java 将MultipartFile[]压缩为zip后在转成MultipartFile并上传到阿里云oss中 不在服务器创建文件
时间: 2023-11-01 15:57:12 浏览: 157
可以使用Java的ZipOutputStream类将MultipartFile[]压缩为zip文件,然后将zip文件转换为MultipartFile并上传到阿里云oss中。以下是一个示例代码:
```java
public MultipartFile zipAndConvertToMultipartFile(MultipartFile[] files) throws IOException {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ZipOutputStream zipOut = new ZipOutputStream(bos);
for (MultipartFile file : files) {
String fileName = file.getOriginalFilename();
ZipEntry zipEntry = new ZipEntry(fileName);
zipOut.putNextEntry(zipEntry);
zipOut.write(file.getBytes());
zipOut.closeEntry();
}
zipOut.close();
bos.close();
// Convert ByteArrayOutputStream to MultipartFile
byte[] bytes = bos.toByteArray();
MultipartFile zipFile = new MockMultipartFile("files.zip", bytes);
return zipFile;
}
public void uploadToOSS(MultipartFile zipFile) {
// Initialize OSS client
OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
// Upload MultipartFile to OSS
InputStream inputStream = null;
try {
inputStream = zipFile.getInputStream();
PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, "files.zip", inputStream);
ossClient.putObject(putObjectRequest);
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (inputStream != null) {
inputStream.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
// Close OSS client
ossClient.shutdown();
}
```
需要注意的是,这里使用了MockMultipartFile类来构造MultipartFile对象,因为ZipOutputStream类需要写入文件的名称,而MultipartFile没有提供这个方法。因此,我们需要手动构造一个MultipartFile对象。另外,如果需要上传的文件较大,可以考虑使用MultipartFile的TransferTo()方法来实现零拷贝上传。
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