Mybatis 异常：Cause: java.io.IOException: Could not find resource com.xxx.xxx.xml

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https://www.cnblogs.com/Xi-Chen00/p/12619072.html

最近在复习mybatis知识的时候，遇到这个异常：

Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: 
### Error building SqlSession.
### The error may exist in com/spring/repository/AccountRepository.xml
### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.io.IOException: Could not find resource com/spring/repository/AccountRepository.xml
	at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
	at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:80)
	at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:64)
	at com.spring.test.Test.main(Test.java:21)
Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.io.IOException: Could not find resource com/spring/repository/AccountRepository.xml
	at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:121)
	at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:98)
	at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:78)
	... 2 more
Caused by: java.io.IOException: Could not find resource com/spring/repository/AccountRepository.xml
	at org.apache.ibatis.io.Resources.getResourceAsStream(Resources.java:114)
	at org.apache.ibatis.io.Resources.getResourceAsStream(Resources.java:100)
	at org.apache.ibatis.builder.xml.XMLConfigBuilder.mapperElement(XMLConfigBuilder.java:371)
	at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:119)
	... 4 more

Process finished with exit code 1

检查运行类配置文件名，确定没错：

检查mybatis的配置文件，注册的xml的路径确定没写错（路径用/，有.xml后缀）：

检查了.xml映射的namespace，确定也没写错（路径用. , 没有后缀）：

无论反复检查代码，也导入了mybatis依赖。最后想了一下，找不到文件是不是因为maven工程没有扫描到xml文件？（这点还是容易被忽略的，maven默认扫描resource目录）

在pom的build中添加扫描java目录下xml文件的依赖就成功了：

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