package jdbc;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class tsetJDBC {
public static void main(String[] args) {
ResultSet rst = null;
Statement stmt = null;
Connection conn = null;
try {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/db_book", "root", "root");
System.out.println("connect successful");
stmt = conn.createStatement();
rst = stmt.executeQuery("select * from t_user");
while(rst.next()) {
System.out.println(rst.getString("id"));
System.out.println(rst.getString("userName"));
System.out.println(rst.getString("password"));
}
}catch (ClassNotFoundException e) {
e.printStackTrace();
}catch (SQLException e) {
e.printStackTrace();
}finally {
try {
if(rst != null) {
rst.close();
rst = null;
}
if(stmt != null) {
stmt.close();
stmt = null;
}
if(conn != null) {
conn.close();
conn = null;
}
}catch (SQLException e) {
e.printStackTrace();
}
}
}
}
