feat：增加导出接口

app/basic/api/base.go

@@ -4,8 +4,12 @@ import (
 	"SciencesServer/config"
 	"SciencesServer/serve/logger"
 	"SciencesServer/utils"
+	"bytes"
 	"errors"
+	"fmt"
+	"github.com/tealeg/xlsx"
 	"net/http"
+	"time"
 
 	"github.com/gin-gonic/gin"
 	"github.com/gin-gonic/gin/binding"
@@ -61,6 +65,21 @@ func Bind(req interface{}) ApiHandle {
 	}
 }
 
+// APIDownloadExcel 下载Excel文件
+func APIDownloadExcel(fileName string, file *xlsx.File) ApiHandle {
+	return func(c *gin.Context) interface{} {
+		c.Writer.Header().Set("Content-Type", "application/octet-stream")
+		disposition := fmt.Sprintf("attachment; filename=\"%s-%s.xlsx\"", fileName,
+			time.Now().Format("2006-01-02"))
+		c.Writer.Header().Set("Content-Disposition", disposition)
+		buffer := new(bytes.Buffer)
+		_ = file.Write(buffer)
+		content := bytes.NewReader(buffer.Bytes())
+		http.ServeContent(c.Writer, c.Request, fileName, time.Now(), content)
+		return nil
+	}
+}
+
 func APISuccess(data ...interface{}) ApiHandle {
 	return func(c *gin.Context) interface{} {
 		resp := &response{