org.apache.ibatis.exceptions.PersistenceException: NullPointerException

org.apache.ibatis.exceptions.PersistenceException: NullPointerException是Mybatis中的一个错误。它表示在查询数据库时出现了空指针异常。

解决这个问题有两种方法。一种是在Mybatis的配置文件中添加typeAliases，另一种是在mapper.xml文件中的resultMap的Type中指定实体类的包名。这两种方法都可以解决这个问题，但推荐使用第二种方法。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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