JDBC四种数据源连接数据库

版权声明：转载请注明原始链接 https://blog.csdn.net/sswqzx/article/details/84073758

maven工程依赖

pom.xml

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
        </dependency>
        <!-- jdbc模板 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
        </dependency>
        <!--Druid-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
        </dependency>

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

        <!--C3p0-->
        <!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>

        <!--DBCP-->
        <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-dbcp2 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-dbcp2</artifactId>
            <version>2.1.1</version>
        </dependency>

    </dependencies>

TestJdbcTemplate.java

package com.day03.test;

import com.alibaba.druid.pool.DruidDataSource;
import com.mchange.v2.c3p0.ComboPooledDataSource;
import org.apache.commons.dbcp2.BasicDataSource;
import org.junit.Test;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DriverManagerDataSource;

import java.beans.PropertyVetoException;

/**
 * @ Author     ：ShaoWei Sun.
 * @ Date       ：Created in 19:18 2018/11/14
 */

public class TestJdbcTemplate {

    //DBCP连接池
    @Test
    public void test0(){
        //dbcp连接池核心类
        BasicDataSource dataSource = new BasicDataSource();
        dataSource.setDriverClassName("com.mysql.jdbc.Driver");
        dataSource.setUrl("jdbc:mysql://localhost:3306/mybatis");
        dataSource.setUsername("root");
        dataSource.setPassword("sswqzx");

        JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
        jdbcTemplate.update("insert into account values(null, ?,?)","sswer22",99999999);

    }


    //DriverManagerDataSource连接池
    @Test
    public void test1(){
        //创建连接池
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName("com.mysql.jdbc.Driver");
        dataSource.setUrl("jdbc:mysql://localhost:3306/mybatis");
        dataSource.setUsername("root");
        dataSource.setPassword("sswqzx");

        //创建jdbc模板
        JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
        jdbcTemplate.update("insert into account values(null, ?,?)","sswer",99999999);
    }

    //Druid数据库连接池
    @Test
    public void test2(){
        //创建jdbc模板对象
        JdbcTemplate jdbcTemplate = new JdbcTemplate();
        //创建druid数据源、其它数据源也行、
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setDriverClassName("com.mysql.jdbc.Driver");
        dataSource.setUrl("jdbc:mysql://localhost:3306/mybatis");
        dataSource.setUsername("root");
        dataSource.setPassword("sswqzx");
        //设置数据源
        jdbcTemplate.setDataSource(dataSource);
        //插入操作
        jdbcTemplate.update("insert into account values(null, ?,?)","ssw",2000000000);
    }

    //c3p0数据源连接池
    @Test
    public void test3(){
        ComboPooledDataSource dataSource = new ComboPooledDataSource();
        try {
            dataSource.setDriverClass("com.mysql.jdbc.Driver");
            dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/mybatis");
            dataSource.setUser("root");
            dataSource.setPassword("sswqzx");
        } catch (PropertyVetoException e) {
            e.printStackTrace();
        }
        JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
        //插入操作
        jdbcTemplate.update("insert into account values(null, ?,?)","ssw11",2000000000);
    }
}