2020-01-03 00:00:15.558 [main] WARN o.s.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘demo‘: Unsatisfied dependency expressed through field ‘template‘; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘sqlSessionTemplate‘ defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Unsatisfied dependency expressed through method ‘sqlSessionTemplate‘ parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘sqlSessionFactory‘ defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.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: ‘file [C:\Users\XM\workspace\muke\mygit\Chapter11\target\classes\mapper\mysql.xml]‘; nested exception is org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 6; 不允许有匹配 "[xX][mM][lL]" 的处理指令目标。
2020-01-03 00:00:15.558 [main] WARN org.springframework.context.annotation.CommonAnnotationBeanPostProcessor - Invocation of destroy method failed on bean with name ‘application‘: java.lang.NullPointerException
2020-01-03 00:00:15.560 [main] INFO org.apache.catalina.core.StandardService - Stopping service [Tomcat]
2020-01-03 00:00:15.569 [main] INFO o.s.boot.autoconfigure.logging.ConditionEvaluationReportLoggingListener -
问题为XML文件首行多了一行 空行
问题：org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 6; 不允许有匹配 "[xX][mM][lL]" 的处理指令目标。
原文：https://www.cnblogs.com/martintest/p/12153370.html