spring对junit的支持
主要是自动从spring容器中获取bean。不用手动获取了。
spring对junit4的支持
1.引入spring和junit4的依赖
<dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>6.0.4</version>
</dependency>
<!-- spring对junit支持的依赖，spring6既支持junit4也支持junit5 --><dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId><version>6.0.4</version></dependency>
<dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.13.2</version><scope>test</scope>
</dependency>
2.编写测试类
@RunWith(SpringJUnit4ClassRunner.class)
// 加载spring.xml配置文件 加载spring容器
@ContextConfiguration("classpath:spring.xml")
public class SpringJunit4Test {@Autowiredprivate Account account;@Testpublic void testSpringJunit4(){System.out.println(account.getActno());}
}
spring对junit5的支持
- 引入依赖
<dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>6.0.4</version></dependency>
<!-- spring对junit支持的依赖--><dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId><version>6.0.4</version></dependency><dependency><groupId>org.junit.jupiter</groupId><artifactId>junit-jupiter</artifactId><version>5.9.2</version><scope>test</scope></dependency>
2.编写测试类
@ExtendWith(SpringExtension.class)
@ContextConfiguration("classpath:spring.xml")
public class SpringJunit5Test {@Autowiredprivate Account account;@org.junit.jupiter.api.Testpublic void testSpringJunit5(){System.out.println(account.getActno());}
}
spring集成mybatis
- 引入依赖
<dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>6.0.21</version>
</dependency>
<dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>7.0.2</version>
</dependency>
<dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>8.0.30</version>
</dependency>
<dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.5.19</version>
</dependency>
<dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>4.0.0</version>
</dependency>
<dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.1.20</version>
</dependency>
<dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.13.2</version><scope>test</scope>
</dependency>
- 创建三层架构需要的包：mapper、pojo、service
- 编写pojo类
public class Account {private String actno;private double balance;@Overridepublic String toString() {return "Account{" +"actno='" + actno + '\'' +", balance=" + balance +'}';}public Account() {}public Account(String actno, double balance) {this.actno = actno;this.balance = balance;}public String getActno() {return actno;}public void setActno(String actno) {this.actno = actno;}public double getBalance() {return balance;}public void setBalance(double balance) {this.balance = balance;}
}
- 编写mapper接口
// 该接口不需要写实现类，mybatis会根据动态代理机制自动生成实现类
public interface AccountMapper {int update(Account getAccount);int insert(Account getAccount);int delete(String actno);Account getAccount(String actno);List<Account> getAllAccount();
}
- 编写mapper配置文件
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.ali.mapper.AccountMapper"><insert id="insert" parameterType="com.ali.pojo.Account">insert into t_act(actno, balance) values(#{actno}, #{balance})</insert><delete id="delete" >deletefrom t_actwhere actno = #{actno}</delete><update id="update" parameterType="com.ali.pojo.Account">update t_actset name = #{name},money = #{money}where actno = #{actno}</update><select id="getAccount" resultType="com.ali.pojo.Account">select actno, balancefrom t_actwhere actno = #{actno}</select><select id="getAllAccount" resultType="com.ali.pojo.Account">select actno, balancefrom t_act</select>
</mapper>
- 编写service和service的实现类
public interface AccountService {int addAccount(Account account);int updateAccount(Account account);int deleteAccount(String actno);Account getAccount(String actno);List<Account> getAllAccount();
}
@Service("accountService")
public class AccountServiceImpl implements com.ali.service.AccountService {@Autowiredprivate AccountMapper accountMapper;@Overridepublic int addAccount(Account account) {return accountMapper.insert(account);}@Overridepublic int updateAccount(Account account) {return accountMapper.update(account);}@Overridepublic int deleteAccount(String actno) {return accountMapper.delete(actno);}@Overridepublic Account getAccount(String actno) {return accountMapper.getAccount(actno);}@Overridepublic List<Account> getAllAccount() {return accountMapper.getAllAccount();}
}
- 编写jdbc.properties配置文件
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/spring6?useSSL=false&serverTimezone=UTC
jdbc.username=root
jdbc.password=yourpassword
- 编写mybaits-config.xml配置文件
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration><!-- 打印mybatis的日志信息，sql语句等--><settings><setting name="logImpl" value="STDOUT_LOGGING"/></settings>
</configuration>
- 编写spring.xml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" xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"><!-- 组件扫描-->
<context:component-scan base-package="com.ali" />
<!-- 引入外部的属性配置文件-->
<context:property-placeholder location="jdbc.properties" />
<!-- 数据源-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"><property name="url" value="${jdbc.url}" /><property name="username" value="${jdbc.username}" /><property name="password" value="${jdbc.password}" /><property name="driverClassName" value="${jdbc.driver}" />
</bean>
<!-- 配置sqlSessionFactoryBean-->
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 注入数据源--><property name="dataSource" ref="dataSource" />
<!-- 指定mybatis的配置文件位置--><property name="configLocation" value="classpath:mybatis-config.xml" />
<!-- 指定别名--><property name="typeAliasesPackage" value="com.ali.pojo" />
</bean><!-- Mapper扫描器,会自动扫描指定包下的mapper接口，并为其创建代理对象-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><property name="basePackage" value="com.ali.mapper" />
</bean><!-- 事务管理器--><bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="dataSource" /></bean>
<!-- 启用事务注解--><tx:annotation-driven transaction-manager="transactionManager" />
</beans>
在spring配置文件中引入子配置文件
<!-- 在spring.xml中引入其他的spring配置文件，common.xml中可以放置一些公共的bean定义，例如一些工具类、常量等，这样就可以在多个配置文件中共享这些bean定义，避免重复定义。--><import resource="common.xml" />