1>FlowCard/config.js 增加
  serviceTask: {
    type: 'serviceTask',
    content: '请设置Java类',
    properties: {
      title: 'Java类',
      serviceClassName: "" //调用的Java类
    }
  },
2>FlowCard/index.vue 增加

            <div>
              <div class="condition-icon" onClick={ctx.eventLancher.bind( ctx, "addServiceTaskNode",  data, isBranch )} >
                <i class="el-icon-s-tools" style="vertical-align: middle;"></i>
              </div>
              业务节点
            </div>
          </div>

3FlowCard\util.js

  static addServiceTaskNode(data, isBranchAction) {
    // 复用addApprovalNode  因为和审批人基本一致
    this.addApprovalNode(data, isBranchAction, this.createNode('serviceTask', data.nodeId))
  }


