ssm整合mybatis-plus报错NestedIOException: Failed to parse mapping resource

ssm整合mybatis-plus报错

背景：本人引用的是mybatis-plus2.0版本，出现了mapper.xml文件扫描不到的问题。查看源码发现是通过判断dao是否继承BaseMapper来确定是否对其进行sql注入，但是注入返回的sql是null，所以报错

报错信息：

jar:file:/E:/Code/hxyFrame/frame-admin/target/frame-admin/WEB-INF/lib/frame-service-1.0.jar!/mapping/StudentInfoMapper.xml]'; 
nested exception is java.lang.NullPointerException
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:479)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:235)
    at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:702)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:527)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:443)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:325)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5110)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5633)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:1015)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:991)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
    at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1899)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
    at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
    at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:618)
    at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:565)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
    at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
    at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468)
    at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76)
    at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309)
    at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1401)
    at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357)
    at sun.rmi.transport.Transport$1.run(Transport.java:200)
    at sun.rmi.transport.Transport$1.run(Transport.java:197)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
    at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:834)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

解决方式：在spring-mybatis.xml中的全局配置globalConfig下添加配置sql注入的类

<bean id="globalConfig" class="com.baomidou.mybatisplus.entity.GlobalConfiguration">
        
        <property name="idType" value="2" />
        
        <property name="dbType" value="mysql" />
        
        <property name="dbColumnUnderline" value="true" />
        
        <property name="sqlInjector">
            <bean class="com.baomidou.mybatisplus.mapper.AutoSqlInjector" />
        property>
bean>

附上spring-mybatis.xml的全部配置

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           http://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/context
                           http://www.springframework.org/schema/context/spring-context-4.2.xsd
                           http://www.springframework.org/schema/tx
                           http://www.springframework.org/schema/tx/spring-tx.xsd">
    
    <context:component-scan base-package="com.hxy.*.service,com.hxy.*.dao" />

    
    <bean name="springContextUtils" class="com.hxy.base.utils.SpringContextUtils"/>

    
    <bean id="propertyConfigurer"
          class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:conf/jdbc.propertiesvalue>
                <value>classpath:conf/cas.propertiesvalue>
                <value>classpath:conf/redisSentinel.propertiesvalue>
                <value>classpath:conf/redis.propertiesvalue>
                <value>classpath:conf/app.propertiesvalue>
            list>
        property>
    bean>

    
    <bean id="sqlSessionFactory"
          class="com.baomidou.mybatisplus.spring.MybatisSqlSessionFactoryBean">
        
        <property name="dataSource" ref="dataSource" />
        
        <property name="mapperLocations" value="classpath*:mapping/**/*.xml" />
        
        <property name="configLocation" value="classpath:mybatis-config.xml" />
        
        <property name="typeAliasesPackage" value="com.hxy.dto,com.hxy.sys.entity" />
        
        
        
        
        <property name="globalConfig" ref="globalConfig" />
    bean>

    
    <bean id="globalConfig" class="com.baomidou.mybatisplus.entity.GlobalConfiguration">
        
        <property name="idType" value="2" />
        
        <property name="dbType" value="mysql" />
        
        <property name="dbColumnUnderline" value="true" />
        
        <property name="sqlInjector">
            <bean class="com.baomidou.mybatisplus.mapper.AutoSqlInjector" />
        property>
    bean>
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <description>DAO接口所在包名，Spring会自动查找其下的类description>
        <property name="basePackage" value="com.hxy.*.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    bean>

    
    <bean class="com.baomidou.mybatisplus.spring.MybatisMapperRefresh">
        <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory" />
        <constructor-arg name="mapperLocations"
                         value="classpath*:mapping/**/*.xml" />
        <constructor-arg name="delaySeconds" value="10" />
        <constructor-arg name="sleepSeconds" value="20" />
        <constructor-arg name="enabled" value="true" />
    bean>

    
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    bean>
    
    <tx:annotation-driven transaction-manager="txManager" />

    <import resource="spring-druid.xml" />

beans>