CODEWITHSUNDEEP
javamysql
Omar Mohamed
Omar Mohamed

Reputation: 31

how to insert into mysql database with java

i want to insert inputs i take from user into mysql database the connection is right but the insertion gives me error

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ''u_fname', 'u_lname', 'u_uname', 'u_pass', 'u_age', 'u_adderess') values('20','o' at line 1

My code is:

public void adduser(User s) {
   try {
        sql = "insert into users ('u_fname', 'u_lname', 'u_uname', 'u_pass', 'u_age', 'u_adderess')"
                + "values('" + s.getFirstname() + "','" + s.getLastname()
                + "','" + s.getUsername() + "','" + s.getPassword() + "','" + s.getAge() + "','" + s.getAdderss() + "')";
        stmt = conn.createStatement();
        int i = stmt.executeUpdate(sql);
        if (i > 0) {
            System.out.println("ROW INSERTED");
        } else {
            System.out.println("ROW NOT INSERTED");
        }
    } catch (Exception e) {
        System.out.println(e);
    }

}

Upvotes: 3

Views: 38473

Answers (1)

Kum
Kum

Reputation: 333

To insert into mysql, follow these steps-

  1. Create a Java Connection to our example MySQL database. I believe you already took care of it. It will be something like this-

      String myDriver = "org.gjt.mm.mysql.Driver";
  String myUrl = "jdbc:mysql://localhost/test";
  Class.forName(myDriver);
  Connection conn = DriverManager.getConnection(myUrl, "root", "");

  2. Create a SQL INSERT statement, using the Java PreparedStatement syntax. Your PreparedStatement SQL statement will be as following this format-

      String sql = " insert into users (first_name, last_name, date_created, is_admin, num_points)"
    + " values (?, ?, ?, ?, ?)";

  3. Set the fields on our Java PreparedStatement object. It will done as-

      PreparedStatement preparedStmt = conn.prepareStatement(sql);
  preparedStmt.setString (1, s.first_name);
  preparedStmt.setString (2, s.last_name);
  preparedStmt.setDate   (3, s.date_created);
  preparedStmt.setBoolean(4, s.is_admin);
  preparedStmt.setInt    (5, s.num_points);

  4. Execute a Java PreparedStatement.

      preparedStmt.execute();

  5. Close our Java MYSQL database connection.

      conn.close();

  6. Catch any SQL exceptions that may come up during the process.

      catch (Exception e)
  {
  System.err.println("Got an exception!");
  // printStackTrace method 
  // prints line numbers + call stack
  e.printStackTrace();
  // Prints what exception has been thrown 
  System.out.println(e); 
  }

Upvotes: 6

Related Questions