Go Gin 实现文件点击下载 设置头文件

• 接口

  GET请求，非restful风格；请求参数url：文件的路径包括文件名称类型

  Ps:http://ip:port/common/downloadFile?url=urlEncode(’filePath’);

  **urlEncode为url编码方法**;
  
  **filePath为文件路径**
  

  router.GET("/common/downloadFile",service.DownloadFileCommonService)
  

• service

  package service
  
  import (
    "github.com/gin-gonic/gin"
    "net/http"
    "os"
    "studyGo/common"
  )
  //下载文件
  func DownloadFileCommonService(c *gin.Context) {
    url := c.Query("url")
    if common.IsEmpty(url) {
        c.String(http.StatusOK, "找不到文件")
        return
    }
    fileInfo, erByStatFile := os.Stat(url)
    if erByStatFile != nil {
        c.String(http.StatusOK, "文件打开失败", gin.H{"error": erByStatFile.Error()})
        return
    }
    c.Header("Content-Type", "application/octet-stream")
    //强制浏览器下载
    c.Header("Content-Disposition", "attachment; filename="+name)
    //浏览器下载或预览
    c.Header("Content-Disposition", "inline;filename="+name)
    c.Header("Content-Transfer-Encoding", "binary")
    c.File(url)
  

}