activiti 添加流程模型并返回 modelId

/**添加流程模型并返回modelId
 * @param process_id //流程唯一标识key
 * @param process_author //流程作者
 * @param name //流程名称
 * @param modelname //模型名称
 * @param description //模型描述
 * @param category //模型分类
 * @from  fhadmin.cn
 * @throws UnsupportedEncodingException
 */
protected String createModel(String process_id,String process_author,String name,String modelname,String description,String category) throws UnsupportedEncodingException{

ObjectMapper objectMapper = new ObjectMapper();
        ObjectNode editorNode = objectMapper.createObjectNode();
        editorNode.put("id", "canvs");
        editorNode.put("resourceId", "canvs");
        ObjectNode stencilSetNode = objectMapper.createObjectNode();
        stencilSetNode.put("namespace", "http://b3mn.org/stencilset/bpmn2.0#");//命名空间(禁止修改)
        stencilSetNode.put("author", "fhadmin.cn");//流程节点作者
        editorNode.set("stencilset", stencilSetNode);
        ObjectNode propertiesNode = objectMapper.createObjectNode();
        propertiesNode.put("process_id",process_id); //流程唯一标识
        propertiesNode.put("process_author",process_author);//流程作者
        propertiesNode.put("name",name);  //流程名称
        editorNode.set("properties", propertiesNode);

        ObjectNode modelObjectNode = objectMapper.createObjectNode();
        modelObjectNode.put("name", modelname);//模型名称
        modelObjectNode.put("revision", 1);//模型版本
        modelObjectNode.put("description", description);//模型描述
Model modelData = repositoryService.newModel();
modelData.setCategory(category);//模型分类
modelData.setDeploymentId(null);
modelData.setKey(null);
modelData.setMetaInfo(modelObjectNode.toString());
modelData.setName(modelname);//模型名称
modelData.setTenantId("");
modelData.setVersion(1);

repositoryService.saveModel(modelData);//保存模型,存储数据到表：act_re_model 流程设计模型部署表
        repositoryService.addModelEditorSource(modelData.getId(), editorNode.toString().getBytes("utf-8"));//保存资源,存储数据到表：act_ge_bytearray 二进制数据表

        return modelData.getId();
}