MyBatis报错 ### Error building SqlSession.

报错内容

com.fmm.test.Test
Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: 
### Error building SqlSession.
### The error may exist in com/fmm/mapper/AccountMapper.xml
### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.io.IOException: Could not find resource com/fmm/mapper/AccountMapper.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.fmm.test.Test.main(Test.java:18)
Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.io.IOException: Could not find resource com/fmm/mapper/AccountMapper.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/fmm/mapper/AccountMapper.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:372)
	at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:119)
	... 4 more

Process finished with exit code 

报错原因：

这是因为Maven工程不能直接去读取java文件夹里的xml文件，它只能读取resources里的

解决：

在pom.xml文件中添加配置build，不要添加到dependencies中！！

<build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
            <!-- 可不写下边的部分 -->
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>*.xml</include>
                    <include>*.properties</include>
                </includes>
            </resource>
        </resources>
    </build>

添加后记得重写加载pom文件，若仍然报错，检查编译版本和项目结构版本，修改后，要先点击Apply再点击OK