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springmvc报错Neither BindingResult nor plain target object for bean name 'command' available as reques

用springmvc做商品的增删改查,修改商品进行表单回显时会报错 Neither BindingResult nor plain target object for bean name ‘command’ available as request attribute

在表单的form属性加上commandName=“glist”

springmvc报错Neither BindingResult nor plain target object for bean name 'command' available as reques
springmvc报错Neither BindingResult nor plain target object for bean name 'command' available as reques

这样就可以表单回显了,然后修改数据提交。

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