搭建基础项目遇到的一些小坑

最近看到一个秒杀系统，本来打算自己本地走个test，没想到好久不搭建项目，一下子走了好多坑，话不多说

1.在启动类这里写dao.*

@MapperScan(basePackages = "com.example.demo.*")
此处会报错，详情如下，找不到service
org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.example.demo.Service.MiaoshaService.miaoshaGoods
这里需要写具体路径,具体到dao层路径
@MapperScan(basePackages = "com.example.demo.dao")

2.在上面如果是报dao的错

org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.example.demo.Dao.MiaoshaDao.miaoshaGoods
建议去看下xml中的namespace是否与dao匹配

3.本地项目启动需要写明xml位置

这里我是用的yml需要写好配置

mybatis:
  mapper-locations: classpath*:mapper/*.xml

4.如果需要打包，需要在配置文件pom中加入以下配置

<resources>
   <resource>
      <directory>src/main/java</directory>
      <includes>
         <include>**/*.xml</include>
         <include>*.yml</include>
      </includes>
      <filtering>true</filtering>
   </resource>
   <resource>
      <directory>src/main/resources</directory>
      <includes>
         <include>**/*.xml</include>
         <include>*.yml</include>
      </includes>
      <filtering>true</filtering>
   </resource>
</resources>

5.别忘记配置数据库

报错如：Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
需要在pom中引包

<dependency>
   <groupId>mysql</groupId>
   <artifactId>mysql-connector-java</artifactId>
   <scope>runtime</scope>
</dependency>
并在yml中配置

datasource:
    url: jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai&allowMultiQueries=true
    username: root
    password: root
    driver-class-name: com.mysql.jdbc.Driver

上面就是简单搭建项目遇到的小坑