Dao层向sql语句传递多个参数

手动封装:

serviceImpl层

Map<String, Object> params = new HashMap<String, Object>(2);params.put("bigCodeArray", bigCodeArray);params.put("agentId", agentId);

List<String> numberList = usednumber400Dao.selectNumberInBigByStatus(params);
 
dao层:

List<String> selectNumberInBigByStatus(Map<String, Object> params);mapper层:

<select id="selectNumberInBigByStatus" parameterType="map"  resultType="string">    SELECT      number    from usednumber400    WHERE      agentID=#{agentId}    and    number IN    <foreach collection="bigCodeArray" item="item" index="index" open="(" close=")" separator=",">        #{item}    </foreach>
 
</select>

推荐网址:http://iyiguo.net/blog/2012/09/27/mybatis-param-mapping-rules/

MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter 'voyagenum' not found. Available parameters are [0, 1, param1, param2]

MyBatisSystemException:嵌套异常是org.apache.ibatis.binding。BindingException:未找到参数“voyagenum”。可用参数为[0,1,param1, param2]

解析：Dao层向sql语句传递多个参数时

方法1:注解形式,注意添加注解@Param("mainfestid")

public String selectUuidByM(@Param("mainfestid")String mainfestid, @Param("voyagenum")String voyagenum);

方法2:索引方式  #｛index｝从0开始

public List<XXXBean> getXXXBeanList(String xxId, String xxCode);  
 
<select id="getXXXBeanList" resultType="XXBean">
 
　　select t.* from tableName where id = #{0} and name = #{1}  
 
</select>  
 
由于是多参数那么就不能使用parameterType， 改用#｛index｝是第几个就用第几个的索引，索引从0开始

方法3:索引方式  param1 从1开始

User getUserByNameAndPwd(String username, String password);
 
<select id="getUserByNameAndPwd" parameterType="String" resultMap="user">
select * from d_user where user_name =#{param1} and user_password=#{param2}
</select>