feat(导出模板): 添加SQL预览功能并优化模板展示界面

server/api/v1/system/sys_export_template.go

@@ -50,6 +50,34 @@ type SysExportTemplateApi struct {
 
 var sysExportTemplateService = service.ServiceGroupApp.SystemServiceGroup.SysExportTemplateService
 
+// PreviewSQL 预览最终生成的SQL
+// @Tags     SysExportTemplate
+// @Summary  预览最终生成的SQL（不执行查询，仅返回SQL字符串）
+// @Security ApiKeyAuth
+// @accept   application/json
+// @Produce  application/json
+// @Param    templateID query string true  "导出模板ID"
+// @Param    params     query string false "查询参数编码字符串，参考 ExportExcel 组件"
+// @Success  200  {object}  response.Response{data=map[string]string} "获取成功"
+// @Router   /sysExportTemplate/previewSQL [get]
+func (sysExportTemplateApi *SysExportTemplateApi) PreviewSQL(c *gin.Context) {
+    templateID := c.Query("templateID")
+    if templateID == "" {
+        response.FailWithMessage("模板ID不能为空", c)
+        return
+    }
+
+    // 直接复用导出接口的参数组织方式：使用 URL Query，其中 params 为内部编码的查询字符串
+    queryParams := c.Request.URL.Query()
+
+    if sqlPreview, err := sysExportTemplateService.PreviewSQL(templateID, queryParams); err != nil {
+        global.GVA_LOG.Error("获取失败!", zap.Error(err))
+        response.FailWithMessage("获取失败", c)
+    } else {
+        response.OkWithData(gin.H{"sql": sqlPreview}, c)
+    }
+}
+
 // CreateSysExportTemplate 创建导出模板
 // @Tags SysExportTemplate
 // @Summary 创建导出模板

server/router/system/sys_export_template.go

@@ -26,6 +26,7 @@ func (s *SysExportTemplateRouter) InitSysExportTemplateRouter(Router *gin.Router
 		sysExportTemplateRouterWithoutRecord.GET("getSysExportTemplateList", exportTemplateApi.GetSysExportTemplateList) // 获取导出模板列表
 		sysExportTemplateRouterWithoutRecord.GET("exportExcel", exportTemplateApi.ExportExcel)                           // 获取导出token
 		sysExportTemplateRouterWithoutRecord.GET("exportTemplate", exportTemplateApi.ExportTemplate)                     // 导出表格模板
+        sysExportTemplateRouterWithoutRecord.GET("previewSQL", exportTemplateApi.PreviewSQL)                         // 预览SQL
 	}
 	{
 		sysExportTemplateRouterWithoutAuth.GET("exportExcelByToken", exportTemplateApi.ExportExcelByToken)       // 通过token导出表格

server/service/system/sys_export_template.go

@@ -213,6 +213,16 @@ func (sysExportTemplateService *SysExportTemplateService) ExportExcel(templateID
 				sql = fmt.Sprintf("%s %s (?)", condition.Column, condition.Operator)
 			}
 
+			if condition.Operator == "BETWEEN" {
+				sql = fmt.Sprintf("%s BETWEEN ? AND ?", condition.Column)
+				startValue := paramsValues.Get("start" + condition.From)
+				endValue := paramsValues.Get("end" + condition.From)
+				if startValue != "" && endValue != "" {
+					db = db.Where(sql, startValue, endValue)
+				}
+				continue
+			}
+
 			if value != "" {
 				if condition.Operator == "LIKE" {
 					value = "%" + value + "%"
@@ -317,14 +327,14 @@ func (sysExportTemplateService *SysExportTemplateService) ExportExcel(templateID
 		for j, colCell := range row {
 			cell := fmt.Sprintf("%s%d", getColumnName(j+1), i+1)
 
- 			var sErr error
+			var sErr error
- 			if v, err := strconv.ParseFloat(colCell, 64); err == nil {
+			if v, err := strconv.ParseFloat(colCell, 64); err == nil {
- 			    sErr = f.SetCellValue("Sheet1", cell, v)
+				sErr = f.SetCellValue("Sheet1", cell, v)
- 			} else if v, err := strconv.ParseInt(colCell, 10, 64); err == nil {
+			} else if v, err := strconv.ParseInt(colCell, 10, 64); err == nil {
- 			    sErr = f.SetCellValue("Sheet1", cell, v)
+				sErr = f.SetCellValue("Sheet1", cell, v)
- 			} else {
+			} else {
- 			    sErr = f.SetCellValue("Sheet1", cell, colCell)
+				sErr = f.SetCellValue("Sheet1", cell, colCell)
- 			}
+			}
 
 			if sErr != nil {
 				return nil, "", sErr
@@ -340,6 +350,185 @@ func (sysExportTemplateService *SysExportTemplateService) ExportExcel(templateID
 	return file, template.Name, nil
 }
 
+// PreviewSQL 预览最终生成的 SQL（不执行查询，仅返回 SQL 字符串）
+// Author [piexlmax](https://github.com/piexlmax) & [trae-ai]
+func (sysExportTemplateService *SysExportTemplateService) PreviewSQL(templateID string, values url.Values) (sqlPreview string, err error) {
+    // 解析 params（与导出逻辑保持一致）
+    var params = values.Get("params")
+    paramsValues, _ := url.ParseQuery(params)
+
+    // 加载模板
+    var template system.SysExportTemplate
+    err = global.GVA_DB.Preload("Conditions").Preload("JoinTemplate").First(&template, "template_id = ?", templateID).Error
+    if err != nil {
+        return "", err
+    }
+
+    // 解析模板列
+    var templateInfoMap = make(map[string]string)
+    columns, err := utils.GetJSONKeys(template.TemplateInfo)
+    if err != nil {
+        return "", err
+    }
+    err = json.Unmarshal([]byte(template.TemplateInfo), &templateInfoMap)
+    if err != nil {
+        return "", err
+    }
+    var selectKeyFmt []string
+    for _, key := range columns {
+        selectKeyFmt = append(selectKeyFmt, key)
+    }
+    selects := strings.Join(selectKeyFmt, ", ")
+
+    // 生成 FROM 与 JOIN 片段
+    var sb strings.Builder
+    sb.WriteString("SELECT ")
+    sb.WriteString(selects)
+    sb.WriteString(" FROM ")
+    sb.WriteString(template.TableName)
+
+    if len(template.JoinTemplate) > 0 {
+        for _, join := range template.JoinTemplate {
+            sb.WriteString(" ")
+            sb.WriteString(join.JOINS)
+            sb.WriteString(" ")
+            sb.WriteString(join.Table)
+            sb.WriteString(" ON ")
+            sb.WriteString(join.ON)
+        }
+    }
+
+    // WHERE 条件
+    var wheres []string
+
+    // 软删除过滤
+    filterDeleted := false
+    if paramsValues != nil {
+        filterParam := paramsValues.Get("filterDeleted")
+        if filterParam == "true" {
+            filterDeleted = true
+        }
+    }
+    if filterDeleted {
+        wheres = append(wheres, fmt.Sprintf("%s.deleted_at IS NULL", template.TableName))
+        if len(template.JoinTemplate) > 0 {
+            for _, join := range template.JoinTemplate {
+                if sysExportTemplateService.hasDeletedAtColumn(join.Table) {
+                    wheres = append(wheres, fmt.Sprintf("%s.deleted_at IS NULL", join.Table))
+                }
+            }
+        }
+    }
+
+    // 模板条件（保留与 ExportExcel 同步的解析规则）
+    if len(template.Conditions) > 0 {
+        for _, condition := range template.Conditions {
+            op := strings.ToUpper(strings.TrimSpace(condition.Operator))
+            col := strings.TrimSpace(condition.Column)
+
+            // 预览优先展示传入值，没有则展示占位符
+            val := ""
+            if paramsValues != nil {
+                val = paramsValues.Get(condition.From)
+            }
+
+            switch op {
+            case "BETWEEN":
+                startValue := ""
+                endValue := ""
+                if paramsValues != nil {
+                    startValue = paramsValues.Get("start" + condition.From)
+                    endValue = paramsValues.Get("end" + condition.From)
+                }
+                if startValue != "" && endValue != "" {
+                    wheres = append(wheres, fmt.Sprintf("%s BETWEEN '%s' AND '%s'", col, startValue, endValue))
+                } else {
+                    wheres = append(wheres, fmt.Sprintf("%s BETWEEN {start%s} AND {end%s}", col, condition.From, condition.From))
+                }
+            case "IN", "NOT IN":
+                if val != "" {
+                    // 逗号分隔值做简单展示
+                    parts := strings.Split(val, ",")
+                    for i := range parts { parts[i] = strings.TrimSpace(parts[i]) }
+                    wheres = append(wheres, fmt.Sprintf("%s %s ('%s')", col, op, strings.Join(parts, "','")))
+                } else {
+                    wheres = append(wheres, fmt.Sprintf("%s %s ({%s})", col, op, condition.From))
+                }
+            case "LIKE":
+                if val != "" {
+                    wheres = append(wheres, fmt.Sprintf("%s LIKE '%%%s%%'", col, val))
+                } else {
+                    wheres = append(wheres, fmt.Sprintf("%s LIKE {%%%s%%}", col, condition.From))
+                }
+            default:
+                if val != "" {
+                    wheres = append(wheres, fmt.Sprintf("%s %s '%s'", col, op, val))
+                } else {
+                    wheres = append(wheres, fmt.Sprintf("%s %s {%s}", col, op, condition.From))
+                }
+            }
+        }
+    }
+
+    if len(wheres) > 0 {
+        sb.WriteString(" WHERE ")
+        sb.WriteString(strings.Join(wheres, " AND "))
+    }
+
+    // 排序
+    order := ""
+    if paramsValues != nil {
+        order = paramsValues.Get("order")
+    }
+    if order == "" && template.Order != "" {
+        order = template.Order
+    }
+    if order != "" {
+        sb.WriteString(" ORDER BY ")
+        sb.WriteString(order)
+    }
+
+    // limit/offset（如果传入或默认值为0，则不生成）
+    limitStr := ""
+    offsetStr := ""
+    if paramsValues != nil {
+        limitStr = paramsValues.Get("limit")
+        offsetStr = paramsValues.Get("offset")
+    }
+
+    // 处理模板默认limit（仅当非0时）
+    if limitStr == "" && template.Limit != nil && *template.Limit != 0 {
+        limitStr = strconv.Itoa(*template.Limit)
+    }
+
+    // 解析为数值，用于判断是否生成
+    limitInt := 0
+    offsetInt := 0
+    if limitStr != "" {
+        if v, e := strconv.Atoi(limitStr); e == nil { limitInt = v }
+    }
+    if offsetStr != "" {
+        if v, e := strconv.Atoi(offsetStr); e == nil { offsetInt = v }
+    }
+
+    if limitInt > 0 {
+        sb.WriteString(" LIMIT ")
+        sb.WriteString(strconv.Itoa(limitInt))
+        if offsetInt > 0 {
+            sb.WriteString(" OFFSET ")
+            sb.WriteString(strconv.Itoa(offsetInt))
+        }
+    } else {
+        // 当limit未设置或为0时，仅当offset>0才生成OFFSET
+        if offsetInt > 0 {
+            sb.WriteString(" OFFSET ")
+            sb.WriteString(strconv.Itoa(offsetInt))
+        }
+    }
+
+    return sb.String(), nil
+}
+
 // ExportTemplate 导出Excel模板
 // Author [piexlmax](https://github.com/piexlmax)
 func (sysExportTemplateService *SysExportTemplateService) ExportTemplate(templateID string) (file *bytes.Buffer, name string, err error) {

server/source/system/api.go

@@ -175,6 +175,7 @@ func (i *initApi) InitializeData(ctx context.Context) (context.Context, error) {
 		{ApiGroup: "导出模板", Method: "GET", Path: "/sysExportTemplate/getSysExportTemplateList", Description: "获取导出模板列表"},
 		{ApiGroup: "导出模板", Method: "GET", Path: "/sysExportTemplate/exportExcel", Description: "导出Excel"},
 		{ApiGroup: "导出模板", Method: "GET", Path: "/sysExportTemplate/exportTemplate", Description: "下载模板"},
+		{ApiGroup: "导出模板", Method: "GET", Path: "/sysExportTemplate/previewSQL", Description: "预览SQL"},
 		{ApiGroup: "导出模板", Method: "POST", Path: "/sysExportTemplate/importExcel", Description: "导入Excel"},
 
 		{ApiGroup: "公告", Method: "POST", Path: "/info/createInfo", Description: "新建公告"},

server/source/system/casbin.go

@@ -176,6 +176,7 @@ func (i *initCasbin) InitializeData(ctx context.Context) (context.Context, error
 		{Ptype: "p", V0: "888", V1: "/sysExportTemplate/getSysExportTemplateList", V2: "GET"},
 		{Ptype: "p", V0: "888", V1: "/sysExportTemplate/exportExcel", V2: "GET"},
 		{Ptype: "p", V0: "888", V1: "/sysExportTemplate/exportTemplate", V2: "GET"},
+		{Ptype: "p", V0: "888", V1: "/sysExportTemplate/previewSQL", V2: "GET"},
 		{Ptype: "p", V0: "888", V1: "/sysExportTemplate/importExcel", V2: "POST"},
 
 		{Ptype: "p", V0: "888", V1: "/info/createInfo", V2: "POST"},

web/src/api/exportTemplate.js

@@ -126,3 +126,20 @@ export const exportTemplate = (params) => {
     params
   })
 }
+
+// PreviewSQL 预览最终生成的SQL
+// @Tags SysExportTemplate
+// @Summary 预览最终生成的SQL
+// @Security ApiKeyAuth
+// @accept application/json
+// @Produce application/json
+// @Router /sysExportTemplate/previewSQL [get]
+// @Param templateID query string true  "导出模板ID"
+// @Param params     query string false "查询参数编码字符串，参考 ExportExcel 组件"
+export const previewSQL = (params) => {
+  return service({
+    url: '/sysExportTemplate/previewSQL',
+    method: 'get',
+    params
+  })
+}

web/src/pathInfo.json

@@ -73,6 +73,7 @@
   "/src/view/systemTools/index.vue": "System",
   "/src/view/systemTools/installPlugin/index.vue": "Index",
   "/src/view/systemTools/pubPlug/pubPlug.vue": "PubPlug",
+  "/src/view/systemTools/sysError/sysError.vue": "SysError",
   "/src/view/systemTools/system/system.vue": "Config",
   "/src/view/systemTools/version/version.vue": "SysVersion",
   "/src/plugin/announcement/form/info.vue": "InfoForm",

web/src/view/systemTools/exportTemplate/exportTemplate.vue

@@ -139,7 +139,7 @@
               icon="edit-pen"
               class="table-button"
               @click="showCode(scope.row)"
-              >代码</el-button
+              >代码和SQL预览</el-button
             >
             <el-button
               type="primary"
@@ -401,28 +401,79 @@
       </el-form>
     </el-drawer>
 
+    <!-- 合并：代码模板 + SQL预览 抽屉 -->
     <el-drawer
-      v-model="codeVisible"
+      v-model="drawerVisible"
-      size="60%"
+      size="70%"
-      :before-close="closeDialog"
+      :title="'模板与预览'"
-      :title="type === 'create' ? '添加' : '修改'"
+      :show-close="true"
-      :show-close="false"
       destroy-on-close
     >
       <template #header>
         <div class="flex justify-between items-center">
-          <span class="text-lg">模板</span>
+          <span class="text-lg">模板与预览</span>
           <div>
-            <el-button type="primary" @click="closeDialog">确 定</el-button>
+            <el-button @click="drawerVisible = false">关 闭</el-button>
+            <el-button v-if="activeTab === 'sql'" type="primary" @click="runPreview">生 成</el-button>
           </div>
         </div>
       </template>
-      <v-ace-editor
+      <el-tabs v-model="activeTab" type="border-card">
-        v-model:value="webCode"
+        <el-tab-pane label="代码模板" name="code">
-        lang="vue"
+          <v-ace-editor
-        theme="github_dark"
+            v-model:value="webCode"
-        class="h-full"
+            lang="vue"
-      />
+            theme="github_dark"
+            class="w-full h-96"
+            :options="{ showPrintMargin: false, fontSize: 14 }"
+          />
+        </el-tab-pane>
+        <el-tab-pane label="SQL预览" name="sql">
+          <div class="flex flex-col gap-4">
+            <div class="w-full">
+              <el-form :model="previewForm" label-width="120px">
+                <el-form-item label="过滤已删除">
+                  <el-switch v-model="previewForm.filterDeleted" />
+                </el-form-item>
+                <el-form-item label="默认排序">
+                  <el-input v-model="previewForm.order" placeholder="例如: id desc" />
+                </el-form-item>
+                <el-form-item label="限制条数">
+                  <el-input-number v-model="previewForm.limit" :min="0" />
+                </el-form-item>
+                <el-form-item label="偏移量">
+                  <el-input-number v-model="previewForm.offset" :min="0" />
+                </el-form-item>
+
+                <el-divider content-position="left">查询条件</el-divider>
+                <div v-if="previewConditions.length === 0" class="text-gray">该模板暂无条件</div>
+                <template v-for="(cond, idx) in previewConditions" :key="idx">
+                  <el-form-item :label="cond.column + ' ' + cond.operator">
+                    <template v-if="cond.operator === 'BETWEEN'">
+                      <div class="flex gap-2 w-full">
+                        <el-input v-model="previewForm['start' + cond.from]" placeholder="开始值: start{{cond.from}}" />
+                        <el-input v-model="previewForm['end' + cond.from]" placeholder="结束值: end{{cond.from}}" />
+                      </div>
+                    </template>
+                    <template v-else>
+                      <el-input v-model="previewForm[cond.from]" :placeholder="'变量: ' + cond.from" />
+                    </template>
+                  </el-form-item>
+                </template>
+              </el-form>
+            </div>
+            <div class="w-full">
+              <v-ace-editor
+                v-model:value="previewSQLCode"
+                lang="sql"
+                theme="github_dark"
+                class="w-full h-96"
+                :options="aceOptions"
+              />
+            </div>
+          </div>
+        </el-tab-pane>
+      </el-tabs>
     </el-drawer>
   </div>
 </template>
@@ -436,6 +487,7 @@
     findSysExportTemplate,
     getSysExportTemplateList
   } from '@/api/exportTemplate.js'
+  import { previewSQL } from '@/api/exportTemplate.js'
 
   // 全量引入格式化工具 请按需保留
   import { formatDate } from '@/utils/format'
@@ -448,6 +500,7 @@
 
   import 'ace-builds/src-noconflict/mode-vue'
   import 'ace-builds/src-noconflict/theme-github_dark'
+  import 'ace-builds/src-noconflict/mode-sql'
 
   defineOptions({
     name: 'ExportTemplate'
@@ -903,7 +956,8 @@ JOINS模式下不支持导入
       getTableData()
     }
   }
-  const codeVisible = ref(false)
+  const drawerVisible = ref(false)
+  const activeTab = ref('code')
   // 弹窗控制标记
   const dialogFormVisible = ref(false)
 
@@ -911,7 +965,56 @@ JOINS模式下不支持导入
 
   const showCode = (row) => {
     webCode.value = getCode(row.templateID)
-    codeVisible.value = true
+    activeTab.value = 'code'
+    drawerVisible.value = true
+  }
+
+  // 预览 SQL
+  const previewForm = ref({ filterDeleted: true, order: '', limit: 0, offset: 0 })
+  const previewSQLCode = ref('')
+  const previewTemplate = ref(null)
+  const previewConditions = ref([])
+  const aceOptions = { wrap: true, showPrintMargin: false, fontSize: 14 }
+
+  const openPreview = async (row) => {
+    // 获取模板完整信息以展示条件输入项
+    const res = await findSysExportTemplate({ ID: row.ID })
+    if (res.code === 0) {
+      previewTemplate.value = res.data.resysExportTemplate
+      previewConditions.value = (previewTemplate.value.conditions || []).map((c) => ({
+        from: c.from,
+        column: c.column,
+        operator: c.operator
+      }))
+      // 预填默认的排序与限制
+      previewForm.value.order = previewTemplate.value.order || ''
+      previewForm.value.limit = previewTemplate.value.limit || 0
+      previewForm.value.offset = 0
+      previewSQLCode.value = ''
+      activeTab.value = 'sql'
+      drawerVisible.value = true
+    }
+  }
+
+  const runPreview = async () => {
+    if (!previewTemplate.value) return
+    // 组装 params，与导出组件保持一致
+    const paramsCopy = JSON.parse(JSON.stringify(previewForm.value))
+    // 将布尔与数值等按照导出组件规则编码
+    if (paramsCopy.filterDeleted) paramsCopy.filterDeleted = 'true'
+    const entries = Object.entries(paramsCopy).filter(([key, v]) => {
+      if (v === '' || v === null || v === undefined) return false
+      if ((key === 'limit' || key === 'offset') && Number(v) === 0) return false
+      return true
+    })
+    const params = entries
+      .map(([key, value]) => `${encodeURIComponent(key)}=${encodeURIComponent(value)}`)
+      .join('&')
+
+    const res = await previewSQL({ templateID: previewTemplate.value.templateID, params })
+    if (res.code === 0) {
+      previewSQLCode.value = res.data.sql || ''
+    }
   }
 
   // 打开弹窗
@@ -922,7 +1025,6 @@ JOINS模式下不支持导入
 
   // 关闭弹窗
   const closeDialog = () => {
-    codeVisible.value = false
     dialogFormVisible.value = false
     formData.value = {
       name: '',