请问使用JDBC 和JNDI连接数据库哪个更有优势?

发布网友 发布时间：2022-04-07 18:50

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懂视网 时间：2022-04-07 23:11

<?xml version=‘1.0‘ encoding=‘utf-8‘?>
<!--
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 this work for additional information regarding copyright ownership.
 The ASF licenses this file to You under the Apache License, Version 2.0
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 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-->
<!-- The contents of this file will be loaded for each web application -->
<Context>

 <!-- Default set of monitored resources -->
 <WatchedResource>WEB-INF/web.xml</WatchedResource>
 
 <!-- Uncomment this to disable session persistence across Tomcat restarts -->
 <!--
 <Manager pathname="" />
 -->

 <!-- Uncomment this to enable Comet connection tacking (provides events
  on session expiration as well as webapp lifecycle) -->
 <!--
 <Valve className="org.apache.catalina.valves.CometConnectionManagerValve" />
 -->

--红色字体是需要根据数据库名配置
<Resource name="jdbc/liuyan" auth="Container"
type="javax.sql.DataSource" maxActive="100"
maxIdle="30" maxWait="10000" username="epet" password="123456"
driverClassName="oracle.jdbc.driver.OracleDriver"
url="jdbc:oracle:thin:@localhost:1521:orcl"
/>
</Context>

import java.sql.Connection;
import java.sql.SQLException;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;

/** 
 * 文件名：JNDI.java
 * 描 述：这是一个数据库连接类
 * 作 者：WLX
 * 所属项目：MyNews
 * JDK版本：JDK1.7 
 * 创建时间：2015年5月23日 下午2:54:24
 *
*/
public class JNDI {

 public Connection getconn() {
 
 Connection conn = null;
 try {
  
  Context ctx;
  ctx = new InitialContext();
  //java:comp/env/为前缀
  DataSource source = (DataSource)ctx.lookup("java:comp/env/jdbc/liuyan");
 
  Connection connection = source.getConnection();
  if(connection != null){
  conn = connection;
  }
  
 } catch (NamingException e) {
  e.printStackTrace();
 } catch (SQLException e) {
  e.printStackTrace();
 }
 return conn;
 }

}

JNDI连接池连接Oracle数据库

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热心网友 时间：2022-04-07 20:19

热心网友 时间：2022-04-07 21:37