mybatis-plus:mapper-locations的坑（idea本地启动不报错，服务器上报错）

前景：

(idea运行工程不报错，但在服务器上启动报错)

报错内容：

2022-04-20 11:40:16.360 ERROR 4956 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'adviserAdapter': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'adviserService': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'sysUserExtMapper' defined in URL [jar:file:/C:/idea_project/wk-dc-master-data/master-start/target/master-start-v1.0.0-rc02.jar!/BOOT-INF/lib/master-infrastructure-v1.0.0-rc02.jar!/com/wakedata/dc/master/data/mapper/SysUserExtMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [com/baomidou/mybatisplus/autoconfigure/MybatisPlusAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'class path resource [mapper/BuildingHouseMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'class path resource [mapper/BuildingHouseMapper.xml]'. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.wakedata.dc.master.data.mapper.BuildingHouseMapper.BaseResultMap
        at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessProperties(CommonAnnotationBeanPostProcessor.java:321) ~[spring-context-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420) ~[spring-beans-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) ~[spring-beans-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean不正确的(AbstractBeanFactory.java:324) ~[spring-beans-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226) ~[spring-beans-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897) ~[spring-beans-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879) ~[spring-context-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) ~[spring-context-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.2.RELEASE.jar!/:2.3.2.RELEASE]
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.2.RELEASE.jar!/:2.3.2.RELEASE]
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.2.RELEASE.jar!/:2.3.2.RELEASE]
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.3.2.RELEASE.jar!/:2.3.2.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.2.RELEASE.jar!/:2.3.2.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.2.RELEASE.jar!/:2.3.2.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.2.RELEASE.jar!/:2.3.2.RELEASE]
        at com.wakedata.dc.master.data.MasterApplication.main(MasterApplication.java:22) [classes!/:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_281]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_281]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_281]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_281]
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) [master-start-v1.0.0-rc02.jar:na]
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:109) [master-start-v1.0.0-rc02.jar:na]
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) [master-start-v1.0.0-rc02.jar:na]
        at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88) [master-start-v1.0.0-rc02.jar:na]

原本配置（mybatis-plus: mapper-locations: classpath*:mapper/*.xml,classpath*:mapper/**/*Mapper.xml ）

mybatis-plus:
  mapper-locations: classpath*:mapper/*.xml,classpath:mapper/**/*Mapper.xml

正确配置

深思：但Idea启动不报错，使用 java -jar命令行运行就报错的话，网上是这么说的：

原因+方案：

classpath后的 * 不可缺少

就发挥了作用，如果不加

• classpath*的使用：
  当项目中有多个classpath路径，并同时加载多个classpath路径下（此种情况多数不会遇到）的文件，，则表示仅仅加载第一个classpath路径

classpath：只会到你的class路径中查找找文件;
classpath*：不仅包含class路径，还包括jar文件中(class路径)进行查找。