//JDBC的封装
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;
public class DBUtil {
private static String url=null;
private static String user=null;
private static String password=null;
static {
Properties properties = new Properties();
try {
properties.load(DBUtil.class.getClassLoader().getResourceAsStream("dbconfig.properties"));
String driver = properties.getProperty("driver");
url = properties.getProperty("url");
user = properties.getProperty("user");
password = properties.getProperty("password");
Class.forName(driver);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public static Connection getConn() {
Connection conn =null;
try {
conn = DriverManager.getConnection(url, user, password);
} catch (SQLException e) {
e.printStackTrace();
}
return conn;
}
public static void close(ResultSet rs,Statement stm,Connection conn) {
if(rs!=null) {
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if(stm!=null) {
try {
stm.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if(conn!=null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
//dbconfig.properties 配置文件
driver =com.mysql.jdbc.Driver
url =jdbc:mysql://localhost:3306/javaee1906
user=root
password=123789
转载于:https://www.cnblogs.com/cqzy/p/11290705.html
相关资源：自己封装的jdbc工具类
