Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'com/liu/mybatis/mapper/ParameterMapper.xml'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'User'. Cause: java.lang.ClassNotFoundException: Cannot find class: User
Could not resolve type alias 'User'. Cause: java.lang.ClassNotFoundException: Cannot find class: User
根据报错可知，User找不到了，查看一下这个文件ParameterMapper.xml的User配置
User关键词，改掉吧。
ParameterMapper.xml确定这个xml里面映射user类的路径对不
问下，那不是许多方法在一个文件执行，只要有一个返回类型不一样，其他的方法运行的时候都会报错吗？？