Prepared Statements
After discovering the SQL injection vulnerability, CityBook Libraries needs you to secure the book search feature. You'll switch from simple Statement objects to PreparedStatement to prevent injection attacks.
The HikariSetup class is already configured.
Cet exercice fait partie du cours
Querying a PostgreSQL Database in Java
Instructions
- Use a placeholder for the title parameter.
- Create a
PreparedStatementfrom the connection. - Set the
titleparameter for the prepared statement.
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
public class Main {
public static void main(String[] args) throws SQLException {
HikariDataSource ds = HikariSetup.createDataSource();
// Set the parameter in the query
String query = "SELECT * FROM books WHERE title = ____";
// Create the prepared statement
try (Connection conn = ds.getConnection();
PreparedStatement pstmt = ____.____(query)) {
// Set the title parameter
pstmt.____(____, "Clean Code");
try (ResultSet rs = pstmt.executeQuery()) {
while (rs.next()) {
System.out.printf("ID: %d, Title: %s (%d)%n", rs.getInt("book_id"), rs.getString("title"), rs.getInt("publication_year"));
}
}
}
}
}