今天完成的事情：

Test.java

package com.test;

import com.config.Appconfig;
import com.service.CityService;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;

public class Test {
    public static void main(String[] args) {
        AnnotationConfigApplicationContext annotationConfigApplicationContext=new AnnotationConfigApplicationContext(Appconfig.class);
        CityService service=annotationConfigApplicationContext.getBean(CityService.class);
        service.query();
    }
}

CitySevice.java

package com.service;

import com.dao.CityDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;

@Component
@Service
public class CityService {
    @Autowired
    CityDao dao;
    public void query(){
        System.out.println(dao.query());
    }
}

CityDao.java

package com.dao;

import org.apache.ibatis.annotations.Select;

import java.util.List;
import java.util.Map;

public interface CityDao {
    @Select("select*from city where id=2")
    public List<Map<String,Object>> query();
}

Appconfig.java

package com.config;

import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DriverManagerDataSource;

import javax.sql.DataSource;

@Configuration
@MapperScan("com.dao")
@ComponentScan("com")
public class Appconfig {
    @Bean
    @Autowired
    public SqlSessionFactoryBean sqlSessionFactoryBean(DataSource dataSource){
        SqlSessionFactoryBean sqlSessionFactoryBean=new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setDataSource(dataSource);
        return sqlSessionFactoryBean;
    }
    @Bean
    public DataSource dataSource(){
        DriverManagerDataSource driverManagerDataSource=new DriverManagerDataSource();
        driverManagerDataSource.setDriverClassName("com.mysql.jdbc.Driver");
        driverManagerDataSource.setPassword("");
        driverManagerDataSource.setUsername("root");
        driverManagerDataSource.setUrl("jdbc:mysql://127.0.0.1/test?serverTimezone=GMT");
        return driverManagerDataSource;
    }
}

ItelliJ IDEA根本找不到视频,全是eclipse简直丧. 一个视频几乎要看十遍, 反复按暂停,倒回去. 现在的程序员口语表达水准我无力吐槽.

明天计划的事情：继续做整合,内容多还容易出错.
遇到的问题：不会调试debug
收获：更加熟悉代码的含义了.