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后端开发/activiti_demo.md
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# 工作流demo
# 工作流开发指南
整体流程
* 打开工作流模块，设计工作流流程
* 实现一个当前功能启动工作流的接口
* 在自己的业务层调用自己实现的工作流类
一、工作流开发整体思路
* 流程设计
* 实现启动接口
* 调用实现类
* 启动工作流
二、流程设计
1 新建工作流并填写对应的信息
![](/assets/wfl_demo_1.png)
![](/assets/wfl_demo_2.png)
2 编辑对应的审批节点链，可参考已实现的工作流程
*这里需要注意分类跟唯一标识这个字段，后面编写实现类的时候需要传入分类跟唯一标识。
2 保存之后点击对应工作流的第一个图标，即可编辑对应的工作流节点，下面将详细介绍一些常用的工作流属性（新建工作流的时候可参考已实现工作流）
* ID:自动生成，节点唯一标识
* 名称:当前节点中文描述
* 文档：消息机制，可在上下文中取到，如：我是${name},name为实现类里面配置的参数
* 审批方式：默认为全部通过
* 审批方式变量：当审批方式选择一定比例时，可设置变量如0.4，表示当审批人数达到这个比例后将会通过
* 审批规则：选择对应的审批人，可在审批规则中定义
* 加签：若勾选，则当前审批者可添加审批人
* 表单url：表示审批流程中可插入的页面，能让审判者读阅
* 执行监听器：执行监听器start跟end两种分别代表在该节点之前跟在该节点之后，在代理表达式里面可调用对应自己写的java类，格式如下：${endActionEventTask}
* 任务监听器：任务监听器可参考执行监听器
下图是一个完整的工作流流程设计
![](/assets/wfl_demo_3.png)
3 编写一个自己的实现类，实现IActivitiCommonService接口
二、实现启动接口
* 编写一个自己的实现类，实现IActivitiCommonService接口
![](/assets/wfl_demo_4.png)
......@@ -22,88 +42,87 @@
实现类代码如下
```java
package hls.core.wfl.service.impl;
import com.hand.hap.activiti.dto.ReProcdef;
import com.hand.hap.activiti.service.IActivitiService;
import com.hand.hap.activiti.service.IReProcdefService;
import com.hand.hap.core.IRequest;
import hls.core.prj.dto.PrjProject;
import hls.core.prj.dto.PrjProjectMeeting;
import hls.core.prj.mapper.PrjProjectMeetingMapper;
import hls.core.prj.service.PrjProjectService;
import hls.core.wfl.service.IActivitiCommonService;
import net.sf.json.JSONObject;
import org.activiti.rest.service.api.engine.variable.RestVariable;
import org.activiti.rest.service.api.runtime.process.ProcessInstanceCreateRequest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.ArrayList;import java.util.List;
import java.util.Map;
@Service
@Transactional
public class PrjActivitStartServiceImpl implements IActivitiCommonService
{
private static final String workFlowType = "PRJ_PROJECT"; @Autowired
private IActivitiService activitiService;
@Autowired
private IReProcdefService reProcdefService;
@Autowired
private PrjProjectService projectService;
@Autowired
private PrjProjectMeetingMapper meetingMapper;
@Override
public String getWorkFlowType() { return workFlowType; }
@Override
public void process(IRequest iRequest, List list, Map params)
{
private static final String workFlowType = "PRJ_PROJECT";
@Autowired
private IActivitiService activitiService;
@Autowired
private IReProcdefService reProcdefService;
@Autowired
private PrjProjectService projectService;
@Autowired
private PrjProjectMeetingMapper meetingMapper;
@Override
public String getWorkFlowType() { return workFlowType; }
@Override
public void process(IRequest iRequest, List list, Map params)
{
ProcessInstanceCreateRequest processInstanceCreateRequest = getProcessInstanceCreateRequest((PrjProject)list.get(0),iRequest);
activitiService.startProcess(iRequest, processInstanceCreateRequest);
}
private ProcessInstanceCreateRequest getProcessInstanceCreateRequest(PrjProject prjProject, IRequest iRequest)
{
ProcessInstanceCreateRequest createRequest = new ProcessInstanceCreateRequest();
{
ProcessInstanceCreateRequest createRequest = new ProcessInstanceCreateRequest();
PrjProject project=projectService.selectByPrimaryKey(iRequest,prjProject); ReProcdef reProcdefs ;
reProcdefs = reProcdefService.queryReProcdef("PRJ_PROJECT_APPROVE","PRJ_PROJECT");
String id = reProcdefs.getId_();
String name = reProcdefs.getName_(); createRequest.setProcessDefinitionId(id); createRequest.setBusinessKey(prjProject.getProjectId().toString());
List<RestVariable> variables = new ArrayList<RestVariable>(); List<RestVariable> transientVariables = new ArrayList<RestVariable>();
reProcdefs = reProcdefService.queryReProcdef("PRJ_PROJECT_APPROVE","PRJ_PROJECT");
String id = reProcdefs.getId_();
String name = reProcdefs.getName_(); createRequest.setProcessDefinitionId(id);
createRequest.setBusinessKey(prjProject.getProjectId().toString());
List<RestVariable> variables = new ArrayList<RestVariable>(); List<RestVariable> transientVariables = new ArrayList<RestVariable>();
RestVariable restVariable1 = new RestVariable(); RestVariable restVariable2 = new RestVariable();
RestVariable restVariable3 = new RestVariable();
RestVariable restVariable4 = new RestVariable();
RestVariable restVariable3 = new RestVariable();
RestVariable restVariable4 = new RestVariable();
RestVariable restVariable5 = new RestVariable();
RestVariable restVariable6 = new RestVariable();
restVariable1.setName("processDefinitionId");
restVariable1.setValue(id); variables.add(restVariable1);
restVariable2.setName("prjProject");
JSONObject jsonObject= new JSONObject().fromObject(prjProject); restVariable2.setValue(jsonObject.toString()); variables.add(restVariable2);
restVariable3.setName("iRequest"); restVariable3.setValue(iRequest);
variables.add(restVariable3);
restVariable4.setName("projectNum"); restVariable4.setValue(project.getProjectNumber()); variables.add(restVariable4); restVariable5.setName("projectName"); restVariable5.setValue(project.getProjectName()); variables.add(restVariable5); restVariable6.setName("startUserName"); restVariable6.setValue(iRequest.getEmployeeCode()); variables.add(restVariable6);
RestVariable restVariable6 = new RestVariable();
restVariable1.setName("processDefinitionId");
restVariable1.setValue(id); variables.add(restVariable1);
restVariable2.setName("prjProject");
JSONObject jsonObject= new JSONObject().fromObject(prjProject); restVariable2.setValue(jsonObject.toString());
variables.add(restVariable2);
restVariable3.setName("iRequest"); restVariable3.setValue(iRequest);
variables.add(restVariable3);
restVariable4.setName("projectNum"); restVariable4.setValue(project.getProjectNumber()); variables.add(restVariable4);
restVariable5.setName("projectName"); restVariable5.setValue(project.getProjectName()); variables.add(restVariable5);
restVariable6.setName("startUserName"); restVariable6.setValue(iRequest.getEmployeeCode()); variables.add(restVariable6);
RestVariable restVariable7 = new RestVariable();
RestVariable restVariable8 = new RestVariable(); RestVariable restVariable9 = new RestVariable(); restVariable7.setName("documentCategory"); restVariable7.setValue(project.getDocumentCategory()); variables.add(restVariable7); restVariable8.setName("documentType"); restVariable8.setValue(project.getDocumentType());
variables.add(restVariable8); restVariable9.setName("documentId"); restVariable9.setValue(project.getProjectId());
variables.add(restVariable9);
RestVariable restVariable8 = new RestVariable(); RestVariable restVariable9 = new RestVariable();
restVariable7.setName("documentCategory"); restVariable7.setValue(project.getDocumentCategory()); variables.add(restVariable7);
restVariable8.setName("documentType"); restVariable8.setValue(project.getDocumentType());
variables.add(restVariable8); restVariable9.setName("documentId"); restVariable9.setValue(project.getProjectId());
variables.add(restVariable9);
RestVariable restVariable10 = new RestVariable();
restVariable10.setName("doubleFlag");
restVariable10.setName("doubleFlag");
PrjProjectMeeting meeting = new PrjProjectMeeting();
meeting.setProjectId(prjProject.getProjectId());
List<PrjProjectMeeting> list = meetingMapper.select(meeting); if(list.size() >0) { restVariable10.setValue("Y"); }else{ restVariable10.setValue("N"); }
meeting.setProjectId(prjProject.getProjectId());
List<PrjProjectMeeting> list = meetingMapper.select(meeting); if(list.size() >0) { restVariable10.setValue("Y"); }else{
restVariable10.setValue("N"); }
variables.add(restVariable10);
RestVariable restVariable11 = new RestVariable(); restVariable11.setName("pName");
restVariable11.setValue(name);
restVariable11.setValue(name);
variables.add(restVariable11); createRequest.setVariables(variables); createRequest.setTransientVariables(transientVariables);
return createRequest;
}}
```
4 启动工作流
* 关键参数讲解：
private static final String workFlowType = "PRJ_PROJECT";在启动工作流的时候工作流会根据这个类型找到对应的实现类，
在启动工作流的时候会调用process方法，该方法会调用getProcessInstanceCreateRequest方法，在getProcessInstanceCreateRequest方法里面
可以将自己工作流所需参数都放到里面去，可以在后面的流程中取到自己所需参数
三 调用实现类并启动工作流
```
Map<String,Object> params = new HashMap<String,Object>();
params.put("workFlowType","PRJ_PROJECT");
activitiStartService.start(iRequest,projects,params);
```
* 代码解析
params.put("workFlowType","PRJ_PROJECT");放入的为工作流实现类的类型
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