java 七牛云图片上传以及链接加密

た入场券 2023-01-05 05:10 253阅读 0赞

# java 七牛云图片上传以及链接加密 #

这里简单说明java代码，对于七牛云的对象存储开通以及鉴权不贴图，可以上七牛云文档中查看

1.  七牛云通过字节上传图片
    
        /** * 字节流上传图片 * * @param uploadBytes * @return 外键地址 */
        public String upLoadImage(byte[] uploadBytes) { 
            Configuration cfg = new Configuration();
            UploadManager uploadManager = new UploadManager(cfg);
            ByteArrayInputStream byteInputStream = new ByteArrayInputStream(uploadBytes);
            Auth auth = Auth.create(accessKey, secretKey);
            String upToken = auth.uploadToken(空间名称);
            String imgUrl = null;
            try { 
                Response response = uploadManager.put(byteInputStream, null, upToken, null, null);
                //解析上传成功的结果
                DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
                // prefixImage 是链接的前缀域名，通过自己的域名解析
                imgUrl = prefixImage + putRet.hash;
            } catch (QiniuException ex) { 
                Response r = ex.response;
                System.err.println(r.toString());
                try { 
                    System.err.println(r.bodyString());
                } catch (QiniuException ex2) { 
                    //ignore
                }
            }
            return imgUrl;
        }
2.  使用网络图片地址上传到自己的空间
    
        /** * 网络地址上传图片 * * @param imageUrl 网络图片地址 * @return */
        public String upLoadImage(String imageUrl) { 
            Configuration cfg = new Configuration();
            Auth auth = Auth.create(accessKey, secretKey);
            BucketManager bucketManager = new BucketManager(auth, cfg);
            String imgUrl = null;
            try { 
                FetchRet fetchRet = bucketManager.fetch(imageUrl, 空间地址, null);
                 // prefixImage 是链接的前缀域名，通过自己的域名解析
                imgUrl = prefixImage + fetchRet.hash;
            } catch (QiniuException ex) { 
                Response r = ex.response;
                System.err.println(r.toString());
                try { 
                    System.err.println(r.bodyString());
                } catch (QiniuException ex2) { 
                    //ignore
                }
            }
            return imgUrl;
        }
3.  对七牛云返回的图片地址进行加密，带token访问时长
    
        /** * 加密图片URL * @param url 图片地址 * @param expires 过期时间 * @return */
        public String privateUrl(String url, long expires) { 
            Auth auth = Auth.create(accessKey, secretKey);
            return auth.privateDownloadUrl(url, expires);
        }