spring对junit的支持

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 {

    @Autowired
    private Account account;

    @Test
    public void testSpringJunit4(){
        System.out.println(account.getActno());
    }
}

spring对junit5的支持

1. 引入依赖

   org.springframework spring-context 6.0.4 org.springframework spring-test 6.0.4 org.junit.jupiter junit-jupiter 5.9.2 test

2.编写测试类

@ExtendWith(SpringExtension.class)
@ContextConfiguration("classpath:spring.xml")
public class SpringJunit5Test {

    @Autowired
    private Account account;

    @org.junit.jupiter.api.Test
    public void testSpringJunit5(){
        System.out.println(account.getActno());
    }
}

spring集成mybatis

1. 引入依赖

   org.springframework spring-context 6.0.21 org.springframework spring-jdbc 7.0.2 mysql mysql-connector-java 8.0.30 org.mybatis mybatis 3.5.19 org.mybatis mybatis-spring 4.0.0 com.alibaba druid 1.1.20 junit junit 4.13.2 test

2. 创建三层架构需要的包：mapper、pojo、service

3. 编写pojo类

   public class Account {
   private String actno;
   private double balance;

    @Override
    public 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;
    }

   }

4. 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 getAllAccount();
   }

5. 编写mapper配置文件

   insert into t_act(actno, balance) values(#{actno}, #{balance})

    <delete id="delete" >
        delete
        from t_act
        where actno = #{actno}
    </delete>
   
    <update id="update" parameterType="com.ali.pojo.Account">
        update t_act
        set name  = #{name},
            money = #{money}
        where actno = #{actno}
    </update>
   
    <select id="getAccount"  resultType="com.ali.pojo.Account">
        select actno, balance
        from t_act
        where actno = #{actno}
    </select>
   
    <select id="getAllAccount" resultType="com.ali.pojo.Account">
        select actno, balance
        from t_act
    </select>

6. 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 getAllAccount();
   }

   @Service("accountService")
   public class AccountServiceImpl implements com.ali.service.AccountService {

    @Autowired
    private AccountMapper accountMapper;
   
    @Override
    public int addAccount(Account account) {
        return accountMapper.insert(account);
    }
   
    @Override
    public int updateAccount(Account account) {
        return accountMapper.update(account);
    }
   
    @Override
    public int deleteAccount(String actno) {
        return accountMapper.delete(actno);
    }
   
    @Override
    public Account getAccount(String actno) {
        return accountMapper.getAccount(actno);
    }
   
    @Override
    public List<Account> getAllAccount() {
        return accountMapper.getAllAccount();
    }

   }

7. 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

8. 编写mybaits-config.xml配置文件

   <settings>
       <setting name="logImpl" value="STDOUT_LOGGING"/>
   </settings>

9. 编写spring.xml配置文件