feat: 合同导出新增附件图片配置功能

- 新增附件图片加载区域（从 businessAnnex/techAnnex 等字段提取 OSS 图片）
- 支持图片勾选显隐、拖拽排序（上移/下移）
- 导出 HTML 预览和 PDF 均支持图片附件页渲染
- @open 重构为 onDialogOpen，自动拉取附件列表
- 新增 loadImage 辅助方法，PDF 导出支持 JPEG 图片嵌入

klp-ui/src/views/crm/contract/components/ContractExportDialog.vue

@@ -1,6 +1,6 @@
 <template>
   <el-dialog title="导出预览" :visible.sync="dialogVisible" width="95%" top="20px" append-to-body
-    :close-on-click-modal="false" @open="generatePreviewHtml">
+    :close-on-click-modal="false" @open="onDialogOpen">
     <div style="display: flex; gap: 16px; height: calc(100vh - 200px);">
       <div style="width: 200px; flex-shrink: 0; border: 1px solid #e4e7ed; border-radius: 4px; padding: 12px; overflow-y: auto;">
         <div style="font-weight: bold; margin-bottom: 10px; font-size: 14px;">产品表列配置</div>
@@ -13,8 +13,27 @@
         <div style="font-weight: bold; margin-bottom: 10px; font-size: 14px;">附加行配置</div>
         <el-checkbox v-model="selectAllRows" :indeterminate="rowIndeterminate" @change="handleSelectAllRows"
           style="margin-bottom: 8px;">全选</el-checkbox>
-        <div v-for="rowCfg in rowConfigs" :key="rowCfg.key" style="margin-bottom: 6px;">
+          <div v-for="rowCfg in rowConfigs" :key="rowCfg.key" style="margin-bottom: 6px;">
-          <el-checkbox v-model="rowCfg.checked" @change="onRowChange">{{ rowCfg.label }}</el-checkbox>
+            <el-checkbox v-model="rowCfg.checked" @change="onRowChange">{{ rowCfg.label }}</el-checkbox>
+          </div>
+        <el-divider />
+        <div style="font-weight: bold; margin-bottom: 10px; font-size: 14px;">附件图片配置</div>
+        <div v-if="attachmentLoading" style="text-align:center;padding:10px;color:#909399;font-size:12px;">
+          <i class="el-icon-loading"></i> 加载中...
+        </div>
+        <div v-else-if="attachmentConfigs.length === 0" style="color:#909399;font-size:12px;text-align:center;padding:10px;">
+          无图片附件
+        </div>
+        <div v-else>
+          <el-checkbox v-model="selectAllAttachments" :indeterminate="attachmentIndeterminate" @change="handleSelectAllAttachments"
+            style="margin-bottom: 8px;">全选</el-checkbox>
+          <div v-for="(att, index) in attachmentConfigs" :key="att.ossId" style="display:flex;align-items:center;margin-bottom:6px;gap:2px;">
+            <el-checkbox v-model="att.checked" @change="onAttachmentChange" style="flex:1;min-width:0;">
+              <span style="font-size:11px;display:inline-block;max-width:90px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:middle;" :title="att.originalName">{{ att.originalName }}</span>
+            </el-checkbox>
+            <el-button icon="el-icon-top" size="mini" circle :disabled="index === 0" @click="moveAttachmentUp(index)" style="padding:4px;"></el-button>
+            <el-button icon="el-icon-bottom" size="mini" circle :disabled="index === attachmentConfigs.length - 1" @click="moveAttachmentDown(index)" style="padding:4px;"></el-button>
+          </div>
         </div>
       </div>
       <div style="flex: 1; border: 1px solid #e4e7ed; border-radius: 4px; overflow: hidden; background: #f0f0f0;">
@@ -36,6 +55,7 @@ import {
 } from '@/utils/productContent';
 import html2canvas from 'html2canvas';
 import { jsPDF } from 'jspdf';
+import { listByIds } from '@/api/system/oss';
 
 const CHINESE_HEADING_REGEX = /^[零一二三四五六七八九十百千]+、/;
 
@@ -75,6 +95,10 @@ export default {
         { key: 'amountWordsRow', label: '大写金额行', checked: true },
         { key: 'remarkRow', label: '备注行', checked: true },
       ],
+      attachmentConfigs: [],
+      attachmentLoading: false,
+      selectAllAttachments: true,
+      attachmentIndeterminate: false,
     };
   },
   computed: {
@@ -254,6 +278,15 @@ export default {
       const totalTax = products.reduce((a, p) => a + (parseFloat(p.taxTotal) || 0), 0);
       const amountWords = productData.totalAmountInWords || convertToChinese(totalTax) || '零元整';
 
+      let imagePagesHtml = '';
+      this.attachmentConfigs.forEach(att => {
+        if (!att.checked) return;
+        imagePagesHtml += `
+  <div class="a4-page" style="display:flex;align-items:center;justify-content:center;background:#fff;">
+    <img src="${att.url}" style="max-width:90%;max-height:90%;object-fit:contain;" crossorigin="anonymous" />
+  </div>`;
+      });
+
       const fullHtml = `
 <!DOCTYPE html>
 <html>
@@ -283,8 +316,8 @@ export default {
    <div style="position:relative;margin:12px 0 8px 0;text-align:center;">
     <div style="font-size:22px;font-weight:bold;letter-spacing:6px;">产 品 销 售 合 同</div>
     <div style="position:absolute;right:0;top:50%;transform:translateY(-50%);font-size:11px;">合同编号：${row.contractCode || ''}</div>
-  </div>
+   </div>
-  <div class="info-row">
+   <div class="info-row">
     <div style="width:55%;">
       <div>供方（甲方）：${row.supplier || ''}</div>
       <div>需方（乙方）：${row.customer || ''}</div>
@@ -293,11 +326,11 @@ export default {
       <div>签订时间：${row.signTime ? this.parseTime(row.signTime, '{y}年{m}月{d}日') : ''}</div>
       <div>签订地点：${row.signLocation || ''}</div>
     </div>
-  </div>
+   </div>
-  <div class="section-title">一、产品内容</div>
+   <div class="section-title">一、产品内容</div>
-  ${productTableHtml}
+   ${productTableHtml}
-  ${contractContentHtml}
+   ${contractContentHtml}
-  <div class="sign-section" data-clause style="page-break-inside:avoid;">
+   <div class="sign-section" data-clause style="page-break-inside:avoid;">
     <div class="sign-row">
       <div class="col">
         <div>供方（甲方）：${row.supplier || ''}</div>
@@ -316,8 +349,9 @@ export default {
         <div>税号：${row.customerTaxNo || ''}</div>
       </div>
     </div>
+   </div>
   </div>
-</div>
+  ${imagePagesHtml}
 </body>
 </html>`;
 
@@ -418,6 +452,34 @@ export default {
           }
         }
 
+        for (let i = 0; i < this.attachmentConfigs.length; i++) {
+          const att = this.attachmentConfigs[i];
+          if (!att.checked) continue;
+
+          try {
+            const img = await this.loadImage(att.url);
+            pdf.addPage();
+
+            let drawW = img.width;
+            let drawH = img.height;
+            const scale = Math.min(printW / drawW, printH / drawH, 1);
+            drawW *= scale;
+            drawH *= scale;
+
+            const x = mg + (printW - drawW) / 2;
+            const y = mg + (printH - drawH) / 2;
+
+            const tmpCanvas = document.createElement('canvas');
+            tmpCanvas.width = img.width;
+            tmpCanvas.height = img.height;
+            tmpCanvas.getContext('2d').drawImage(img, 0, 0);
+
+            pdf.addImage(tmpCanvas.toDataURL('image/jpeg', 0.95), 'JPEG', x, y, drawW, drawH);
+          } catch (e) {
+            console.error('加载附件图片失败: ' + att.originalName, e);
+          }
+        }
+
         const filename = '合同_' + (this.row.contractCode || 'export') + '_' + new Date().getTime() + '.pdf';
         pdf.save(filename);
         this.$emit('update:visible', false);
@@ -428,6 +490,84 @@ export default {
         this.exporting = false;
       }
     },
+    async onDialogOpen() {
+      await this.fetchAttachments();
+      this.generatePreviewHtml();
+    },
+    async fetchAttachments() {
+      const row = this.row;
+      if (!row) return;
+
+      const fields = ['businessAnnex', 'techAnnex', 'productionSchedule', 'annexFiles'];
+      const allIds = [];
+      fields.forEach(field => {
+        if (row[field]) {
+          const ids = row[field].split(',').map(id => id.trim()).filter(id => id);
+          allIds.push(...ids);
+        }
+      });
+
+      if (allIds.length === 0) {
+        this.attachmentConfigs = [];
+        return;
+      }
+
+      this.attachmentLoading = true;
+      try {
+        const uniqueIds = [...new Set(allIds)];
+        const res = await listByIds(uniqueIds.join(','));
+        const files = res.data || [];
+        const imageSuffixes = ['jpg', 'jpeg', 'png', 'webp', 'bmp'];
+        this.attachmentConfigs = files
+          .filter(f => imageSuffixes.includes((f.fileSuffix || '').toLowerCase().replace(/^\./, '')))
+          .map(f => ({
+            ossId: f.ossId,
+            url: f.url,
+            originalName: f.originalName,
+            fileSuffix: f.fileSuffix,
+            checked: true
+          }));
+        this.selectAllAttachments = this.attachmentConfigs.length > 0;
+        this.attachmentIndeterminate = false;
+      } catch (e) {
+        console.error('获取附件列表失败', e);
+        this.attachmentConfigs = [];
+      } finally {
+        this.attachmentLoading = false;
+      }
+    },
+    moveAttachmentUp(index) {
+      if (index <= 0) return;
+      const arr = this.attachmentConfigs;
+      [arr[index - 1], arr[index]] = [arr[index], arr[index - 1]];
+      this.generatePreviewHtml();
+    },
+    moveAttachmentDown(index) {
+      if (index >= this.attachmentConfigs.length - 1) return;
+      const arr = this.attachmentConfigs;
+      [arr[index], arr[index + 1]] = [arr[index + 1], arr[index]];
+      this.generatePreviewHtml();
+    },
+    onAttachmentChange() {
+      const checkedCount = this.attachmentConfigs.filter(a => a.checked).length;
+      this.selectAllAttachments = checkedCount === this.attachmentConfigs.length;
+      this.attachmentIndeterminate = checkedCount > 0 && checkedCount < this.attachmentConfigs.length;
+      this.generatePreviewHtml();
+    },
+    handleSelectAllAttachments(val) {
+      this.attachmentConfigs.forEach(a => { a.checked = val; });
+      this.attachmentIndeterminate = false;
+      this.generatePreviewHtml();
+    },
+    loadImage(url) {
+      return new Promise((resolve, reject) => {
+        const img = new Image();
+        img.crossOrigin = 'anonymous';
+        img.onload = () => resolve(img);
+        img.onerror = reject;
+        img.src = url;
+      });
+    },
   }
 };
 </script>