配置Spring的Proxool数据源

雨点打透心脏的1/2处 2022-02-02 03:51 322阅读 0赞

Proxool单独应用比较麻烦，毕竟自己实现的数据库连接池管理工具难免有不足之处，因此可以考虑与Spring结合，形成一个DataSource对象来操作数据库，这样比较简单灵活，可靠性也高。

下面是在上文例子的基础上所改写的，环境如下：

Spring 2.0

proxool-0.9.1

JDK1.5

**1、写Spring的配置文件**

syndsconfig.xml

**2、写Spring的上下文环境管理工具**

import org.springframework.context.ApplicationContext;  
import org.springframework.context.support.ClassPathXmlApplicationContext;  
  
/\*\*  
\* Created by IntelliJ IDEA.  
\*  
\* @author leizhimin 2009-10-15 10:21:38  
\*/  
public class ApplicationContextUtil \{  
private static ApplicationContext applicationContext;  
  
static \{  
if (applicationContext == null)  
applicationContext = rebuildApplicationContext();  
\}  
  
/\*\*  
\* 重新构建Spring应用上下文环境  
\*  
\* @return ApplicationContext  
\*/  
public static ApplicationContext rebuildApplicationContext() \{  
return new ClassPathXmlApplicationContext( "/syndsconfig.xml");  
\}  
  
/\*\*  
\* 获取Spring应用上下文环境  
\*  
\* @return  
\*/  
public static ApplicationContext getApplicationContext() \{  
return applicationContext;  
\}  
  
/\*\*  
\* 简单的上下文环境测试  
\*/  
public static void main(String\[\] args) \{  
rebuildApplicationContext();  
if (applicationContext == null) \{  
System.out.println( "ApplicationContext is null");  
\} else \{  
System.out.println( "ApplicationContext is not null!");  
\}  
\}  
\}

3、写测试类

import javax.sql.DataSource;  
import java.sql.Connection;  
import java.sql.ResultSet;  
import java.sql.Statement;  
  
  
/\*\*  
\* Created by IntelliJ IDEA.  
\*  
\* @author leizhimin 2009-10-10 17:59:47  
\*/  
public class TestProxool \{  
public static String dburl = "jdbc:oracle:thin:@192.168.104.192:1521:tim";  
public static String user = "tim";  
public static String password = "tim\_8968888";  
  
/\*\*  
\* JDBC方式测试  
\*  
\* @throws Exception  
\*/  
public static void test1() throws Exception \{  
String testsql = "select \* from village t where lastid = 346";  
//1：注册驱动类   
Class.forName( "oracle.jdbc.driver.OracleDriver");  
//2：创建数据库连接   
// Connection conn = DriverManager.getConnection(dburl, user, password);   
DataSource ds = (DataSource) ApplicationContextUtil.getApplicationContext().getBean( "dataSource");  
Connection conn = ds.getConnection();  
//3：创建执行SQL的对象   
Statement stmt = conn.createStatement();  
//4：执行SQL，并获取返回结果   
ResultSet rs = stmt.executeQuery(testsql);  
//5：处理返回结果，此处打印查询结果   
while (rs.next()) \{  
System.out.print(rs.getLong( "id") + "\\t");  
System.out.print(rs.getString( "name") + "\\t");  
System.out.println();  
\}  
//6：关闭数据库连接   
conn.close();  
\}  
  
  
public static void main(String\[\] args) throws Exception \{  
test1();  
\}  
\}

控制台输出如下：

2009-10-15 12:37:03 - INFO org.springframework.core.CollectionFactory - JDK 1.4+ collections available  
2009-10-15 12:37:03 - INFO org.springframework.beans.factory.xml.XmlBeanDefinitionReader - Loading XML bean definitions from class path resource \[syndsconfig.xml\]  
2009-10-15 12:37:04 - INFO org.springframework.context.support.ClassPathXmlApplicationContext - Bean factory for application context \[org.springframework.context.support.ClassPathXmlApplicationContext;hashCode=9737354\]: org.springframework.beans.factory.support.DefaultListableBeanFactory defining beans \[dataSource\]; root of BeanFactory hierarchy  
2009-10-15 12:37:04 - INFO org.springframework.context.support.ClassPathXmlApplicationContext - 1 beans defined in application context \[org.springframework.context.support.ClassPathXmlApplicationContext;hashCode=9737354\]  
2009-10-15 12:37:04 - INFO org.springframework.context.support.ClassPathXmlApplicationContext - Unable to locate MessageSource with name 'messageSource': using default \[org.springframework.context.support.DelegatingMessageSource@10655dd\]  
2009-10-15 12:37:04 - INFO org.springframework.context.support.ClassPathXmlApplicationContext - Unable to locate ApplicationEventMulticaster with name 'applicationEventMulticaster': using default\[org.springframework.context.event.SimpleApplicationEventMulticaster@c8f6f8\]  
2009-10-15 12:37:04 - INFO org.springframework.beans.factory.support.DefaultListableBeanFactory - Pre-instantiating singletons in factory \[org.springframework.beans.factory.support.DefaultListableBeanFactory defining beans \[dataSource\]; root of BeanFactory hierarchy\]  
5411 张一村  
5412 张二村  
5413 张三村  
5414 张四村  
5415 南原村  
5416 辛庄村  
5417 凡村  
5418 西阳村  
5419 人马村  
5420 前关村  
5421 后关村  
5422 赵村  
5423 水淆村  
5424 沟东村  
5425 陈村  
5426 窑店村  
5427 坡头村  
20588 大安头  
20589 涧里村  
20590 人马寨  
20591 白草村  
20592 窑院村  
20593 寺下村  
20594 反上村  
33651 小安头  
33652 五花岭  
33653 东沟  
33654 西沟  
33655 南沟  
33656 王村  
33657 营前  
33659 东阳  
33661 太阳  
33663 丰阳  
33665 宜村  
33667 窑头  
32225 石原村  
32226 庙上村  
32227 庙洼  
38739 丁管营  
38841 涧西  
2009-10-15 12:37:05 - INFO org.logicalcobwebs.proxool.Pool\_dbname - Shutting down 'Pool\_dbname' pool immediately \[Shutdown Hook\]  
2009-10-15 12:37:05 - INFO org.logicalcobwebs.proxool.PrototyperController - Stopping Prototyper thread  
2009-10-15 12:37:05 - INFO org.logicalcobwebs.proxool.HouseKeeperController - Stopping HouseKeeper thread  
  
Process finished with exit code 0

info日志是log4j输出的。

当然，可以在Spring中配置多个DataSource，都没问题的。

\----------------------

另外今天有个同事说Proxool不能配置多个连接池，我经过测试，Proxool可以配置多个连接池，可以放心使用。

配置文件如下小：

<? xml version ="1.0" encoding ="UTF-8" ?>  
< beans  
xmlns ="http://www.springframework.org/schema/beans"  
xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"  
xsi:schemaLocation="http://www.springframework.org/schema/beans  
http://www.springframework.org/schema/beans/spring-beans-2.0.xsd" >  
  
< bean id ="dataSource"  
class ="org.logicalcobwebs.proxool.ProxoolDataSource" >  
< property name ="driver" >  
< value >oracle.jdbc.driver.OracleDriver </ value >  
</ property >  
< property name ="driverUrl" >  
< value >jdbc:oracle:thin:@192.168.104.192:1521:tim </ value >  
</ property >  
< property name ="user" value ="tim" />  
< property name ="password" value ="tim\_8968888" />  
< property name ="alias" value ="proxool.a2" />  
< property name ="maximumActiveTime" value ="300000" />  
< property name ="prototypeCount" value ="0" />  
< property name ="maximumConnectionCount" value ="50" />  
< property name ="minimumConnectionCount" value ="2" />  
< property name ="simultaneousBuildThrottle" value ="50" />  
< property name ="houseKeepingTestSql" value ="select CURRENT\_DATE" />  
</ bean >  
< bean id ="dataSource2"  
class ="org.logicalcobwebs.proxool.ProxoolDataSource" >  
< property name ="driver" >  
< value >oracle.jdbc.driver.OracleDriver </ value >  
</ property >  
< property name ="driverUrl" >  
< value >jdbc:oracle:thin:@192.168.104.164:1521:orcl </ value >  
</ property >  
< property name ="user" value ="rural" />  
< property name ="password" value ="rural" />  
< property name ="alias" value ="proxool.a1" />  
< property name ="maximumActiveTime" value ="300000" />  
< property name ="prototypeCount" value ="0" />  
< property name ="maximumConnectionCount" value ="50" />  
< property name ="minimumConnectionCount" value ="2" />  
< property name ="simultaneousBuildThrottle" value ="50" />  
< property name ="houseKeepingTestSql" value ="select CURRENT\_DATE" />  
</ bean >  
</ beans >

另外，进行极刑的变态测试，代码\*\*\*，目的是为了将程序高挂，可惜没挂，呵呵！

import org.springframework.context.ApplicationContext;  
  
import javax.sql.DataSource;  
import java.sql.Connection;  
import java.sql.SQLException;  
import java.sql.Statement;  
import java.sql.ResultSet;  
  
/\*\*  
\* Created by IntelliJ IDEA.  
\*  
\* @author leizhimin 2009-10-15 17:39:50  
\*/  
public class Test \{  
  
public static void main(String\[\] args) throws SQLException \{  
ApplicationContext ctx = ApplicationContextUtil.getApplicationContext();  
DataSource ds1 = (DataSource)ctx.getBean( "dataSource");  
DataSource ds2 = (DataSource)ctx.getBean( "dataSource2");  
  
Connection conn1 = ds1.getConnection();  
Connection conn2 = ds2.getConnection();  
  
Statement stmt = conn1.createStatement();  
//4：执行SQL，并获取返回结果   
ResultSet rs = stmt.executeQuery( "select \* from city");  
//5：处理返回结果，此处打印查询结果   
while (rs.next()) \{  
System.out.print(rs.getLong( "id") + "\\t");  
System.out.print(rs.getString( "name") + "\\t");  
System.out.println();  
  
Statement stmt2 = conn2.createStatement();  
//4：执行SQL，并获取返回结果   
// ResultSet rs2 = stmt2.executeQuery("select \* from city");   
ResultSet rs2 = stmt2.executeQuery( "select \* from lm where lm\_id = "\+rs.getLong( "id"));  
//5：处理返回结果，此处打印查询结果   
while (rs2.next()) \{  
System.out.println(rs2.getLong(1));  
\}  
System.out.println( "<<<<");  
//6：关闭数据库连接   
  
\}  
//6：关闭数据库连接   
conn1.close();  
conn2.close();  
  
  
// System.out.println("----------");   
//   
// Statement stmt2 = conn2.createStatement();   
// //4：执行SQL，并获取返回结果   
// ResultSet rs2 = stmt2.executeQuery("select count(\*) from lm");   
// //5：处理返回结果，此处打印查询结果   
// while (rs2.next()) \{   
// System.out.println(rs2.getLong(1));   
// \}   
// //6：关闭数据库连接   
// conn2.close();   
  
  
\}  
\}

输出如下：

2009-10-15 18:25:37 - INFO org.springframework.core.CollectionFactory - JDK 1.4+ collections available  
2009-10-15 18:25:37 - INFO org.springframework.beans.factory.xml.XmlBeanDefinitionReader - Loading XML bean definitions from class path resource \[syndsconfig.xml\]  
2009-10-15 18:25:37 - INFO org.springframework.context.support.ClassPathXmlApplicationContext - Bean factory for application context \[org.springframework.context.support.ClassPathXmlApplicationContext;hashCode=6161922\]: org.springframework.beans.factory.support.DefaultListableBeanFactory defining beans \[dataSource,dataSource2\]; root of BeanFactory hierarchy  
2009-10-15 18:25:37 - INFO org.springframework.context.support.ClassPathXmlApplicationContext - 2 beans defined in application context \[org.springframework.context.support.ClassPathXmlApplicationContext;hashCode=6161922\]  
2009-10-15 18:25:37 - INFO org.springframework.context.support.ClassPathXmlApplicationContext - Unable to locate MessageSource with name 'messageSource': using default \[org.springframework.context.support.DelegatingMessageSource@18dfef8\]  
2009-10-15 18:25:37 - INFO org.springframework.context.support.ClassPathXmlApplicationContext - Unable to locate ApplicationEventMulticaster with name 'applicationEventMulticaster': using default\[org.springframework.context.event.SimpleApplicationEventMulticaster@134bed0\]  
2009-10-15 18:25:37 - INFO org.springframework.beans.factory.support.DefaultListableBeanFactory - Pre-instantiating singletons in factory \[org.springframework.beans.factory.support.DefaultListableBeanFactory defining beans \[dataSource,dataSource2\]; root of BeanFactory hierarchy\]  
410100 郑州市  
<<<<  
410200 开封市  
<<<<  
410300 洛阳市  
<<<<  
410400 平顶山市  
<<<<  
410500 安阳市  
<<<<  
410600 鹤壁市  
<<<<  
410700 新乡市  
<<<<  
410800 焦作市  
<<<<  
410881 济源市  
<<<<  
410900 濮阳市  
<<<<  
411000 许昌市  
<<<<  
411100 漯河市  
<<<<  
411200 三门峡市  
<<<<  
411300 南阳市  
<<<<  
411400 商丘市  
<<<<  
411500 信阳市  
<<<<  
411600 周口市  
<<<<  
411700 驻马店市  
<<<<  
2009-10-15 18:25:39 - INFO org.logicalcobwebs.proxool.proxool.a2 - Shutting down 'proxool.a2' pool immediately \[Shutdown Hook\]  
2009-10-15 18:25:39 - INFO org.logicalcobwebs.proxool.proxool.a1 - Shutting down 'proxool.a1' pool immediately \[Shutdown Hook\]  
2009-10-15 18:25:39 - INFO org.logicalcobwebs.proxool.PrototyperController - Stopping Prototyper thread  
2009-10-15 18:25:39 - INFO org.logicalcobwebs.proxool.HouseKeeperController - Stopping HouseKeeper thread  
  
Process finished with exit code 0

如果大家想看Web应用的例子，可以参看：

[http://blog.csdn.net/goodhumor/archive/2008/03/04/2144911.aspx][http_blog.csdn.net_goodhumor_archive_2008_03_04_2144911.aspx]

本文转自 leizhimin 51CTO博客，原文链接：http://blog.51cto.com/lavasoft/212616，如需转载请自行联系原作者

[http_blog.csdn.net_goodhumor_archive_2008_03_04_2144911.aspx]: http://blog.csdn.net/goodhumor/archive/2008/03/04/2144911.aspx