导出 Excel 操作，新建路由文件：/apis/utils.http.yao代码如下：

{
  "name": "下载Excel",
  "version": "1.0.0",
  "description": "下载Excel",
  "group": "utils",
  "guard": "-",
  "paths": [
    {
      "guard": "-",
      "path": "/export/:name",
      "method": "GET",
      "process": "flows.utils.export",
      "in": ["$param.name"],
      "out": {
        "status": 200,
        "type": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
        "headers": {
          "Content-Disposition": "attachment;filename=导出数据.xlsx"
        }
      }
    }
  ]
}

新建文件：/flows/utils/export.flow.yao代码如下：

{
  "label": "下载",
  "version": "1.0.0",
  "description": "下载",
  "nodes": [
    {
      "name": "打印",
      "process": "xiang.helper.Print",
      "args": ["{{$in}}"]
    },
    {
      "name": "文件",
      "process": "yao.table.export",
      "args": ["{{$in.0}}", { "wheres": [{ "column": "id", "value": 1 }] }, 100]
    },
    {
      "name": "打印",
      "process": "xiang.helper.Print",
      "args": ["{{$res.文件}}"]
    },
    {
      "name": "数据",
      "process": "fs.system.ReadFile",
      "args": ["{{$res.文件}}", false]
    }
  ],
  "output": "{{$res.数据.content}}"
}

在/tables/ticket.tab.yao的layout["filter"]["actions"]数组中加入导出按钮

{
  "icon": "icon-plus",
  "title": "导出",
  "action": [
    {
      "name": "HistoryPush",
      "type": "Common.historyPush",
      "payload": {
        "pathname": "/api/utils/export/ticket",
        "public": true
      }
    }
  ]
}