MyBatis笔记----报错：Exception in thread "main" org.apache.ibatis.binding.BindingException: Invalid bound statement (not found)解决方法

报错

Exception in thread "main" org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.ij34.model.UserMapper.selectarticle
at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:230)
at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:48)
at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:65)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:58)
at com.sun.proxy.$Proxy0.selectarticle(Unknown Source)
at com.ij34.bean.Test.main(Test.java:23)

接口UserMapper的方法selectarticle与mybatis-config.xml里

与 下面UserMapper.xml里select id的要相同，当时写了大写

  <select id="selectArticle" parameterType="int" resultMap="resultAticleList">
  select users.id,users.name,users.age,article.id aid,article.title,article.content from users,article
  where users.id=article.userid and users.id=#{id}
  </select>