使用mybatis的时候，在jsp页面中创建使用到mybatis对象时，在访问页面时报的错。
其实这个错和报struts2包不存在的解决方法差不多：
eclipse的解决方法：
1.右键项目名称，再点击Properties
2.点击左列的Deployment Assembly
3.点击右边的Add
Build Path Entires在选择你要添加的包（这里肯定是mybatis的包）
我已经添加过了，所以下图没有显示 
5.点击Apply+Ok后搞定
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