配置文件jdbc.properties
1
2
3
4
5
6
7
8
9
10
11
|
##MySQL
driver=com.mysql.jdbc.Driver
url=jdbc\:mysql\:///ake?useUnicode\= true &characterEncoding\=UTF-8
username=root
password =1234
##Oracle
#driver=oracle.jdbc.driver.OracleDriver
#url=jdbc:oracle:thin:@127.0.0.1:1521:orcl
#username=scott
# password =tiger
|
简单的讲一下。配置文件写了MySQL和Oracle的数据库信息,我的数据库是mysql 所以我把oracle的配置信息注释掉了。
接下来就是一个单例(饿汉式)的获得数据库连接方法工具类
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
package Studying.d15;
import java.io.FileInputStream;
import java.sql. Connection ;
import java.sql.DriverManager;
import java.util.Properties;
public class ConnUtils {
private static Connection con = null ;
static {
try {
Properties p = new Properties();
p. load ( new FileInputStream( "jdbc.properties" ) );
String driver = p.getProperty( "driver" );
String url = p.getProperty( "url" );
String username = p.getProperty( "username" );
String password = p.getProperty( "password" );
System. out .println(url+ "," +driver);
Class.forName(driver);
con = DriverManager.getConnection(url, username, password );
} catch (Exception e) {
e.printStackTrace();
}
}
public static Connection getConnection(){
return con;
}
}
|
以上就是mysql 之通过配置文件链接数据库的实例详解,如有疑问请留言或者到本站社区交流讨论,感谢阅读,希望能帮助到大家,谢谢大家对本站的支持!
原文链接:http://blog.csdn.net/weixin_37720904/article/details/76339924