導入jar包

將druid配置文件放到src目錄下

import cn.silence2.domain.Student; import com.alibaba.druid.pool.DruidDataSourceFactory;import javax.sql.DataSource; import java.io.InputStream; import java.sql.Connection; import java.sql.Date; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.util.Properties;/*** java的druid連接*/ public class DruidTest1 {public static void main(String[] args) throws Exception {//獲取配置文件流對象InputStream inputStream = ClassLoader.getSystemClassLoader().getResourceAsStream("druid.properties");Properties prop = new Properties();//將druid配置文件加載到propprop.load(inputStream);//將prop對象傳給druid工廠類，返回一個數據庫連接池對象DataSource dataSource = DruidDataSourceFactory.createDataSource(prop);//通過數據庫連接池對象，建立與數據庫的連接Connection connection = dataSource.getConnection();// sql 語句String sql = "select * from student";//通過數據庫連接獲得執行者對象，對sql語句進行預編譯PreparedStatement prepare = connection.prepareStatement(sql);//執行查詢sql語句，獲得結果集ResultSet resultSet = prepare.executeQuery();while (resultSet.next()) {int sid = resultSet.getInt("sid");String name = resultSet.getString("name");int age = resultSet.getInt("age");Date birthday = resultSet.getDate("birthday");//封裝到studentStudent student = new Student(sid, name, age, birthday);System.out.println(student);}resultSet.close();prepare.close();connection.close();} }

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