ossClient.uploadFile和ossClient.downloadFile方法不支持进度条功能.
根据官方文档 https://help.aliyun.com/document_detail/84796.html?spm=a2c4g.11186623.6.791.40554d83cDiWSN
流式上传不支持百分比 而new File是支持的
流式上传:
Start to upload...... 8192 bytes have been written at this time, upload ratio: unknown(8192/...) 8192 bytes have been written at this time, upload ratio: unknown(16384/...) 8192 bytes have been written at this time, upload ratio: unknown(24576/...) 8192 bytes have been written at this time, upload ratio: unknown(32768/...) 8192 bytes have been written at this time, upload ratio: unknown(40960/...) 8192 bytes have been written at this time, upload ratio: unknown(49152/...) 8192 bytes have been written at this time, upload ratio: unknown(57344/...) 1967 bytes have been written at this time, upload ratio: unknown(59311/...) Succeed to upload, 59311 bytes have been transferred in total
而new File(localFilePath);是可以看到百分比的,从开始也获取了文件的整个大小.
Start to upload...... 3546429 bytes in total will be uploaded to OSS 8192 bytes have been written at this time, upload progress: 0%(8192/3546429) 8192 bytes have been written at this time, upload progress: 0%(16384/3546429) 8192 bytes have been written at this time, upload progress: 0%(24576/3546429) 8192 bytes have been written at this time, upload progress: 0%(32768/3546429) 8192 bytes have been written at this time, upload progress: 1%(40960/3546429) 8192 bytes have been written at this time, upload progress: 1%(49152/3546429) 8192 bytes have been written at this time, upload progress: 1%(57344/3546429) .... .... 7485 bytes have been written at this time, upload progress: 100%(3546429/3546429) Succeed to upload, 3546429 bytes have been transferred in total
整个上传下载速度都还挺快的
试了下300MB文件每次2M/s
上传监听器
package com.springboot.oss.listener;
import com.aliyun.oss.event.ProgressEvent;
import com.aliyun.oss.event.ProgressEventType;
import com.aliyun.oss.event.ProgressListener;
/**
* ossClient.putObject, ossClient.getObject, ossClient.uploadPart方法支持进度条功能.
* ossClient.uploadFile和ossClient.downloadFile方法不支持进度条功能.
* 简单上传进度条监听器
* https://help.aliyun.com/document_detail/84796.html?spm=a2c4g.11186623.6.791.40554d83cDiWSN
*/
public class PutObjectProgressListener implements ProgressListener {
private long bytesWritten = 0;
private long totalBytes = -1;
private boolean succeed = false;
@Override
public void progressChanged(ProgressEvent progressEvent) {
long bytes = progressEvent.getBytes();
ProgressEventType eventType = progressEvent.getEventType();
switch (eventType) {
case TRANSFER_STARTED_EVENT:
System.out.println("Start to upload......");
break;
case REQUEST_CONTENT_LENGTH_EVENT:
this.totalBytes = bytes;
System.out.println(this.totalBytes + " bytes in total will be uploaded to OSS");
break;
case REQUEST_BYTE_TRANSFER_EVENT:
this.bytesWritten += bytes;
if (this.totalBytes != -1) {
int percent = (int)(this.bytesWritten * 100.0 / this.totalBytes);
System.out.println(bytes + " bytes have been written at this time, upload progress: " +
percent + "%(" + this.bytesWritten + "/" + this.totalBytes + ")");
} else {
System.out.println(bytes + " bytes have been written at this time, upload ratio: unknown" +
"(" + this.bytesWritten + "/...)");
}
break;
case TRANSFER_COMPLETED_EVENT:
this.succeed = true;
System.out.println("Succeed to upload, " + this.bytesWritten + " bytes have been transferred in total");
break;
case TRANSFER_FAILED_EVENT:
System.out.println("Failed to upload, " + this.bytesWritten + " bytes have been transferred");
break;
default:
break;
}
}
public boolean isSucceed(){
return succeed;
}
}
下载监听器
package com.springboot.oss.listener;
import com.aliyun.oss.event.ProgressEvent;
import com.aliyun.oss.event.ProgressEventType;
import com.aliyun.oss.event.ProgressListener;
/**
* 文件下载监听器
* ossClient.uploadFile和ossClient.downloadFile方法不支持进度条功能.
*/
public class GetObjectProgressListener implements ProgressListener {
private long bytesRead = 0;
private long totalBytes = -1;
private boolean succeed = false;
@Override
public void progressChanged(ProgressEvent progressEvent) {
long bytes = progressEvent.getBytes();
ProgressEventType eventType = progressEvent.getEventType();
switch (eventType) {
case TRANSFER_STARTED_EVENT:
System.out.println("Start to download......");
break;
case RESPONSE_CONTENT_LENGTH_EVENT:
this.totalBytes = bytes;
System.out.println(this.totalBytes + " bytes in total will be downloaded to a local file");
break;
case RESPONSE_BYTE_TRANSFER_EVENT:
this.bytesRead += bytes;
if (this.totalBytes != -1) {
int percent = (int)(this.bytesRead * 100.0 / this.totalBytes);
System.out.println(bytes + " bytes have been read at this time, download progress: " +
percent + "%(" + this.bytesRead + "/" + this.totalBytes + ")");
} else {
System.out.println(bytes + " bytes have been read at this time, download ratio: unknown" +
"(" + this.bytesRead + "/...)");
}
break;
case TRANSFER_COMPLETED_EVENT:
this.succeed = true;
System.out.println("Succeed to download, " + this.bytesRead + " bytes have been transferred in total");
break;
case TRANSFER_FAILED_EVENT:
System.out.println("Failed to download, " + this.bytesRead + " bytes have been transferred");
break;
default:
break;
}
}
public boolean isSucceed() {
return succeed;
}
}
关于怎样把进度展示到前端去,可能需要在方法调用上再调整一番.