java.lang.ClassCastException: java.util.Arrays$ArrayList cannot be cast to java.util.ArrayList

是在SSM架构中调用dao层中出现的

ManageImpl层：

public int countAppsByConditionNew(Map<String, Object> map) {

Map map = new HashMap();

map.put("key","value#value");

String key = (String)map.get("key");

String[] split = key.split("#");

List<String> list = Arrays.asList(split);

map.put("key",list);

return applicationMapper.count(map);

}

mapper.java

int count(Map<String,Object> map);

mapper.xml

<select id="count" parameterType="java.util.Map" resultType="int">

select

count(*)

from user

where status = 1

<if test="key != null">

<foreach collection="key" open=" and key in (" close=")" item="k" separator=",">

#{tenantId}

</foreach>

</if>

order by created desc

</select>

修改方式为：

map放一个新的key，不要使用旧的key