mybatis-plus今天遇到一个问题，就是mybatis 没有读取到mapper.xml 文件。

#实体扫描，多个package用逗号或者分号分隔
mybatis-plus:typeAliasesPackage: com.gblfy.springboot.mybatisplus.entitymapper-locations:- classpath*:com/gblfy/springboot/**/mapping/*.xml

特此记录一下，问题如下：

org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.husy.mapper.SystemUserMapper.findUserByNameat com.baomidou.mybatisplus.core.override.MybatisMapperMethod$SqlCommand.<init>(MybatisMapperMethod.java:242)at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.<init>(MybatisMapperMethod.java:54)at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.lambda$cachedMapperMethod$0(MybatisMapperProxy.java:65)at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660)at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.cachedMapperMethod(MybatisMapperProxy.java:65)at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.invoke(MybatisMapperProxy.java:60)at com.sun.proxy.$Proxy72.findUserByName(Unknown Source)at com.husy.service.impl.SystemUserServiceImpl.findUserByName(SystemUserServiceImpl.java:23)

解决方案1：

添加如下配置即可

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

解决方案2：
把mapping文件夹和文件移动到resources目录下面

#实体扫描，多个package用逗号或者分号分隔
mybatis-plus:typeAliasesPackage: com.gblfy.springboot.mybatisplus.entitymapper-locations:- classpath*:/mapping/*.xml