【应用篇】Activiti外置表单简单应用（三）

Activiti的简单应用，使用外置表单的方式将业务页面绑定到工作流的结点上，当执行到当前结点时，打印出绑定表单的内容。

新建4个form页面，页面内容随便写些内容即可：



按照下图的方式依次绑定：



流程变量设置如图，其他的类似：



对应生成的xml：

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<?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>

<userTask id="usertask1" name="显示用户详细信息" activiti:formKey="userinfo.form"></userTask>

<sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>

<exclusiveGateway id="exclusivegateway1" name="Exclusive Gateway"></exclusiveGateway>

<sequenceFlow id="flow2" sourceRef="usertask1" targetRef="exclusivegateway1"></sequenceFlow>

<userTask id="usertask3" name="耳机验证" activiti:formKey="ear.form"></userTask>

<sequenceFlow id="flow4" name="耳机验证" sourceRef="exclusivegateway1" targetRef="usertask3">

<conditionExpression xsi:type="tFormalExpression"><![CDATA[${result=="ear"}]]></conditionExpression>

</sequenceFlow>

<userTask id="usertask4" name="二次登陆" activiti:formKey="secondtime.form"></userTask>

<sequenceFlow id="flow5" name="存在登陆信息" sourceRef="exclusivegateway1" targetRef="usertask4">

<conditionExpression xsi:type="tFormalExpression"><![CDATA[${result=="exist"}]]></conditionExpression>

</sequenceFlow>

<exclusiveGateway id="exclusivegateway2" name="Exclusive Gateway"></exclusiveGateway>

<sequenceFlow id="flow6" sourceRef="usertask4" targetRef="exclusivegateway2"></sequenceFlow>

<sequenceFlow id="flow7" name="密码错误" sourceRef="exclusivegateway2" targetRef="usertask4">

<conditionExpression xsi:type="tFormalExpression"><![CDATA[${result=="no"}]]></conditionExpression>

</sequenceFlow>

<sequenceFlow id="flow8" name="密码正确" sourceRef="exclusivegateway2" targetRef="usertask3">

<conditionExpression xsi:type="tFormalExpression"><![CDATA[${result=="yes"}]]></conditionExpression>

</sequenceFlow>

<userTask id="usertask5" name="键盘验证" activiti:formKey="keyboard.form"></userTask>

<sequenceFlow id="flow9" sourceRef="usertask3" targetRef="usertask5"></sequenceFlow>

<endEvent id="endevent1" name="End"></endEvent>

<sequenceFlow id="flow10" sourceRef="usertask5" targetRef="endevent1"></sequenceFlow>

</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="75.0" y="79.0"></omgdc:Bounds>

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">

<omgdc:Bounds height="55.0" width="105.0" x="155.0" y="69.0"></omgdc:Bounds>

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="exclusivegateway1" id="BPMNShape_exclusivegateway1">

<omgdc:Bounds height="40.0" width="40.0" x="305.0" y="77.0"></omgdc:Bounds>

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="usertask3" id="BPMNShape_usertask3">

<omgdc:Bounds height="55.0" width="105.0" x="415.0" y="70.0"></omgdc:Bounds>

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="usertask4" id="BPMNShape_usertask4">

<omgdc:Bounds height="55.0" width="105.0" x="273.0" y="178.0"></omgdc:Bounds>

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="exclusivegateway2" id="BPMNShape_exclusivegateway2">

<omgdc:Bounds height="40.0" width="40.0" x="447.0" y="185.0"></omgdc:Bounds>

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="usertask5" id="BPMNShape_usertask5">

<omgdc:Bounds height="55.0" width="105.0" x="600.0" y="70.0"></omgdc:Bounds>

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">

<omgdc:Bounds height="35.0" width="35.0" x="750.0" y="80.0"></omgdc:Bounds>

</bpmndi:BPMNShape>

<bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">

<omgdi:waypoint x="110.0" y="96.0"></omgdi:waypoint>

<omgdi:waypoint x="155.0" y="96.0"></omgdi:waypoint>

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">

<omgdi:waypoint x="260.0" y="96.0"></omgdi:waypoint>

<omgdi:waypoint x="305.0" y="97.0"></omgdi:waypoint>

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">

<omgdi:waypoint x="345.0" y="97.0"></omgdi:waypoint>

<omgdi:waypoint x="415.0" y="97.0"></omgdi:waypoint>

<bpmndi:BPMNLabel>

<omgdc:Bounds height="14.0" width="48.0" x="347.0" y="80.0"></omgdc:Bounds>

</bpmndi:BPMNLabel>

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="flow5" id="BPMNEdge_flow5">

<omgdi:waypoint x="325.0" y="117.0"></omgdi:waypoint>

<omgdi:waypoint x="325.0" y="178.0"></omgdi:waypoint>

<bpmndi:BPMNLabel>

<omgdc:Bounds height="14.0" width="72.0" x="245.0" y="151.0"></omgdc:Bounds>

</bpmndi:BPMNLabel>

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="flow6" id="BPMNEdge_flow6">

<omgdi:waypoint x="378.0" y="205.0"></omgdi:waypoint>

<omgdi:waypoint x="447.0" y="205.0"></omgdi:waypoint>

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="flow7" id="BPMNEdge_flow7">

<omgdi:waypoint x="467.0" y="225.0"></omgdi:waypoint>

<omgdi:waypoint x="466.0" y="309.0"></omgdi:waypoint>

<omgdi:waypoint x="389.0" y="309.0"></omgdi:waypoint>

<omgdi:waypoint x="325.0" y="309.0"></omgdi:waypoint>

<omgdi:waypoint x="325.0" y="233.0"></omgdi:waypoint>

<bpmndi:BPMNLabel>

<omgdc:Bounds height="14.0" width="48.0" x="469.0" y="267.0"></omgdc:Bounds>

</bpmndi:BPMNLabel>

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="flow8" id="BPMNEdge_flow8">

<omgdi:waypoint x="467.0" y="185.0"></omgdi:waypoint>

<omgdi:waypoint x="467.0" y="125.0"></omgdi:waypoint>

<bpmndi:BPMNLabel>

<omgdc:Bounds height="14.0" width="48.0" x="468.0" y="166.0"></omgdc:Bounds>

</bpmndi:BPMNLabel>

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="flow9" id="BPMNEdge_flow9">

<omgdi:waypoint x="520.0" y="97.0"></omgdi:waypoint>

<omgdi:waypoint x="600.0" y="97.0"></omgdi:waypoint>

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="flow10" id="BPMNEdge_flow10">

<omgdi:waypoint x="705.0" y="97.0"></omgdi:waypoint>

<omgdi:waypoint x="750.0" y="97.0"></omgdi:waypoint>

</bpmndi:BPMNEdge>

</bpmndi:BPMNPlane>

</bpmndi:BPMNDiagram>

</definitions>

代码实现：

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import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.util.HashMap;

import java.util.Map;

import java.util.zip.ZipInputStream;

import org.activiti.engine.FormService;

import org.activiti.engine.ProcessEngine;

import org.activiti.engine.ProcessEngineConfiguration;

import org.activiti.engine.RepositoryService;

import org.activiti.engine.RuntimeService;

import org.activiti.engine.TaskService;

import org.activiti.engine.repository.Deployment;

import org.activiti.engine.repository.ProcessDefinition;

import org.activiti.engine.repository.ProcessDefinitionQuery;

import org.activiti.engine.runtime.ProcessInstance;

import org.activiti.engine.task.Task;

import com.tgb.itoo.activiti.controller.CommonDelegate;

import com.tgb.itoo.activiti.controller.milaoshi;

import com.tgb.itoo.activiti.controller.tanghuan;

public class formprocess {

private static String readDataFromConsole(String prompt) {

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

String str = null;

try {

System.out.print(prompt);

str = br.readLine();

} catch (IOException e) {

e.printStackTrace();

}

return str;

}

public static void main(String[] args) {

String str = readDataFromConsole("Please input string：");

System.out.println("The information from console： " + str);

ProcessEngineConfiguration processEngineConfiguration = ProcessEngineConfiguration

.createStandaloneProcessEngineConfiguration();

// 连接数据库的配置

processEngineConfiguration.setJdbcDriver("com.mysql.jdbc.Driver");

processEngineConfiguration

.setJdbcUrl("jdbc:mysql://localhost:3306/activitiexam?useUnicode=true&characterEncoding=utf8");

processEngineConfiguration.setJdbcUsername("root");

processEngineConfiguration.setJdbcPassword("root");

processEngineConfiguration.setDatabaseSchemaUpdate("create");

ProcessEngine processEngine = processEngineConfiguration

.buildProcessEngine();

System.out.println(processEngine);

// 获取流程存储服务组件

RepositoryService repositoryService = processEngine

.getRepositoryService();

// 获取运行时服务组件

RuntimeService runtimeService = processEngine.getRuntimeService();

// 获取流程任务组件

TaskService taskService = processEngine.getTaskService();

//获取流程的表单组件

FormService formService=processEngine.getFormService();

// 1、部署流程文件

InputStream in =repositoryService.createDeployment().name("MyProcess")

.getClass().getClassLoader().getResourceAsStream("diagrams/"+ str +".zip");

ZipInputStream zipInputStream = new ZipInputStream(in);

Deployment deployment = processEngine.getRepositoryService()// 与流程定义和部署对象相关的Service

.createDeployment()// 创建一个部署对象

.name("流程定义")// 添加部署的名称

.addZipInputStream(zipInputStream)// 指定zip格式的文件完成部署

.deploy();// 完成部署

// 2、启动流程--方式一

/*ProcessInstance processInstance = runtimeService

.startProcessInstanceByKey("myProcess");

*/

/**

* 2、启动流程--方式二

* 此处使用这种方式，可能有问题，当所有的流程定义的key值均为myProcess时，查询出来的数据为多条

* 但是真正使用时，我们是根据前台显示的多条中选择其中之一，就可以直接获取processDefinitionID故也没有问题

*/

ProcessDefinitionQuery query = repositoryService

.createProcessDefinitionQuery()

.processDefinitionKey("myProcess").active()

.orderByProcessDefinitionVersion().desc();

ProcessDefinition processDefinition = query.list().get(0);

Map<String, String> formProperties = new HashMap<String, String>();

formProperties.put("numberOfDays", "20150601");

//此处如果第二个参数为null值则报错，即使不放入任何数据也要使用map格式的对象

ProcessInstance processInstance = formService

.submitStartFormData(processDefinition.getId(), formProperties);

String end="1";

while (end.equalsIgnoreCase("1")) {

// 3、查询任务

Task task = taskService.createTaskQuery()

.processInstanceId(processInstance.getId()).singleResult();

;

if (task != null) {

Object renderedTaskForm = formService.getRenderedTaskForm(task.getId());

System.out.println("表单内容---"+renderedTaskForm.toString());

System.out.println("任务名称---"+task.getName());

/**

* 如果整个流程都是顺序执行可以不暂停的，则去掉此段代码即可

* 注：现实中存在的是页面流转过程中是需要点击下一步操作的，可以将此暂停理解为下一步的操作

*/

str = readDataFromConsole("Please input next:");

Map<String, Object> variables = new HashMap<String, Object>();

variables.put("result", str);

//方式一启动流程的完成任务，如果下一个任务需要参数使用map传递，此处的变量均是给下一个任务设置的

taskService.complete(task.getId(),variables);

//方式二启动流程完成任务

//formService.submitTaskFormData(task.getId(), formProperties);

//注：以上的两种方式可以混用

}else {

end="0";

System.out.println("任务已经完成");

}

}

}

}

执行结果：



总结：

以上实现了结点绑定页面的操作，当执行到当前结点时，会打印出绑定页面的内容，这样页面的执行顺序就不需要我们去管理，而可以通过简单的配置实现，以上只是一个简单的main函数实现，下面会继续实现一个简单的demo。