Using Database Toolbox Interface for MongoDB in a Matlab Web App

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Christian Idzik
Christian Idzik 2022-1-11
评论： Kojiro Saito 2022-1-13
Hi everyone,
I want to implement a simple GUI in Matlab's App Designer which acceses a MongoDB using the Database Toolbox Interface for MongoDB.
This works fine in the App Designer. Next, I compiled my GUI to a Matlab Web App. No error occurred during the compilation. However, an error is thrown during the runtime of the web app.
The error occurs when I try to connect to the database. I suspect that I need to somehow add the interface for MongoDB into the package to compile. But I have no idea how to do that, because only a mongodb.mlpkginstall can be downloaded in the file exchange.
Does anyone have any idea where the problem comes from and how to solve it?
Thank you all in advance!!!!
---
Here the simple code:
server = "111.222.33.44";
port = 27017;
dbname = "test";
app.conn = mongo(server,port,dbname);
In the Web App I got the following error message:
line 65 in my web app is app.conn = mongo(server, port, dbname)

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回答（1 个）

Kojiro Saito
Kojiro Saito 2022-1-13
JDBC driver of Mongo DB might not be included in your package file.
Aftere installing mlpkginstall file, the JDBC driver will be found in
C:\ProgramData\MATLAB\SupportPackages\R2020b\3P.instrset\mongodb.instrset\MongoDriver
as of Windows OS.
Please include this folder in "Files required for your app to run" setting of Web App Compiler, then package it again.
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Christian Idzik
Christian Idzik 2022-1-13
Ah okay I found out that you can type matlabshared.supportpkg.getSupportPackageRoot in the command line to get the location of the SupportPackages

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