositoryService();
		runtimeService = processEngine.getRuntimeService();
		taskService = processEngine.getTaskService();
		formService = processEngine.getFormService();
		historyService = processEngine.getHistoryService();
		identityService = processEngine.getIdentityService();
		managementService = processEngine.getManagementService();
		//չĳʼ
		initialize();
		
	}