Caused by: java.lang.IllegalArgumentException: Mapped Statements collection already contains value for com.mapper.UserMapper.getUser. please check com/mapper/UserMapper.xml and class path resource [com/mapper/UserMapper.xml]
at org.apache.ibatis.session.Configuration
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StrictMap.put(Configuration.java:1037) at org.apache.ibatis.session.Configuration
StrictMap.put(Configuration.java:1037)atorg.apache.ibatis.session.ConfigurationStrictMap.put(Configuration.java:993)
at org.apache.ibatis.session.Configuration.addMappedStatement(Configuration.java:791)
at org.apache.ibatis.builder.MapperBuilderAssistant.addMappedStatement(MapperBuilderAssistant.java:297)
at org.apache.ibatis.builder.xml.XMLStatementBuilder.parseStatementNode(XMLStatementBuilder.java:113)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.buildStatementFromContext(XMLMapperBuilder.java:138)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.buildStatementFromContext(XMLMapperBuilder.java:131)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:121)
… 44 more
1.可能是mapper.xml编写的问题
2.还可能是重复注册的mapper（可能在mybatis-config.xml注册了）
同是又写了
删除其中一个就好了
