SpringBoot后端上传图片至七牛云

目录

前言

一、前端

二、后端

2.1 引七牛云依赖

2.2 新建一个类ImageUpdateController

总结

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前言

本篇文章讲的是从后端上传图片至七牛云，前端发送图片到后端，后端直接可以上传至七牛云

一、前端

 //将图片发给后端，在后端上传至七牛云
post("/upload/toQiniu", imgForm).then((res) => {
console.log(res);
imgUrl = res.message;//返回url
console.log(imgUrl);
});

二、后端

2.1 引七牛云依赖

在pom.xml中引入依赖

    com.qiniu
    qiniu-java-sdk
    [7.2.0,7.2.99]

2.2 新建一个类ImageUpdateController

package com.example.spidercommunity.common;

import com.example.spidercommunity.common.Result;
import com.qiniu.common.Zone;
import com.qiniu.http.Response;
import com.qiniu.storage.Configuration;
import com.qiniu.storage.UploadManager;
import com.qiniu.util.Auth;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import java.io.InputStream;

@RestController
@CrossOrigin
@RequestMapping("/upload")
public class ImageUploadController {
    private String accessKey = "...";

    private String secretKey = "...";
//上面两个key是七牛云的私钥公钥，可以在个人中心查到

    private String bucket = "...";//bucket名，即空间名称

    @RequestMapping("/token/get")
    public Result getToken() {

        // 调用七牛云的接口获取token
        Auth auth = Auth.create(accessKey,secretKey);
        String upToken = auth.uploadToken(bucket);

        return Result.success(upToken);
    }


    //后端将图片上传至七牛云
    @RequestMapping(value = "/toQiniu",method = RequestMethod.POST)
    public Result uploadQiNiu(@RequestParam("image") MultipartFile myFileName,@RequestParam("token") String  token,@RequestParam("fileKey") String fileKey) throws Exception{

        InputStream stream = myFileName.getInputStream();
        //构造一个带指定Zone对象的配置类
        Configuration cfg = new Configuration(Zone.zone0());
        //...其他参数参考类注释
        UploadManager uploadManager = new UploadManager(cfg);
        Response response = uploadManager.put(stream,fileKey ,token,null, null);
//        //解析上传成功的结果
//        DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
        //图片路径
        String url = "http://xxx.com/"+fileKey;//七牛云域名
        System.out.println(url);
        return Result.success(url);
    }
}

总结

在后端上传图片至七牛云非常方便，且通用性强，适合任何场景下的图片上传存储。个人记录，希望能帮到泥！