I am uploading some files to the server using the spring boot application. This upload functionality supports SVG file uploading also. But recently I have been facing security risks. A malicious user could upload an SVG file with JavaScript code. How can I detect which SVG file contains JS code?
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I have spend lots of time to understand the internal working of a multipart file upload in spring boot.
Couldn't get a clear picture on it.
Bit confused about the role of spring boot tmp directory.
I have a tmp directory named as /tmp/tomcat.4296537502689403143.8587/work/Tomcat/localhost/ROOT]
I was checked the tmp directory during the file upload, couldn't write anything here.If i delete the folder it will throw multipart error.
Can anyone explain the internal working of a file upload and the role of tmp directory.
Spring boot web framework comes with embedded web servers: Tomcat by default. Tomcat creates/uses the tmp directory to store temporary files; including uploaded files, session files, and other files.
That behavior can be changed through configuration. Alternatively, you can also configure spring boot to use a different web server.
https://github.com/spring-projects/spring-boot/blob/70eee612ff2a2b1e58cbcb18a4d46e464895c18a/spring-boot/src/main/java/org/springframework/boot/context/embedded/tomcat/TomcatEmbeddedServletContainerFactory.java
I have a spring project where the user will upload their files. Other users are going to pay to download that file. What is the best way to achieve this? I'm thinking of converting it to bytes and store it to database. I don't want to directly store the file in some folder in the project. Is there any other way?
You should take a look at the community/companion project Spring Content.
If you are familiar with Spring Data then this project is for unstructured data (i.e. documents, images, videos, etc) what Spring Data is for structured data.
Like Spring Data, it provides a simple, labor-saving programming interface that allows you very quickly and easily create REST APIs for uploading/downloading content, associating that content with Spring Data entities should you want to, and managing it all on the filesystem, or as BLOBs in the database, or in the cloud in something like S3.
Spring Content will provide a programming/modeling framework that should enable you to easily create a content management site with its content behind a paywall.
I am working with angular5 app with backend in spring java , I need to create PDF (exam form preview pdf) , can you please suggest me on which side is preferable (client or server) ? if on client then suggest me any ng5 package .
On server side. There are a lot of examples how to create pdf in java. Simply google it. Here are few of them.
Spring MVC - Generate PDF Example
Generate PDF Using Spring Framework
Creating PDF Files in Java
I'm using JHipster in a project and would like to know how it renames resources files as javascript and image for caching in web browser. I didn't found any maven configuration for doing this.
I would like to know this because when it generates a production war my main image file is renamed, so this is difficulting reference the image url in email's html. Perhaps I can reference the new name in Java source.
Is there any jar file available for uploading and downloading files in spring framework.Am searching for one to which we can pass our selected files then it can upload the files to server location.
Check out Spring's multipart (fileupload) support:
Spring has built-in multipart support to handle fileuploads in web applications. The design for the multipart support is done with pluggable MultipartResolver objects, defined in the org.springframework.web.multipart package. Out of the box, Spring provides a MultipartResolver for use with Commons FileUpload (http://jakarta.apache.org/commons/fileupload). How uploading files is supported will be described in the rest of this chapter.
It explains everything you need for file upload, hope that helps.