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getHeader("Content-Disposition"); String fileName = disposition. replaceFirst("(? i)^. *filename=\"?([^\"]+)\"?.

The HTTP Content Disposition is a response-type header field that gives information on how to process the response payload and additional information such as filename when user saves it locally.

Content-Type tells the browser how to interpret the response, but Content-Disposition: attachment tells the browser to treat the response as a file, rather than trying to render it. But not ALL clients are web browsers, and not all web browsers are equal.

The header is where you tell Java what value type, if any, the method will return (an int value, a double value, a string value, etc).

It is often added to attachments specifying whether the attachment body part should be displayed (inline) or presented as a file name to be copied (attachment). The Content-disposition header has the following format: Content-disposition: disposition_type; parameter=value;parameter=value...

Content-Disposition: attachment Content-Disposition: attachment; filename="document. doc" These are two examples of this HTTP header that will, in many implementations, present the user with an option to save the attachment to local storage.

The Content-Disposition response header field is used to convey additional information about how to process the response payload, and also can be used to attach additional metadata, such as the filename.

public class ContentDisposition extends Object. This class represents a MIME ContentDisposition value. It provides methods to parse a ContentDisposition string into individual components and to generate a MIME style ContentDisposition string.