记一次错误，自己写的mapper接口和mapper.xml，结果将类型写错了，报下面的错误
Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'itemParamServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private cn.e3mall.param.mapper.TbItemParamExtendMapper cn.e3mall.service.impl.ItemParamServiceImpl.itemParamExtendMapper; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [cn.e3mall.param.mapper.TbItemParamExtendMapper] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
Related cause: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'tbItemParamExtendMapper' defined in file [E:\project\workspace\JavaEE32\e3-manager\e3-manager-service\target\classes\cn\e3mall\param\mapper\TbItemParamExtendMapper.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'LONGVACHAR'. Cause: java.lang.ClassNotFoundException: Cannot find class: LONGVACHAR
Related cause: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'tbItemParamExtendMapper' defined in file [E:\project\workspace\JavaEE32\e3-manager\e3-manager-service\target\classes\cn\e3mall\param\mapper\TbItemParamExtendMapper.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'LONGVACHAR'. Cause: java.lang.ClassNotFoundException: Cannot find class: LONGVACHAR
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
解决办法
mapper.xml文件中
将红框内容改为jdbcType="LONGVARCHAR"
问题修改为
ResultType 改为 ResultMap
问题总结：
遇见Bug一定要耐心，细心，只有去耐心的去看报错信息，才能更快的解决问题。心烦意躁，急迫的想解决问题，反而问题不容易解决。这次错误花费了我一晚上，心烦意燥的代价，发现每次Bug修改都花费较多时间，每次都是自己不细心，没有仔细看报错信息，导致花费较多时间，
记以后遇见Bug要沉着冷静