dao层的代码:
public interface SupplierMapper extends BaseMapper<SupplierDbo>{ 
    /*List<SupplierDbo> getAllSupplier(@Param("type") String type, 
                                     @Param("cooperStatus") Integer cooperStatus, 
                                     @Param("name") String name, 
                                     @Param("supplierNo") String supplierNo);*/ 
    List<SupplierDbo> getAllSupplier(@Param("supplierDbo") SupplierDbo supplierDbo,@Param("goodsClassDbo") GoodsClassDbo goodsClassDbo); 
} 
传入的参数为两个实体类SupplierDbo、GoodsClassDbo
mapper中的代码:
<select id="getAllSupplier" resultType="java.util.Map"> 
    SELECT s.name,s.supplier_no,s.address,s.contacts,s.phone_number, 
    s.contact_begin_date,s.contact_period,s.period_type,s.cooper_status, 
    s.licence,s.permission,s.settle_cycle ,s.bank_account,s.bank_name, 
    gc.class_name 
    FROM busi_supplier s LEFT JOIN busi_supplier_rel_goods sg ON s.supplier_no = sg.supplier_no 
    LEFT JOIN busi_goods_class gc ON gc.id = sg.goods_class_id 
    WHERE 1=1 
        <if test="goodsClassDbo.className != null and goodsClassDbo.className != ''"> 
            AND gc.class_name = #{goodsClassDbo.className} 
        </if> 
        <if test="supplierDbo.cooperStatus != null"> 
            AND s.cooper_status = #{supplierDbo.cooperStatus} 
        </if> 
        <if test="supplierDbo.name != null and supplierDbo.name != ''"> 
            AND s.name = #{name} 
        </if> 
        <if test="supplierDbo.supplierNo != null and supplierDbo.supplierNo != ''"> 
            AND s.supplier_no = #{supplierDbo.supplierNo} 
        </if> 
</select>
dao层中使用@Param,然后mapper中使用@Param中的参数对相应的参数取值。

原文地址:https://www.cnblogs.com/huangzhe1515023110/p/9276100.html

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