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Java url to temp file

By | 06.10.2020

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Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I need to create a File object from URL object My requirement is I need to create a file object of a web image say googles logo.

Something like this:. Learn more. Asked 8 years, 4 months ago. Active 2 months ago. Viewed k times. Could you elaborate? What are you trying to achieve? Active Oldest Votes. Costi Ciudatu Costi Ciudatu A file by definition needs to be stored on some file system.

You would need some in-memory file system in order to end up with a file that is not persisted. My feeling is that your requirement needs some second thought Namely, assuming you need to call a method like processImage File fthis should be changed to processImage BufferedImage img or processImage InputStream is.

Either of these changes would spare you of storing external images on the local FS. So from this point of view, the two answers are exactly the same. FileUtils FileUtils. Jan Nielsen 7, 8 8 gold badges 47 47 silver badges 90 90 bronze badges. AdrienBe FileUtils gets an error in Eclipse, it doesn't show an import. And org. Note: add implementation 'commons-io:commons-io Asu Asu 1, 2 2 gold badges 13 13 silver badges 25 25 bronze badges. Liviu T. Arthur bauer Arthur bauer 4 4 silver badges 10 10 bronze badges.

Usually moot since there is usually no query. However, to get just the file, one should use url. Neither getFile or getPath does proper decoding, so the Paths.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I'm looking for a safe way to create a temp file in Java. By safe, I mean the following:. Use File. Learn more. What is a safe way to create a Temp file in Java? Ask Question. Asked 5 years, 5 months ago. Active 8 months ago. Viewed 75k times. By safe, I mean the following: Name should be unique, even under potential race conditions e.

Martin Thoma It will be placed in the temp dir. And with f. Delete on Exit will not delete the file, if the vm exits with an exception. Active Oldest Votes. Stefan Stefan Any problem doing a normal tempFile.

java url to temp file

No, you can do it either way. SRobertJames:No problems.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

I know they taught me this back in the day but I don't remember exactly how to do it now, any help is greatly appreciated. Use an URL instead of File for any access that is not on your local computer.

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Actually, URL is even more generally useful, also for local access use a file: URLjar files, and about everything that one can retrieve somehow. The way above interprets the file in your platforms default encoding. If you want to use the encoding indicated by the server instead, you have to use a URLConnection and parse it's content type, like indicated in the answers to this question. About your Error, make sure your file compiles without any errors - you need to handle the exceptions.

Click the red messages given by your IDE, it should show you a recommendation how to fix it.

1.2 Tabular Data - Working With Data & APIs in JavaScript

Do not start a program which does not compile even if the IDE allows this. Using Apache Commons IO :. I did that in the following way for an image, you should be able to do it for text using similar steps.

This is based on here. Alternatively, you can use Guava's Resources object:. Learn more. How to read a text file directly from Internet using Java? Ask Question.

Asked 8 years, 10 months ago. Active 2 years, 4 months ago. Viewed k times. I am trying to read some words from an online text file. Matthias Braun Active Oldest Votes.

I'm getting an error though Exception in thread "main" java. I'm sorry but I got lost, shouldn't this be easy and able to be done in 2 or 3 lines of code? It looks like your server is configured to don't allow this file to be downloaded. I understand.

java url to temp file

What really worked to me: source: oracle documentation "reading url" import java. Using Apache Commons IO : import org. IOUtils; import java. IOException; import java. InputStream; import java. URL; import java. BullyWiiPlaza 9, 5 5 gold badges 62 62 silver badges 95 95 bronze badges.User interfaces and operating systems use system-dependent pathname strings to name files and directories. This class presents an abstract, system-independent view of hierarchical pathnames.

The first name in an abstract pathname may be a directory name or, in the case of Microsoft Windows UNC pathnames, a hostname. Each subsequent name in an abstract pathname denotes a directory; the last name may denote either a directory or a file. The empty abstract pathname has no prefix and an empty name sequence. The conversion of a pathname string to or from an abstract pathname is inherently system-dependent.

When an abstract pathname is converted into a pathname string, each name is separated from the next by a single copy of the default separator character. The default name-separator character is defined by the system property file. When a pathname string is converted into an abstract pathname, the names within it may be separated by the default name-separator character or by any other name-separator character that is supported by the underlying system. A pathname, whether abstract or in string form, may be either absolute or relative.

An absolute pathname is complete in that no other information is required in order to locate the file that it denotes. A relative pathname, in contrast, must be interpreted in terms of information taken from some other pathname.

By default the classes in the java. This directory is named by the system property user. The parent of an abstract pathname may be obtained by invoking the getParent method of this class and consists of the pathname's prefix and each name in the pathname's name sequence except for the last. Each directory's absolute pathname is an ancestor of any File object with an absolute abstract pathname which begins with the directory's absolute pathname.

Relative pathnames have no prefix. A relative pathname that does not specify a drive has no prefix. Instances of this class may or may not denote an actual file-system object such as a file or a directory.

If it does denote such an object then that object resides in a partition. A partition is an operating system-specific portion of storage for a file system. A single storage device e.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

I write application in Java using SWT. I would like to create unique file name. But I do not want create it on hard drive. Additional functionality: I want to create unique file name in specify folder. From your question I assume you've seen that File. But why not just call the method and then delete the temporary file created?

AS John Oxley's answer suggests. UUID may be a solution as you can use 4 different schemes to create them. Though there is still a small chance of a collision. If you combine a timestamp with a random UUID the chances of any collision becomes vanishingly small. You could try using a GUID for the file name.

This is what i'm using:. The Files utility class provides Files. As with the File. Alternatively, a shutdown-hook, or the File. You can create a file with any name time, GUID, etc and then test it to see if it already exists.

If it does, then try another name to see if it's unique. Unless we start thinking in sniffer processes that want to occupy our new directory or similar things. Learn more. How to create tmp file name with out creating file Ask Question. Asked 10 years, 8 months ago. Active 1 year, 4 months ago.

Viewed 45k times. If you don't create the file, then what do you mean exactly by "unique"? Do you mean, "different from all the other file names in that directory"? I would like to create unique file name: "different from all the other file names in that directory" - exactly.Freelance software engineer, tech enthusiast, early adopter, providing solutions for all kinds of problems, working in Hamburg, Germany Currently creating IaC with CloudFormation on AWS.

java url to temp file

In this short blogpost I will show you how you can download a file from remote onto you local filesystem. We will use Java SE only. You can always add more error handling like Apache StringUtils if you like.

In our case the file will be stored in a the Java temp directory of the filesystem and the path to the file returned. Use curl to download the latest release of a software from Github. Deploying apps to Elastic Beanstalk can bring surprises when using newer Tomcat versions.

java url to temp file

Knowledge base. Java: download file from URL to temp directory. Introduction In this short blogpost I will show you how you can download a file from remote onto you local filesystem.

FileOutputStream ; import java. IOException ; import java. InputStream ; import java. URL ; import java. Test ; import java. File ; import java. URL ; import static org. You May Also Enjoy Download the latest version of a software from Github 2 minute read Use curl to download the latest release of a software from Github.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I've little knowledge of Java. Right now, what I'm doing is:. The part of your post after 'but' is therefore an invalid use of the API. Learn more. Asked 8 years, 4 months ago. Active 5 years, 2 months ago.

Viewed 65k times. Right now, what I'm doing is: new File inputFilePath. Please help me out by suggesting a correct way to get the proper URI for both kind of paths. JJJ HarshG HarshG 1 1 gold badge 2 2 silver badges 8 8 bronze badges. Or might there be other valid prefixes? Active Oldest Votes. Lyle Z Lyle Z 8 8 silver badges 6 6 bronze badges. It does the same thing internally.

How to create temporary file in Java

Which is better - 1. So what should I do convert an URI to path? Your question above is about how to 'construct a string representation of an URI'.

Andrew Thompson Andrew Thompson k 33 33 gold badges silver badges bronze badges. I'd suggest using Apache Commons' StringUtils. Sign up or log in Sign up using Google. Sign up using Facebook.

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