报错`Message.xml中报错`
错误内容 Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'UserAlias'. Cause: java.lang.ClassNotFoundException: Cannot find class: UserAlias
<mapper namespace="Message">
<!-- type对应的哪个实体类,id要在resultMap中唯一 -->
<resultMap type="bean.Message" id="MessageResult">
<!-- 数据库中主键用ID标签 -->
<!-- column对应数据库中的字段名,property对应了实体类中的属性名 ,jdbcType对应了数据库中的属性类型-->
<id column="ID" jdbcType="INTEGER" property="id"/>
<!-- 数据库中普通字段用result标签 -->
<result column="COMMAND" jdbcType="VARCHAR" property="command"/>
<result column="DESCRIPTION" jdbcType="VARCHAR" property="description"/>
<result column="CONTENT" jdbcType="VARCHAR" property="content"/>
</resultMap>
<!-- Mybatis中的配置信息,应用在一条具体的SQL语句上,通过resultMap标签指向相对应的id名 -->
<select id="queryMessageList" resultMap="MessageResult">
select ID,COMMAND,DESCRIPTION,CONTENT from message where 1=1
</select>
<select id="version" parameterType="long" resultType="int">
SELECT version FROM user WHERE id = #{id,jdbcType=INTEGER}
</select>
<delete id="delete" parameterType="UserAlias">
DELETE FROM user WHERE id = #{id:INTEGER}
</delete>
<insert id="insert" parameterType="UserAlias" useGeneratedKeys="false">
INSERT INTO user
( id,
username,
password,
administrator
)
VALUES
( #{id},
#{username,jdbcType=VARCHAR},
#{password.encrypted:VARCHAR},
#{administrator,jdbcType=BOOLEAN}
)
</insert>
<update id="update" parameterType="UserAlias">
UPDATE user SET
username = #{username,jdbcType=VARCHAR},
password = #{password.encrypted,jdbcType=VARCHAR},
administrator = #{administrator,jdbcType=BOOLEAN}
WHERE
id = #{id,jdbcType=INTEGER}
</update>
<!-- Unique constraint check -->
<select id="isUniqueUsername" parameterType="map" resultType="boolean">
SELECT (count(*) = 0)
FROM user
WHERE ((#{userId,jdbcType=BIGINT} IS NOT NULL AND id != #{userId,jdbcType=BIGINT}) OR #{userId,jdbcType=BIGINT} IS
NULL) <!-- other than me -->
AND (username = #{username,jdbcType=VARCHAR})
</select>
</mapper>
查看了下`是下面的删除和插入等``parameterType="UserAlias"报找不到``如何处理?删掉下面的SQL语句么?
