前端如何上传图片到七牛云

From: https://www.jianshu.com/p/7520e0bee777

前端如何上传图片到七牛云

流程： 生成token => token和图片作为new FromData() 参数 再上传

token

const accessKey = 'TSlScX_akS5TIpsXlkq*****7Efk-ZaZeg4ZWtta'; const secretKey = 'X-MGLySWVrWFIQKTn***WDIBvb3ni4Zm3qwZNKxk'; const bucket = 'deluntiyun'; 

如何获取这三个参数

image.png

 

accessKey 就是AK
secretKey 就是SK

 

image.png

 

bucket 就是你的空间名字

我的token是koa后台请求回来的，附上代码 node的话qiniu模块
非node的话自行查询Node.js SDK

let qiniu = require('qiniu'); // 需要加载qiniu模块的 const accessKey = 'TSlScX_akS5TIpsXlkqHH2gy7Efk-ZaZeg4ZWtta'; const secretKey = 'X-MGLySWVrWFIQKTn87HWDIBvb3ni4Zm3qwZNKxk'; const bucket = 'deluntiyun'; router.post('/token', async(ctx, next)=> { let mac = new qiniu.auth.digest.Mac(accessKey, secretKey); let options = { scope: bucket, expires: 3600 * 24 }; let putPolicy = new qiniu.rs.PutPolicy(options); let uploadToken= putPolicy.uploadToken(mac); if (uploadToken) { ctx.body = Code('re_success', uploadToken) } else { ctx.body = Code('re_error') } }) 

token也是在前端来生成的， 加载qiniu模块，利用其方法就可以生成token

上传到七牛云 - React

upload组件 ice Upload 上传组件

// 用来删除图片的 onUploadChange(info) { if (info.file.status == 'removed') { this.setState({ fileList: [], values: Object.assign({ avatar: '' }) }) } } <Col xxs="16" s="10" l="6"> <IceFormBinder name="avatar" required message="必填"> <ImageUpload listType="picture-card" limit={1} action={this.state.qiniu.url} fileList={this.state.fileList} accept="image/png, image/jpg, image/jpeg, image/gif, image/bmp" data={this.state.qiniuToken} locale={{ image: { cancel: '取消上传', addPhoto: '上传图片', }, }} formatter={(res)=>{ // 七牛云返回的数据 { hash:"FjIEDVNzhgmsU7cOBtkAXV7VuhvJ"，key:"FjIEDVNzhgmsU7cOBtkAXV7VuhvJ"} let imgURL = this.state.qiniu.qiniuPath + "/" + res.key; this.setState({ fileList: [{ status: "done", downloadURL: imgURL, fileURL: imgURL, imgURL: imgURL }], value: Object.assign(this.state.value, { avatar: imgURL }) }) }} onChange= {this.onUploadChange.bind(this)} /> </IceFormBinder> </Col> 

附上网友大神的ice组件代码，虽然不是用七牛云的

52A911F6-D3A8-4cb0-A041-202644CCA761.png

上传到七牛云 - Vue

ui框架 element-ui el-upload

koa2 请求到七牛云的token

let qiniu = require('qiniu'); // 需要加载qiniu模块的 const router = require('koa-router')() router.prefix('/api/admin/qiniu') let config = { "AK":"TSlScX_akS5TIpsXlkqHH2gy7Efk-ZaZeg4ZWtta", "SK":"X-MGLySWVrWFIQKTn87HWDIBvb3ni4Zm3qwZNKxk", "Bucket":"mobile-phone-shell" } router.post('/token', async(ctx, next)=> { let mac = new qiniu.auth.digest.Mac(config.AK, config.SK); let code = '1',msg = '', data = {}; let options = { scope: config.Bucket, expires: 3600 * 24 }; let putPolicy = new qiniu.rs.PutPolicy(options); let uploadToken= putPolicy.uploadToken(mac); if (uploadToken) { code = '0'; data.uploadToken = uploadToken; ctx.body = {code, data, msg} } else { ctx.body = {code, data, msg} } }) module.exports = router 

前端代码

<el-upload
<el-upload
                      style='position: relative;top: 10px;height: 120px;'
                      :file-list='fileList'
                      class="avatar-uploader"
                      :limit='1'
                      :action="uploadUrl"
                      accept="image/jpeg,image/gif,image/png,image/bmp"
                      list-type="picture-card"
                      :data='uploadData'
                      :on-success="handleAvatarSuccess"
                      :on-error="uploadError"
                      :before-upload="beforeAvatarUpload"
                      :on-preview="doLookImg"
                      :on-remove="doDeleteImg">
                      <i class="el-icon-plus"></i>
                    </el-upload>
<script>
  export default {
    data() {
      return {
          uploadUrl: 'http://up-z0.qiniu.com',
          uploadData: {key:'',token:''},
          formAdd: { brandLogo: '' }
      }
    },
    mounted() {
        getQiniuToken({}).then((res)=> {
          console.log(res);
          if (res.code === '0') {
            this.uploadData.token = res.data.uploadToken
          }
        })
  },
    methods: {
      doDeleteImg(file, fileList) {
        console.log('删除成功',file, fileList)
        let logoAry;
        let key;
        if (this.editState) {
          logoAry = this.mainInfo.brandLogo.split('/');
        } else {
          logoAry = this.formAdd.brandLogo.split('/');
        }
        key = logoAry[logoAry.length - 1];
        deleteQiniuImg({key}).then(res=> {
          if (res.code === '0') {
            if (this.editState) {
              this.mainInfo.brandLogo = '';
            } else {
              this.formAdd.brandLogo = '';
            }
          } else {
            this.$message.error(res.msg)
          }
        })
      },
      doLookImg() {
        this.uploadDialogVisible = true;
        this.uploadDialogImg = this.editState ? this.mainInfo.brandLogo : this.formAdd.brandLogo;
      },
      handleAvatarSuccess(res, file, fileList) {
        console.log('上传成功', res,file, fileList)
        let hash = res.hash;
        let key = res.key;
        if (this.editState) {
          this.mainInfo.brandLogo = qiniuConfig.qiniuPath + '/' + key;
        } else {
          this.formAdd.brandLogo = qiniuConfig.qiniuPath + '/' + key;
        }
      },
      beforeAvatarUpload(file) {
        console.log(file, 'beforeAvatarUpload')
        // var observable = qiniu.upload(file, key, token, putExtra, config)
        const isPNG = file.type === "image/png";
        const isJPEG = file.type === "image/jpeg";
        const isJPG = file.type === "image/jpg";
        const isLt2M = file.size / 1024 / 1024 < 2;

        if (!isPNG && !isJPEG && !isJPG) {
          this.$message.error("上传头像图片只能是 jpg、png、jpeg 格式!");
          return false;
        }
        if (!isLt2M) {
          this.$message.error("上传头像图片大小不能超过 2MB!");
          return false;
        }
        this.uploadData.key = `upload_pic_${new Date().getTime()}_${file.name}`;
      },
      uploadError(err, file, fileList) {
        this.$message({
          message: "上传出错，请重试！",
          type: "error",
          center: true
        });
      },
    }
}
</script>