Could not find result map 'com.joffee.demain.User' referenced from 'com.joffee.dao.IUserDao.findAll'

Exception in thread "main" org.apache.ibatis.builder.IncompleteElementException: Could not find result map 'com.joffee.demain.User' referenced from 'com.joffee.dao.IUserDao.findAll'
    at org.apache.ibatis.builder.MapperBuilderAssistant.getStatementResultMaps(MapperBuilderAssistant.java:341)
    at org.apache.ibatis.builder.MapperBuilderAssistant.addMappedStatement(MapperBuilderAssistant.java:285)
    at org.apache.ibatis.builder.xml.XMLStatementBuilder.parseStatementNode(XMLStatementBuilder.java:113)
    at org.apache.ibatis.session.Configuration.lambda$buildAllStatements$2(Configuration.java:816)
    at java.util.Collection.removeIf(Collection.java:414)
    at org.apache.ibatis.session.Configuration.buildAllStatements(Configuration.java:815)
    at org.apache.ibatis.session.Configuration.hasStatement(Configuration.java:792)
    at org.apache.ibatis.session.Configuration.hasStatement(Configuration.java:787)
    at org.apache.ibatis.binding.MapperMethod$SqlCommand.resolveMappedStatement(MapperMethod.java:257)
    at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:227)
    at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:53)
    at org.apache.ibatis.binding.MapperProxy.lambda$cachedMapperMethod$0(MapperProxy.java:98)
    at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660)
    at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:97)
    at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:92)
    at com.sun.proxy.$Proxy0.findAll(Unknown Source)
    at com.joffee.test.MybatisTest.main(MybatisTest.java:42)
Caused by: java.lang.IllegalArgumentException: Result Maps collection does not contain value for com.joffee.demain.User
    at org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:964)
    at org.apache.ibatis.session.Configuration.getResultMap(Configuration.java:674)
    at org.apache.ibatis.builder.MapperBuilderAssistant.getStatementResultMaps(MapperBuilderAssistant.java:339)
    ... 16 more

Process finished with exit code 1

原因是

改为