flowable自定义节点属性

灰太狼 2023-07-12 14:41 17阅读 0赞

1、模板定义xml中增加如下内容（节点标签下extensionElements增加自定义属性(标签)）：

![20200310085028858.png][]

2、自定义任务解析器CustomUserTaskJsonConverter extends UserTaskJsonConverter

重写convertElementToJson方法，增加以下内容

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3p6Y2hhbmNlcw_size_16_color_FFFFFF_t_70][]

重写convertJsonToElement方法

@Override
        protected FlowElement convertJsonToElement(JsonNode elementNode, JsonNode modelNode,
                                                   Map<String, JsonNode> shapeMap) {
            UserTask flowElement = (UserTask) super.convertJsonToElement(elementNode, modelNode, shapeMap);
    
            LOGGER.info("进入自定义属性解析");
            if(flowElement instanceof UserTask){
    
                String customSetting = getPropertyValueAsString("customSetting",elementNode);
                if(StringUtils.isNotBlank(customSetting)){
                    LOGGER.info("新增自定义属性[customSetting]="+customSetting);
                    ExtensionAttribute ea1 = generateExtensionAttribute("customSetting",customSetting);
                    flowElement.addAttribute(ea1);
                }
    //            addExtensionElement("customSetting", customSetting, flowElement);
            }
            return flowElement;
        }
    
        public static ExtensionAttribute generateExtensionAttribute(String key, String val){
            ExtensionAttribute ea = new ExtensionAttribute();
            ea.setNamespace("http://flowable.org/bpmn");
            ea.setName(key);
            ea.setNamespacePrefix("custom");
            ea.setValue(val);
            return ea;
        }

3、自定义CustomBpmnJsonConverter 继承BpmnJsonConverter

public class CustomBpmnJsonConverter extends BpmnJsonConverter {
    
        static {
            convertersToBpmnMap.put(STENCIL_TASK_USER,CustomUserTaskJsonConverter.class);
        }
    }

[20200310085028858.png]: https://img-blog.csdnimg.cn/20200310085028858.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3p6Y2hhbmNlcw_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200310130819704.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3p6Y2hhbmNlcw==,size_16,color_FFFFFF,t_70