JDBCTest.java 源代码如下：
package com.jdbc.entity;import java.io.InputStream;import java.sql.Connection;import java.sql.Date;import java.sql.Driver;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;import java.util.List;import java.util.Properties;import org.junit.Test;public class JDBCTest { public Connection getConnection() throws Exception{ String driverClass = null; String jdbcUrl = null; String user = null; String password = null; //读取类路径下的 jdbc.properties 文件 InputStream in = getClass().getClassLoader().getResourceAsStream("jdbc.properties"); Properties properties = new Properties(); properties.load(in); driverClass = properties.getProperty("driver"); jdbcUrl = properties.getProperty("jdbcUrl"); user = properties.getProperty("user"); password = properties.getProperty("password"); Driver driver = (Driver) Class.forName(driverClass).newInstance(); Properties info = new Properties(); info.put("user", user); info.put("password", password); //通过 Driver 的 connect 方法获取数据库连接. Connection connection = driver.connect(jdbcUrl, info); return connection; } @Test public void testGetConnection() throws Exception{ System.out.println(getConnection()); }}package com.jdb 
