配置Spring的Proxool數據源

轉自: http://lavasoft.blog.51cto.com/62575/212616/

配置Spring的Proxool數據源

 

Proxool單獨應用比較麻煩，畢竟自己實現的數據庫連接池管理工具難免有不足之處，因此可以考慮與Spring結合，形成一個DataSource對象來操作數據庫，這樣比較簡單靈活，可靠性也高。

 

下面是在上文例子的基礎上所改寫的，環境如下：

Spring 2.0

proxool-0.9.1

JDK1.5

 

1、寫Spring的配置文件

 

syndsconfig.xml

<?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="Pool_dbname"/> 
                <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>

 

2、寫Spring的上下文環境管理工具

 

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(); 
        } 

        /** 
         * 重新構建Spring應用上下文環境 
         * 
         * @return ApplicationContext 
         */ 
        public static ApplicationContext rebuildApplicationContext() { 
                return new ClassPathXmlApplicationContext("/syndsconfig.xml"); 
        } 

        /** 
         * 獲取Spring應用上下文環境 
         * 
         * @return 
         */ 
        public static ApplicationContext getApplicationContext() { 
                return applicationContext; 
        } 

        /** 
         * 簡單的上下文環境測試 
         */ 
        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、寫測試類

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方式測試 
         * 
         * @throws Exception 
         */ 
        public static void test1() throws Exception { 
                String testsql = "select * from village t where lastid = 346"; 
                //1：註冊驅動類 
                Class.forName("oracle.jdbc.driver.OracleDriver"); 
                //2：創建數據庫連接 
//                Connection conn = DriverManager.getConnection(dburl, user, password); 
                DataSource ds = (DataSource) ApplicationContextUtil.getApplicationContext().getBean("dataSource"); 
                Connection conn = ds.getConnection(); 
                //3：創建執行SQL的對象 
                Statement stmt = conn.createStatement(); 
                //4：執行SQL，並獲取返回結果 
                ResultSet rs = stmt.executeQuery(testsql); 
                //5：處理返回結果，此處打印查詢結果 
                while (rs.next()) { 
                        System.out.print(rs.getLong("id") + "\t"); 
                        System.out.print(rs.getString("name") + "\t"); 
                        System.out.println(); 
                } 
                //6：關閉數據庫連接 
                conn.close(); 
        } 


        public static void main(String[] args) throws Exception { 
                test1(); 
        } 
}

 

控制檯輸出如下：

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  張一村    
5412  張二村    
5413  張三村    
5414  張四村    
5415  南原村    
5416  辛莊村    
5417  凡村    
5418  西陽村    
5419  人馬村    
5420  前關村    
5421  後關村    
5422  趙村    
5423  水淆村    
5424  溝東村    
5425  陳村    
5426  窯店村    
5427  坡頭村    
20588  大安頭    
20589  澗裏村    
20590  人馬寨    
20591  白草村    
20592  窯院村    
20593  寺下村    
20594  反上村    
33651  小安頭     
33652  五花嶺     
33653  東溝     
33654  西溝    
33655  南溝     
33656  王村     
33657  營前    
33659  東陽    
33661  太陽     
33663  豐陽    
33665  宜村    
33667  窯頭    
32225  石原村    
32226  廟上村    
32227  廟窪    
38739  丁管營    
38841  澗西    
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日誌是log4j輸出的。

 

當然，可以在Spring中配置多個DataSource，都沒問題的。

 

----------------------

另外今天有個同事說Proxool不能配置多個連接池，我經過測試，Proxool可以配置多個連接池，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，進行極刑的變態測試，代碼***，目的是爲了將程序高掛，可惜沒掛，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：執行SQL，並獲取返回結果 
                ResultSet rs = stmt.executeQuery("select * from city"); 
                //5：處理返回結果，此處打印查詢結果 
                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：執行SQL，並獲取返回結果 
//                        ResultSet rs2 = stmt2.executeQuery("select * from city"); 
                        ResultSet rs2 = stmt2.executeQuery("select * from lm where lm_id = "+rs.getLong("id")); 
                        //5：處理返回結果，此處打印查詢結果 
                        while (rs2.next()) { 
                                System.out.println(rs2.getLong(1)); 
                        } 
                        System.out.println("<<<<"); 
                        //6：關閉數據庫連接 

                } 
                //6：關閉數據庫連接 
                conn1.close(); 
                conn2.close(); 
                 

//                System.out.println("----------"); 
// 
//                Statement stmt2 = conn2.createStatement(); 
//                //4：執行SQL，並獲取返回結果 
//                ResultSet rs2 = stmt2.executeQuery("select count(*) from lm"); 
//                //5：處理返回結果，此處打印查詢結果 
//                while (rs2.next()) { 
//                        System.out.println(rs2.getLong(1)); 
//                } 
//                //6：關閉數據庫連接 
//                conn2.close(); 


        } 
}

 

輸出如下：

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  鄭州市    
<<<< 
410200  開封市    
<<<< 
410300  洛陽市    
<<<< 
410400  平頂山市    
<<<< 
410500  安陽市    
<<<< 
410600  鶴壁市    
<<<< 
410700  新鄉市    
<<<< 
410800  焦作市    
<<<< 
410881  濟源市    
<<<< 
410900  濮陽市    
<<<< 
411000  許昌市    
<<<< 
411100  漯河市    
<<<< 
411200  三門峽市    
<<<< 
411300  南陽市    
<<<< 
411400  商丘市    
<<<< 
411500  信陽市    
<<<< 
411600  周口市    
<<<< 
411700  駐馬店市    
<<<< 
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應用的例子，可以參看：

http://blog.csdn.net/goodhumor/archive/2008/03/04/2144911.aspx