commons-dbutils实现增删改查

1、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">

    <modelVersion>4.0.0</modelVersion>

    <groupId>com.ly.spring</groupId>

    <artifactId>spring03</artifactId>

    <version>1.0-SNAPSHOT</version>

    <packaging>jar</packaging>

    <dependencies>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-context</artifactId>

            <version>5.0.2.RELEASE</version>

        </dependency>

        <dependency>

            <groupId>mysql</groupId>

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

            <version>5.1.6</version>

        </dependency>

        <dependency>

            <groupId>commons-dbutils</groupId>

            <artifactId>commons-dbutils</artifactId>

            <version>1.6</version>

        </dependency>

        <dependency>

            <groupId>c3p0</groupId>

            <artifactId>c3p0</artifactId>

            <version>0.9.1.2</version>

        </dependency>

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <version>4.10</version>

            <scope>test</scope>

        </dependency>

    </dependencies>

</project>

2、实体类

package com.ly.spring.domain;

import java.io.Serializable;

public class Account implements Serializable {

    private Integer id;

    private Integer uid;

    private double money;

    public Integer getId() {

        return id;

    }

    public void setId(Integer id) {

        this.id = id;

    }

    public Integer getUid() {

        return uid;

    }

    public void setUid(Integer uid) {

        this.uid = uid;

    }

    public double getMoney() {

        return money;

    }

    public void setMoney(double money) {

        this.money = money;

    }

    @Override

    public String toString() {

        return "Account{" +

                "id=" + id +

                ", uid=" + uid +

                ", money=" + money +

                '}';

    }

}

3、Service接口

package com.ly.spring.service;

import com.ly.spring.domain.Account;

import java.sql.SQLException;

import java.util.List;

public interface IAccountService {

    public List<Account> findAll() throws SQLException;

    public Account findOne(Integer id) throws SQLException;

    public void save(Account account) throws SQLException;

    public void update(Account account) throws SQLException;

    public void delete(Integer id) throws SQLException;

}

4、Service实现类

package com.ly.spring.service.impl;

import com.ly.spring.dao.IAccountDao;

import com.ly.spring.domain.Account;

import com.ly.spring.service.IAccountService;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

import java.sql.SQLException;

import java.util.List;

@Service("accountService")

public class AccountServiceImpl implements IAccountService {

    @Autowired

    private IAccountDao accountDao;

    public List<Account> findAll() throws SQLException {

        return accountDao.findAll();

    }

    @Override

    public Account findOne(Integer id) throws SQLException {

        return accountDao.findOne(id);

    }

    @Override

    public void save(Account account) throws SQLException {

        accountDao.save(account);

    }

    @Override

    public void update(Account account) throws SQLException {

        accountDao.update(account);

    }

    @Override

    public void delete(Integer id) throws SQLException {

        accountDao.delete(id);

    }

}

5、Dao接口

package com.ly.spring.dao;

import com.ly.spring.domain.Account;

import java.sql.SQLException;

import java.util.List;

public interface IAccountDao {

    public List<Account> findAll() throws SQLException;

    public Account findOne(Integer id) throws SQLException;

    public void save(Account account) throws SQLException;

    public void update(Account account) throws SQLException;

    public void delete(Integer id) throws SQLException;

}

6、Dao实现类

package com.ly.spring.dao.impl;

import com.ly.spring.dao.IAccountDao;

import com.ly.spring.domain.Account;

import org.apache.commons.dbutils.QueryRunner;

import org.apache.commons.dbutils.handlers.BeanHandler;

import org.apache.commons.dbutils.handlers.BeanListHandler;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Repository;

import java.sql.SQLException;

import java.util.List;

@Repository("accountDao")

public class AccountDaoImpl implements IAccountDao {

    @Autowired

    private QueryRunner queryRunner;

    public List<Account> findAll() throws SQLException {

        return queryRunner.query("select * from account",new BeanListHandler<Account>(Account.class));

    }

    @Override

    public Account findOne(Integer id) throws SQLException {

        return queryRunner.query("select * from account where id = ?",new BeanHandler<Account>(Account.class),id);

    }

    @Override

    public void save(Account account) throws SQLException {

        queryRunner.update("insert into account(uid,money) values(?,?)",account.getUid(),account.getMoney());

    }

    @Override

    public void update(Account account) throws SQLException {

        queryRunner.update("update account set money = ? where id = ?",account.getMoney(),account.getId());

    }

    @Override

    public void delete(Integer id) throws SQLException {

        queryRunner.update("delete from account where id = ?",id);

    }

}

7、测试类

package com.ly.spring.test;

import com.ly.spring.domain.Account;

import com.ly.spring.service.IAccountService;

import org.junit.Before;

import org.junit.Test;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.sql.SQLException;

import java.util.List;

public class MainTest {

    private ApplicationContext context;

    private IAccountService accountService;

    @Before

    public void init() {

        context = new ClassPathXmlApplicationContext("bean.xml");

        accountService = context.getBean("accountService", IAccountService.class);

    }

    @Test

    public void findAll() throws SQLException {

        List<Account> accounts = accountService.findAll();

        System.out.println(accounts);

    }

    @Test

    public void findOne() throws SQLException {

        Account account = accountService.findOne(3);

        System.out.println(account);

    }

    @Test

    public void save() throws SQLException {

        Account account = new Account();

        account.setUid(51);

        account.setMoney(8000);

        accountService.save(account);

    }

    @Test

    public void update() throws SQLException {

        Account account = new Account();

        account.setId(4);

        account.setMoney(100000);

        accountService.update(account);

    }

    @Test

    public void delete() throws SQLException {

        accountService.delete(4);

    }

}

8、spring配置文件

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

       xmlns:context="http://www.springframework.org/schema/context"

       xsi:schemaLocation="http://www.springframework.org/schema/beans

        http://www.springframework.org/schema/beans/spring-beans.xsd

        http://www.springframework.org/schema/context

        http://www.springframework.org/schema/context/spring-context.xsd">

    <!--配置注解扫描包-->

    <context:component-scan base-package="com.ly.spring"></context:component-scan>

    <!--引入外部properties文件-->

    <context:property-placeholder location="classpath:db.properties"></context:property-placeholder>

    <!--配置QueryRunner并注入数据源-->

    <bean id="queryRunner" class="org.apache.commons.dbutils.QueryRunner">

        <constructor-arg name="ds" ref="dataSource"></constructor-arg>

    </bean>

    <!--配置c3p0数据源并注入相关属性-->

    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

        <property name="jdbcUrl" value="${jdbc.url}"></property>

        <property name="driverClass" value="${jdbc.driver}"></property>

        <property name="user" value="${jdbc.user}"></property>

        <property name="password" value="${jdbc.password}"></property>

    </bean>

</beans>

9、数据库配置文件

jdbc.url = jdbc:mysql://localhost:3306/db01

jdbc.driver = com.mysql.jdbc.Driver

jdbc.user = root

jdbc.password = root

巴特西

commons-dbutils实现增删改查

1、maven依赖

2、实体类

3、Service接口

4、Service实现类

5、Dao接口

6、Dao实现类

7、测试类

8、spring配置文件

9、数据库配置文件

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