MyBatis傳參

1、直接傳

Dao層的函式方法

Public User selectUser（String name，String area）;

對應的Mapper.xml

<select * from user where name =#{0} and area=#{1}> </select>

其中#{0} 代表第一個引數，#{1}代表第二個引數，依次類推

2、 採用Map傳引數

Public User selectUser（Map paramMap）;

對應的Mapper.xml

<select * from user where name=#{userName,jdbcType=VARCHAR} and area=#{userArea,jdbcType=VARCHAR} </select>

Service 層呼叫

private User XXXSelectUser(){

Map paramMap=new hashMap();

paramMap.put("userName","對應的value");

paramMap.put("userArea","對應的value");

User user=xxx.selectUser(paramMap);

}

3、用內嵌變數

Dao層函式方法

Public User selectUser(@param("userName")String name,@param("userArea") String area);

對應的Mapper.xml

<select id=" selectUser" resultMap="BaseResultMap">

select * from user where name = #{userName，jdbcType=VARCHAR} and area=#{userArea,jdbcType=VARCHAR}

</select>

這種還是比較好的