springboot(7)——上传图片/文件到七牛云存储

版权声明：本文出自mqy1023的博客，转载必须注明出处。 https://blog.csdn.net/mqy1023/article/details/80188932

一、七牛云快速入门

快速入门

• 1、注册账号
• 2、创建存储空间, 命名xyz对应下面springboot 应用配置bucket
• 3、创建成功后进入该空间，获取该空间的测试域名,对应下面springboot 应用配置中的path
• 4、点击“个人面板—密钥管理”，获取 accessKey 和 secretKey

二、application.yml中配置参数

# 七牛云配置
# bucket是创建的存储空间名
# path对应存储空间的访问域名
qiniu:
  accessKey: zHy3Im3Yjxxxxxx
  secretKey: LQR4mszxxxxxxxx
  bucket: xyz
  path: http://xxx.bkt.clouddn.com

三、读取application.yml中七牛云配置工具类ConstantQiniu.java

@Data
@Component
@ConfigurationProperties(prefix = "qiniu")
public class ConstantQiniu {

    private String accessKey;

    private String secretKey;

    private String bucket;

    private String path;
}

四、pom.xml 加入七牛云

<dependency>
  <groupId>com.qiniu</groupId>
  <artifactId>qiniu-java-sdk</artifactId>
  <version>[7.2.0, 7.2.99]</version>
</dependency>

五、XyzController 控制类

@Controller
@RequestMapping("/admin/xyz")
public class XyzController{

    @Autowired
    private ConstantQiniu constantQiniu;

    /**
     * 上传文件到七牛云存储
     * @param multipartFile
     * @return
     * @throws IOException
     */
    @PostMapping("/qiniu")
    @ResponseBody
    public ResultVO uploadImgQiniu(@RequestParam("file") MultipartFile multipartFile) throws IOException {

        FileInputStream inputStream = (FileInputStream) multipartFile.getInputStream();
        String path = uploadQNImg(inputStream, KeyUtil.genUniqueKey()); // KeyUtil.genUniqueKey()生成图片的随机名
        return ResultVOUtil.success(path);
    }

    /**
     * 将图片上传到七牛云
     */
    private String uploadQNImg(FileInputStream file, String key) {
        // 构造一个带指定Zone对象的配置类
        Configuration cfg = new Configuration(Zone.zone2());
        // 其他参数参考类注释
        UploadManager uploadManager = new UploadManager(cfg);
        // 生成上传凭证，然后准备上传

        try {
            Auth auth = Auth.create(constantQiniu.getAccessKey(), constantQiniu.getSecretKey());
            String upToken = auth.uploadToken(constantQiniu.getBucket());
            try {
                Response response = uploadManager.put(file, key, upToken, null, null);
                // 解析上传成功的结果
                DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);

                String returnPath = constantQiniu.getPath() + "/" + putRet.key;
                return returnPath;
            } catch (QiniuException ex) {
                Response r = ex.response;
                System.err.println(r.toString());
                try {
                    System.err.println(r.bodyString());
                } catch (QiniuException ex2) {
                    //ignore
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return "";
    }

}

参考官网文档Java sdk -> 文件上传 部分

六、layui前端部分

// 点击thumbBox样式的标签完成图片上传
upload.render({
    elem: '.thumbBox',
    url: '/admin/xyz/qiniu',
    multiple: false,
    before: function(obj){

    },
    done: function(res){
        debugger
        //上传完毕
    },
    error: function(index, upload){
        debugger
        //上传错误
    }
});

图片/文件上传 - layui.upload