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Activiti5 工作流的Helloworld的感悟（比較詳細）

Activiti5，相信做過OA系統的對它不陌生。這次資料庫使用的是Mysql和Activiti使用的版本是5.15，具體如何安裝請參考：《Activiti5.16使用者手冊》----12. Eclipse Designer（安裝跟版本沒有什麼大的改變）http://www.mossle.com/docs/activiti/

首先我們在寫代碼前：

切換到Java的角度，建立一個Java項目（這裡叫activiti1）然後打開Java Build Path，參考以下圖進行更改：

Activiti5 工作流的Helloworld的感悟（比較詳細）

再寫代碼前：先寫一個環境的測試demo(記得要導入需要的jar包):

jar包：

Activiti5 工作流的Helloworld的感悟（比較詳細）
Activiti5 工作流的Helloworld的感悟（比較詳細）
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngineConfiguration;
import org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration;
import org.junit.Test;

public class TestEnv {

	//搭建環境（建立流程引擎配置對象）
StandaloneProcessEngineConfiguration A;
	@Test
	public void test() {
		// 1.建立流程引擎配置對象
		ProcessEngineConfiguration configuration = ProcessEngineConfiguration
				.createStandaloneProcessEngineConfiguration();

		// 2.完善資料庫相關配置
		configuration.setJdbcDriver("com.mysql.jdbc.Driver");
		configuration
				.setJdbcUrl("jdbc:mysql:///activiti1?createDatabaseIfNotExist=true");
		configuration.setJdbcUsername("root");
		configuration.setJdbcPassword("");

		// 設定資料庫建表政策，預設為false
		configuration
				.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE);

		// 3.使用配置對象建立ProcessEngine
		ProcessEngine processEngine = configuration.buildProcessEngine();
	}
}

----------------------------------------------------------------------------------------------------------------------------------------------------------

現在來寫第一個HelloWorld

①上面寫的環境測試的資料庫相關配置其實可以寫到一個配置檔案（activiti.cfg.xml）中

activiti.cfg.xml：

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
	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
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">


<!-- 	<bean id="processEngineConfiguration" class="org.activiti.engine.ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration"> -->
	<bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
<!-- 		資料庫連接配接配置 -->
		<property name="jdbcDriver" value="com.mysql.jdbc.Driver"></property>
		<property name="jdbcUrl" value="jdbc:mysql:///activiti1?createDatabaseIfNotExist=true"></property>
		<property name="jdbcUsername" value="root"></property>
		<property name="jdbcPassword" value=""></property>
		
<!-- 		建表政策 -->
		<property name="databaseSchemaUpdate" value="true"></property>
	</bean>


</beans>

②在看流程圖前首先要設定讓Eclipse儲存PNG圖檔：（如果看不到Activiti麻煩你檢查是否成功）：

将“Create Process definition image when saving the diagram”勾上

Activiti5 工作流的Helloworld的感悟（比較詳細）

③參考圖檔建立相應的檔案：

Activiti5 工作流的Helloworld的感悟（比較詳細）

與其相對應的xml檔案：

helloWorld.xml:

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">
  <process id="myProcess" name="My process" isExecutable="true">
    <startEvent id="startevent1" name="Start"></startEvent>
    <endEvent id="endevent1" name="End"></endEvent>
    <userTask id="員工請假" name="員工請假" activiti:assignee="張三"></userTask>
    <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="員工請假"></sequenceFlow>
    <sequenceFlow id="flow3" sourceRef="員工請假" targetRef="usertask1"></sequenceFlow>
    <sequenceFlow id="flow4" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>
    <userTask id="usertask1" name="老闆審批" activiti:assignee="老闆"></userTask>
  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_myProcess">
    <bpmndi:BPMNPlane bpmnElement="myProcess" id="BPMNPlane_myProcess">
      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="270.0" y="130.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="270.0" y="450.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="員工請假" id="BPMNShape_員工請假">
        <omgdc:Bounds height="55.0" width="105.0" x="235.0" y="200.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
        <omgdc:Bounds height="55.0" width="105.0" x="235.0" y="320.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
        <omgdi:waypoint x="287.0" y="165.0"></omgdi:waypoint>
        <omgdi:waypoint x="287.0" y="200.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
        <omgdi:waypoint x="287.0" y="255.0"></omgdi:waypoint>
        <omgdi:waypoint x="287.0" y="320.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
        <omgdi:waypoint x="287.0" y="375.0"></omgdi:waypoint>
        <omgdi:waypoint x="287.0" y="450.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</definitions>

紅色圈起來的比較重要，需要人工填寫的：

Activiti5 工作流的Helloworld的感悟（比較詳細）

④HelloWorld的測試代碼：（初次使用可将3.檢視任務和4.辦理任務注釋掉）

import java.util.List;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.repository.DeploymentBuilder;
import org.activiti.engine.task.Task;
import org.junit.Test;

public class HelloWorld {

	// 1.釋出流程規則

	@Test
	public void deployFlow() throws Exception {
		// 建立測試環境（建立核心ProcessEngine,監測環境搭建是否正确）
		ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();

		RepositoryService repositoryService = processEngine
				.getRepositoryService();

		DeploymentBuilder builder = repositoryService.createDeployment();

		builder.addClasspathResource("helloworld.bpmn").addClasspathResource(
				"helloworld.png");
		builder.deploy();
	}

	// 2.啟動流程執行個體
	@Test
	public void startFlow() throws Exception {
		ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
		RuntimeService runtimeService = processEngine.getRuntimeService();
		runtimeService.startProcessInstanceByKey("myProcess");
	}

	// 3.檢視任務
	@Test
	public void quertTask() {
		ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
		TaskService taskService = processEngine.getTaskService();

		String userId = "張三";
		List<Task> tasks = taskService.createTaskQuery().taskAssignee(userId)
				.list();
		for (Task task : tasks) {
			System.out.println("Id:" + task.getId() + ",name:" + task.getName()
					+ ",assignee:" + task.getAssignee() + ",createTime:"
					+ task.getCreateTime());
		}
	}
	
	//4.辦理任務
	@Test
	public void completeTask() throws Exception{
		ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
		TaskService taskService = processEngine.getTaskService();
		String taskId="204";
		taskService.complete(taskId);
	}

}

如果你在建立的資料庫（activiti1）中看到如下圖的表：證明你已經成功了：

Activiti5 工作流的Helloworld的感悟（比較詳細）

相關工程的代碼下載下傳位址：

http://download.csdn.net/detail/u011487470/7748047

工作流 activiti5 oa系統 mysql 請假流程
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