新增PrintDot桥接功能，支持本地打印机连接和配置，优化打印模板设计，允许多页表格重复显示，改进打印预览和设计器界面，确保用户体验流畅。

jeecgboot-vue3/src/views/print/template/native/NativePrintDesigner.vue

@@ -13,6 +13,7 @@
         <a-button @click="sendBackward">下移图层</a-button>
         <a-button @click="previewTemplate">即时预览</a-button>
         <a-button @click="printTemplate">打印</a-button>
+        <a-button :loading="printDotLoading" @click="printTemplateViaPrintDot">PrintDot 打印</a-button>
         <a-button type="primary" :loading="saving" @click="saveTemplate">保存模板</a-button>
       </a-space>
     </div>
@@ -135,8 +136,21 @@
 
     <PageConfigModal v-model:open="pageConfigModalOpen" :schema="state.schema" @update-page="updatePage" />
 
-    <a-drawer v-model:open="previewVisible" title="即时预览" width="70%" placement="right">
-      <iframe class="preview-frame" :srcdoc="previewHtml"></iframe>
+    <a-drawer
+      v-model:open="previewVisible"
+      title="即时预览"
+      width="70%"
+      placement="right"
+      :body-style="{ padding: '12px 16px 20px', overflow: 'hidden' }"
+    >
+      <div class="native-instant-preview-host">
+        <iframe
+          class="preview-frame"
+          title="原生模板即时预览"
+          :srcdoc="previewHtml"
+          :style="{ height: `${previewDrawerIframeHeightPx}px` }"
+        />
+      </div>
     </a-drawer>
 
     <FreeTableCellEditModal
@@ -293,6 +307,7 @@
   import PropertiesPanel from './components/PropertiesPanel.vue';
   import ToolbarPalette from './components/ToolbarPalette.vue';
   import { printHtml } from './core/printService';
+  import { printNativeSchemaViaPrintDot } from '../utils/printNativeViaPrintDot';
   import { renderNativePrintHtml, resolvePrintPageCount } from './core/printRenderer';
   import { generateNativeMockDataObject } from './core/nativeMockData';
   import { buildNativeTemplateStylePayload } from './core/nativeTemplateStyleSerialize';
@@ -328,6 +343,7 @@
   } = useDesignerStore();
   const templateId = ref('');
   const saving = ref(false);
+  const printDotLoading = ref(false);
   const previewVisible = ref(false);
   const previewHtml = ref('');
   const selectedTableColumn = ref<{ elementId: string; columnKey: string } | null>(null);
@@ -796,6 +812,20 @@
     }
   });
 
+  /** 与列表预览逻辑一致：按 resolvePrintPageCount 估算 iframe 高度，避免多页内容被单页裁切 */
+  const PREVIEW_MM_TO_CSS_PX = 96 / 25.4;
+  const previewDrawerIframeHeightPx = computed(() => {
+    const sch = state?.schema;
+    const hMm = Number(sch?.page?.heightMm);
+    if (!sch?.page || !Number.isFinite(hMm) || hMm <= 0) {
+      return 900;
+    }
+    const count = Math.max(1, resolvePrintPageCount(sch, previewData.value));
+    const gapPx = 12;
+    const padY = 24 * 2;
+    return Math.round(count * hMm * PREVIEW_MM_TO_CSS_PX + (count - 1) * gapPx + padY);
+  });
+
   function generateMockData(options: { syncManual?: boolean; showMessage?: boolean } = {}) {
     const { syncManual = false, showMessage = true } = options;
     const mock = generateNativeMockDataObject(state.schema.elements, canvasJsonText.value);
@@ -921,6 +951,7 @@
       if (payload?.innerBorder && typeof payload.innerBorder === 'object') {
         base.innerBorder = { ...payload.innerBorder };
       }
+      base.printRepeated = payload.printRepeated === true;
       base.cells = Array.isArray(payload?.cells)
         ? payload.cells
             .map((cell: any) => ({
@@ -1295,6 +1326,22 @@
     printHtml(html);
   }
 
+  async function printTemplateViaPrintDot() {
+    printDotLoading.value = true;
+    try {
+      await printNativeSchemaViaPrintDot({
+        schema: state.schema,
+        data: previewData.value,
+        jobName: String(meta.templateCode || '').trim() || 'native-print',
+      });
+      createMessage.success('已通过 PrintDot 提交打印');
+    } catch (error: any) {
+      createMessage.error(error?.message || 'PrintDot 打印失败');
+    } finally {
+      printDotLoading.value = false;
+    }
+  }
+
   function handleDelete() {
     removeSelected();
     selectedTableColumn.value = null;
@@ -1976,10 +2023,23 @@
     border-left: 1px solid #f0f0f0;
   }
 
+  /* 高度由 :style 绑定 previewDrawerIframeHeightPx，避免与多页内容冲突 */
+  .native-instant-preview-host {
+    max-height: calc(100vh - 120px);
+    overflow: auto;
+    padding: 12px;
+    box-sizing: border-box;
+    background: #f0f0f0;
+    border-radius: 6px;
+  }
+
   .preview-frame {
+    display: block;
     width: 100%;
-    height: calc(100vh - 120px);
+    min-height: 320px;
     border: 1px solid #f0f0f0;
+    background: #fff;
+    box-sizing: border-box;
   }
 
   .image-analyze-modal-title {