数据库---MYSQL--JDBC高级 QueryRunner对数据库增删改查

pom.xml中需要添加的依赖：

       <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.0.2.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>commons-dbutils</groupId>
            <artifactId>commons-dbutils</artifactId>
            <version>1.4</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.6</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>
        </dependency>
        <dependency>
            <groupId>org.testng</groupId>
            <artifactId>testng</artifactId>
            <version>RELEASE</version>
            <scope>compile</scope>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.18</version>
        </dependency>

bean.xml所在位置：

1. 在bean.xml中 注入queryrunner；在queryrunner注入 数据源：

<?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">

<!--配置service对象-->
    <bean id="accountService" class="com.itheima.service.impl.AccountServiceImpl">
<!--        注入dao对象-->
        <property name="accountDao" ref="accountDao"></property>
    </bean>

<!--配置dao对象-->
    <bean id="accountDao" class="com.itheima.dao.impl.AccountDaoImpl">
<!--        注入QueryRunner-->
        <property name="runner" ref="runner"></property>
    </bean>

<!--配置QueryRunner对象-->
    <bean id="runner" class="org.apache.commons.dbutils.QueryRunner" scope="prototype">
<!--        注入数据源对象-->
        <constructor-arg name="ds" ref="dataSource"></constructor-arg>
    </bean>

<!--配置数据源-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!--    连接数据库的必备信息-->
        <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/eesy"></property>
        <property name="user" value="root"></property>
        <property name="password" value="007"></property>
    </bean>

</beans>

3. 在dao层 私有属性 queryrunner；生成set方法等待注入

/**
 * 账户 的 持久层实现类
 */
public class AccountDaoImpl implements IAccountDao {
    private QueryRunner runner;

    public void setRunner(QueryRunner runner) {
        this.runner = runner;
    }

5. 在dao层即可使用：（查query，增改删update）

 @Override
    public List<Account> findAllAccount() {
        try {
            return runner.query("select * from account",new BeanListHandler<Account>(Account.class));
        }catch (Exception e){
            throw  new RuntimeException(e);
        }
    }

    @Override
    public Account findAccountById(Integer accountId) {
        try {
            return runner.query("select * from account where id=?",new BeanHandler<Account>(Account.class),accountId);
        }catch (Exception e){
            throw  new RuntimeException(e);
        }
    }

    @Override
    public void saveAccount(Account account) {
        try {
            runner.update("insert into account(name,money)values(?,?)",account.getName(),account.getMoney());
        }catch (Exception e){
            throw  new RuntimeException(e);
        }
    }

    @Override
    public void updateAccount(Account account) {
        try {
            runner.update("update account set name=?,money=? where id=?",account.getName(),account.getMoney(),account.getId());
        }catch (Exception e){
            throw  new RuntimeException(e);
        }

    }

    @Override
    public void deleteAccount(Integer accountId) {
        try {
            runner.update("delete from account where id=?",accountId);
        }catch (Exception e){
            throw  new RuntimeException(e);
        }
    }
}