上传实现流程

前端代码

1. el-input修改成el-upload

   <el-upload
   ref="upload"
   :limit="1"
   accept=".jpg, .png"
   :action="upload.url"
   :headers="upload.headers"
   :file-list="upload.fileList"
   :on-progress="handleFileUploadProgress"
   :on-success="handleFileSuccess"
   :auto-upload="false">
   <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
   <el-button style="margin-left: 10px;" size="small" type="success" :loading="upload.isUploading" @click="submitUpload">上传到服务器</el-button>
   <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
   </el-upload>

2. 引入获取token

   import { getToken } from "@/utils/auth";

3. data中添加属性

   // 上传参数
   upload: {
   // 是否禁用上传
   isUploading: false,
   // 设置上传的请求头部
   headers: { Authorization: "Bearer " + getToken() },
   // 上传的地址
   url: process.env.VUE_APP_BASE_API + "/common/upload",
   // 上传的文件列表
   fileList: []
   },

4. 新增和修改操作对应处理fileList参数

handleAdd() {
    ...
  this.upload.fileList = [];
}

handleUpdate(row) {
    ...
  this.upload.fileList = [{ name: this.form.fileName, url: this.form.filePath }];
}

5. 添加对应事件

// 文件提交处理
submitUpload() {
  this.$refs.upload.submit();
},
// 文件上传中处理
handleFileUploadProgress(event, file, fileList) {
  this.upload.isUploading = true;
},
// 文件上传成功处理
handleFileSuccess(response, file, fileList) {
  this.upload.isUploading = false;
  this.form.filePath = response.url;
  this.msgSuccess(response.msg);
}

后端代码

系统已经封装了上传附件及图片的service 文件路径：
./app/service/admin/upload_service/upload.go
后台controller中直接调用该service可参考：
./app/controller/admin/upload.go

例如ckeditor编辑器内上传附件：

后端处理代码：

func (c *Upload) CkEditorUp(r *ghttp.Request) {
    upFile := r.GetUploadFile("upload")
    fType := gstr.ToLower(r.GetString("type"))
    //调用service来处理
    var info *upload_service.FileInfo
    var err error
    if fType == "images" {
        info, err = upload_service.UpImg(upFile)
    } else if fType == "files" {
        info, err = upload_service.UpFile(upFile)
    }
    if err != nil {
        r.Response.WriteJson(g.Map{"error": g.Map{"message": "上传失败，" + err.Error(), "number": 105}})
    } else {
        parseInfo, _ := url.Parse(r.GetUrl())
        r.Response.WriteJson(g.Map{"fileName": info.FileName, "uploaded": 1, "url": parseInfo.Scheme + "://" + parseInfo.Host + "/" + info.FileUrl})
    }
}

上传成功后返回json数据

{
    "fileName":"u=1972974717,2347847659&fm=26&gp=0.jpg",
    "uploaded":1,
    "url":"/pub_upload/2020-09-14/c5mrymslkozkjl8blf.jpg"
}

fileName 为上传的文件名
uploaded 上传文件数量
url 上传成功后的文件访问地址

表单中直接上传附件的例子如下：

代码例子：

//单图片上传
func (c *Upload) UpImg(r *ghttp.Request) {
    upFile := r.GetUploadFile("file")
    info, err := upload_service.UpImg(upFile)
    if err != nil {
        response.FailJson(true, r, "上传失败，"+err.Error())
    }
    res := g.Map{
        "fileInfo": info,
    }
    response.SusJson(true, r, "上传成功", res)
}

上传结果返回：

{
    "code": 0,
    "data": {
        "fileInfo": {
            "fileName": "u=3491837859,3174573417&fm=26&gp=0.jpg",
            "fileSize": 17774,
            "fileUrl": "pub_upload/2020-09-14/c5msh0vg7yd06l2lnu.jpg",
            "fileType": "image/jpeg"
        }
    },
    "msg": "上传成功"
}

//或者失败返回

{
    "code": -1,
    "data": null,
    "msg": "上传失败，上传文件类型错误，只能包含后缀为：jpg,jpeg,gif,npm,png的文件。"
}

//多图片上传
func (c *Upload) UpImgs(r *ghttp.Request) {
    upFiles := r.GetUploadFiles("file")
    infos, err := upload_service.UpImgs(upFiles)
    if err != nil {
        response.FailJson(true, r, "上传失败，"+err.Error())
    }
    res := g.Map{
        "fileInfos": infos,
    }
    response.SusJson(true, r, "上传成功", res)
}

上传结果返回：

{
    "code": 0,
    "data": {
        "fileInfos": [
            {
                "fileName": "u=3491837859,3174573417&fm=26&gp=0.jpg",
                "fileSize": 17774,
                "fileUrl": "pub_upload/2020-09-14/c5msi9tvmybonx4bme.jpg",
                "fileType": "image/jpeg"
            },
            {
                "fileName": "u=1972974717,2347847659&fm=26&gp=0.jpg",
                "fileSize": 27937,
                "fileUrl": "pub_upload/2020-09-14/c5msi9tyltusbmvdp6.jpg",
                "fileType": "image/jpeg"
            }
        ]
    },
    "msg": "上传成功"
}

注意：上传参数时可以配置的，在系统后台 >> 系统配置 >> 参数管理 进行附件类型，大小配置。