xml实现简单CURD操作案例

xml实现简单CURD操作

    1.案例文件结构：

    2.bean.xml的文件配置：

<?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-->
    <bean id="accountService" class="com.ycl.service.impl.AccountServiceImpl">
        <property name="accountDao" ref="accountDao"></property>
    </bean>
    <bean id="accountDao" class="com.ycl.dao.impl.AccountDaoImpl">
        <!--注入QueryRunner-->
        <property name="runner" ref="runner"></property>
    </bean>
    <!--配置QueryRunner-->
    <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>
    <!--配置数据源-->
    <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/db3"></property>
        <property name="user" value="root"></property>
        <property name="password" value="root"></property>
    </bean>
</beans>

    3.pom.xml

<?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.ycl</groupId>
    <artifactId>day02_02account_xmlioc</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>commons-dbutils</groupId>
            <artifactId>commons-dbutils</artifactId>
            <version>1.4</version>
        </dependency>
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.2</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.6</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
        </dependency>
    </dependencies>
</project>

    4.业务层：

import com.ycl.domain.Account;
import java.util.List;
/**
* 业务层接口
*/
public interface IAccountService {
    /**
     * 查询所有
     * @return
     */
    List<Account> findAllAccount();
    /**
     * 查询一个
     * @return
     */
    Account findAccountById(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);
}

import com.ycl.dao.IAccountDao;
import com.ycl.domain.Account;
import com.ycl.service.IAccountService;
import java.util.List;
/**
* 业务层实现类
*/
public class AccountServiceImpl implements IAccountService {
    private IAccountDao accountDao;


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


    public AccountServiceImpl() {
    }


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


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

    5.持久层：

import com.ycl.domain.Account;
import java.util.List;
/**
* 账户的持久层接口
*/
public interface IAccountDao {
    /**
     * 查询所有
     * @return
     */
    List<Account> findAllAccount();
    /**
     * 查询一个
     * @return
     */
    Account findAccountById(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);
}

import com.ycl.dao.IAccountDao;
import com.ycl.domain.Account;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import java.util.List;
/**
* 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;
    }

    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 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);
        }
    }

    public void saveAccount(Account account) {
        try{
            runner.update("insert into account(name,money) value(?,?)",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);
        }
    }
}

    6.测试类：

import com.ycl.domain.Account;
import com.ycl.service.IAccountService;
import org.junit.Before;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import java.util.List;

/**
* 使用junit单元测试我们的配置
*/
public class AccountServiceTest {
    ApplicationContext ac =null;
    IAccountService as = null;
    @Before
    public void init(){
        ac = new ClassPathXmlApplicationContext("bean.xml");
        as = ac.getBean("accountService",IAccountService.class);
    }
    @Test
    public void testFindAll(){
        List<Account> accounts = as.findAllAccount();
        for (Account account : accounts) {
            System.out.println(account);
        }
    }
    @Test
    public void testFindById(){
        Account account = as.findAccountById(1);
        System.out.println(account);
    }
    @Test
    public void testSave(){
        Account account = new Account();
        account.setName("ycl");
        account.setMoney(1234f);
        as.saveAccount(account);
    }
    @Test
    public void testUpdate(){
        Account account = as.findAccountById(4);
        account.setMoney(2345f);
        as.updateAccount(account);
    }
    @Test
    public void testDelete(){
        as.deleteAccount(4);
    }
}