JDBC_JDBCUtils1.0
时间：2021-07-01 10:21:17
帮助过：11人阅读
cn.JDBCUtils.com;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;
public class JDBCUtils {
private static Properties props =
null;
static{
try{
InputStream in = JDBCUtils.
class.getClassLoader()
.getResourceAsStream("dbconfig.properties"
);
props =
new Properties();
props.load(in);}catch(Exception e){
throw new RuntimeException();
}
try{
Class.forName(props.getProperty("driverClassName"
));
}catch (Exception e) {
throw new RuntimeException();
}
}
public static Connection getConnection()
throws SQLException{
/*
* 1、加载配置文件
* 2、加载驱动类
* 3、调用DriverManager.getConnection()
* */
return DriverManager.getConnection(props.getProperty("url"),props.getProperty("username"), props.getProperty("password"
));
}
}
//四大参数.propertise
driverClassName=com.mysql.jdbc.Driver
url=jdbc\:mysql\://127.0.0.1\:3306/mydb1
username=root
password=123
JDBC_JDBCUtils1.0
标签：code 加载驱动 public rman private class package turn .com
