### Error querying database. Cause: org.apache.ibatis.binding.BindingException: Parameter 'email' not found.

这种情况可能是由于对数据库进行查询时，方法内部缺少相应的参数占位符导致的。在持久层（Dao层）的方法中，应该使用@Param注解为每个参数添加占位符，以确保参数能够正确传递。例如，在Lmonkey_CartDao接口中的update方法中，参数quantity应该使用@Param("quantity")进行标注，u_id应该使用@Param("u_id")标注，p_id应该使用@Param("p_id")进行标注。这样就能避免出现"Parameter 'email' not found"的错误。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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