[com/ssiwo/mybatis/config/mybatis-config.xml] cannot be opened because it does not exist_mybatis mybatis-config.xml cannot be opened becaus

问题：

Caused by: java.io.FileNotFoundException: class path resource [com/ssiwo/mybatis/config/mybatis-config.xml] cannot be opened because it does not exist
	at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:180) ~[spring-core-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:450) ~[mybatis-spring-2.0.1.jar:2.0.1]
	at org.mybatis.spring.SqlSessionFactoryBean.afterPropertiesSet(SqlSessionFactoryBean.java:424) ~[mybatis-spring-2.0.1.jar:2.0.1]
	at org.mybatis.spring.SqlSessionFactoryBean.getObject(SqlSessionFactoryBean.java:554) ~[mybatis-spring-2.0.1.jar:2.0.1]
	at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration.sqlSessionFactory(MybatisAutoConfiguration.java:150) ~[mybatis-spring-boot-autoconfigure-2.0.1.jar:2.0.1]
	at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration$$EnhancerBySpringCGLIB$$819d6861.CGLIB$sqlSessionFactory$0(<generated>) ~[mybatis-spring-boot-autoconfigure-2.0.1.jar:2.0.1]
	at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration$$EnhancerBySpringCGLIB$$819d6861$$FastClassBySpringCGLIB$$f1d2d2f.invoke(<generated>) ~[mybatis-spring-boot-autoconfigure-2.0.1.jar:2.0.1]
	at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration$$EnhancerBySpringCGLIB$$819d6861.sqlSessionFactory(<generated>) ~[mybatis-spring-boot-autoconfigure-2.0.1.jar:2.0.1]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_181]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_181]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_181]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_181]
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
	... 55 common frames omitted

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分析：

检查发现，文件确实存在，路径复制粘贴也是对的，问题究竟出在哪呢？

原因：mybatis-config.xml 文件放的位置不对，必须放在resources文件夹下才会被加载。

解决方案：

项目启动，OK。