第一種方案

DAO層的函式方法 :

Public User selectUser(String name,String age);

對應的Mapper.xml

<select id="selectUser" resultMap="BaseResultMap" parameterType="java.lang.String">
    select  *  from user_user_t   where user_name = #{name} and user_age = #{age}
</select>

第二種方案 : 採用Map傳多引數.

Service層呼叫

Private User xxxSelectUser(){
    Map paramMap=new hashMap();
    paramMap.put(“userName”,”對應具體的引數值”);
    paramMap.put(“userAge”,”對應具體的引數值”);
    User user=xxxDao.selectUser(paramMap);
}

Dao層的函式方法

Public User selectUser(Map paramMap);

對應的Mapper.xml

<select id=" selectUser" resultMap="BaseResultMap">
   select  *  from user_user_t   where user_name = #{userName，jdbcType=VARCHAR} and user_age=#{userAge,jdbcType=VARCHAR}
</select>
 

第三種方案: 使用@Param註解

Dao層的函式方法

Public User selectUser(@param(“userName”)String name,@param(“userAge”)String area);

對應的Mapper.xml

<select id=" selectUser" resultMap="BaseResultMap">
   select  *  from user_user_t   where user_name = #{userName，jdbcType=VARCHAR} and user_age=#{userAge,jdbcType=VARCHAR}
</select>