springboot整合阿里云oss上传的方法示例

1. 注册登录

输入网址：https://www.aliyun.com/product/oss

如果没有账号点击免费注册，然后登录。

2.开通以及配置

点击立即开通

进入管理控制台

第一次使用会出现引导，按引导点击“我知道了”，然后点击创建Bucket。

如果没有存储包或流量包点击购买。

点击确定，返回主页面，出现该页面，点击我知道了

将EndPoint记录下来，方便后期添加到我们项目的配置文件中

创建 AccessKeyID 和 AccessKeySecret

点击创建Access key，第一次需要短信验证，验证成功后弹出

保留Access key 以及 AccessKeySecret 信息

1. 进入我们springboot的项目中，导入oss相关依赖

<dependency> <groupId>com.aliyun.oss</groupId> <artifactId>aliyun-sdk-oss</artifactId> <version>2.8.3</version></dependency>

2. 再配置文件中添加相关信息

oss.aliyun.accessKeyId= #oss.aliyun.accessKeySecret= #oss.aliyun.bucketName= mutest-qcby-ossoss.aliyun.endpoint= #oss.aliyun.pubFlag= falseoss.aliyun.expiration= 100 oss.aliyun.sslNmae= #内网使用，不必须

3. 书写获取配置信息的java文件，建立properties包（导入依赖，否则无法识别这个包）

<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-configuration-processor</artifactId> <optional>true</optional> </dependency>

OssProerties.java

import com.mbyte.easy.oss.OssUtil;import lombok.Data;import org.springframework.boot.context.properties.ConfigurationProperties;import org.springframework.boot.context.properties.EnableConfigurationProperties;import org.springframework.context.annotation.PropertySource;import org.springframework.stereotype.Component;import javax.annotation.PostConstruct;/** * @ClassName: OssProerties * @Description: 阿里云 对象云存储配置类 * @Author: zte * @Date: 2019-02-14 09:37 * @Version 1.0 **/@Data@Component@ConfigurationProperties(prefix = 'oss.aliyun')public class OssProerties { private String accessKeyId; private String accessKeySecret; private String bucketName; private String endpoint; private String bucket; private boolean pubFlag; private String sslNmae; @PostConstruct public void init(){ //Oss工具类配置初始化 OssUtil.initConfig(this); } //过期时间 private int expiration; public String getAccessKeyId() { return accessKeyId; } public OssProerties setAccessKeyId(String accessKeyId) { this.accessKeyId = accessKeyId; return this; } public String getAccessKeySecret() { return accessKeySecret; } public OssProerties setAccessKeySecret(String accessKeySecret) { this.accessKeySecret = accessKeySecret; return this; } public String getBucketName() { return bucketName; } public OssProerties setBucketName(String bucketName) { this.bucketName = bucketName; return this; } public String getEndpoint() { return endpoint; } public OssProerties setEndpoint(String endpoint) { this.endpoint = endpoint; return this; } public String getBucket() { return bucket; } public OssProerties setBucket(String bucket) { this.bucket = bucket; return this; } public boolean isPubFlag() { return pubFlag; } public void setPubFlag(boolean pubFlag) { this.pubFlag = pubFlag; } public int getExpiration() { return expiration; } public OssProerties setExpiration(int expiration) { this.expiration = expiration; return this; } @Override public String toString() { return 'OssPro{' + 'accessKeyId=’' + accessKeyId + ’’’ + ', accessKeySecret=’' + accessKeySecret + ’’’ + ', bucketName=’' + bucketName + ’’’ + ', endpoint=’' + endpoint + ’’’ + ', bucket=’' + bucket + ’’’ + ', expiration=' + expiration + ’}’; }}

4. 整合oss,书写相关java文件

1. 文件常量java文件 FileConstants.java

package com.mbyte.easy.oss;import org.springframework.util.ClassUtils;import java.io.File;/** * @ClassName: FileConstants * @Description: 文件常量 * @Author: lxt * @Date: 2019-02-19 09:59 * @Version 1.0 **/public class FileConstants { /** * 文件存储临时文件夹 */ public final static String TEMP_ROOT = 'temp'; /** * 下载暂存目录 */ public final static String DOWNLOAD = TEMP_ROOT+ File.separator+'download'; /** * 后缀名相关常量(包含【.】) */ public final static String SUFFIX_ZIP = '.zip'; /** * png图片后缀 */ public final static String SUFFIX_png = '.png'; /** * 二维码暂存路径 eg：微信支付二维码 */ public static final String QRCODE = 'qrcode'; public static final String QRCODE_PATH = ClassUtils.getDefaultClassLoader().getResource('static').getPath()+File.separator+QRCODE; /** * 文件的后缀名 */ public static final String FILE_TYPE_AVI = 'avi'; public static final String FILE_TYPE_CSV = 'csv'; public static final String FILE_TYPE_DOC = 'doc'; public static final String FILE_TYPE_DOCX = 'docx'; public static final String FILE_TYPE_MP3 = 'mp3'; public static final String FILE_TYPE_PDF = 'pdf'; public static final String FILE_TYPE_PPT = 'ppt'; public static final String FILE_TYPE_PPTX = 'pptx'; public static final String FILE_TYPE_RAR = 'rar'; public static final String FILE_TYPE_TXT = 'txt'; public static final String FILE_TYPE_XLS = 'xls'; public static final String FILE_TYPE_ZIP = 'zip'; /** * 文件对应图片的oss路径 */ public static final String FILE_TYPE_AVI_ROUTE = 'https://hmett.oss-cn-beijing.aliyuncs.com/20191205092751242.U27AJS.png?Expires=4731182871&OSSAccessKeyId=LTAI4FqUE3bJs9FK7Sj65JnM&Signature=0S4nIClHiI11Iw2SOnLoKuwpiDc%3D'; public static final String FILE_TYPE_CSV_ROUTE = 'https://hmett.oss-cn-beijing.aliyuncs.com/20191205092859378.A0J8R6.png?Expires=4731182939&OSSAccessKeyId=LTAI4FqUE3bJs9FK7Sj65JnM&Signature=McS77A%2BMOkmSjBfZziIxLeR5QCM%3D'; public static final String FILE_TYPE_DOC_ROUTE = 'https://hmett.oss-cn-beijing.aliyuncs.com/20191205092908602.QHFWCO.png?Expires=4731182949&OSSAccessKeyId=LTAI4FqUE3bJs9FK7Sj65JnM&Signature=%2Fr9V%2FP8nmfYKVbANe2fl1qR%2FFwg%3D'; public static final String FILE_TYPE_DOCX_ROUTE = 'https://hmett.oss-cn-beijing.aliyuncs.com/20191205092908602.QHFWCO.png?Expires=4731182949&OSSAccessKeyId=LTAI4FqUE3bJs9FK7Sj65JnM&Signature=%2Fr9V%2FP8nmfYKVbANe2fl1qR%2FFwg%3D'; public static final String FILE_TYPE_MP3_ROUTE = 'https://hmett.oss-cn-beijing.aliyuncs.com/20191205092920411.L5CBAF.png?Expires=4731182960&OSSAccessKeyId=LTAI4FqUE3bJs9FK7Sj65JnM&Signature=wPz2ylPAg%2FpBqyIz4LztacVfRwo%3D'; public static final String FILE_TYPE_PDF_ROUTE = 'https://hmett.oss-cn-beijing.aliyuncs.com/20191205092930146.CU0CAD.png?Expires=4731182970&OSSAccessKeyId=LTAI4FqUE3bJs9FK7Sj65JnM&Signature=Nwl6%2BkZmosARipe%2BoVJT3FdRLqM%3D'; public static final String FILE_TYPE_PPT_ROUTE = 'https://hmett.oss-cn-beijing.aliyuncs.com/20191205092939365.XHOX9G.png?Expires=4731182979&OSSAccessKeyId=LTAI4FqUE3bJs9FK7Sj65JnM&Signature=3CDxl0W5ymVXe2XLnxLn1ewc1gU%3D'; public static final String FILE_TYPE_PPTX_ROUTE = 'https://hmett.oss-cn-beijing.aliyuncs.com/20191205092939365.XHOX9G.png?Expires=4731182979&OSSAccessKeyId=LTAI4FqUE3bJs9FK7Sj65JnM&Signature=3CDxl0W5ymVXe2XLnxLn1ewc1gU%3D'; public static final String FILE_TYPE_RAR_ROUTE = 'https://hmett.oss-cn-beijing.aliyuncs.com/20191205092949684.9OW7L9.png?Expires=4731182989&OSSAccessKeyId=LTAI4FqUE3bJs9FK7Sj65JnM&Signature=RCKarsekmPG3CXI5D6MLpJ4ocj4%3D'; public static final String FILE_TYPE_TXT_ROUTE = 'https://hmett.oss-cn-beijing.aliyuncs.com/20191205092959887.TF1K0N.png?Expires=4731183000&OSSAccessKeyId=LTAI4FqUE3bJs9FK7Sj65JnM&Signature=9l44IQ0FZdQMcRq92PPOXlBKEFk%3D'; public static final String FILE_TYPE_XLS_ROUTE = 'https://hmett.oss-cn-beijing.aliyuncs.com/20191205093007830.M6O08Z.png?Expires=4731183008&OSSAccessKeyId=LTAI4FqUE3bJs9FK7Sj65JnM&Signature=GeNmvgi7TGMq3uk9AG0%2BJRWRFY0%3D'; public static final String FILE_TYPE_ZIP_ROUTE = 'https://hmett.oss-cn-beijing.aliyuncs.com/20191205093017998.Q39L45.png?Expires=4731183018&OSSAccessKeyId=LTAI4FqUE3bJs9FK7Sj65JnM&Signature=djzJ7rTgH8LvCeaMfWGXUAQIpJE%3D';}

2. 文件操作工具类 OssFileUtils.java

import com.mbyte.easy.common.web.AjaxResult;import com.mbyte.easy.oss.OssUtil;import lombok.extern.slf4j.Slf4j;import org.apache.commons.lang3.StringUtils;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.web.multipart.MultipartFile;import java.io.File;import java.io.IOException;import java.io.InputStream;import java.net.URL;import java.nio.file.Files;import java.nio.file.Path;import java.nio.file.Paths;import java.nio.file.StandardCopyOption;import java.util.*;/** * @ClassName: DesignFileUtils * @Description: 文件操作工具类 * @Author: lxt * @Date: 2019-02-15 14:50 * @Version 1.0 **/@Slf4jpublic class OssFileUtils { /** * @Title: uploadSingleFile * @Description: 单个文件上传 * @Author: zte * @param: file * @Date: 2019-02-15 14:56 * @return: java.lang.String 成功返回 文件路径，失败返回null * @throws: */ public static String uploadSingleFile(MultipartFile file){ if(file == null){ log.error('单文件上传失败，文件为空'); return null; } try { return OssUtil.upload(OssUtil.generateKey(file.getOriginalFilename()),file.getBytes()); } catch (Exception e) { log.error('单文件上传异常【'+file+'】',e); } return null; } /** * @Title: uploadSingleFile * @Description: 单个文件上传 * @Author: lxt * @param: file * @Date: 2019-02-15 14:56 * @return: java.lang.String 成功返回 文件路径，失败返回null * @throws: */ public static String uploadSingleFile(File file){ if(file == null){ log.error('单文件上传失败，文件为空'); return null; } try { return OssUtil.upload(OssUtil.generateKey(file.getName()),file); } catch (Exception e) { log.error('单文件上传异常【'+file+'】',e); } return null; } /** * @Title: uploadMultipartFile * @Description: 多文件文件上传 * @Author: zte * @param: files * @Date: 2019-02-18 13:08 * @return: java.util.List<java.lang.String> 成功返回 文件路径集合，失败返回null * @throws: */ public static List<String> uploadMultipartFile(List<MultipartFile> fileList){ List<String> filePaths = new ArrayList<>(); Optional.ofNullable(fileList).ifPresent(fl->{ fl.stream().forEach(f->{ try {filePaths.add(OssUtil.upload(OssUtil.generateKey(f.getOriginalFilename()),f.getBytes())); } catch (IOException e) {log.error('多文件上传异常【'+f+'】',e); } }); } ); return filePaths; } /** * @Title: downloadSingleFileByOss * @Description: 下载阿里云文件到本地 * @Author: lxt * @param: url 阿里云链接 * @param: filePath 下载目录 * @Date: 2019-02-18 13:13 * @return: java.io.File * @throws: */ public static File downloadSingleFile(String url,String filePath){ try { return OssUtil.download2File(url,filePath); } catch (Exception e) { log.error('单文件下载异常【'+url+'】',e); } return null; } /** * @Title: downloadMultipartFileByOss * @Description: 批量下载阿里云文件到本地 * @Author: zte * @param: urlList 阿里云链接集合 * @param: dir 下载目录 * @Date: 2019-02-18 13:19 * @return: java.util.List<java.io.File> * @throws: */ public static List<File> downloadMultipartFile(List<String> urlList,String dir){ List<File> files = new ArrayList<>(); Optional.ofNullable(urlList).ifPresent(fl->{ fl.stream().forEach(f->files.add(OssUtil.download2Dir(f,dir))); } ); return files; } /** * @Title: downloadMultipartFileByOssWithZip * @Description: 批量下载，打包成一个zip包 * @Author: zte * @param: urlList * @param: zipPath * @Date: 2019-02-18 15:41 * @return: java.io.File * @throws: */// public static File downloadMultipartFileWithZip(List<String> urlList,String zipName){// try {// //压缩路径不存在，先创建// File zipDirFile = new File(FileConstants.DOWNLOAD);// if(!zipDirFile.exists()){// zipDirFile.mkdirs();// }// if(StringUtils.isNoneBlank(zipName) && !isFileBySuffix(zipName,FileConstants.SUFFIX_ZIP)){// //文件名称存在 但后缀名不是zip// zipName = zipName + FileConstants.SUFFIX_ZIP;// }else{// // 压缩包默认名称未6为随机字符串// zipName = StringUtils.isBlank(zipName) ? Utility.getRandomStrByNum(6)+FileConstants.SUFFIX_ZIP : zipName;// }// // 批量下载文件到指定位置// List<File> files = downloadMultipartFile(urlList,FileConstants.DOWNLOAD);// // 将文件打包// File zipFile = ZipFileUtil.compressFiles2Zip(files,FileConstants.DOWNLOAD+File.separator+zipName);// // 删除打包之前的文件// files.stream().forEach(f->f.delete());// return zipFile;// }catch (Exception e){// logger.error('批量下载文件异常',e);// }// return null;// } /** * @Title: isFileBySuffix * @Description: 通过后缀名判断是否是某种文件 * @Author: zte * @param: fileName 文件名称 * @param: suffix 后缀名 * @Date: 2019-02-19 10:09 * @return: boolean * @throws: */ public static boolean isFileBySuffix(String fileName,String suffix){ if(StringUtils.isNoneBlank(fileName) && StringUtils.isNoneBlank(suffix)){ return fileName.endsWith(suffix.toLowerCase()) || fileName.endsWith(suffix.toUpperCase()); } return false; } /** * @Title: downloadByUrlPath * @Description: 下载网络文件 * @Author: lxt * @param: urlPath * @param: saveDir * @param: fileName * @Date: 2019-02-23 16:26 * @return: java.io.File * @throws: */ public static File downloadByUrlPath(String urlPath,String saveDir,String fileName){ if(StringUtils.isBlank(urlPath)){ log.error('下载网络文件失败，链接为空'); return null; } try (InputStream ins = new URL(urlPath).openStream()) { Path target = Paths.get(saveDir, fileName); Files.createDirectories(target.getParent()); Files.copy(ins, target, StandardCopyOption.REPLACE_EXISTING); return new File(saveDir+File.separator+fileName); } catch (IOException e) { log.error('下载网络文件异常',e); } return null; }// /**// * @Description: 上传视频文件// * @param file// * @param type// * @return: com.mbyte.easy.common.web.AjaxResult// * @Author: zte// * @Date: 2020/3/23 17:48// */// public static AjaxResult uploadVideoFile(MultipartFile file,String type){// if(file!=null){// File partFile = null;// File compressFile = null;// try {// Map<String,String> result = new HashMap<>();// // 压缩视频// if(VideoDetailConstants.VIDEO_W_FLAG.equals(type)){// compressFile = FfmpegUtil.INSTANCE.compressFile2W(file);// }// if(VideoDetailConstants.VIDEO_H_FLAG.equals(type)){// compressFile = FfmpegUtil.INSTANCE.compressFile2H(file);// }// String fileUrlPath = null;// if(compressFile != null){// fileUrlPath = OssFileUtils.uploadSingleFile(compressFile);// // 剪辑视频// partFile = FfmpegUtil.INSTANCE.getPartVideo(compressFile);// }else{// fileUrlPath = OssFileUtils.uploadSingleFile(file);// // 剪辑视频// partFile = FfmpegUtil.INSTANCE.getPartVideo(file);// }// // 上传视频本身到oss// result.put('video',fileUrlPath);// // 上传试看部分到oss// result.put('videoPart', OssFileUtils.uploadSingleFile(partFile));// return AjaxResult.success(result);// }catch (Exception e){// log.error('上传视频异常',e);// }finally {// if(partFile != null && partFile.exists()){// partFile.delete();// }// if(compressFile != null && compressFile.exists()){// compressFile.delete();// }// }// }// return AjaxResult.error();// }}

3. 阿里云 对象云存储工具类 OssUtil.java

import com.aliyun.oss.OSS;import com.aliyun.oss.OSSClient;import com.aliyun.oss.model.GetObjectRequest;import com.aliyun.oss.model.OSSObject;import com.mbyte.easy.properties.OssProerties;import com.mbyte.easy.util.Utility;import lombok.extern.slf4j.Slf4j;import org.apache.commons.io.FilenameUtils;import org.apache.commons.lang3.StringUtils;import org.apache.commons.lang3.time.DateFormatUtils;import org.apache.commons.lang3.time.DateUtils;import org.apache.logging.log4j.util.Strings;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.multipart.MultipartFile;import javax.servlet.http.HttpServletResponse;import java.io.*;import java.net.URLEncoder;import java.util.Date;import java.util.HashMap;import java.util.Map;/** * @ClassName: OSSUtill * @Description: 阿里云 对象云存储工具类 * @Author: zte * @Date: 2019-02-13 14:38 * @Version 1.0 **/@Slf4jpublic class OssUtil { /** * 注入配置 */ private static OssProerties ossProerties; /** * @Title: initConfig * @Description: 配置初始化 * @Author: lxt * @param: ossProertiesInit * @Date: 2019-02-14 09:25 * @throws: */ public static void initConfig(OssProerties ossProertiesInit){ ossProerties = ossProertiesInit; } /** * @Title: generateKey * @Description: 生成oss对象名称 * @Author: lxt * @param: fileName * @Date: 2019-02-13 15:21 * @return: java.lang.String * @throws: */ public static String generateKey(String fileName) { //对象名称格式：yyyymm.name.6位随机字符.ext return new StringBuilder(DateFormatUtils.format(new Date(), 'yyyyMMddHHmmssSSS')) .append('.').append(Utility.getRandomStrByNum(6)) .append('.').append(FilenameUtils.getExtension(fileName)) .toString(); } public static String getHttpsAddress(String url){ return url.replaceAll('http://'+ossProerties.getBucket(),ossProerties.getSslNmae()); } /** * @Title: upload * @Description: 上传方法 * @Author: zte * @param: key 对象名称 * @param: file待上传文件 * @Date: 2019-02-13 15:35 * @return: java.lang.String * @throws: */ public static String upload(String key,File file) { if(file == null || !file.exists()){ log.error('阿里云上传文件失败【'+file+'】不存在'); return null; } log.info('阿里云上传文件开始：【'+file+'】'); OSS ossClient = new OSSClient(ossProerties.getEndpoint(), ossProerties.getAccessKeyId(), ossProerties.getAccessKeySecret()); try { ossClient.putObject(ossProerties.getBucketName(),key,file); //设置url过期时间 Date expirationDate = DateUtils.addYears(new Date(), ossProerties.getExpiration()); String url = ossClient.generatePresignedUrl(ossProerties.getBucketName(), key, expirationDate).toString(); log.info('阿里云上传文件结束：【'+file+'】=>【'+url+'】'); return getHttpsAddress(url); }catch(Exception e) { log.error('阿里云上传文件异常【'+file+'】',e); }finally { ossClient.shutdown(); } return null; } /** * @Title: upload * @Description: 上传方法 * @Author: zte * @param: key 对象名称 * @param: file待上传文件 * @Date: 2019-02-13 15:35 * @return: java.lang.String * @throws: */ public static String upload(String key,byte[] bytes) { if(bytes == null || StringUtils.isBlank(key)){ log.error('阿里云上传文件不存在:【'+key+'】'); return null; } log.info('阿里云上传文件开始:【'+key+'】'); OSS ossClient = new OSSClient(ossProerties.getEndpoint(), ossProerties.getAccessKeyId(), ossProerties.getAccessKeySecret()); try { ossClient.putObject(ossProerties.getBucketName(),key, new ByteArrayInputStream(bytes)); //设置url过期时间 Date expirationDate = DateUtils.addYears(new Date(), 100); String url = ossClient.generatePresignedUrl(ossProerties.getBucketName(), key, expirationDate).toString(); log.info('阿里云上传文件结束：【'+key+'】=>【'+url+'】'); return getHttpsAddress(url); }catch(Exception e) { log.error('阿里云上传文件异常:【'+key+'】',e); }finally { ossClient.shutdown(); } return null; } /** * @Title: uploadWithObjectName * @Description: 上传方法，返回对象名称和 url * @Author: zte * @param: file待上传文件 * @Date: 2019-02-13 15:35 * @return: java.lang.Map<String,String> * @throws: */ public static Map<String,String> uploadWithObjectName(File file) { if(file == null || !file.exists()){ log.error('阿里云上传文件失败【'+file+'】不存在'); return null; } Map<String,String> map = new HashMap<>(); log.info('阿里云上传文件开始：【'+file+'】'); OSS ossClient = new OSSClient(ossProerties.getEndpoint(), ossProerties.getAccessKeyId(), ossProerties.getAccessKeySecret()); try { String key = generateKey(file.getName()); ossClient.putObject(ossProerties.getBucketName(),key, new FileInputStream(file)); //设置url过期时间 Date expirationDate = DateUtils.addYears(new Date(), ossProerties.getExpiration()); String url = ossClient.generatePresignedUrl(ossProerties.getBucketName(), key, expirationDate).toString(); log.info('阿里云上传文件结束：【'+file+'】=>【'+url+'】'); map.put('objectName',key); map.put('url',url); return map; }catch(Exception e) { log.error('阿里云上传文件异常【'+file+'】',e); }finally { ossClient.shutdown(); } return null; } /** * @Title: delete * @Description: 删除方法 * @Author: zte * @param: url 待删除对象url * @Date: 2019-02-13 15:54 * @throws: */ public static void delete(String url) { if(StringUtils.isBlank(url)){ log.error('阿里云删除文件失败，对象url为空'); return; } log.info('阿里云删除文件开始：【'+url+'】'); if(url.contains(ossProerties.getBucket())){ //根据url获取对象名称 url = getObjectNameByUrl(url); } OSS ossClient = new OSSClient(ossProerties.getEndpoint(), ossProerties.getAccessKeyId(), ossProerties.getAccessKeySecret()); try { // 删除文件 ossClient.deleteObject(ossProerties.getBucketName(), url); log.info('阿里云删除文件结束：【'+url+'】'); }catch(Exception e) { log.error('阿里云删除文件异常【'+url+'】',e); }finally { ossClient.shutdown(); } } /** * @Title: download * @Description: 下载文件到本地文件 * @Author: zte * @param: url 待下载对象url * @param: filePath 下载到本地文件 * @Date: 2019-02-13 15:56 * @return: java.io.File * @throws: */ public static File download2File(String url, String filePath) { log.info('阿里云下载文件开始：【'+url+'】'); if(url.contains(ossProerties.getBucket())){ //根据url获取对象名称 url = getObjectNameByUrl(url); } OSS ossClient = new OSSClient(ossProerties.getEndpoint(), ossProerties.getAccessKeyId(), ossProerties.getAccessKeySecret()); try { File file = new File(filePath); // 下载OSS文件到本地文件。如果指定的本地文件存在会覆盖，不存在则新建。 ossClient.getObject(new GetObjectRequest(ossProerties.getBucketName(), url),file); log.info('阿里云下载文件结束：【'+url+'】'); return file; }catch(Exception e) { log.error('阿里云下载文件异常【'+url+'】',e); }finally { ossClient.shutdown(); } return null; } /** * @Title: download * @Description: 通过流下载文件 * @Author: zte * @param: url 待下载对象url * @param: filePath 下载到本地文件 * @Date: 2019-02-13 15:56 * @return: java.io.File * @throws: */ public static void download2FileByStream(String url, String fileName, HttpServletResponse response) { BufferedInputStream inputStream = null; OSS ossClient = new OSSClient(ossProerties.getEndpoint(), ossProerties.getAccessKeyId(), ossProerties.getAccessKeySecret()); try( BufferedOutputStream outputStream = new BufferedOutputStream(response.getOutputStream());){ // 配置文件下载 response.setHeader('content-type', 'application/octet-stream'); response.setContentType('application/octet-stream'); if(url.contains(ossProerties.getBucket())){ //根据url获取对象名称 url = getObjectNameByUrl(url); } // 下载文件能正常显示中文 response.setHeader('Content-Disposition', 'attachment;filename=' + URLEncoder.encode(StringUtils.isBlank(fileName) ? url : fileName, 'UTF-8')); log.info('阿里云下载文件开始：【'+url+'】'); // ossObject包含文件所在的存储空间名称、文件名称、文件元信息以及一个输入流。 OSSObject ossObject = ossClient.getObject(ossProerties.getBucketName(), url); inputStream = new BufferedInputStream(ossObject.getObjectContent()); byte[] buff = new byte[2048]; int bytesRead; while (-1 != (bytesRead = inputStream.read(buff, 0, buff.length))){ outputStream.write(buff, 0, bytesRead); } outputStream.flush(); } catch (Exception e) { log.error('下载异常！', e); }finally { log.info('阿里云下载文件结束：【'+url+'】'); ossClient.shutdown(); if(inputStream != null){ try { inputStream.close(); } catch (IOException e) { e.printStackTrace(); } } } } /** * @Title: download * @Description: 下载文件到指定目录,文件名称为阿里云文件对象名称 * @Author: zte * @param: url 待下载对象url * @param: dir 下载到本地目录 * @Date: 2019-02-13 15:56 * @return: java.io.File * @throws: */ public static File download2Dir(String url, String dir) { log.info('阿里云下载文件开始：【'+url+'】'); if(url.contains(ossProerties.getBucket())){ //根据url获取对象名称 url = getObjectNameByUrl(url); } OSS ossClient = new OSSClient(ossProerties.getEndpoint(), ossProerties.getAccessKeyId(), ossProerties.getAccessKeySecret()); try { File file = new File(dir+File.separator+url); // 下载OSS文件到本地文件。如果指定的本地文件存在会覆盖，不存在则新建。 ossClient.getObject(new GetObjectRequest(ossProerties.getBucketName(), url),file); log.info('阿里云下载文件结束：【'+url+'】'); return file; }catch(Exception e) { log.error('阿里云下载文件异常【'+url+'】',e); }finally { ossClient.shutdown(); } return null; } /* * @Title: getObjectNameByUrl * @Description: 通过url获取对象名称 * @Author: lxt * @param: url * @Date: 2019-02-13 16:20 * @return: java.lang.String * @throws: */ public static String getObjectNameByUrl(String url){ if(StringUtils.isBlank(url)){ return null; } return url.substring(url.indexOf(ossProerties.getBucket())+ossProerties.getBucket().length()+1,url.indexOf('?')); } /** * @author: zte * @description: 重载方法,根据file生成文件名称并且上传文件到阿里云 * @date: 2019/9/21 10:56 * @param file : MultipartFile文件 * @see #upload(String,byte[]) * @return 数据库中要存入的路径 */ public static String upload(MultipartFile file) throws IOException { if (file == null || Strings.isEmpty(file.getOriginalFilename())){ return null; } return upload(generateKey(file.getOriginalFilename()), file.getBytes()); } /** * 调用浏览器下载 * @param url * @param response */ public static void download2FileByStream(String url,HttpServletResponse response,String name) { File file = new File(url); String fileName=file.getName(); fileName= StringUtils.substringBefore(fileName,'?'); String fileLast=StringUtils.substringAfterLast(fileName,'.'); fileName=name+'.'+fileLast; BufferedInputStream inputStream = null; OSS ossClient = new OSSClient(ossProerties.getEndpoint(), ossProerties.getAccessKeyId(), ossProerties.getAccessKeySecret()); try( BufferedOutputStream outputStream = new BufferedOutputStream(response.getOutputStream());){ // 配置文件下载 response.setHeader('content-type', 'application/octet-stream'); response.setContentType('application/octet-stream'); if(url.contains(ossProerties.getBucket())){ //根据url获取对象名称 url = getObjectNameByUrl(url); } // 下载文件能正常显示中文 response.setHeader('Content-Disposition', 'attachment;filename=' + URLEncoder.encode(StringUtils.isBlank(fileName) ? url : fileName, 'UTF-8')); log.info('阿里云下载文件开始：【'+url+'】'); // ossObject包含文件所在的存储空间名称、文件名称、文件元信息以及一个输入流。 OSSObject ossObject = ossClient.getObject(ossProerties.getBucketName(), url); inputStream = new BufferedInputStream(ossObject.getObjectContent()); byte[] buff = new byte[2048]; int bytesRead; while (-1 != (bytesRead = inputStream.read(buff, 0, buff.length))){ outputStream.write(buff, 0, bytesRead); } outputStream.flush(); } catch (Exception e) { log.error('下载异常！', e); }finally { log.info('阿里云下载文件结束：【'+url+'】'); ossClient.shutdown(); if(inputStream != null){ try { inputStream.close(); } catch (IOException e) { e.printStackTrace(); } } } }}

5. controller 调用样例

我这里使用的是我自己项目封装的 AjaxResult工具类，大家可以使用Map,通过这个方法呢，我们就可以使用oss将图片保存，并且返回前端图片的保存地址(可以访问)。

/** * 上传 * @param fileupload * @return */ @PostMapping('uploadImg') @ResponseBody public AjaxResult uploadImg(MultipartFile fileupload){ if(fileupload != null){ String path = OssFileUtils.uploadSingleFile(fileupload); return AjaxResult.success(path); }else { return AjaxResult.error(); } }

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