两种数据库连接方式

1.spring连接方式
ApplicationContext context =
new ClassPathXmlApplicationContext("spring/sqlserver-context.xml");
BasicDataSource dataSource = (BasicDataSource)context.getBean("dataSource");
try {
conn = dataSource.getConnection();
}catch(SQLException e){
e.printStackTrace();
}
2.javacomm中连接方式
2.1 类
package com.avail.javacomm;

import java.io.IOException;
import java.sql.*;
import java.util.*;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.*;
import org.xml.sax.SAXException;
public class DBConnection {
public static Connection getConncetion(){
Connection conn=null;
DBConnection path=new DBConnection();
String xmlPath=path.getClass().getResource("").toString()+"dbconfig.xml";
Map m=readXML(xmlPath);
String driver=(String)m.get("driver");
String url=(String)m.get("url");
String user=(String)m.get("user");
String pwd=(String)m.get("pwd");
try {
Class.forName(driver);
conn=DriverManager.getConnection(url, user, pwd);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return conn;
}
private static Map readXML(String filePath){
Map map=new HashMap();
try {
Document doc=DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(filePath);
NodeList list=doc.getElementsByTagName("conn");
for(int i=0;i<list.getLength();i++){
Node n=list.item(i);
NodeList templist=n.getChildNodes();
for(int j=0;j<templist.getLength();j++){
map.put(templist.item(j).getNodeName(), templist.item(j).getTextContent());
}
}
} catch (SAXException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ParserConfigurationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return map;
}

}

2.2 xml文件
<!DOCTYPE root>
<root>
<conn>
<driver>com.mysql.jdbc.Driver</driver>
<url>jdbc:mysql://192.168.2.1/pieceworkDb</url>
<user>root</user>
<pwd></pwd>
</conn>
</root>