Maven加载遇到的问题：Invalid bound statement (not found): XXX

1. Maven的加载机制：

maven在默认情况下，只会加载编译src-main-java目录里面的Java类型的文件，其他类型的文件不会进行加载。

2. 解决方法——第一种

把Xml文件放到resources目录下面

3. 解决方法——第二种

在pom.xml添加

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.yml</include>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes> <include>**/*.yml</include>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
    </build>
    

2、application-dev.yml添加

mybatis-plus:
  mapper-locations: classpath:com/atguigu/auth/mapper/xml/*.xml