引入包的时候,import java.sql.*和分别引入有区别么
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package sqlconn;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class SqlConn {
//杩炴帴鏁版嵁搴�
//
String url = "jdbc:sqlserver://localhost:1433; DatabaseName=CoutureOL";
String username="sa"; // 鐧诲綍鍚�
String userpwd="123456"; // 鏁版嵁搴撶橱褰曞瘑镰�
Connection conn;
public void setConn() throws SQLException,ClassNotFoundException{
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
conn = DriverManager.getConnection(url,username,userpwd);
}
public Connection getConn() throws SQLException, ClassNotFoundException {
setConn();
return conn;
}
}
