SSM容器注入错误 StandardWrapper.Throwable org.springframework.beans.factory.BeanCreationException

StandardWrapper.Throwable
org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘waybillController’: Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘wayBillServiceimpl’: Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.pakage.mapper.WayBillServiceMapper] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.annotation.Resource(shareable=true, lookup=, name=, description=, authenticationType=CONTAINER, type=class java.lang.Object, mappedName=)}
Related cause: org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘wayBillServiceMapper’ defined in file [D:devEnglishworkspace.metadata.pluginsorg.eclipse.wst.server.coretmp0wtpwebappsPakageSystemWEB-INFclassescompakagemapperWayBillServiceMapper.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Mapped Statements collection already contains value for com.pakage.mapper.WayBillServiceMapper.insertPost
Related cause: org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘wayBillServiceMapper’ defined in file [D:devEnglishworkspace.metadata.pluginsorg.eclipse.wst.server.coretmp0wtpwebappsPakageSystemWEB-INFclassescompakagemapperWayBillServiceMapper.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Mapped Statements collection already contains value for com.pakage.mapper.WayBillServiceMapper.insertPost

如上，bean注入错误。
找了一下午，搜了不少，都不对。
最后一点点拆开来，发现是有一个mapper.xml中的resultType值出错。
我把原先的weightPrice更名为weightPriceVO，却忘了修改此处的resultType为新的值，导致bean无法装配！！！
这个故事告诉我们不要乱改已经写好的类的名字。

补充：

数据库有关的po对象类，即mapper中装配涉及的po对象类，都要放到mybatis.xml配置的类中，否则同样会报以上错误。

总结：以上错误引起的原因主要为数据库配置中mapper.xml文件有关的容器注入错误。

最后

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