上篇文章中已经把接口端和service业务层写了，这次就把OSS上传文件的工具类补上。 一、首先配置好OSS服务器各项节点，这是在springboot中appliaction.yml配置文件中的写法。
@Componentpublic class OssConstant implements InitializingBean {@Value("${oss.file.endpoint_im}")private String oss_file_endpointim;@Value("${oss.file.bucket_im}")private String oss_file_bucketim;@Value("${oss.file.keyid_im}")private String oss_file_keyid_im;@Value("${oss.file.keysecret_im}")private String oss_file_keysecret_im;@Value("${oss.file.bucketprefix}")private String oss_file_bucketprefix;public static String OSS_END_POINT_IM ;public static String OSS_BUCKET_IM; ;public static String OSS_ACCESS_KEY_ID_IM;public static String OSS_ACCESS_KEY_SECRET_IM ;public static String OSS_FILE_BUCKETPREFIX ;@Overridepublic void afterPropertiesSet() throws Exception {OSS_END_POINT_IM = oss_file_endpointim;OSS_BUCKET_IM = oss_file_bucketim;OSS_ACCESS_KEY_ID_IM = oss_file_keyid_im;OSS_ACCESS_KEY_SECRET_IM = oss_file_keysecret_im;OSS_FILE_BUCKETPREFIX = oss_file_bucketprefix;}}二、OSS上传工具类public class AliyunOSSUtil {private static final String accessKeyId_im=OssConstant.OSS_ACCESS_KEY_ID_IM;private static final String accessKeySecret_im=OssConstant.OSS_ACCESS_KEY_SECRET_IM;private static final String endpoint_im = OssConstant.OSS_END_POINT_IM;private static final String bucket_im = OssConstant.OSS_BUCKET_IM;public static String OSSUploadFile(File file){SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");String dateStr = format.format(new Date());if(null == file){return null;}OSSClient ossClient = new OSSClient(endpoint_im,accessKeyId_im,accessKeySecret_im);try {//容器不存在，就创建if(! ossClient.doesBucketExist(bucket_im)){ossClient.createBucket(bucket_im);CreateBucketRequest createBucketRequest = new CreateBucketRequest(bucket_im);createBucketRequest.setCannedACL(CannedAccessControlList.Default);ossClient.createBucket(createBucketRequest);}String fileUrl = dateStr + "/" + new Date().getTime()+"-"+file.getName();//上传文件PutObjectResult result = ossClient.putObject(new PutObjectRequest(bucket_im, fileUrl, file));//设置权限 这里是私有权限读写ossClient.setBucketAcl(bucketName,CannedAccessControlList.Default);if(null != result){logger.info("==========>OSS文件上传成功,OSS地址："+fileUrl);return fileBucketprefix+"/"+fileUrl;}}catch (OSSException oe){logger.error(oe.getMessage());}catch (ClientException ce){logger.error(ce.getMessage());}finally {//关闭ossClient.shutdown();}return null;}}至此，文件已经成功上传到OSS云服务器了。
原文：java上传文件到OSS云服务器（二）
