Springboot启动错误Error starting ApplicationContext. To display the conditions
Springboot启动遇到错误Error starting ApplicationContext. To display the conditions report re-run your application with ‘debug’ enabled.
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-02-08 01:19:27.966 [main] ERROR org.springframework.boot.SpringApplication - Application run failed
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 [I:\project\ego_parent\ego_dubbo\target\classes\mybatis\TbContentCategoryMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [I:\project\ego_parent\ego_dubbo\target\classes\mybatis\TbContentCategoryMapper.xml]'. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.ego.mapper.TbContentCategoryMapper.BaseResultMap
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:627)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:607)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1321)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1160)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:845)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:742)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:389)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:311)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1213)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1202)
at com.ego.DubboApplication.main(DubboApplication.java:14)
Caused by: 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 [I:\project\ego_parent\ego_dubbo\target\classes\mybatis\TbContentCategoryMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [I:\project\ego_parent\ego_dubbo\target\classes\mybatis\TbContentCategoryMapper.xml]'. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.ego.mapper.TbContentCategoryMapper.BaseResultMap
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:622)
... 19 common frames omitted
Caused by: org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [I:\project\ego_parent\ego_dubbo\target\classes\mybatis\TbContentCategoryMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [I:\project\ego_parent\ego_dubbo\target\classes\mybatis\TbContentCategoryMapper.xml]'. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.ego.mapper.TbContentCategoryMapper.BaseResultMap
at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:596)
at org.mybatis.spring.SqlSessionFactoryBean.afterPropertiesSet(SqlSessionFactoryBean.java:475)
at org.mybatis.spring.SqlSessionFactoryBean.getObject(SqlSessionFactoryBean.java:616)
at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration.sqlSessionFactory(MybatisAutoConfiguration.java:180)
at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration$$EnhancerBySpringCGLIB$$3e10b0fa.CGLIB$sqlSessionFactory$1(<generated>)
at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration$$EnhancerBySpringCGLIB$$3e10b0fa$$FastClassBySpringCGLIB$$b60bb328.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363)
at org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration$$EnhancerBySpringCGLIB$$3e10b0fa.sqlSessionFactory(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
... 20 common frames omitted
Caused by: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [I:\project\ego_parent\ego_dubbo\target\classes\mybatis\TbContentCategoryMapper.xml]'. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.ego.mapper.TbContentCategoryMapper.BaseResultMap
at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:122)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:94)
at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:594)
... 33 common frames omitted
Caused by: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.ego.mapper.TbContentCategoryMapper.BaseResultMap
at org.apache.ibatis.session.Configuration$StrictMap.put(Configuration.java:947)
at org.apache.ibatis.session.Configuration$StrictMap.put(Configuration.java:903)
at org.apache.ibatis.session.Configuration.addResultMap(Configuration.java:660)
at org.apache.ibatis.builder.MapperBuilderAssistant.addResultMap(MapperBuilderAssistant.java:209)
at org.apache.ibatis.builder.ResultMapResolver.resolve(ResultMapResolver.java:47)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:289)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:253)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElements(XMLMapperBuilder.java:245)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:118)
... 35 common frames omitted
这是遇到springboot启动时的错误提示，经过很长时间的网上搜索，从检查pom.xml，到反复确认application.yml，无论怎么修改都无法解决这个令人头痛的问题，经过一步步的筛选，最后终于找到了问题，在此纪念愚蠢的自己遇到这个小小的问题。
问题所在是最后一个错误提示
sult Maps collection already contains value for com.ego.mapper.TbContentCategoryMapper.BaseResultMap
就是这个在mybatis文件下的 TbContentCategoryMapper文件中 BaeResultMap重复 ，导致无法通过编译，造成这个问题的原因是在用mybatis逆向工程是运行了两次，所以在 xml中所有的id都出现了两次，我在第一次发现有可能是BaseResultMap重复时在xml中用ctrl+f查找并没有找到，所以一直忽略这个问题。
希望可以帮到同样遇到相同问题的朋友。