02.flowable 流程模板导入

项目地址：https://gitee.com/lwj/flowable.git 分支：flowable-base
视频讲解地址
https://space.bilibili.com/485524575/channel/detail?cid=94579

1、演示

2、导入的方法

public ModelRepresentation importProcessModel(MultipartFile file, ModelRepresentation model) {
        String fileName = file.getOriginalFilename();
        if (fileName != null && (fileName.endsWith(".bpmn") || fileName.endsWith(".bpmn20.xml"))) {
            try {
                XMLInputFactory xif = XmlUtil.createSafeXmlInputFactory();
                InputStreamReader xmlIn = new InputStreamReader(file.getInputStream(), "UTF-8");
                XMLStreamReader xtr = xif.createXMLStreamReader(xmlIn);
                BpmnModel bpmnModel = bpmnXmlConverter.convertToBpmnModel(xtr);
                //模板验证
                ProcessValidator validator = new ProcessValidatorFactory().createDefaultProcessValidator();
                List<ValidationError> errors = validator.validate(bpmnModel);
                if (CollectionUtils.isNotEmpty(errors)){
                    StringBuffer es = new StringBuffer();
                    errors.forEach(ve -> es.append(ve.toString()).append("/n"));
                    throw new BadRequestException("模板验证失败，原因: " + es.toString());
                }
                if (CollectionUtils.isEmpty(bpmnModel.getProcesses())) {
                    throw new BadRequestException("No process found in definition " + fileName);
                }
                if (bpmnModel.getLocationMap().size() == 0) {
                    BpmnAutoLayout bpmnLayout = new BpmnAutoLayout(bpmnModel);
                    bpmnLayout.execute();
                }
                ObjectNode modelNode = bpmnJsonConverter.convertToJson(bpmnModel);
                org.flowable.bpmn.model.Process process = bpmnModel.getMainProcess();
                String name = process.getId();
                if (StringUtils.isNotEmpty(process.getName())) {
                    name = process.getName();
                }
                String description = process.getDocumentation();
                model.setKey(process.getId());
                model.setName(name);
                model.setDescription(description);
                model.setModelType(AbstractModel.MODEL_TYPE_BPMN);

                User createdBy = SecurityUtils.getCurrentUserObject();
                //查询是否已经存在流程模板
                Model newModel = new Model();
                List<Model> models = modelRepository.findByKeyAndType(model.getKey(), model.getModelType());
                if (CollectionUtils.isNotEmpty(models)) {
                    Model updateModel = models.get(0);
                    newModel.setId(updateModel.getId());
                }
                newModel.setName(model.getName());
                newModel.setKey(model.getKey());
                newModel.setModelType(model.getModelType());
                newModel.setCreated(Calendar.getInstance().getTime());
                newModel.setCreatedBy(createdBy.getId());
                newModel.setDescription(model.getDescription());
                newModel.setModelEditorJson(modelNode.toString());
                newModel.setLastUpdated(Calendar.getInstance().getTime());
                newModel.setLastUpdatedBy(createdBy.getId());
                newModel.setTenantId(model.getTenantId());


                newModel = modelService.createModel(newModel, SecurityUtils.getCurrentUserObject());
                return new ModelRepresentation(newModel);
            } catch (BadRequestException e) {
                throw e;
            } catch (Exception e) {
                LOGGER.error("Import failed for {}", fileName, e);
                throw new BadRequestException("Import failed for " + fileName + ", error message " + e.getMessage());
            }
        } else {
            throw new BadRequestException("Invalid file name, only .bpmn and .bpmn20.xml files are supported not " + fileName);
        }
    }

有些代码可能是没有放到这里，可以去git上看。