invalid comparison: java.util.Date and java.lang.String

invalid comparison: java.util.Date and java.lang.String

 <if test="orderDate != null and orderDate != ''">
                h.order_date = #{orderDate}
  </if>

改成

  <if test="orderDate != null">
                h.order_date = #{orderDate}
  </if>

标签：lang,comparison,java,String,invalid,orderDate
来源： https://blog.csdn.net/weixin_40079074/article/details/118913808