org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userManageController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.eduhelper.service.IUserService com.eduhelper.controller.backend.UserManageController.iUserService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'iUserService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.eduhelper.dao.UserMapper com.eduhelper.service.impl.UserServiceImpl.userMapper; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userMapper' defined in file [F:\apache-tomcat-7.0.75\webapps\ROOT\WEB-INF\classes\com\eduhelper\dao\UserMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory': : Error creating bean with name 'sqlSessionFactory' defined in class path resource [applicationContext-datasource.xml]: Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [F:\apache-tomcat-7.0.75\webapps\ROOT\WEB-INF\classes\mappers\ScoreMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'java.lang.String '.  Cause: java.lang.ClassNotFoundException: Cannot find class: java.lang.String ; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [applicationContext-datasource.xml]: Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [F:\apache-tomcat-7.0.75\webapps\ROOT\WEB-INF\classes\mappers\ScoreMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'java.lang.String '.  Cause: java.lang.ClassNotFoundException: Cannot find class: java.lang.String