基于若依的ruoyi-nbcio流程管理系统仿钉钉流程json转bpmn的flowable的xml格式（排它条件网关）

更多ruoyi-nbcio功能请看演示系统

gitee源代码地址

前后端代码： https://gitee.com/nbacheng/ruoyi-nbcio

演示地址：RuoYi-Nbcio后台管理系统

这个章节来完成并行网关与排它条件网关的功能

1、前端

目前就修改了排它条件网关的前端条件部分，简化条件公式，考虑与原有流程设计器兼容。

主要是以下部分修改

 <!-- 条件  -->
    <section class="condition-pane" v-if="value && isConditionNode()">

      <!-- 字符串条件 -->
      <el-input placeholder="请输入条件表达式" v-model="pconditions">
          <template slot="prepend">条件表达式:</template>
        </el-input>

    </section>

    /**
     * 条件节点确认保存得回调
     */
    conditionNodeComfirm() {
      this.properties.conditions = this.pconditions
      // 发起人虽然是条件 但是这里把发起人放到外部单独判断
      this.properties.initiator = this.initiator['dep&user']
      //this.initiator['dep&user'] && (nodeContent = `[发起人: ${this.getOrgSelectLabel('condition')}]` + '\n' + nodeContent)
      this.$emit("confirm", this.properties, this.pconditions || '请设置条件表达式');
      this.visible = false;
    },

/**
     * 初始化条件节点数据
     */
    initConditionNodeData(){
       this.pconditions = this.value.content
    },

2、排它条件网关后端修改

String createExclusiveGatewayBuilder(String formId, JSONObject flowNode) throws InvocationTargetException, IllegalAccessException {
        //String name = flowNode.getString("nodeName");
        String exclusiveGatewayId = id("exclusiveGateway");
        ExclusiveGateway exclusiveGateway = new ExclusiveGateway();
        exclusiveGateway.setId(exclusiveGatewayId);
        exclusiveGateway.setName("排它条件网关");
        ddProcess.addFlowElement(exclusiveGateway);
        ddProcess.addFlowElement(connect(formId, exclusiveGatewayId));

        if (Objects.isNull(flowNode.getJSONArray("conditionNodes")) && Objects.isNull(flowNode.getJSONObject("childNode"))) {
            return exclusiveGatewayId;
        }
        List<JSONObject> flowNodes = Optional.ofNullable(flowNode.getJSONArray("conditionNodes")).map(e -> e.toJavaList(JSONObject.class)).orElse(Collections.emptyList());
        List<String> incoming = Lists.newArrayListWithCapacity(flowNodes.size());

        List<JSONObject> conditions = Lists.newCopyOnWriteArrayList();
        for (JSONObject element : flowNodes) {
            JSONObject childNode = element.getJSONObject("childNode");
            JSONObject properties = element.getJSONObject("properties");
            String nodeName = properties.getString("title");
            String expression = properties.getString("conditions");

            if (Objects.isNull(childNode)) {
                incoming.add(exclusiveGatewayId);
                JSONObject condition = new JSONObject();
                condition.fluentPut("nodeName", nodeName)
                        .fluentPut("expression", expression);
                conditions.add(condition);
                continue;
            }
            // 只生成一个任务，同时设置当前任务的条件
            childNode.put("incoming", Collections.singletonList(exclusiveGatewayId));
            String identifier = create(exclusiveGatewayId, childNode);
            List<SequenceFlow> flows = ddSequenceFlows.stream().filter(flow -> StringUtils.equals(exclusiveGatewayId, flow.getSourceRef()))
                    .collect(Collectors.toList());
            
            flows.stream().forEach(
                    e -> {
                        if (StringUtils.isBlank(e.getName()) && StringUtils.isNotBlank(nodeName)) {
                            e.setName(nodeName);
                        }
                        // 设置条件表达式
                        if (Objects.isNull(e.getConditionExpression()) && StringUtils.isNotBlank(expression)) {
                            e.setConditionExpression(expression);
                        }
                    }
            );
            if (Objects.nonNull(identifier)) {
                incoming.add(identifier);
            }
        }


        JSONObject childNode = flowNode.getJSONObject("childNode");
        if (Objects.nonNull(childNode)) {
            if (incoming == null || incoming.isEmpty()) {
                return create(exclusiveGatewayId, childNode);
            } else {
                // 所有 service task 连接 end exclusive gateway
                childNode.put("incoming", incoming);
                FlowElement flowElement = ddBpmnModel.getFlowElement(incoming.get(0));
                // 1.0 先进行边连接, 暂存 nextNode
                JSONObject nextNode = childNode.getJSONObject("childNode");
                childNode.put("childNode", null);
                String identifier = create(flowElement.getId(), childNode);
                for (int i = 1; i < incoming.size(); i++) {
                	ddProcess.addFlowElement(connect(incoming.get(i), identifier));
                }

                //  针对 gateway 空任务分支 添加条件表达式
                if (!conditions.isEmpty()) {
                    FlowElement flowElement1 = ddBpmnModel.getFlowElement(identifier);
                    // 获取从 gateway 到目标节点 未设置条件表达式的节点
                    List<SequenceFlow> flows = ddSequenceFlows.stream().filter(flow -> StringUtils.equals(flowElement1.getId(), flow.getTargetRef()))
                            .filter(flow -> StringUtils.equals(flow.getSourceRef(), exclusiveGatewayId))
                            .collect(Collectors.toList());
                    flows.stream().forEach(sequenceFlow -> {
                        if (!conditions.isEmpty()) {
                            JSONObject condition = conditions.get(0);
                            String nodeName = condition.getString("content");
                            String expression = condition.getString("expression");

                            if (StringUtils.isBlank(sequenceFlow.getName()) && StringUtils.isNotBlank(nodeName)) {
                                sequenceFlow.setName(nodeName);
                            }
                            // 设置条件表达式
                            if (Objects.isNull(sequenceFlow.getConditionExpression()) && StringUtils.isNotBlank(expression)) {
                                sequenceFlow.setConditionExpression(expression);
                            }

                            conditions.remove(0);
                        }
                    });

                }

                // 1.1 边连接完成后，在进行 nextNode 创建
                if (Objects.nonNull(nextNode)) {
                    return create(identifier, nextNode);
                } else {
                    return identifier;
                }
            }
        }
        return exclusiveGatewayId;
    }

4、效果图如下：