基于XML的IOC的案例
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2024-01-03 18:41:58
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基于XML的IOC的案例
1 基于XML的IOC的案例准备
1.打开IDEA工具如图所示的界面,点击Create New Project。
2.选择Maven工程和JDK的版本,如图所示:并点击Next。
3.填写项目名称和保存的地址,点击Finish。如图所示:
4.导入相应的依赖jar包的代码如下:
<?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.txw</groupId>
<artifactId>springy_02account_xmlioc</artifactId>
<version>1.0-SNAPSHOT</version>
<!--打包的方式 -->
<packaging>jar</packaging>
<dependencies>
<!--导入spring-context的依赖jar包坐标-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.2.8.RELEASE</version>
</dependency>
<!--导入lombok的依赖jar包坐标-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.12</version>
</dependency>
<!--导入mysql的依赖jar包坐标-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>6.0.6</version>
</dependency>
<!--导入commons-dbutils的依赖jar包坐标-->
<dependency>
<groupId>commons-dbutils</groupId>
<artifactId>commons-dbutils</artifactId>
<version>1.7</version>
</dependency>
<!--导入spring-test的依赖jar包坐标-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.2.8.RELEASE</version>
</dependency>
<!--导入c3p0的依赖jar包坐标-->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<!--导入junit的依赖jar包坐标-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13</version>
</dependency>
</dependencies>
</project>
5.编写账户实体类的代码如下:
package com.txw.domain;
import lombok.Data;
import lombok.ToString;
import java.io.Serializable;
/**
* 账户的实体类
* @author:Adair
* @QQ:1578533828
*/
@Data // 自动生成set和get方法
@ToString // 重写toString方法
@SuppressWarnings("all") // 注解警告信息
public class Account implements Serializable {
private Integer id; // 账户的id
private String name; // 账户的名称
private Float money; // 账户的金额
}
6.编写账户的业务层接口代码如下:
package com.txw.service;
import com.txw.domain.Account;
import java.util.List;
/**
*账户的业务层接口
* @author:Adair
* @QQ:1578533828
*/
@SuppressWarnings("all") // 注解警告信息
public interface AccountService {
/**
* 查询所有
* @return
*/
List<Account> findAllAccount();
/**
* 根据id查询一个
* @return
*/
Account findAccountById(Integer accountId);
/**
* 保存账户
* @param account
*/
void saveAccount(Account account);
/**
* 更新账户
* @param account
*/
void updateAccount(Account account);
/**
* 根据id删除
* @param acccountId
*/
void deleteAccount(Integer accountId);
}
7.编写账户的业务层实现类代码如下:
package com.txw.service.impl;
import com.txw.dao.AccountDao;
import com.txw.domain.Account;
import com.txw.service.AccountService;
import java.util.List;
/**
* 账户的业务层实现类
* @author:Adair
* @QQ:1578533828
*/
@SuppressWarnings("all") // 注解警告信息
public class AccountServiceImpl implements AccountService {
// 声明AccountDao业务对象
private AccountDao accountDao;
/**
* set注入
* @param accountDao
*/
public void setAccountDao(AccountDao accountDao) {
this.accountDao = accountDao;
}
/**
* 查询所有
* @return
*/
public List<Account> findAllAccount() {
return accountDao.findAllAccount();
}
/**
* 根据id查询一个
* @return
*/
public Account findAccountById(Integer accountId) {
return accountDao.findAccountById(accountId);
}
/**
* 保存账户
* @param account
*/
public void saveAccount(Account account) {
accountDao.saveAccount(account);
}
/**
* 修改账户
* @param account
*/
public void updateAccount(Account account) {
accountDao.updateAccount(account);
}
/**
* 根据id删除
* @param acccountId
*/
public void deleteAccount(Integer accountId) {
accountDao.deleteAccount(accountId);
}
}
8.编写账户的持久层接口代码如下:
package com.txw.dao;
import com.txw.domain.Account;
import java.util.List;
/**
* 账户的持久层接口
* @author:Adair
* @QQ:1578533828
*/
@SuppressWarnings("all") // 注解警告信息
public interface AccountDao {
/**
* 查询所有
* @return
*/
List<Account> findAllAccount();
/**
* 根据id查询一个
* @return
*/
Account findAccountById(Integer accountId);
/**
* 保存账户
* @param account
*/
void saveAccount(Account account);
/**
* 更新账户
* @param account
*/
void updateAccount(Account account);
/**
* 根据id删除
* @param acccountId
*/
void deleteAccount(Integer accountId);
}
9.编写账户的持久层实现类代码如下:
package com.txw.dao.impl;
import com.txw.dao.AccountDao;
import com.txw.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
* @author:Adair
* @QQ:1578533828
*/
@SuppressWarnings("all") // 注解警告信息
public class AccountDaoImpl implements AccountDao {
// 声明QueryRunner业务对象
private QueryRunner runner;
/**
* set注入
* @param runner
*/
public void setRunner(QueryRunner runner) {
this.runner = runner;
}
/**
* 查询所有
* @return
*/
public List<Account> findAllAccount() {
try{
return runner.query("select * from account",new BeanListHandler<Account>(Account.class));
}catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* 根据id查询一个
* @return
*/
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);
}
}
/**
* 保存账户
* @param account
*/
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);
}
}
/**
* 修改账户
* @param account
*/
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);
}
}
/**
* 根据id删除
* @param accountId
*/
public void deleteAccount(Integer accountId) {
try{
runner.update("delete from account where id=?",accountId);
}catch (Exception e) {
throw new RuntimeException(e);
}
}
}
2 基于XML的IOC的案例-编写spring的Ioc配置
1.在resources目录下创建bean.xml的代码如下:
<?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.txw.service.impl.AccountServiceImpl">
<!-- 注入dao -->
<property name="accountDao" ref="accountDao"></property>
</bean>
<!--配置Dao对象-->
<bean id="accountDao" class="com.txw.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">
<!--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?useUnicode=true&characterEncoding=utf8&serverTimezone=UTC&useSSL=false"/>
<property name="user" value="root"></property>
<property name="password" value="123456"></property>
</bean>
</beans>
2.编写测试的代码如下:
package com.txw.test;
import com.txw.domain.Account;
import com.txw.service.AccountService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import java.util.List;
/**
* 使用Junit单元测试
* @author:Adair
* @QQ:1578533828
*/
@SuppressWarnings("all") // 注解警告信息
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:bean.xml")
public class AccountServiceTest {
// 声明AccountService业务对象
@Autowired
private AccountService as;
/**
* 测试查询所有
*/
@Test
public void testFindAll() {
// 3.执行方法
List<Account> accounts = as.findAllAccount();
for(Account account : accounts){
System.out.println(account);
}
}
/**
* 测试根据id查询一个
*/
@Test
public void testFindOne() {
//3.执行方法
Account account = as.findAccountById(1);
System.out.println(account);
}
/**
* 测试保存账户
*/
@Test
public void testSave() {
Account account = new Account();
account.setName("Adair");
account.setMoney(12345f);
//3.执行方法
as.saveAccount(account);
}
/**
* 测试修改账户
*/
@Test
public void testUpdate() {
//3.执行方法
Account account = as.findAccountById(4);
account.setMoney(23456f);
as.updateAccount(account);
}
/**
* 测试根据id删除
*/
@Test
public void testDelete() {
//3.执行方法
as.deleteAccount(4);
}
}