遇到Error building SqlSession错误

Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException:
### Error building SqlSession.
### The error may exist in com/mapper/stuCardMapper.xml
### 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/mapper/stuCardMapper.xml'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.entity.stuCard '. Cause: java.lang.ClassNotFoundException: Cannot find class: com.entity.stuCard
   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 mybatis_One02.test.main(test.java:17)
Caused by: 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/mapper/stuCardMapper.xml'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.entity.stuCard '. Cause: java.lang.ClassNotFoundException: Cannot find class: com.entity.stuCard
   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.builder.BuilderException: Error parsing Mapper XML. The XML location is 'com/mapper/stuCardMapper.xml'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.entity.stuCard '. Cause: java.lang.ClassNotFoundException: Cannot find class: com.entity.stuCard
   at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:123)
   at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:95)
   at org.apache.ibatis.builder.xml.XMLConfigBuilder.mapperElement(XMLConfigBuilder.java:378)
   at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:120)
   ... 4 more
Caused by: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.entity.stuCard '. Cause: java.lang.ClassNotFoundException: Cannot find class: com.entity.stuCard
   at org.apache.ibatis.builder.BaseBuilder.resolveClass(BaseBuilder.java:118)
   at org.apache.ibatis.builder.xml.XMLStatementBuilder.parseStatementNode(XMLStatementBuilder.java:102)
   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)
   ... 7 more
Caused by: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.entity.stuCard '. Cause: java.lang.ClassNotFoundException: Cannot find class: com.entity.stuCard
   at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:120)
   at org.apache.ibatis.builder.BaseBuilder.resolveAlias(BaseBuilder.java:149)
   at org.apache.ibatis.builder.BaseBuilder.resolveClass(BaseBuilder.java:116)
   ... 11 more
Caused by: java.lang.ClassNotFoundException: Cannot find class: com.entity.stuCard
   at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:196)
   at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:89)
   at org.apache.ibatis.io.Resources.classForName(Resources.java:261)
   at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:116)
   ... 13 more

com/mapper/stuCardMapper.xml错误

Could not resolve type alias 'com.entity.stuCard '.

错误的原因是找不到stuCard类，s应该是大写的吧，改为StuCard试试。

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