七牛云如何上传图片
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2022-04-08 18:49:44
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七牛云上传图片的方法:
1,注册七牛云账号,
2,创建一个存储空间bucket,创建的时候回送一个临时的测试域名,这个等上传工具类要用到 ,有效期30天,
3,写java工具类
public class upLoadFile { //...生成上传凭证,然后准备上传 这个是在注册的账户里面有个人中心那里的密钥管理 1 public static String accessKey = “h9r4Vz72dIAEL2PLSYXFEv39GmUOsw99y7wkbQQW”; public static String secretKey = “BWhiWbB7D-lWkI2bP2c6wBYRbak3MzmcUeoyTaNv”; // public static String bucket = “vehicle-picture”; //这个是创建的存储空间的名字 public static String bucket = “image-a”; //这个就是测试域名 创建的时候一般都会赠送一个测试域名 // public static String domainOfBucket = “http://qn.vwaiter.cn”; public static String domainOfBucket = “pn7fhqast.bkt.clouddn.com”; public static void main(String[] args) { getUrl(“FpMjfsJwwMDYC-IXjMIhWm9xiYt4”); } /** * 上传图片 * @param file * @return */ public static String uploadFile(MultipartFile file) { //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); //默认不指定key的情况下,以文件内容的hash值作为文件名 String fileName=null; String key = null; try { Logger.getLogger("start>>>>>>>>>>").info("图片上传"); byte[] uploadBytes=file.getBytes(); ByteArrayInputStream byteInputStream=new ByteArrayInputStream(uploadBytes); Auth auth = Auth.create(accessKey, secretKey); String upToken = auth.uploadToken(bucket); Response response = uploadManager.put(byteInputStream,key,upToken,null, null); DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class); //key为空时默认使用hash值作为key System.out.println(putRet.key); System.out.println(putRet.hash); fileName=putRet.hash; Logger.getLogger("end>>>>>>>>>>").info("图片上传"); }catch (QiniuException ex) { Response r = ex.response; System.err.println(r.toString()); } catch (IOException e) { e.printStackTrace(); } return fileName; } /** * 上传图片 * @param bytes 要上传图片的字节流 * @return */ public static String uploadFile(byte[] bytes) { //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); //默认不指定key的情况下,以文件内容的hash值作为文件名 String fileName=null; String key = null; try { Logger.getLogger("start>>>>>>>>>>").info("图片上传"); byte[] uploadBytes=bytes; ByteArrayInputStream byteInputStream=new ByteArrayInputStream(uploadBytes); Auth auth = Auth.create(accessKey, secretKey); String upToken = auth.uploadToken(bucket); Response response = uploadManager.put(byteInputStream,key,upToken,null, null); DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class); //key为空时默认使用hash值作为key System.out.println(putRet.key); System.out.println(putRet.hash); fileName=putRet.hash; Logger.getLogger("end>>>>>>>>>>").info("图片上传"); }catch (QiniuException ex) { Response r = ex.response; System.err.println(r.toString()); } catch (IOException e) { e.printStackTrace(); } return fileName; } /** * 字节数组上传 * @return */ public static String upLoadByte(byte[] data) { Configuration cfg = new Configuration(Zone.zone0()); UploadManager uploadManager = new UploadManager(cfg); String fileName=null; String key = null; try { byte[] uploadBytes = "hello qiniu cloud".getBytes("utf-8"); Auth auth = Auth.create(accessKey, secretKey); String upToken = auth.uploadToken(bucket); try { Response response = uploadManager.put(data, key, upToken); //解析上传成功的结果 DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class); System.out.println(putRet.key); System.out.println(putRet.hash); fileName=putRet.hash; } catch (QiniuException ex) { Response r = ex.response; System.err.println(r.toString()); try { System.err.println(r.bodyString()); } catch (QiniuException ex2) { //ignore } } } catch (UnsupportedEncodingException ex) { } return fileName; } /** * 生成加签访问url */ public static String getUrl(String key) { String finalUrl=null; String fileName = key; String encodedFileName = null; try { encodedFileName = URLEncoder.encode(fileName, "utf-8"); String publicUrl = String.format("%s/%s", domainOfBucket, encodedFileName); Auth auth = Auth.create(accessKey, secretKey); long expireInSeconds = 10800;//1小时,可以自定义链接过期时间 finalUrl = auth.privateDownloadUrl(publicUrl, expireInSeconds); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } System.out.println(finalUrl); return finalUrl; } /** * 生成加签访问url */ public static String getUrl1(String key) { String finalUrl=null; String fileName = key; String encodedFileName = null; try { encodedFileName = URLEncoder.encode(fileName, "utf-8"); String publicUrl = String.format("%s/%s", domainOfBucket, encodedFileName); Auth auth = Auth.create(accessKey, secretKey); long expireInSeconds = 10800;//1小时,可以自定义链接过期时间 finalUrl = auth.privateDownloadUrl(publicUrl, expireInSeconds); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } System.out.println(finalUrl); return finalUrl; } //删除上传到七牛云的图片 public static boolean deleteOnQn(String key) throws Exception { //密钥配置 try { Auth auth = Auth.create(accessKey,secretKey); Configuration configuration = new Configuration(Zone.autoZone()); BucketManager bucketManager = new BucketManager(auth,configuration); bucketManager.delete(bucket,key); } catch (QiniuException e) { e.printStackTrace(); throw e; } return true; }
4,需要的依赖架
<dependency> <groupId>com.qiniu</groupId> <artifactId>qiniu-java-sdk</artifactId> <version>7.2.11</version> <scope>compile</scope> </dependency> <dependency> <groupId>com.squareup.okhttp3</groupId> <artifactId>okhttp</artifactId> <version>3.3.1</version> <scope>compile</scope> </dependency> <dependency> <groupId>com.google.code.gson</groupId> <artifactId>gson</artifactId> <version>2.6.2</version> <scope>compile</scope> </dependency> <dependency> <groupId>com.qiniu</groupId> <artifactId>happy-dns-java</artifactId> <version>0.1.4</version> <scope>compile</scope> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency> <!--七牛云图片服务器相关依赖结束-->
5,xml里面需要文件上传处理
<!--文件上传处理器 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="maxUploadSize" value="5000000"/> <property name="defaultEncoding" value="UTF-8"/> </bean>
6,写上传接口的controller和service以及serviceimpl,
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