java实现minio上传进度条
时间: 2024-10-20 20:05:50 浏览: 56
在Java中,使用MinIO SDK上传文件并跟踪上传进度通常涉及到监听上传操作的状态变化。MinIO库本身并不直接提供上传进度条功能,但你可以通过实现`MultipartUploadPart`的`PartETag`回调来间接获取部分上传完成的进度。下面是一个简单的示例:
```java
import io.minio.MinioClient;
import io.minio.errors.MinioException;
public class MinioUploader {
private final MinioClient minioClient;
private String bucketName;
private String objectName;
public MinioUploader(MinioClient minioClient, String bucketName, String objectName) {
this.minioClient = minioClient;
this.bucketName = bucketName;
this.objectName = objectName;
}
public void uploadWithProgress(String filePath) throws IOException, InterruptedException, MinioException {
MultipartUploader uploader = minioClient.multipartUpload(
bucketName,
objectName,
new PartSizeSource() {
@Override
public InputStream getInputStream(int partNumber) throws IOException {
// 实现这里来读取源文件的部分数据
throw new UnsupportedOperationException("这部分需要你自己实现");
}
@Override
public long getSize() throws IOException {
// 返回整个文件大小
return Files.size(Paths.get(filePath));
}
// 这里是关键部分,当每个部分上传完成后会被调用
@Override
public void onPartCompleted(long partNumber, PartETag eTag) {
double progress = (double)partNumber / totalParts * 100; // 计算进度百分比
System.out.println("Uploaded part " + partNumber + ", Progress: " + progress + "%");
}
});
try {
uploader.complete();
System.out.println("File uploaded successfully.");
} finally {
uploader.shutdown();
}
}
}
```
在这个示例中,你需要自定义`PartSizeSource`来读取文件内容,并覆盖`onPartCompleted`方法来更新上传进度。请注意,这只是一个基础模板,实际应用中可能还需要处理异常和其他细节。
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