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

1、演示

2、代码分享

public void processFile(@PathVariable String id, @PathVariable String type, HttpServletResponse response) {
        try {
            byte[] b = null;
            ProcessDefinitionVo pd = flowableProcessDefinitionService.getById(id);
            if (pd != null) {
                if (type.equals("xml")) {
                    response.setHeader("Content-type", "text/xml;charset=UTF-8");
                    InputStream inputStream = repositoryService.getResourceAsStream(pd.getDeploymentId(), pd.getResourceName());
                    b = IoUtil.readInputStream(inputStream, "image inputStream name");
                } else {
                    response.setHeader("Content-Type", "image/png");
                    InputStream inputStream = repositoryService.getResourceAsStream(pd.getDeploymentId(), pd.getDgrmResourceName());
                    b = IoUtil.readInputStream(inputStream, "image inputStream name");
                }
                response.getOutputStream().write(b);
            }
        } catch (Exception e) {
            LOGGER.error("ApiFlowableModelResource-loadXmlByModelId:" + e);
            e.printStackTrace();
        }
    }