- 接口
- ProcessEngine 工作流引擎 可以通过spring和 Configuration.getProcessEngine();
- ExecutionService 执行
- ProcessInstance 流程实例
- ProcessDefinition 流程定义
- TaskService 任务
- IdentityService 自动增长
- HistoryService 历史记录
- ManagementService 管理
- RepositoryService 仓库
- 方法:
- 1.ProcessEngine
- processEngine.setAuthenticatedUserId(String );
- processEngine.setHibernateSession(Object);
- processEngine.setJdbcConnection(Connection);
- Object get(String);
- ExecutionService getExecutionService();
- HistoryService getHistoryService();
- IdentityService getIdentityService();
- ManagementService getManagementService();
- RepositoryService getRepositoryService();
- TaskService getTaskService();
- 1.查询流程实例:new Instance
- List<ProcessInstance> instances = executionService.createProcessInstanceQuery().list();
- 2.查询流程进度
- 1)得到当前流程中相匹配的活动 (可以得到活动的长高宽..)
- <%String id = request.getParameter("id");
- ProcessEngine processEngine = Configuration.getProcessEngine();
- RepositoryService repositoryService = processEngine.getRepositoryService();
- ExecutionService executionService = processEngine.getExecutionService();
- ProcessInstance processInstance = executionService.findProcessInstanceById(id);
- Set<String> activityNames = processInstance.findActiveActivityNames();
- ActivityCoordinates ac = repositoryService.getActivityCoordinates(processInstance.getProcessDefinitionId(),activityNames.iterator().next());%>
- <div style="position:absolute;border:1px solid red;left:<%=ac.getX()%>px;top:<%=ac.getY()%>px;width:<%=ac.getWidth()%>px;height:<%=ac.getHeight()%>px;"></div>
- 2)生成图片
- <img src="Definition_definitionImage.action?id=<%=id %>" style="position:absolute;left:0px;top:0px;" align="middle">
- RepositoryService repositoryService = this.getProcessEngine().getRepositoryService();
- ExecutionService executionService = this.getProcessEngine().getExecutionService();
- String id = this.getRequest().getParameter("id");
- ProcessInstance processInstance = executionService.findProcessInstanceById(id);
- String processDefinitionId = processInstance .getProcessDefinitionId();
- // processDefinitionId 方法表示去 JBPM4_DEPLOYPROP 中按 processDefinitionId和 STRINGVAL_ 字段去找 DEPLOYMENT
- // 简单说就是通过 流程部署的小项id 去找 流程对象
- ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery()
- .processDefinitionId(processDefinitionId).uniqueResult();
- System.out.println(processDefinition.getImageResourceName()+"-----"+processDefinition.getDeploymentId());
- // 图片输入流
- InputStream inputStream = null;
- // 如果是上传的是 xml 文件 , processDefinition.getImageResourceName() 就会是null .
- if(processDefinition.getImageResourceName()==null){
- String did = processDefinition.getDeploymentId();
- DefinitionImage definitionImage = this.getJbpmService().findImageByDefinitionId(did); //自己写的Service不是JBPM的API
- if(definitionImage!=null){
- // 通过 这个 xml 的 流程id 找到它在数据库 definitionImage表中的记录 ,中间也有他的 图片名称
- // 从而构造出 inputStream 对象
- String uploadRoot = super.getRequest().getRealPath("/upload/jpdl/"+definitionImage.getImageName());
- try {
- inputStream = new FileInputStream(uploadRoot);
- } catch (FileNotFoundException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
- }
- }else{
- // 从数据库读到的输入流 .
- inputStream = repositoryService.getResourceAsStream(processDefinition.getDeploymentId(),processDefinition.getImageResourceName());
- }
- byte[] b = new byte[1024];
- int len = -1;
- try {
- ServletOutputStream sos = this.getResponse().getOutputStream();
- while ((len = inputStream.read(b, 0, 1024)) != -1) {
- sos.write(b, 0, len);
- }
- } catch (Exception e) {
- // TODO: handle exception
- e.printStackTrace();
- }
- 3.查询流程定义 (相当于Class,流程实例相当于new 的类)
- List<ProcessDefinition> definitionList = this.getProcessEngine().getRepositoryService().createProcessDefinitionQuery().list();
- 4.开启流程,已经有动态表单了。
- String id=reuqest.getParameter("id"); //得到流程定义ID
- // 得到当前用户
- UserInfo userInfo = super.getLoginUser();
- //为了方便测试 , 先写死
- Map<String, Object> map = new HashMap<String, Object>();
- map.put(Definition_Action.USER_INFO, userInfo.getUserId());
- // 为什么这里不能有多个参数
- map.put(Definition_Action.FORM_ID, formId); // form 表单 id
- // 得到专门操作流程实例的 执行对象
- System.out.println(map);
- ExecutionService executionService = this.getProcessEngine()
- .getExecutionService();
- // 开启实例 , ProcessInstance 对象好像对应的就是 ExecutionService 的表
- ProcessInstance pi = executionService.startProcessInstanceById(id,map);
- 5.上传流程定义
- /*
- * 上传方法 (non-Javadoc) , 方法名写错了 , 应该是 uploadDefinition
- * 难点
- * 1. 上传的 zip 格式就很好处理
- * 2. 上传的是 xml , 要复杂一点 , 因为 xml 文件是不带 png 流程图的 , 这样的话就实现不了流程跟踪了 ,
- * 所有要去网上找了个 根据 xml 生成流程图 png 的工具 (这个方法中没实现 ) ,
- * 3. 把 xml的 流程id 和 生成的流程图名写到数据库中,当然前提是,把 xml要上传到 tomcat 先.
- */
- File src = this.getUpload();
- // 得到 "知识库" service
- RepositoryService rService = this.getProcessEngine().getRepositoryService();
- String fileName = this.getUploadFileName();
- String ext = fileName.substring(fileName.lastIndexOf(".")+1,fileName.length());
- if(ext.equals("zip")){
- try {
- ZipInputStream zis = new ZipInputStream(new FileInputStream(src));
- rService.createDeployment().addResourcesFromZipInputStream(zis)
- .deploy();
- } catch (Exception e) {
- // TODO: handle exception
- e.printStackTrace();
- }
- }else if(ext.equals("xml")){
- //如果上传成功后就要放到自己的表中保存起来。
- //流程定义对象 id
- String definitionId = rService.createDeployment().addResourceFromInputStream(this.getUploadFileName(),new FileInputStream(src)).deploy();
- }
- 6.删除流程定义
- RepositoryService repositoryService = this.getProcessEngine().getRepositoryService();
- //删除要流程部署ID
- repositoryService.deleteDeploymentCascade("depolymentId");
- 7.查询我的任务
- TaskService taskService = this.getProcessEngine().getTaskService();
- //得到用户任务
- List<Task> taskList = taskService.findPersonalTasks(userInfo.getUserId());
- //SQL:select * from JBPM4_TASK where assignee=?;
- // 得到任务变量 formId ?? var这里是不是在上面(开启流程)已经定义好了的。
- Object formId = taskService.getVariable(task.getId(), Definition_Action.FORM_ID);
JBPM 工作流 一些接口及方法
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