我的第一個Activiti小程式
阿新 • • 發佈:2019-02-14
第二步:編寫一個spring格式的activiti.cfg.xml的配置檔案(這個配置檔案我放在了src目錄下面,如果放在其他目錄下面需要在程式中新增完整的路徑資訊)我用的是mysql資料庫。
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration"> <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/activiti" /> <property name="jdbcDriver" value="com.mysql.jdbc.Driver" /> <property name="jdbcUsername" value="root" /> <property name="jdbcPassword" value="root" /> <property name="databaseSchemaUpdate" value="true" /> <property name="jobExecutorActivate" value="false" /> <!-- <property name="mailServerHost" value="mail.my-corp.com" /> <property name="mailServerPort" value="5025" /> --> </bean> </beans>
第三步:編寫個log4j.properties檔案放在src目錄下面(之前沒有這個檔案會出現沒有日誌輸出的錯誤)這個檔案我沒有寫,而是在別人的例子中copy過來的。
# Output pattern : date [thread] priority category - message log4j.rootLogger=DEBUG, Console #Console log4j.appender.Console=org.apache.log4j.ConsoleAppender log4j.appender.Console.layout=org.apache.log4j.PatternLayout log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n #Project defalult level log4j.logger.me.kafeitu.demo=DEBUG #spring default level log4j.logger.org.springframework=INFO #hibernate default level log4j.logger.org.hibernate=ERROR #apache log4j.logger.org.apache=ERROR log4j.logger.net.sf.ehcache=ERROR
第四步:引入一個流程定義檔案,我直接用的Activiti 5.14使用者手冊中的VacationRequest這個流程定義
<?xml version="1.0" encoding="UTF-8" ?> <definitions id="definitions" targetNamespace="http://activiti.org/bpmn20" xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:activiti="http://activiti.org/bpmn"> <process id="vacationRequest" name="Vacation request"> <startEvent id="request" activiti:initiator="employeeName"> <extensionElements> <activiti:formProperty id="numberOfDays" name="Number of days" type="long" value="1" required="true"/> <activiti:formProperty id="startDate" name="First day of holiday (dd-MM-yyy)" datePattern="dd-MM-yyyy hh:mm" type="date" required="true" /> <activiti:formProperty id="vacationMotivation" name="Motivation" type="string" /> </extensionElements> </startEvent> <sequenceFlow id="flow1" sourceRef="request" targetRef="handleRequest" /> <userTask id="handleRequest" name="Handle vacation request" > <documentation> ${employeeName} would like to take ${numberOfDays} day(s) of vacation (Motivation: ${vacationMotivation}). </documentation> <extensionElements> <activiti:formProperty id="vacationApproved" name="Do you approve this vacation" type="enum" required="true"> <activiti:value id="true" name="Approve" /> <activiti:value id="false" name="Reject" /> </activiti:formProperty> <activiti:formProperty id="managerMotivation" name="Motivation" type="string" /> </extensionElements> <potentialOwner> <resourceAssignmentExpression> <formalExpression>management</formalExpression> </resourceAssignmentExpression> </potentialOwner> </userTask> <sequenceFlow id="flow2" sourceRef="handleRequest" targetRef="requestApprovedDecision" /> <exclusiveGateway id="requestApprovedDecision" name="Request approved?" /> <sequenceFlow id="flow3" sourceRef="requestApprovedDecision" targetRef="sendApprovalMail"> <conditionExpression xsi:type="tFormalExpression">${vacationApproved == 'true'}</conditionExpression> </sequenceFlow> <task id="sendApprovalMail" name="Send confirmation e-mail" /> <sequenceFlow id="flow4" sourceRef="sendApprovalMail" targetRef="theEnd1" /> <endEvent id="theEnd1" /> <sequenceFlow id="flow5" sourceRef="requestApprovedDecision" targetRef="adjustVacationRequestTask"> <conditionExpression xsi:type="tFormalExpression">${vacationApproved == 'false'}</conditionExpression> </sequenceFlow> <userTask id="adjustVacationRequestTask" name="Adjust vacation request"> <documentation> Your manager has disapproved your vacation request for ${numberOfDays} days. Reason: ${managerMotivation} </documentation> <extensionElements> <activiti:formProperty id="numberOfDays" name="Number of days" value="${numberOfDays}" type="long" required="true"/> <activiti:formProperty id="startDate" name="First day of holiday (dd-MM-yyy)" value="${startDate}" datePattern="dd-MM-yyyy hh:mm" type="date" required="true" /> <activiti:formProperty id="vacationMotivation" name="Motivation" value="${vacationMotivation}" type="string" /> <activiti:formProperty id="resendRequest" name="Resend vacation request to manager?" type="enum" required="true"> <activiti:value id="true" name="Yes" /> <activiti:value id="false" name="No" /> </activiti:formProperty> </extensionElements> <humanPerformer> <resourceAssignmentExpression> <formalExpression>${employeeName}</formalExpression> </resourceAssignmentExpression> </humanPerformer> </userTask> <sequenceFlow id="flow6" sourceRef="adjustVacationRequestTask" targetRef="resendRequestDecision" /> <exclusiveGateway id="resendRequestDecision" name="Resend request?" /> <sequenceFlow id="flow7" sourceRef="resendRequestDecision" targetRef="handleRequest"> <conditionExpression xsi:type="tFormalExpression">${resendRequest == 'true'}</conditionExpression> </sequenceFlow> <sequenceFlow id="flow8" sourceRef="resendRequestDecision" targetRef="theEnd2"> <conditionExpression xsi:type="tFormalExpression">${resendRequest == 'false'}</conditionExpression> </sequenceFlow> <endEvent id="theEnd2" /> </process> </definitions>
然後,建一個簡單的java類
package com.activiti.test; import org.activiti.engine.*; import com.mysql.jdbc.log.*; public class ActivitiTest { public static void main(String[] args){ ProcessEngine processEngine=ProcessEngines.getDefaultProcessEngine(); RepositoryService repositoryService=processEngine.getRepositoryService(); repositoryService.createDeployment().addClasspathResource("VacationRequest.bpmn20.xml") .deploy(); //Log.logInfo("Number of process definitions: " + repositoryService.createProcessDefinitionQuery().count()); System.out.println(repositoryService.createProcessDefinitionQuery().count()); } }
執行測試:輸出3.