1. ：
conn_url=jdbc:mysql://localhost:3306/buy?useUnicode=true&characterEncoding=UTF-8
conn_user=root
conn_pwd=root
conn_driver=com.mysql.jdbc.Driver
2. ：
private static Properties prop = new Properties();
static {
try {
prop.load(Config.class
.getResourceAsStream("config.properties"));
} catch (IOException e) {
System.out.println("File:config.properties no find,PLS check out!");
e.printStackTrace();
}
}
public static String CONNECTION_TYPE = prop.getProperty("conn_type");
public static String CONNECTION_URL = prop.getProperty("conn_url");
public static String CONNECTION_USER = prop.getProperty("conn_user");
public static String CONNECTION_PWD = prop.getProperty("conn_pwd");
public static String CONNECTION_DRIVER = prop.getProperty("conn_driver");
}
3. ：
public static Connection getConnection() {
Connection conn = null;
try {
Class.forName(Config.CONNECTION_DRIVER).newInstance();
conn = DriverManager.getConnection(Config.CONNECTION_URL,
Config.CONNECTION_USER, Config.CONNECTION_PWD);
} catch (Exception e) {
e.printStackTrace();
}
if (conn == null) {
System.out.println("no get connection!throws Exception");
}
return conn;
}
}