Question

I am Using Java With MySQL (JDBC), and I want to import a dump file to database. what would be the correct way to do this?
I have tried the following code:

// function "connectToDB" connects to the Database, and not the server.
// variable sourcePath refers to the dumpfile.
    Connection con = connectToDB(USERNAME, PASSWORD); 
    String q = "source " + sourcePath;
    System.out.println("Q is: " + q);
    try {
        Statement statement = con.createStatement();
        statement.executeUpdate(q);
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    closeConnection(con);

but i get a MySQLSyntaxErrorException :

You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use
near ‘source C:…\Desktop\dumpfile.sql’ at line 1

Answer 1

Thank everyone for their help, reading Their Ideas, I finally imported the dumpfile.sql
So if anyone has the same problem, A sample code that worked for me is this:

Connection con = connectToDB(USERNAME, PASSWORD);
/* Note that con is a connection to database, and not the server.
if You have a connection to the server, the first command in the dumpfile should be the
USE db_name; */
String q = "";
File f = new File(sourcePath); // source path is the absolute path of dumpfile.
try {
    BufferedReader bf = new BufferedReader(new FileReader(f));
        String line = null;
        line = bf.readLine();
        while (line != null) {
            q = q + line + "\n";
            line = bf.readLine();
        }
    } catch (Exception ex) {
        ex.printStackTrace();
    }
// Now we have the content of the dumpfile in 'q'.
// We must separate the queries, so they can be executed. And Java Simply does this:
String[] commands = q.split(";");

try {
    Statement statement = con.createStatement();
    for (String s : commands) {
        statement.execute(s);
    }
} catch (Exception ex) {
}
closeConnection(con);

EDIT: Adding the connectToDB function:

private Connection connectToDB(String username, String password) {
    try {
        Class.forName("com.mysql.jdbc.Driver");
        String url = "jdbc:mysql://localhost:3306/" + DATABASE;
        Properties objProperties = new Properties();
        objProperties.put("user", username);
        objProperties.put("password", password);
        objProperties.put("useUnicode", "true");
        objProperties.put("characterEncoding", "utf-8");

        Connection con = DriverManager.getConnection(url, objProperties);
        return con;
    } catch (Exception ex) {
        System.out.println("Connection to sql database failed.");
        ex.printStackTrace();
        return null;
    }
}