Spring基于XML&&Mysql | 注解&&Mysql的简单IOC案例

基于XML连接MySQL

package com.it.domain;


import java.io.Serializable;

/**
 * @Author: 东方老赢
 * @Date: 2020/4/2 11:07
 *
 * 账户的实体类
 */
public class Account implements Serializable {

    private Integer id;
    private String name;
    private Float money;

    public Account(Integer id, String name, Float money) {
        this.id = id;
        this.name = name;
        this.money = money;
    }
    public Account(String name, Float money) {
        this.name = name;
        this.money = money;
    }
    public Account(){

    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Float getMoney() {
        return money;
    }

    public void setMoney(Float money) {
        this.money = money;
    }

    @Override
    public String toString() {
        return "Account{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", money=" + money +
                '}';
    }
}

package com.it.dao;

import com.it.domain.Account;

import java.util.List;

/**
 * @Author: 东方老赢
 * @Date: 2020/4/2 11:20
 */
public interface IAccountDao {
    /**
     * 查询所有
     * @return
     */
    List<Account> findAllAccount();

    /**
     * 查询一个
     * @return
     */
    Account findAccount(Integer accountId);

    /**
     * 保存
     * @param account
     */
    void saveAccount(Account account);

    /**
     * 更新
     * @param account
     */
    void updateAccount(Account account);

    /**
     * 删除
     * @param accountId
     */
    void deleteAccount(Integer accountId);
}

package com.it.dao.impl;

import com.it.dao.IAccountDao;
import com.it.domain.Account;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;

import java.sql.SQLException;
import java.util.List;

/**
 * @Author: 东方老赢
 * @Date: 2020/4/2 11:19
 */
public class AccountDaoImpl implements IAccountDao{
    private QueryRunner runner;

    public AccountDaoImpl(QueryRunner runner) {
        this.runner = runner;
    }

    public AccountDaoImpl() {

    }


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

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

    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);
        }
    }

    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);
        }
    }

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

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

    public QueryRunner getRunner() {
        return runner;
    }
}

package com.it.service;

import com.it.domain.Account;

import java.util.List;

/**
 * @Author: 东方老赢
 * @Date: 2020/4/2 11:06
 *
 * 账户的业务层接口
 */
public interface IAccountService {
    /**
     * 查询所有
     * @return
     */
    List<Account> findAllAccount();

    /**
     * 查询一个
     * @return
     */
    Account findAccount(Integer accountId);

    /**
     * 保存
     * @param account
     */
    void saveAccount(Account account);

    /**
     * 更新
     * @param account
     */
    void updateAccount(Account account);

    /**
     * 删除
     * @param accountId
     */
    void deleteAccount(Integer accountId);
}

package com.it.service.impl;

import com.it.dao.IAccountDao;
import com.it.domain.Account;
import com.it.service.IAccountService;

import java.util.List;

/**
 * @Author: 东方老赢
 * @Date: 2020/4/2 11:18
 *
 * 账户的业务层
 */
public class AccountServiceImpl implements IAccountService {
    private IAccountDao accountDao;

    public void setAccountDao(IAccountDao accountDao) {
        this.accountDao = accountDao;
    }

    public List<Account> findAllAccount() {
        return accountDao.findAllAccount();
    }

    public Account findAccount(Integer accountId) {
        return accountDao.findAccount(accountId);
    }

    public void saveAccount(Account account) {
        accountDao.saveAccount(account);
    }

    public void updateAccount(Account account) {
        accountDao.updateAccount(account);
    }

    public void deleteAccount(Integer accountId) {
        accountDao.deleteAccount(accountId);
    }
}

<?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">

    <!--1.配置Service对象-->
    <bean id="accountService" class="com.it.service.impl.AccountServiceImpl">
        <!--注入dao-->
        <property name="accountDao" ref="accountDao"></property>
    </bean>

    <!--2.配置Dao对象-->
    <bean id="accountDao" class="com.it.dao.impl.AccountDaoImpl">
        <!--注入QueryRunner-->
        <property name="runner" ref="runner"></property>
    </bean>

    <!--3.配置Queryrunner对象:多例，防止线程冲突-->
    <bean id="runner" class="org.apache.commons.dbutils.QueryRunner"  scope="prototype">
        <!--注入数据源-->
        <constructor-arg name="ds" ref="dataSource"></constructor-arg>
    </bean>

    <!--4.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/spring"></property>
        <property name="user" value="root"></property>
        <property name="password" value="123456"></property>
    </bean>

</beans>

<?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.it</groupId>
    <artifactId>day02_eesy_03account _annoioc</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.2.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>commons-dbutils</groupId>
            <artifactId>commons-dbutils</artifactId>
            <version>1.6</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.36</version>
        </dependency>
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.1</version>
        </dependency>
        <dependency>
            <groupId>org.junit</groupId>
            <artifactId>com.springsource.org.junit</artifactId>
            <version>4.7.0</version>
            <scope>test</scope>
        </dependency>
    </dependencies>


</project>

基于注解连接MySQL

这里只展示与xml不同的部分

<?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">

    <context:component-scan base-package="com.it"/>
    <bean id="runner" class="org.apache.commons.dbutils.QueryRunner" scope="prototype">
        <constructor-arg name="ds" ref="dataSource"></constructor-arg>
    </bean>
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/spring"></property>
        <property name="user" value="root"></property>
        <property name="password" value="123456"></property>
    </bean>
</beans>

package com.it.dao;

import com.it.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.util.List;

/**
 * @Author: 东方老赢
 * @Date: 2020/4/3 10:02
 */
@Repository("accountDao")
public class AccountDaoImpl implements IAccountDao{

    @Autowired
    private QueryRunner runner;

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

    }

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

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

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

    public void update(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);
        }
    }


}

package com.it.service;

import com.it.dao.AccountDaoImpl;
import com.it.dao.IAccountDao;
import com.it.domain.Account;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * @Author: 东方老赢
 * @Date: 2020/4/3 10:07
 */
@Service("accountService")
public class AccountServiceImpl implements IAccountService {
    @Autowired
    IAccountDao accountDao;
    public List<Account> findAll() {
        return accountDao.findAll();
    }

    public Account find(Integer accountId) {
        return accountDao.find(accountId);
    }

    public void save(Account account) {
        accountDao.save(account);
    }

    public void delete(Integer accountId) {
        accountDao.delete(accountId);
    }

    public void update(Account account) {
        accountDao.update(account);
    }


}