通过流程xml 直接先发布模型，然后再通过发布模型之后的流程定义获取bpmn model来创建Model.

1、通过xml先发布模型

InputStream bpmnStream = multipartFile.getInputStream()
deployment = repositoryService.createDeployment().addInputStream(multipartFile.getOriginalFilename(), bpmnStream).deploy();List<ProcessDefinition> list = repositoryService.createProcessDefinitionQuery().deploymentId(deployment.getId()).list();String processDefinitionId = list.get(0).getId();convertToModel(processDefinitionId);

2. 发布之后 通过流程定义获取bpmn model新建model

注意这里的addModelEditorSource addModelEditorSourceExtra获取。

 Model modelData = repositoryService.newModel();ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().processDefinitionId(processDefinitionId).singleResult();InputStream bpmnStream = repositoryService.getResourceAsStream(processDefinition.getDeploymentId(),processDefinition.getResourceName());XMLInputFactory xif = XMLInputFactory.newInstance();InputStreamReader in = new InputStreamReader(bpmnStream, "UTF-8");XMLStreamReader xtr = xif.createXMLStreamReader(in);BpmnModel bpmnModel = new BpmnXMLConverter().convertToBpmnModel(xtr);BpmnJsonConverter converter = new BpmnJsonConverter();com.fasterxml.jackson.databind.node.ObjectNode modelNode = converter.convertToJson(bpmnModel);modelData.setKey(processDefinition.getKey());modelData.setName(processDefinition.getKey());ObjectNode modelObjectNode = objectMapper.createObjectNode();modelObjectNode.put(ModelDataJsonConstants.MODEL_NAME, processDefinition.getResourceName());modelObjectNode.put(ModelDataJsonConstants.MODEL_REVISION, 1);// 版本modelObjectNode.put(ModelDataJsonConstants.MODEL_DESCRIPTION,processDefinition.getResourceName());modelData.setMetaInfo(modelObjectNode.toString());repositoryService.saveModel(modelData);DefaultProcessDiagramGenerator generator = new DefaultProcessDiagramGenerator();generator.generateDiagram(bpmnModel,  new ArrayList<>());ByteArrayOutputStream bos = new ByteArrayOutputStream();IoUtil.copy(bpmnStream, bos);byte[] bytes = bos.toByteArray();repositoryService.addModelEditorSource(modelData.getId(), modelNode.toString().getBytes("utf-8"));repositoryService.addModelEditorSourceExtra(modelData.getId(), bytes);deploy(modelData.getId());