[TUT] How To Use JDBC In Your Plugins (MySQL Databases)

Discussion in 'Resources' started by cheese5505, Oct 28, 2011.

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    I was looking around, and i couldn't find a good tutorial on how to use MySQL in your plugins. Eventually, i found out. So i'm gonna show you how!

    First, we need to make 3 variables:
    1. String user = "YOUR_USER";
    2. String pass = "YOUR_PASSWORD";
    3. String url = "jdbc:mysql://localhost:3306/database"; //localhost: Your MySQL host, 3306: Your MySQL port (3306 is the main), database: Your MySQL database

    Now, we need to make the function/whatever you call it:
    1. public void SampleFunction() throws SQLException { //Change "SampleFunction" to your own function name (Can be anything, unless it already exists)
    2. Connection conn = DriverManager.getConnection(url, user, pass); //Creates the connection
    3. PreparedStatement sampleQueryStatement = conn.prepareStatement("YOUR QUERY"); //Put your query in the quotes
    4. sampleQueryStatement.executeUpdate(); //Executes the query
    5. sampleQueryStatement.close(); //Closes the query
    6. conn.close(); //Closes the connection
    7. }

    Now, we need to add this into the onEnable() (Or a command, etc)
    1. public void onEnable() {
    2. try {
    3. create_tablesConnect(); //Runs the function
    4. } catch (SQLException e) {
    5. e.printStackTrace();
    6. }
    7. }

    So, thats about it for using JDBC in your plugins. In the future, i will be making a more advanced tutorial, where you can get your user, pass and url from a config file. Thanks for reading! I hope this helped you. If i missed something or have a request, tell me in the comments!
    Github Examples
    mine-care and acuddlyheadcrab like this.
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    Thanks been looking to implement MYSQL into some of my plugins, however 2 things do we need a library/external jar for this if so where do we get it? and secondly any tutorials on queries or how to add and retrieve stuff from the database :D Thank you
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    1: You only need to import *looks at code*
    1. import java.sql.Connection;
    2. import java.sql.DriverManager;
    3. import java.sql.PreparedStatement;
    4. import java.sql.SQLException;

    2: Ill add that, thanks!

    Also, if anyone needs help, and if there getting errors, check this out: http://dev.bukkit.org/paste/4178/ I know theres probally a better way, i just do it this way anyways :3

    Also, ill be doing some other tutorials, like saying /create and it creates some tables.
  4. I advise you to look into database pooling also, more efficent.
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    I Probally Will.
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    Hi cheese, are you planning on continuing with this tut? its bloody useful :)

    For anyone that gets stuck trying to add a Auto increment, you must also set KEY:

    public void create_tables() throws SQLException
            Connection conn = DriverManager.getConnection(url, user, pass);
            PreparedStatement sampleQueryStatement = conn.prepareStatement("CREATE TABLE users (p_id int NOT NULL AUTO_INCREMENT KEY)");
    EDIT by Moderator: merged posts, please use the edit button instead of double posting.
    Last edited by a moderator: May 20, 2016
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    I will be, but right now is a busy time. I'm going to college, but I'll still update.
    Thanks! I'll add that in, zh00 get cr3dit
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    Can someone explain to me what exactly I should be putting here?
    FlamingArmor likes this.
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    For user var, put your MySQL username, for pass, put your MySQL password, and for URL, replace "localhost" with your MySQL hosname, and replace "database" with your MySQL database name.
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    Uh. Never mind I guess. I clear have no idea how to make sense of this.
    FlamingArmor likes this.
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