一、單個參數：
public List<XXBean> getXXBeanList(String id);
<select id="getXXXBeanList" parameterType="java.lang.String" resultType="XXBean">
select t.* from tableName t where t.id= #{id}
--或者#{_parameter}
select t.* from tableName t where t.id= #{_parameter}
</select>
其中方法名和ID一致，#{}中的參數名與方法中的參數名一致二、多參數：
public List<XXXBean> getXXXBeanList(String xxId, String xxCode);
<select id="getXXXBeanList" resultType="XXBean">
select t.* from tableName where id = #{0} and name = #{1}
或者
select t.* from tableName where id = #{param1} and name = #{param2}
</select>
由於是多參數那麼就不能使用parameterType， 改用#｛index｝是第幾個就用第幾個的索引，索引從0開始
或者使用param加index的方式來替代參數，該index從1開始三、Map封裝多參數：
map.put("xxId","100");
map.put("xxCode","abcdefg");
public List<XXXBean> getXXXBeanList(HashMap map);
<select id="getXXXBeanList" parameterType="hashmap" resultType="XXBean">
select 字段... from XXX where id=#{xxId} code = #{xxCode}
</select>
其中hashmap是mybatis自己配置好的直接使用就行。map中key的名字是那個就在#{}使用那個四、List封裝in或者List<Model>迭代參數：
public List<XXXBean> getXXXBeanList(List<String> list);
<select id="getXXXBeanList" resultType="XXBean">
select 字段... from XXX where id in
<foreach item="item" index="index" collection="list" open="(" separator="," close=")">
#{item}
</foreach>
</select>
foreach 最後的效果是select 字段... from XXX where id in ('1','2','3','4')
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public int insertUsersBatch(List<User> userlist);
<insert id="addTrainRecordBatch" useGeneratedKeys="true" parameterType="java.util.List">
<selectKey resultType="long" keyProperty="id" order="AFTER">
SELECT
LAST_INSERT_ID()
</selectKey>
insert into t_train_record (userId,name,address)
values
<foreach collection="list" item="item" index="index" separator="," >
(#{item.userId},#{item.name},#{item.address})
</foreach>五、多參數傳遞之註解方式示：
例子：
public AddrInfo getAddrInfo(@Param("corpId")int corpId, @Param("addrId")int addrId);
xml配置這樣寫：
<select id="getAddrInfo" resultMap="com.xxx.xxx.AddrInfo">
SELECT * FROM addr__info
where addr_id=#{addrId} and corp_id=#{corpId}
</select>
以前在<select>語句中要帶parameterType的，現在可以不要這樣寫。六、selectList()只能傳遞一個參數，但實際所需參數既要包含String類型，又要包含List類型時的處理方法：
將參數放入Map，再取出Map中的List遍歷。如下：
List<String> list_3 = new ArrayList<String>();Map<String, Object> map2 = new HashMap<String, Object>();
list.add("1");list.add("2");map.put("list", list); //網址idmap.put("siteTag", "0");//網址類型public List<SysWeb> getSysInfo(Map<String, Object> map2) {
return getSqlSession().selectList("sysweb.getSysInfo", map2);
}<select id="getSysInfo" parameterType="java.util.Map" resultType="SysWeb">
select t.sysSiteId, t.siteName, t1.mzNum as siteTagNum, t1.mzName as siteTag, t.url, t.iconPath
from TD_WEB_SYSSITE t left join TD_MZ_MZDY t1 on t1.mzNum = t.siteTag and t1.mzType = 10
WHERE t.siteTag = #{siteTag }
and t.sysSiteId not in
<foreach collection="list" item="item" index="index" open="(" close=")" separator=",">
#{item}
</foreach>
</select>