An exception occurred in configuring mybatis

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The first solution failed

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The second solution failed to connect to the database

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Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: 
### Error building SqlSession.
### The error may exist in com/itheima/mapper/UserMapper.java (best guess)
### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.binding.BindingException: Type interface com.itheima.mapper.UserMapper is already known to the MapperRegistry.
    at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
    at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:80)
    at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:64)
    at com.itheima.MyBatisDemo.main(MyBatisDemo.java:24)
Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.binding.BindingException: Type interface com.itheima.mapper.UserMapper is already known to the MapperRegistry.
    at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:122)
    at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:99)
    at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:78)
    ... 2 more
Caused by: org.apache.ibatis.binding.BindingException: Type interface com.itheima.mapper.UserMapper is already known to the MapperRegistry.
    at org.apache.ibatis.binding.MapperRegistry.addMapper(MapperRegistry.java:63)
    at org.apache.ibatis.binding.MapperRegistry.addMappers(MapperRegistry.java:106)
    at org.apache.ibatis.binding.MapperRegistry.addMappers(MapperRegistry.java:118)
    at org.apache.ibatis.session.Configuration.addMappers(Configuration.java:815)
    at org.apache.ibatis.builder.xml.XMLConfigBuilder.mapperElement(XMLConfigBuilder.java:367)
    at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:120)
    ... 4 more