阿里云对象存储OSS服务——上传/删除/获取图片
1. 准备工作
开通对象存储 OSS服务创建AccessKey（使用阿里云OSS SDK时需要使用到）创建Bucket（输入唯一的Bucket名字，选择合适的区域，其他选项默认）创建Spring Boot项目推荐使用Postman测试后端API，Postman的下载及使用参考 /fxbin123/article/details/80428216注意：使用Postman测试上传图片功能时，需要将请求体（Body）的类型设为form-data2. 上传图片
// 未对异常进行处理@PostMapping(value = "/image")public void uploadImage(MultipartFile file) {// MultipartFile代表HTML中form data方式上传的文件// EndPoint以上海为例String endPoint = "oss-cn-";// 阿里云API秘钥String accessKeyId = "<your access key id>";String accessKeySecret = "<your access key secret>";String bucketName = "<bucket name>";OSSClient client = new OSSClient(endPoint, accessKeyId, accessKeySecret);client.putObject(bucketName, imageName, new ByteArrayInputStream(file.getBytes()));client.shutdown();}
3. 删除图片
// 未对异常进行处理@DeleteMapping(value = "/image/{imageName}")public void deleteImage(@PathVariable String imageName) {// EndPoint以上海为例String endPoint = "oss-cn-";// 阿里云API秘钥String accessKeyId = "<your access key id>";String accessKeySecret = "<your access key secret>";String bucketName = "<bucket name>";OSSClient client = new OSSClient(endPoint, accessKeyId, accessKeySecret);client.deleteObject(bucketName, imageName);client.shutdown();}
4. 获取图片
// 未对所有异常进行处理@GetMapping(value = "/image/{imageName}")public byte[] getImage(@PathVariable String imageName) {// EndPoint以上海为例String endPoint = "oss-cn-";// 阿里云API秘钥String accessKeyId = "<your access key id>";String accessKeySecret = "<your access key secret>";String bucketName = "<bucket name>";OSSClient client = new OSSClient(endPoint, accessKeyId, accessKeySecret);OSSObject image = client.getObject(bucketName, imageName);InputStream content = image.getObjectContent();if (content != null) {try {// 设置一个足够大的buffer用于存储图片的比特数据int length = 1920 * 1260 * 3;byte[] buf = new byte[length];int size = 0;int temp;while ((temp = content.read()) != -1) {buf[size] = (byte) temp;size++;}content.close();// 对缓冲区进行裁剪后，将图片以字节数组的形式返回return Arrays.copyOf(buf, size);} catch (IOException e) {System.out.println("exception");return null;}}client.shutdown();return null;}
5. 测试获取图片功能
将内容拷贝后粘贴到Spring Boot项目的src/main/resources/static目录的某个文件
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Get Image</title></head><body style="margin: 0;"><!-- 测试获取OSS图片功能是否正确 --><img src="http://localhost:80/image/<imageName>"/></body></html>
阿里云对象存储 OSS官方文档： /product/31815.html?spm=5176.8466032.0.0.7e8714505JnJY6
