ru.dlabs71.library.email.mime

Class DefaultFileParametersDetector

java.lang.Object

ru.dlabs71.library.email.mime.DefaultFileParametersDetector

All Implemented Interfaces:

FileParametersDetector

public class DefaultFileParametersDetector
extends Object
implements FileParametersDetector

This class implements FileParametersDetector interface. Its purpose is to define MIMEType by a file. It is based on two methods:

1. It probes the content type of a file using Files.probeContentType(Path)
2. It tries to guess a content type using URLConnection.guessContentTypeFromName(String)

These methods are used in the same order as above in the text. If its can't define MIMEType then the detectMimeType(File) method will return the default value (application/octet-stream).

Project name: d-email

Creation date: 2023-09-26

Since:

1.0.0

Author:

Ivanov Danila

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEFAULT_CONTENT_TYPE

Constructor Summary

Constructors

Constructor and Description
DefaultFileParametersDetector()

Method Summary

Modifier and Type	Method and Description
Charset	detectEncoding(File file) Returns always system default charset.
String	detectMimeType(File file) Returns MIMEType by a file.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEFAULT_CONTENT_TYPE

public static final String DEFAULT_CONTENT_TYPE

See Also:

Constant Field Values

Constructor Detail

DefaultFileParametersDetector

public DefaultFileParametersDetector()

Method Detail

detectMimeType

public String detectMimeType(File file)

Returns MIMEType by a file.

It uses the next methods: Files.probeContentType(Path) and URLConnection.guessContentTypeFromName(String) or else returns the default value from the constant DEFAULT_CONTENT_TYPE

Specified by:

detectMimeType in interface FileParametersDetector

Parameters:

file - a file from which it will take MIMEType

Returns:

MIMEType as string

detectEncoding

public Charset detectEncoding(File file)

Returns always system default charset. You can override this method or create your own implementation of the FileParametersDetector interface.

Specified by:

detectEncoding in interface FileParametersDetector

Parameters:

file - a file for getting content charset

Returns:

system default charset