目的
步骤：
1.整合jar包：有的使用的是3以上的版本，这个要看自己的springBoot版本
<!-- 阿里云对象存储服务 --><dependency> <groupId>com.aliyun.oss</groupId> <artifactId>aliyun-sdk-oss</artifactId> <version>2.8.3</version></dependency>
2.配置oss
3.工具类：
import com.aliyun.oss.OSSClient;import com.aliyun.oss.model.ObjectMetadata;import org.apache.commons.lang3.StringUtils;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Value;import org.springframework.stereotype.Component;import java.io.IOException;import java.io.InputStream;/** * @author zhangtonghao * @create 2022-08-30 16:26 */@Componentpublic class OSSUtil { private static Logger logger = LoggerFactory.getLogger(OSSUtil.class); // private OSSClient ossClient; @Value("${oss.endpoint.ext}") private String endpoint; @Value("${oss.endpoint.internal}") private String internalEndpoint; @Value("${oss.accessKeyId}") private String accessKeyId; @Value("${oss.accessKeySecret}") private String accessKeySecret; @Value("${oss.bucketName}") private String bucketName; /** * 上传文件到阿里云,并生成url * * @param filedir (key)文件名(不包括后缀) * @param in 文件字节流 * @return String 生成的文件url */ public String uploadToAliyun(String filedir, InputStream in, String fileName, boolean isRandomName) { String suffix = fileName.substring(fileName.lastIndexOf(".") + 1); if (isRandomName) { fileName = UUIDGenerator.generateCommonUUID() + "." + suffix; } logger.debug("------------>文件名称为: " + fileName); OSSClient ossClient = new OSSClient(internalEndpoint, accessKeyId, accessKeySecret); String url = null; try { // 创建上传Object的Metadata ObjectMetadata objectMetadata = new ObjectMetadata(); objectMetadata.setContentLength(in.available()); objectMetadata.setCacheControl("no-cache");// 设置Cache-Control请求头，表示用户指定的HTTP请求/回复链的缓存行为:不经过本地缓存 objectMetadata.setHeader("Pragma", "no-cache");// 设置页面不缓存 objectMetadata.setContentType(getcontentType(suffix)); objectMetadata.setContentDisposition("inline;filename=" + fileName); // 上传文件 ossClient.putObject(bucketName, filedir + "/" + fileName, in, objectMetadata); url = buildUrl(filedir + "/" + fileName); } catch (IOException e) { logger.error("error", e); } finally { ossClient.shutdown(); try { if (in != null) { in.close(); } } catch (IOException e) { logger.error("error", e); } } return url; } private String buildUrl(String fileDir) { StringBuffer url = new StringBuffer(); if (org.apache.commons.lang3.StringUtils.isEmpty(bucketName)) { logger.error("bucketName为空"); return null; } if (org.apache.commons.lang3.StringUtils.isEmpty(endpoint)) { logger.error("endpoint为空"); return null; } if (StringUtils.isEmpty(endpoint)) { logger.error("上传文件目录为空"); return null; } url.append("https://").append(bucketName).append(".").append(endpoint).append("/").append(fileDir); return url.toString(); } /** * 删除图片 * * @param key */ public void deletePicture(String key) { OSSClient ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret); ossClient.deleteObject(bucketName, key); ossClient.shutdown(); } /** * Description: 判断OSS服务文件上传时文件的contentType * * @param suffix 文件后缀 * @return String HTTP Content-type */ public String getcontentType(String suffix) { if (suffix.equalsIgnoreCase("bmp")) { return "image/bmp"; } else if (suffix.equalsIgnoreCase("gif")) { return "image/gif"; } else if (suffix.equalsIgnoreCase("jpeg") || suffix.equalsIgnoreCase("jpg")) { return "image/jpeg"; } else if (suffix.equalsIgnoreCase("png")) { return "image/png"; } else if (suffix.equalsIgnoreCase("html")) { return "text/html"; } else if (suffix.equalsIgnoreCase("txt")) { return "text/plain"; } else if (suffix.equalsIgnoreCase("vsd")) { return "application/vnd.visio"; } else if (suffix.equalsIgnoreCase("pptx") || suffix.equalsIgnoreCase("ppt")) { return "application/vnd.ms-powerpoint"; } else if (suffix.equalsIgnoreCase("docx") || suffix.equalsIgnoreCase("doc")) { return "application/msword"; } else if (suffix.equalsIgnoreCase("xls") || suffix.equalsIgnoreCase("xlsx")) { return "application/vnd.ms-excel"; } else if (suffix.equalsIgnoreCase("xml")) { return "text/xml"; } else if (suffix.equalsIgnoreCase("mp3")) { return "audio/mp3"; } else if (suffix.equalsIgnoreCase("amr")) { return "audio/amr"; } else if (suffix.equalsIgnoreCase("pdf")) { return "application/pdf"; } else { return "text/plain"; } }}
4.使用：
//注入oss工具类@Autowiredprivate OSSUtil ossUtil;/** * 授权文件上传 * * @param file * @return */@PostMapping("/upload")public Result<String> upload(@RequestParam("file") MultipartFile file) { if (file.isEmpty()) { return Result.error(ErrorCodeEnum.REQUEST_API_ERROR.getCode(), ErrorCodeEnum.REQUEST_API_ERROR.getMsg()); } String fileName = file.getOriginalFilename(); String url = null; try { url = ossUtil.uploadToAliyun("card/img", new ByteArrayInputStream(file.getBytes()), fileName, true); } catch (IOException e) { logger.error("上传产品图片失败", e); return Result.error(ErrorCodeEnum.REQUEST_API_ERROR.getCode(), ErrorCodeEnum.REQUEST_API_ERROR.getMsg()); } return Result.success(url);}
5.注意事项：下面有的会出现，但是我并没有
springboot会默认加载org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration这个类，
而DataSourceAutoConfiguration类使用了@Configuration注解向spring注入了dataSource bean，又因为项目（oss模块）中并没有关于dataSource相关的配置信息，所以当spring创建dataSource bean时因缺少相关的信息就会报错。
解决办法：
方法1、在@SpringBootApplication注解上加上exclude，解除自动加载DataSourceAutoConfiguration
@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
6.延伸
一般的文章到上面就结束了，不过我这里还想加些实践的。
oss常用工具：oss-browser
相应的配置信息在配置中取即可，要注意的路径：oss://+bucketName
业务：一般我们上传的时候bucketName都是给好的，像一些什么没有bucketName还需要创建的其实都是多此一举，没有bucket直接找到运维同事创建一个即可。而在公司操作中大部分都是自己创建文件夹名称：比如传参中用户ID+设备id+文件属性+文件类型，其实就和redis创建key一样，网上的不要照抄，自己思考就好，下面例子可以供参考。
//生成文件keypublic String buildFileKey(String folder, String origFileName, Integer audioType, boolean isUseOrigFileName) { if (origFileName == null) { return null; } if (CommonConstants.AudioType.STAFF.equals(audioType) || CommonConstants.AudioType.CUSTOMER.equals(audioType)) { folder = audioFolder + "/" + folder; } else if (CommonConstants.AudioType.INSPECTION.equals(audioType)) { folder = inspectionFolder + "/" + folder; } else if (CommonConstants.AudioType.MATERIAL.equals(audioType)) { folder = materialFolder + "/" + folder; } String filePath = DateUtil.getNowDateString(); if (isUseOrigFileName) { String fileKey = folder + "/" + filePath + "/" + origFileName; logger.debug("file key: " + fileKey); return fileKey; } int index = origFileName.lastIndexOf("."); String fileExtName = index >= 0 ? origFileName.substring(index) : ""; String fileName = java.util.UUID.randomUUID().toString().replaceAll("-", ""); String fileKey = folder + "/" + filePath + "/" + fileName + fileExtName; return fileKey;}
/** * 创建文件名称 * @param audioRecordVO * @return */private String buildFileKey(AudioRecordVO audioRecordVO) { StringBuffer fileName = new StringBuffer(); fileName.append(audioRecordVO.getStaffId()); fileName.append("-"); fileName.append(audioRecordVO.getAudioType()); fileName.append("-"); fileName.append(audioRecordVO.getDeviceId()); fileName.append("-"); fileName.append(DateUtil.formatTimeToString(audioRecordVO.getFileStartTime(), DateUtil.TIME_FORMAT_NO_SPACE)); fileName.append("."); fileName.append(audioRecordVO.getFileType()); audioRecordVO.setFileName(aliyunStorageService.buildFileKey(appKey, fileName.toString(),audioRecordVO .getAudioType(), true)); return audioRecordVO.getFileName();}
创作不易，如果这篇文章对你有用，请点个赞谢谢(ω)！
