How to create installer once finished with Java De

问题:

I have finished writing a Java Desktop application with a mySQL database. I want to make the application run outside netbeans and let it be installed on other computers. I know about building the project and creating the runnable jar file, however this requires me to export the database itself to the other computer I want the application to run on. My question is two parts:

1)Is there a way I can create a setup file that also installs the database and the application together?

2)Also my database path is hard coded, does that mean I have to change the code every time I install my application for someone, what is the better way to do that?

Thanks

回答1:

1. Yes. You can use some setup builder, like InnoSetup, for example. Personally, however, I like giving my customers a zip file, which they extract wherever they like. The executable jar should be able to handle everything by itself (I like it where there is no need to install the software, just unpack and run).
2. If it is hardcoded, then yes (but, what do you mean by hardcoded? path to file? ip address?). You should use properties or configuration files for paths and other external things your software depends on. The software should read from those files. Upon startup check for presence of such file(s) - if missing, the user should be shown a window in which the config can be entered.

As for deploying MySQL with your code - consider using a server for that, so that your users are not forced to install MySQL, instead they connect to it over the net. If you need the database only for storing data locally, why not using SQLite or a similar, file-based db engine?

The above answers are just suggestions and more-less reflect the way I am thinking. I would be happy to hear from someone with more experience. Nonetheless, I hope the answers help a little :)

回答2:

I agree with Sorrow.

If I have to use MySQL, it is normally over the net since I don't want to allow my clients pass through the hazzles of installing MySQL themselves. If however you am stuck with using MySQL locally, investigate MySQL unattended installations + NSIS Installer.

If you can use any db you want, I just use javadb/derby. It comes bundled with most Java installations these days and if not all you need is to add a jar file to you application.

As per 'hardcoding' paths, I really don't understand what you mean. You really don't have 'paths' as it were, I am assuming what you mean is connection string. You don't have to hardcode your connection string, just put some parameters in a properties file and construct your connection string from them.

回答3:

1) Is there a way I can create a setup file that also installs the database and the application together?

See my answer to Java based Standalone application.

2) Also my database path is hard coded, does that mean I have to change the code every time I install my application for someone, what is the better way to do that?

Have the DB installer pop a JFileChooser to ask the user where they want to install the DB. Store that path using the JNLP API PersistenceService. Here is my demo. of the PersistenceService.