目录
1 登录/注册阿里云并进入控制台
2 进入OSS控制台
3 创建bucket
4 查看bucket
5 获取AccessKey
6 查看帮助文档
在OSS管理控制台界面中(即3 创建bucket步骤中的界面)：
7 添加Maven依赖
Java9以下版本只需要在<dependencies>中添加如下内容：
<dependency>
<groupId>com.aliyun.oss</groupId>
<artifactId>aliyun-sdk-oss</artifactId>
<version>3.15.1</version>
</dependency>Java9及以上版本还需额外添加如下内容：
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.1</version>
</dependency>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>activation</artifactId>
<version>1.1.1</version>
</dependency>
<!-- no more than 2.3.3-->
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-runtime</artifactId>
<version>2.3.3</version>
</dependency>8 获取示例代码并改造成工具类
在简单上传中，我们可以获得上传字符串的代码如下：
public class Demo {
public static void main(String[] args) throws Exception {
// Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
String endpoint = "https://oss-cn-hangzhou.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。
EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
// 填写Bucket名称，例如examplebucket。
String bucketName = "examplebucket";
// 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 = "exampledir/exampleobject.txt";
// 创建OSSClient实例。
OSS ossClient = new OSSClientBuilder().build(endpoint, credentialsProvider);
try {
// 填写字符串。
String content = "Hello OSS，你好世界";
// 创建PutObjectRequest对象。
PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, new ByteArrayInputStream(content.getBytes()));
// 如果需要上传时设置存储类型和访问权限，请参考以下示例代码。
// ObjectMetadata metadata = new ObjectMetadata();
// metadata.setHeader(OSSHeaders.OSS_STORAGE_CLASS, StorageClass.Standard.toString());
// metadata.setObjectAcl(CannedAccessControlList.Private);
// putObjectRequest.setMetadata(metadata);
// 上传字符串。
PutObjectResult result = ossClient.putObject(putObjectRequest);
} 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();
}
}
}
} 经过改造，我们可以得到一个可以上传图片的工具类：
//代码参考自黑马程序员
public class AliOssUtil {
// 其它Region请按实际情况填写，如何获得如下图
private static final String ENDPOINT = "https://oss-cn-beijing.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。
//从之前保存的CSV文件中获取
private static final String ACCESS_KEY_ID="LTAI5tJQVkx1pkBrbuPBA3Lx";
private static final String ACCESS_KEY_SECRET="2Q0i7QsHQO7jNc8xIPirX4YHoQvXr2";
// 填写Bucket名称
private static final String BUCKET_NAME = "zy-blog-oss";
public static String uploadFile(String objectName, InputStream in) throws Exception {
// 创建OSSClient实例。
OSS ossClient = new OSSClientBuilder().build(ENDPOINT,ACCESS_KEY_ID, ACCESS_KEY_SECRET);
String url = "";
try {
// 创建PutObjectRequest对象。
PutObjectRequest putObjectRequest = new PutObjectRequest(BUCKET_NAME, objectName, in);
PutObjectResult result = ossClient.putObject(putObjectRequest);
//url组成: https://bucket名称.区域节点/objectName
url = "https://"+BUCKET_NAME+"."+ENDPOINT.substring(ENDPOINT.lastIndexOf("/")+1)+"/"+objectName;
} 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();
}
}
return url;
}
}ENDPOINT获得方式：
9 测试
①编写控制类
@RestController
public class FileUploadController {
@PostMapping("/upload")
public Result<String> upload(MultipartFile file) throws Exception {
String originalFilename = file.getOriginalFilename();
//保证文件的名字是唯一的,从而防止文件覆盖
String filename = UUID.randomUUID() +originalFilename.substring(originalFilename.lastIndexOf("."));
String url = AliOssUtil.uploadFile(filename,file.getInputStream());
return Result.success(url);
}
}②Postman测试
③查看阿里云
已经成功存储，此时访问②中连接，就会下载得到图片。
