Proxool连接池配置

1、将数据库链接使用的JDBC库文件和连接池使用的proxool.jar库文件放入项目中

2、配置proxool.xml文件，新建一个proxool.xml文件放在项目的WEB-INF目录下

<?xml version="1.0" encoding="ISO-8859-1"?>
<!-- the proxool configuration can be embedded within your own application's.
Anything outside the "proxool" tag is ignored. -->
<something-else-entirely>
  <proxool>
    <alias>public</alias>
    <driver-url>jdbc:oracle:thin:@192.168.9.73:1521:oss</driver-url>
    <driver-class>oracle.jdbc.driver.OracleDriver</driver-class>
    <driver-properties>
      <property name="user" value="upm"/>
      <property name="password" value="upm"/>
    </driver-properties>
    <maximum-connection-lifetime>600000</maximum-connection-lifetime>
    <maximum-connection-count>5</maximum-connection-count>
    <house-keeping-test-sql>select CURRENT_DATE FROM dual</house-keeping-test-sql>
  </proxool>
</something-else-entirely>

3、配置web.xml

<! -- 配置初始化servlet,在web容器加载的时候自动加载配置文件 -->
<servlet>
    <servlet-name>proxoolServletConfigurator</servlet-name>
    <servlet-class>org.logicalcobwebs.proxool.configuration.ServletConfigurator</servlet-class>
    <init-param>
      <param-name>xmlFile</param-name>
      <param-value>WEB-INF/proxool.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<!--配置监控servlet-->   
<servlet>   
      <servlet-name>dbpoolAdmin</servlet-name>    
      <servlet-class>org.logicalcobwebs.proxool.admin.servlet.AdminServlet</servlet-class>
</servlet>
<servlet-mapping>    
      <servlet-name>dbpoolAdmin</servlet-name>    
      <url-pattern>/dbpool</url-pattern>
</servlet-mapping>

4、使用数据库连接池

package com.richinfo.dao.base;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class DBManager {
    private static Logger log = LogManager.getLogger(DBManager.class);

    /**
     * 默认的数据库链接，链接Oss139 统一位置 管理下的对象
     * 
     * @return Connection
     */
    public static Connection getConnection() {

        try {
            Class.forName("org.logicalcobwebs.proxool.ProxoolDriver");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
            return null;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
        Connection conn = null;
        try {
            conn = DriverManager.getConnection("proxool.public");
        } catch (SQLException e) {
            e.printStackTrace();
            log.error("DBManager getConnection null.{}", e);
            return null;
        }
        return conn;
    }

    /**
     * 链接指定的 数据库对象
     * 
     * @param dataBaseName
     * 对象名
     * @return Connection
     */
    public static Connection getConnection(String dataBaseName) {

        try {
            Class.forName("org.logicalcobwebs.proxool.ProxoolDriver");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
            return null;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
        Connection conn = null;
        try {
            conn = DriverManager.getConnection("proxool." + dataBaseName);
        } catch (SQLException e) {
            e.printStackTrace();
            return null;
        }
        return conn;
    }

    public static void close(Connection conn, Statement st, ResultSet rs) {

        try {
            if (rs != null)
                rs.close();
        } catch (Exception e) {
            log.error("DBManager close fail rs. {}", e);
        }
        ;
        try {
            if (st != null)
                st.close();
        } catch (Exception e) {
            log.error("DBManager close fail st. {}", e);
        }
        ;
        try {
            if (conn != null)
                conn.close();
        } catch (Exception e) {
            log.error("DBManager close fail conn. {}", e);
        }
    }
}