增加表格导出多数据库支持

server/model/system/sys_export_template.go

@@ -8,6 +8,7 @@ import (
 // 导出模板 结构体  SysExportTemplate
 type SysExportTemplate struct {
 	global.GVA_MODEL
+	DBName       string      `json:"dbName" form:"dbName" gorm:"column:db_name;comment:数据库名称;"`               //数据库名称
 	Name         string      `json:"name" form:"name" gorm:"column:name;comment:模板名称;"`                       //模板名称
 	TableName    string      `json:"tableName" form:"tableName" gorm:"column:table_name;comment:表名称;"`        //表名称
 	TemplateID   string      `json:"templateID" form:"templateID" gorm:"column:template_id;comment:模板标识;"`    //模板标识

server/service/system/sys_export_template.go

@@ -142,7 +142,11 @@ func (sysExportTemplateService *SysExportTemplateService) ExportExcel(templateID
 	}
 	selects := strings.Join(columns, ", ")
 	var tableMap []map[string]interface{}
-	db := global.GVA_DB.Select(selects).Table(template.TableName)
+	db := global.GVA_DB
+	if template.DBName != "" {
+		db = global.MustGetGlobalDBByDBName(template.DBName)
+	}
+	db = db.Select(selects).Table(template.TableName)
 
 	if len(template.Conditions) > 0 {
 		for _, condition := range template.Conditions {
@@ -297,7 +301,13 @@ func (sysExportTemplateService *SysExportTemplateService) ImportExcel(templateID
 	for key, title := range templateInfoMap {
 		titleKeyMap[title] = key
 	}
-	return global.GVA_DB.Transaction(func(tx *gorm.DB) error {
+
+	db := global.GVA_DB
+	if template.DBName != "" {
+		db = global.MustGetGlobalDBByDBName(template.DBName)
+	}
+
+	return db.Transaction(func(tx *gorm.DB) error {
 		excelTitle := rows[0]
 		values := rows[1:]
 		for _, row := range values {