在整合springboot过程中，遇到错误真是无头绪，开始主要是这两个：
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'makeSqlSessionFactoryBean' defined in class path resource [com/MyBatisConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'makeSqlSessionFactoryBean' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [D:\Eclipse Workspace\pay-source\pay-source\pay-business-soa\target\classes\mybatis\applyWage\ApplyWageMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalStateException: No typehandler found for property createTime
与
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'a2bServiceImpl': Unsatisfied dependency expressed through field 'mapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'a2bMapper' defined in file [D:\Eclipse Workspace\pay-source\pay-source\pay-business-soa\target\classes\com\huaying\dao\a2b\A2bMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'makeSqlSessionFactoryBean' defined in class path resource [com/MyBatisConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'makeSqlSessionFactoryBean' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [D:\Eclipse Workspace\pay-source\pay-source\pay-business-soa\target\classes\mybatis\applyWage\ApplyWageMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalStateException: No typehandler found for property createTime
刚开始找问题，以为是前面的问题，什么注解错误，注解不起作用什么的，在网上搜了一大堆，发现没有什么可以解决问题的，后来，让同事看看，可能是日期类型转换的问题，这个问题在最后一段，开始没有当回事，最后才发现，原来这个问题才是最终造成BeanCreationException和BeanCreationException的原因，真是吐血三升，这个错误Cause: java.lang.IllegalStateException: No typehandler found for property createTime很直白，只是自以为是了，找了个类型转换的转换类加到mybatisConfig的配置类中
这里实体类中日期用的是Calendar，启动报错。
加上转换类，转换一下就没有问题了。。。
找问题要找对主要的