SpringBoot上传图片文件到七牛云-编程知识

SpringBoot上传图片文件到七牛云

准备工作

maven

pom.xml添加七牛云的sdk依赖

        <dependency><groupId>com.qiniu</groupId><artifactId>qiniu-java-sdk</artifactId><version>7.2.27</version></dependency>

配置项

七牛云上传必要的配置有：accessKey、secretKey、bucket 其中accessKey、secretKey在该网址可查看

portal.qiniu.com/user/key

一、新建存储空间

bucket为你的存储空间名，如下：

实现

application.yml配置

upload:qiniu:domain: 填你的域名access-key: 你的accesskeysecret-key: 你的secretKeybucket: 你的存储空间名，我这里为nnx12138

可以看到我的七牛云上传配置中有domain这项配置，这个配置是七牛云buket的存储域名，在内容管理下，主要用于上传文件成功后把文件访问路径返还回去。

但是这个域名是限时30天使用的，所以你最好绑定一个新的域名。

七牛云上传接口和类

@Component
@ConfigurationProperties(prefix = "upload.qiniu")
@Data
public class QiNiuInitConfig {private String domain;/*** 从下面这个地址中获取accessKey和secretKey* https://portal.qiniu.com/user/key*/private String accessKey;private String secretKey;/*** 存储空间名*/private String bucket;}

package top.lixin.service.impl;import com.qiniu.storage.BucketManager;
import com.qiniu.storage.model.FileInfo;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;
import top.lixin.config.properties.QiNiuInitConfig;
import top.lixin.config.properties.UploadProperties;
import top.lixin.service.UploadDocumentService;
import com.qiniu.http.Response;
import com.qiniu.storage.Configuration;
import com.qiniu.storage.Region;
import com.qiniu.storage.UploadManager;
import com.qiniu.util.Auth;import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.io.InputStream;
import java.security.MessageDigest;
import java.util.UUID;/*** @program: nnxFirstTestBlog* @description: 上传文件到七牛云* @author:* @create: 2023-12-13 14:38**/
@Service
public class QiNiuUploadDocumentServiceImpl implements UploadDocumentService {private QiNiuInitConfig properties;//构造一个带指定Region对象的配置类private Configuration cfg = new Configuration(Region.region2());private UploadManager uploadManager = new UploadManager(cfg);public QiNiuUploadDocumentServiceImpl(QiNiuInitConfig properties) {this.properties = properties;}@Overridepublic String uploadImage(MultipartFile imageFile, HttpServletRequest request) {String originalFilename = imageFile.getOriginalFilename();// 文件后缀String suffix = originalFilename.substring(originalFilename.lastIndexOf("."));String fileKey = null;try {fileKey = calculateMD5(imageFile.getInputStream()) + suffix;} catch (IOException e) {throw new RuntimeException("文件转md5失败");}// 计算文件的MD5哈希值String fileMD5;try {fileMD5 = calculateMD5(imageFile.getInputStream());} catch (IOException e) {throw new RuntimeException(e);}if (isFileExists(properties.getAccessKey(), properties.getSecretKey(), properties.getBucket(), fileMD5)) {return properties.getDomain() + fileKey;}try {Auth auth = Auth.create(properties.getAccessKey(), properties.getSecretKey());String token = auth.uploadToken(properties.getBucket());Response response = uploadManager.put(imageFile.getInputStream(), fileKey, token, null, null);return properties.getDomain() + fileKey;} catch (IOException e) {e.printStackTrace();}return "error";}/*** 判断文件是否存在* @param accessKey* @param secretKey* @param bucket* @param fileKey* @return boolean*/public boolean isFileExists(String accessKey, String secretKey, String bucket, String fileKey) {Auth auth = Auth.create(accessKey, secretKey);Configuration configuration = new Configuration();BucketManager bucketManager = new BucketManager(auth, configuration);try {FileInfo fileInfo = bucketManager.stat(bucket, fileKey);return fileInfo != null;} catch (Exception e) {e.printStackTrace();}return false;}/*** 获取md5* @param inputStream* @return {@link String}*/public String calculateMD5(InputStream inputStream) {try {MessageDigest md = MessageDigest.getInstance("MD5");byte[] buffer = new byte[8192];int bytesRead;while ((bytesRead = inputStream.read(buffer)) != -1) {md.update(buffer, 0, bytesRead);}byte[] digest = md.digest();StringBuilder sb = new StringBuilder();for (byte b : digest) {sb.append(String.format("%02x", b));}return sb.toString();} catch (Exception e) {e.printStackTrace();}return null;}
}

Region配置，这里代表空间的存取区域，因为我的存储空间的区域为华南。所以为Region.region2(),查看自己的存储区域可在空间概览的最下方查看到，这里就不截图了，图片占位太大。
Region对应的设置：