四大流行的java连接池之BoneCP篇

BoneCP 是一个开源的快速的 JDBC 连接池。BoneCP很小，只有四十几K（运行时需要log4j和Google Collections的支持，这二者加起来就不小了），而相比之下C3P0 要六百多K。另外个人觉得 BoneCP 有个缺点是，JDBC驱动的加载是在连接池之外的，这样在一些应用服务器的配置上就不够灵活。

Bonecp是一个快速的，免费的，开放源代码的java数据库连接池资源库。

BoneCPConfig类可以用来手动设置连接池及其属性，

Class.forName("org.hsqldb.jdbcDriver");       // load the DB driver

        BoneCPConfig config = new BoneCPConfig();     // create a new configuration object

        config.setJdbcUrl("jdbc:hsqldb:mem:test");    // set the JDBC url

        config.setUsername("sa");                     // set the username

        config.setPassword("");                               // set the password

        config.setXXXX(...);                          // (other config options here)

        BoneCP connectionPool = new BoneCP(config);   // setup the connection pool

        Connection connection;

        connection = connectionPool.getConnection();  // fetch a connection

        ...  do something with the connection here ...

        connection.close();                           // close the connection

        connectionPool.shutdown();                    // close the connection pool

datasource格式创建连接池，

Class.forName("org.hsqldb.jdbcDriver");       // load the DB driver

        BoneCPDataSource ds = new BoneCPDataSource();  // create a new datasource object

        ds.setJdbcUrl("jdbc:hsqldb:mem:test");                // set the JDBC url

        ds.setUsername("sa");                         // set the username

        ds.setPassword("");                           // set the password

        ds.setXXXX(...);                              // (other config options here)

        Connection connection;

        connection = ds.getConnection();              // fetch a connection

        ...  do something with the connection here ...

        connection.close();                           // close the connection

        ds.close();                                   // close the datasource pool

基于spring的代码，

Application Context

<!-- BoneCP configuration -->

<bean id="mainDataSource" class="com.jolbox.bonecp.BoneCPDataSource" destroy-method="close">

   <property name="driverClass" value="com.mysql.jdbc.Driver" />

   <property name="jdbcUrl" value="jdbc:mysql://127.0.0.1/yourdb" />

   <property name="username" value="root"/>

   <property name="password" value="abcdefgh"/>

   <property name="idleConnectionTestPeriod" value="60"/>

   <property name="idleMaxAge" value="240"/>

   <property name="maxConnectionsPerPartition" value="30"/>

   <property name="minConnectionsPerPartition" value="10"/>

   <property name="partitionCount" value="3"/>

   <property name="acquireIncrement" value="5"/>

   <property name="statementsCacheSize" value="100"/>

   <property name="releaseHelperThreads" value="3"/>

</bean>

Code:

Make sure you define theclass below (either via explicit listing of the class name or via<component-scan>.

@Component

public class Foo {

@Autowired

DataSource ds;

 public void testBoneCP() throws SQLException {

    Connection connection = ds.getConnection();

    System.out.println(connection); // do something with the connection here..

 }

}

基于spring+hibernate的方式

<!-- Hibernate SessionFactory -->

<bean id="sessionFactory" class="org.springframework.orm.hibernate.LocalSessionFactoryBean" autowire="autodetect">

        <property name="hibernateProperties">

               <props>

                       <prop key="hibernate.connection.provider_class">com.jolbox.bonecp.provider.BoneCPConnectionProvider</prop>

                       <prop key="hibernate.connection.driver_class">com.mysql.jdbc.Driver</prop>

                       <prop key="hibernate.connection.url">jdbc:mysql://127.0.0.1/yourdb</prop>

                       <prop key="hibernate.connection.username">root</prop>

                       <prop key="hibernate.connection.password">abcdefgh</prop>

                       <prop key="bonecp.idleMaxAge">240</prop>

                       <prop key="bonecp.idleConnectionTestPeriod">60</prop>

                       <prop key="bonecp.partitionCount">3</prop>

                       <prop key="bonecp.acquireIncrement">10</prop>

                       <prop key="bonecp.maxConnectionsPerPartition">60</prop>

                       <prop key="bonecp.minConnectionsPerPartition">20</prop>

                       <prop key="bonecp.statementsCacheSize">50</prop>

                       <prop key="bonecp.releaseHelperThreads">3</prop>

               </props>

        </property>

</bean>

基于spring+lazydatasource的方式，

<!-- Hibernate SessionFactory -->

            <bean id="sessionFactory" class="..." autowire="autodetect">

            <!-- Tell hibernate to use our given datasource -->

                <property name="dataSource" ref="dataSource" /> 

                <property name="hibernateProperties">

                    <props>

                        <prop key="hibernate.dialect">...</prop>

                        ...

                    </props>

                </property>

            </bean>

            <!-- Spring bean configuration. Tell Spring to bounce off BoneCP -->

            <bean id="dataSource"

                class="org.springframework.jdbc.datasource.LazyConnectionDataSourceProxy">

                <property name="targetDataSource">

                    <ref local="mainDataSource" />

                </property>

            </bean>

            <!-- BoneCP configuration -->

            <bean id="mainDataSource" class="com.jolbox.bonecp.BoneCPDataSource" destroy-method="close">

                <property name="driverClass" value="com.mysql.jdbc.Driver" />

                <property name="jdbcUrl" value="jdbc:mysql://127.0.0.1/yourdb" />

                <property name="username" value="root"/>

                <property name="password" value="abcdefgh"/>

                <property name="idleConnectionTestPeriod" value="60"/>

                <property name="idleMaxAge" value="240"/>      

                <property name="maxConnectionsPerPartition" value="60"/>

                <property name="minConnectionsPerPartition" value="20"/>

                <property name="partitionCount" value="3"/>

                <property name="acquireIncrement" value="10"/>                              

                <property name="statementsCacheSize" value="50"/>

                <property name="releaseHelperThreads" value="3"/>

            </bean>

Jdbc example

The full source code of this example project can befound here:

• examplejdbc-1.0.0-project.tar.bz2
• examplejdbc-1.0.0-project.zip
• examplejdbc-1.0.0-project.tar.gz

You will need Apache Maven to automatically includethe required jar files into your classpath. Alternatively you may add therequired JAR files manually.

package com.jolbox;

import java.sql.Connection;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

import com.jolbox.bonecp.BoneCP;

import com.jolbox.bonecp.BoneCPConfig;

/** A test project demonstrating the use of BoneCP in a JDBCenvironment.

* @author wwadge

*

*/

public class ExampleJDBC {

/** Start test

* @param args none expected.

*/

public static voidmain(String[] args) {

BoneCPconnectionPool = null;

Connectionconnection = null;

try {

// load thedatabase driver (make sure this is in your classpath!)

Class.forName("org.hsqldb.jdbcDriver");

} catch (Exceptione) {

e.printStackTrace();

return;

}

try {

// setup theconnection pool

BoneCPConfigconfig = new BoneCPConfig();

config.setJdbcUrl("jdbc:hsqldb:mem:test");// jdbc url specific to your database, eg jdbc:mysql://127.0.0.1/yourdb

config.setUsername("sa");

config.setPassword("");

config.setMinConnectionsPerPartition(5);

config.setMaxConnectionsPerPartition(10);

config.setPartitionCount(1);

connectionPool= new BoneCP(config); // setup the connection pool

connection =connectionPool.getConnection(); // fetch a connection

if(connection != null){

System.out.println("Connectionsuccessful!");

Statementstmt = connection.createStatement();

ResultSet rs =stmt.executeQuery("SELECT 1 FROM INFORMATION_SCHEMA.SYSTEM_USERS");// do something with the connection.

while(rs.next()){

System.out.println(rs.getString(1));// should print out "1"'

}

}

connectionPool.shutdown();// shutdown connection pool.

} catch(SQLException e) {

e.printStackTrace();

} finally {

if(connection != null) {

try{

connection.close();

}catch (SQLException e) {

e.printStackTrace();

}

}

}

}

}

If you use Maven, the following should besufficient to pull in the JAR files required into your classpath:

<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/maven-v4_0_0.xsd">

<modelVersion>4.0.0</modelVersion>

<groupId>com.jolbox</groupId>

<artifactId>examplejdbc</artifactId>

<name>Example JDBCProject</name>

<version>1.0.0</version>

<description>ExampleJDBC project</description>

<dependencies>

<dependency>

<groupId>com.jolbox</groupId>

<artifactId>bonecp</artifactId>

<version>0.6.5</version>

<scope>compile</scope>

</dependency>

<!-- This is the HSQLDBdatabase in use by this test. Replace with MySQL, PostgreSQL etc here if youwish. -->

<dependency>

<groupId>hsqldb</groupId>

<artifactId>hsqldb</artifactId>

<version>1.8.0.10</version>

<scope>compile</scope>

</dependency>

</dependencies>

<repositories>

<repository>

<releases>

<enabled>true</enabled>

</releases>

<id>bonecp-repo</id>

<name>BoneCPRepository</name>

<url>http://jolbox.com/bonecp/downloads/maven</url>

</repository>

</repositories>

</project>