dbcp2、c3p0、druid连接池的简单配置

引入Maven依赖

<?xml version="1.0" encoding="UTF-8"?>
<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/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>08-spring</artifactId>
        <groupId>com.taotao</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>day37_jdbc</artifactId>

    <properties>
        <junit.version>4.12</junit.version>
        <spring.version>4.2.4.RELEASE</spring.version>
        <slf4j.version>1.6.4</slf4j.version>
        <mysql.version>5.1.8</mysql.version>
        <dbcp.version>2.1.1</dbcp.version>
        <c3p0.version>0.9.1.2</c3p0.version>
        <druid.version>1.0.9</druid.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-dbcp2</artifactId>
        </dependency>

        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
        </dependency>
    </dependencies>

</project>

配置applicationContext.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.xsd">

    <bean class="org.springframework.jdbc.core.JdbcTemplate" id="jdbcTemplate0">
        <constructor-arg ref="dataSource" name="dataSource"/>
    </bean>

    <bean class="org.springframework.jdbc.core.JdbcTemplate" id="jdbcTemplate1">
        <constructor-arg ref="basicDataSource" name="dataSource"/>
    </bean>

    <bean class="org.springframework.jdbc.core.JdbcTemplate" id="jdbcTemplate2">
        <constructor-arg ref="comboPooledDataSource" name="dataSource"/>
    </bean>

    <bean class="org.springframework.jdbc.core.JdbcTemplate" id="jdbcTemplate3">
        <constructor-arg ref="druidDataSource" name="dataSource"/>
    </bean>

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="url" value="jdbc:mysql://172.28.128.5:3306/spring_day03"/>
        <property name="username" value="ttsc"/>
        <property name="password" value="redhat"/>
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="connectionProperties">
            <props>
                <prop key="useUnicode">yes</prop>
                <prop key="characterEncoding">utf8</prop>
            </props>
        </property>
    </bean>

    <bean class="org.apache.commons.dbcp2.BasicDataSource" id="basicDataSource">
        <property name="url" value="jdbc:mysql://172.28.128.5:3306/spring_day03"/>
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="username" value="ttsc"/>
        <property name="password" value="redhat"/>
        <property name="connectionProperties" value="useUnicode=yes;characterEncoding=utf8"/>
    </bean>

    <bean class="com.mchange.v2.c3p0.ComboPooledDataSource" id="comboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"/>
        <property name="user" value="ttsc"/>
        <property name="password" value="redhat"/>
        <property name="jdbcUrl"
                  value="jdbc:mysql://172.28.128.5:3306/spring_day03?useUnicode=true&amp;characterEncoding=utf-8"/>
    </bean>

    <bean class="com.alibaba.druid.pool.DruidDataSource" id="druidDataSource" destroy-method="close">
        <property name="url" value="jdbc:mysql://172.28.128.5:3306/spring_day03"/>
        <property name="username" value="ttsc"/>
        <property name="password" value="redhat"/>
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="connectionProperties" value="useUnicode=yes;characterEncoding=utf8"/>
    </bean>

</beans>

编写测试代码

package com.itheima.demo1;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import javax.annotation.Resource;
import java.util.Properties;

/**
 * Created by Eric on 3/9/17.
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(value = "classpath:applicationContext.xml")
public class demo1 {

    @Resource(name = "jdbcTemplate0")
    private JdbcTemplate template0;

    @Resource(name = "jdbcTemplate1")
    private JdbcTemplate template1;

    @Resource(name = "jdbcTemplate2")
    private JdbcTemplate template2;

    @Resource(name = "jdbcTemplate3")
    private JdbcTemplate template3;

    @Test
    public void run1() throws Exception {

        Properties properties = new Properties();
        properties.put("useUnicode", "yes");
        properties.put("characterEncoding", "utf8");

        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName("com.mysql.jdbc.Driver");
        dataSource.setUrl("jdbc:mysql://172.28.128.5:3306/spring_day03");
        dataSource.setUsername("ttsc");
        dataSource.setPassword("redhat");
        dataSource.setConnectionProperties(properties);

        JdbcTemplate template = new JdbcTemplate(dataSource);
        template.update("INSERT INTO t_account VALUES (NULL ,?,?)", "小明", 1000);
    }

    @Test
    public void run2() throws Exception {
        template0.update("INSERT INTO t_account VALUES (NULL ,?,?)", "冠希", 1000);
    }

    @Test
    public void run3() throws Exception {
        template1.update("INSERT INTO t_account VALUES (NULL ,?,?)", "小强", 1000);
    }

    @Test
    public void run4() throws Exception {
        template2.update("INSERT INTO t_account VALUES (NULL ,?,?)", "小美", 1000);
    }

    @Test
    public void run5() throws Exception {
        template3.update("INSERT INTO t_account VALUES (NULL ,?,?)", "小六", 1000);
    }
}