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开通阿里云OSS云存储系统后，并新增子用户
OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
官网默认现在是配到电脑系统环境变量中，我也配置了，并且在cmd命令窗口看是有的，但是我的idea就是拿不到，我打断点调试看了也是拿不到，这时候我想起关了idea重开试一下，真的就拿到了
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在 RAM 控制台，创建使用永久 AccessKey 访问的 RAM 用户，保存 AccessKey，然后为该用户授予
AliyunOSSFullAccess权限。 -
使用 RAM 用户 AccessKey 配置环境变量。
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在CMD中运行以下命令。
setx OSS_ACCESS_KEY_ID "YOUR_ACCESS_KEY_ID" setx OSS_ACCESS_KEY_SECRET "YOUR_ACCESS_KEY_SECRET"-
运行以下命令，检查环境变量是否生效。
echo %OSS_ACCESS_KEY_ID% echo %OSS_ACCESS_KEY_SECRET%
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/**
*单元测试上传图片OSS（文件流方式）
*/
@Testpublic void testUpload() throws FileNotFoundException, com.aliyuncs.exceptions.ClientException {// Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。String endpoint = "oss-cn-guangzhou.aliyuncs.com";// 从环境变量中获取访问凭证。运行本代码示例之前，请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。System.out.println("..................." +System.getenv());EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();// 填写Bucket名称，例如examplebucket。String bucketName = "gulimall-xx";// 填写Object完整路径，完整路径中不能包含Bucket名称，例如exampledir/exampleobject.txt。String objectName = "xiaomi.png";// 填写本地文件的完整路径，例如D:\\localpath\\examplefile.txt。// 如果未指定本地路径，则默认从示例程序所属项目对应本地路径中上传文件流。String filePath= "E:\\xiaomi.png";// 填写Bucket所在地域。以华东1（杭州）为例，Region填写为cn-hangzhou。String region = "cn-guangzhou";// 创建OSSClient实例。// 当OSSClient实例不再使用时，调用shutdown方法以释放资源。ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);OSS ossClient = OSSClientBuilder.create().endpoint(endpoint).credentialsProvider(credentialsProvider).clientConfiguration(clientBuilderConfiguration).region(region).build();try {InputStream inputStream = new FileInputStream(filePath);// 创建PutObjectRequest对象。PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, inputStream);// 创建PutObject请求。PutObjectResult result = ossClient.putObject(putObjectRequest);System.out.println("上传完成。。。。");} catch (OSSException oe) {System.out.println("Caught an OSSException, which means your request made it to OSS, "+ "but was rejected with an error response for some reason.");System.out.println("Error Message:" + oe.getErrorMessage());System.out.println("Error Code:" + oe.getErrorCode());System.out.println("Request ID:" + oe.getRequestId());System.out.println("Host ID:" + oe.getHostId());} catch (ClientException ce) {System.out.println("Caught an ClientException, which means the client encountered "+ "a serious internal problem while trying to communicate with OSS, "+ "such as not being able to access the network.");System.out.println("Error Message:" + ce.getMessage());} finally {if (ossClient != null) {ossClient.shutdown();}}}