jdbc 使用properties导入数据库信息1

package day01;
import java.io.FileInputStream;import java.io.InputStream;import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.Statement;import java.util.Properties;
public class TestClassLoad {public static void main(String[] args) throws Exception{InputStream in = new FileInputStream("jdbc.properties");Properties properties = new Properties();properties.load(in);String driverName = properties.getProperty("driverName");System.out.println(driverName);Class.forName(driverName);String url = properties.getProperty("url");String user = properties.getProperty("user");String password = properties.getProperty("password");Connection con = DriverManager.getConnection(url,user,password);Statement st = con.createStatement();String sql = "select ename,empno,sal　from emp";ResultSet rs = st.executeQuery(sql);while (rs.next()) {System.out.println(rs.getString("ename")+ " "+rs.getString("empno")+" "+rs.getString("sal"));}rs.close();st.close();con.close();}}

//jdbc.propertiesdriverName=oracle.jdbc.OracleDriverurl=jdbc:oracle:thin:@localhost:1521:orcluser=scottpassword=tiger