meta.setCacheControl("max_file_size : '400kb");
时间: 2024-05-03 19:22:42 浏览: 75
As an AI language model, I do not have access to the meta object or its methods. However, the code snippet provided seems to have a syntax error. If you are trying to set the maximum file size of the cache control, the correct syntax would be:
```
meta.setCacheControl("max-age=3600, max-file-size=400KB");
```
This sets the maximum file size of the cache control to 400KB.
相关问题
org.springframework.http.server.reactive中的ServerHttpResponse如何设置响应头
要设置响应头,可以使用`ServerHttpResponse`的`getHeaders()`方法获取响应头,然后使用`add()`或`set()`方法添加或更新响应头的值。例如,以下代码将设置`Content-Type`和`Cache-Control`响应头:
```
@Override
public Mono<Void> handle(ServerHttpRequest request, ServerHttpResponse response) {
HttpHeaders headers = response.getHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
headers.setCacheControl(CacheControl.noCache().getHeaderValue());
// ...
return Mono.empty();
}
```
在这里,我们使用`setContentType()`方法设置响应的`Content-Type`为JSON格式,使用`setCacheControl()`方法设置`Cache-Control`响应头为`no-cache`。您还可以使用`add()`方法添加多个响应头。
objectName cannot be null(aws中,java代码)请问该如何改进?
这个错误通常是由于在使用AWS Java SDK时未正确设置对象名称而导致的。您可以通过确保将对象名称设置为非空字符串来解决此问题。例如,您可以使用以下代码设置对象名称:
```
PutObjectRequest request = new PutObjectRequest(bucketName, objectKey, new File(filePath));
request.setMetadata(new ObjectMetadata());
request.getMetadata().setContentDisposition("attachment; filename=\"" + fileName + "\"");
request.getMetadata().setCacheControl("public, max-age=31536000");
request.getMetadata().setContentType(getMimeType(fileName));
request.withCannedAcl(CannedAccessControlList.PublicRead);
request.setStorageClass(StorageClass.StandardInfrequentAccess);
request.setSSEAlgorithm(ObjectMetadata.AES_256_SERVER_SIDE_ENCRYPTION);
request.setSSECustomerKey(new SSECustomerKey(key));
request.setSSEAwsKeyManagementParams(new SSEAwsKeyManagementParams(keyId));
amazonS3.putObject(request);
```
请注意,putObject()方法需要三个参数,即桶的名称,对象键和文件本身。通过将此代码与您自己的代码进行比较,您应该能够找到并解决问题。