使用java写一个阿里云oss上传

以下是使用Java代码实现阿里云OSS上传的示例：

1. 添加依赖

<dependency>
    <groupId>com.aliyun.oss</groupId>
    <artifactId>aliyun-sdk-oss</artifactId>
    <version>3.13.1</version>
</dependency>

2. 初始化OSSClient对象

String endpoint = "yourEndpoint";
String accessKeyId = "yourAccessKeyId";
String accessKeySecret = "yourAccessKeySecret";

OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

3. 创建Bucket

String bucketName = "yourBucketName";
if (!ossClient.doesBucketExist(bucketName)) {
    ossClient.createBucket(bucketName);
}

4. 上传文件

String objectName = "yourObjectName";
String filePath = "yourFilePath";

File file = new File(filePath);
ossClient.putObject(bucketName, objectName, file);

5. 关闭OSSClient对象

ossClient.shutdown();

完整的示例代码如下：

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import java.io.File;

public class OssUploadDemo {
    public static void main(String[] args) {
        String endpoint = "yourEndpoint";
        String accessKeyId = "yourAccessKeyId";
        String accessKeySecret = "yourAccessKeySecret";
        String bucketName = "yourBucketName";
        String objectName = "yourObjectName";
        String filePath = "yourFilePath";

        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        if (!ossClient.doesBucketExist(bucketName)) {
            ossClient.createBucket(bucketName);
        }

        File file = new File(filePath);
        ossClient.putObject(bucketName, objectName, file);

        ossClient.shutdown();
    }
}