| // Get username from parameters | |
| String username = request.getParameter("username"); | |
| // Create a statement from database connection | |
| Statement statement = connection.createStatement(); | |
| // Create unsafe query by concatenating user defined data with query string | |
| String query = "SELECT secret FROM Users WHERE (username = '" + username + "' AND NOT role = 'admin')"; | |
| // ... OR ... | |
| // Insecurely format the query string using user defined data | |
| String query = String.format("SELECT secret FROM Users WHERE (username = '%s' AND NOT role = 'admin')", username); | |
| // Execute query and return the results | |
| ResultSet result = statement.executeQuery(query); |