Android uploads files to the server code instance

Android is still very simple for uploading files. It is the same as uploading in Java. It is basically familiar with the operation output stream and input stream! Another important thing is to configure some content type parameters! If all this is done, uploading will be very simple! The following is an uploaded tool class I wrote:

The parameters are a file file and a URL for uploading. However, it should be noted that because a network request is required, you should not forget to add an access right to the Android client when uploading!

Another point is that you need to pay attention: I am a server-side JavaEE. I found that in the process of uploading, if the file ID name is a Java keyword, there will be many location problems in the process of uploading! So you may not use keywords!

Here is the activity Code:

Layout code:

The above is all the code for uploading pictures on Android. If you want to upload other files, you can modify the filter conditions. At the same time, the file type must be consistent with the file type on the server, otherwise the upload will fail!