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Java Endpoints

I have receive this :Exceptionorg.sql2o.Sql2oException: Could not acquire a connection from DataSource

public class App { public static void main(String[] args) { String connectionString = "jdbc:h2:~/reviews.db:INIT=RUNSCRIPT from 'classpath:db/init.sql"; Sql2o sql2o = new Sql2o(connectionString, "", ""); CourseDao courseDao = new Sql2oCourseDao(sql2o); Gson gson = new Gson();

    post("/courses", "application/json", (req, res) -> {
        Course course = gson.fromJson(req.body(), Course.class);
        return null;
    } , gson::toJson);

    get("/courses", "application/json", (req, res) -> courseDao.findAll(), gson::toJson);

    get("/courses/:id", "application/json", (req, res) -> {
        int id;
        id = Integer.parseInt(req.params("id"));
        // TO DO: What if this not found
        Course course = courseDao.findById(id);

        return null;

    after((req, res) -> {


Seth Kroger
Seth Kroger
56,413 Points

Could you share the code you're working on? The connection string can be quite touchy about formatting.

I copy-pasted the main class

3 Answers

Cindy Lea
Cindy Lea
Courses Plus Student 6,497 Points

I read some other posts & people with this error solved it by:

  • restarting computer
  • check for a file called $appname.xml & see if its correct

Dont know if this will help you, but passing along

It didn't work with the restart, but thanks :)

found the problem, I've put ":" instead of ";". wrong : String connectionString = "jdbc:h2:~/reviews.db:INIT=RUNSCRIPT from 'classpath:db/init.sql"; correct :String connectionString = "jdbc:h2:~/reviews.db;INIT=RUNSCRIPT from 'classpath:db/init.sql'";