And for those needing to use this solution within Android, you can simply include the following in the build. This is a great solution! Determine file type from file extension Since 1. It is, however, super simple to add any content type you may need: Create file named 'mime. To fetch mime type for a file, you would simply use Files and do this in your code: Files.
Frakcool I used MimeUtil. ExtensionMimeDetector" ; MimeUtil. Thanks for the working solution. The documentation of mime-util is not very clear about how to instantiate the utility class. Finally got it up and running, but replaced the classname string with the actual class. Apache Tika. Pratik Gaurav Pratik Gaurav 5 5 silver badges 6 6 bronze badges. It is better to use two layer validation for files upload. First you can check for the mimeType and validate it. Look the complete test code Java 7 : import java.
File; import javax. Cassio Seffrin Cassio Seffrin 4, 36 36 silver badges 41 41 bronze badges. If you are working with a Servlet and if the servlet context is available to you, you can use : getServletContext. Ramishka Dasanayaka Ramishka Dasanayaka 3 3 silver badges 8 8 bronze badges. What is getServletContext? Samuel Prevost Samuel Prevost 1 1 gold badge 7 7 silver badges 26 26 bronze badges. Simple and Best option retrieve the content mime type from the file location.
Use this imports import java. Files; import java. Sathia Sathia 5, 4 4 gold badges 40 40 silver badges 61 61 bronze badges. MultipartFile file. Ahmad R. Nazemi Ahmad R. Nazemi 8 8 silver badges 23 23 bronze badges.
A solution to detecting a file's Media Type 1 has the following parts: A list of file signatures see Kessler's list , Wikipedia's list , and Space Maker's list A list of Media Types A map of Media Types to file name extensions Comparing file signatures against File , Path , or InputStream data sources Please remember to give credit if you copy the code.
FileInputStream; import java. IOException; import java. InputStream; import java. Path; import java. LinkedHashMap; import java. Map; import static com. File; import java. Path; import static MediaType. Sneaky sneak. Short library review: Apache Tika -- kb bloat, needs multiple lines to configure, and multiple JAR files. MimeUtil2 -- Fairly large, didn't work out-of-the-box. MimetypesFileTypeMap -- Bundled with activation. Dave Jarvis Dave Jarvis This will work, but is IMO a bad practice as it ties your code to a specific OS and requires the external utility to be present at the system running it.
Don't get me wrong; it's a fully valid solution, but breaks portability - which is one of the main reasons to use Java in the first place ToVine: For the record, I'm going to respectfully disagree. Not every Java program is required to be portable.
Let context and the programmer make that decision. After trying various other libraries I settled with mime-util. Siva Prasad Reddy K. Siva Prasad Reddy Vazgen Torosyan Vazgen Torosyan 1, 1 1 gold badge 10 10 silver badges 24 24 bronze badges. This method Files. Thanks, only I can't understand why some users did down vote — Vazgen Torosyan. While this code may solve the question, including an explanation really helps to improve the quality of your post.
I did it with following code. BufferedReader; import java. InputStreamReader; import java. HttpURLConnection; import java. Lorenzo Lorenzo 5 5 silver badges 15 15 bronze badges. MIsmail MIsmail 35 8 8 bronze badges. The Overflow Blog. Podcast Making Agile work for data science. Stack Gives Back Photopea is one of the best online programs that can open, edit and convert PSD files. Another free image viewer and converter allows you to open PSD files. It can also do some basic editing on a PSD file.
It allows you to open and convert PSD files for free with ease. This post gives an introduction to Microsoft Photos app. Learn how to access, download and install, uninstall and reinstall Microsoft Photos app on Windows IrfanView is also a free image viewer and converter.
You can use it to open and view PSD file. Returns the media subtype. If multiple parameters with the same attributes are necessary use withParameters com. String, java. Prefer withCharset java. Charset for setting the charset parameter when using a Charset object. Only one charset parameter will be present on the new instance regardless of the number set on this one. If a charset must be specified that is not supported on this JVM and thus is not representable as a Charset instance, use withParameter java.
The subtype of the argument is the wildcard or equal to the subtype of this instance. All of the parameters present in the argument are present in this instance. Creates a new media type with the given type and subtype. Returns true if either the type or subtype is the wildcard.
0コメント