Mybatis框架-Ibatis框架踩坑01-Java中BigInteger类型字段问题
目录
Mybatis框架–Ibatis框架踩坑01 – Java中BigInteger类型字段问题！
在Mybatis框架、 Ibatis框架中， 不支持Java中的 java.math.BigInteger 类型字段， 支持 java.math.BigDecimal 类型字段。 若Java实体类中，使用 java.math.BigInteger 类型字段，在使用 Mybatis、Ibatis框架进行数据处理时，会报错。
Mybatis中文在线网中介绍的Mybatis支持的数据类型与Java数据类型对应关系网址：
在下图所示部位，可以找到Mybatis中支持的数据类型与Java中数据类型对应关系。
在我开发过程中，与公司老员工交流过程中，兵哥建议我，Mysql中数据类型为 BigInteger、BigDecimal 的字段，Java中的属性使用 java.lang.Long、 java.lang.Integer、 java.lang.Dubbo、java.lang.Short 的数据类型定义。
在开发过程中，当我使用 Java.math.BigInteger数据类型时，Ibatis/Mybatis框架log日志报错内容如下所示。其中，prodAttrValueId属性采用Java中的 java.math.BigInteger 数据类型定义。
Exception in thread "main" java.lang.ExceptionInInitializerError
Caused by: org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'prodAttrService' defined in class path resource [applicationContext.xml]:
Cannot resolve reference to bean 'prodAttrDao' while setting bean property 'prodAttrDao';
nested exception is org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'prodAttrDao' defined in class path resource [applicationContext.xml]:
Cannot resolve reference to bean 'sqlMapClient' while setting bean property 'sqlMapClient';
nested exception is org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'sqlMapClient' defined in class path resource [applicationContext.xml]:
Invocation of init method failed;
nested exception is org.springframework.core.NestedIOException:
Failed to parse config resource: class path resource [sqlMapConfig.xml];
nested exception is com.ibatis.common.xml.NodeletException: Error parsing XML.
Cause: java.lang.RuntimeException: Error parsing XPath '/sqlMapConfig/sqlMap'.
Cause: com.ibatis.common.xml.NodeletException: Error parsing XML.
Cause: java.lang.RuntimeException: Error parsing XPath '/sqlMap/select'.
Cause: com.ibatis.common.beans.ProbeException: There is no READABLE property named 'prodAttrValueId' in class 'java.math.BigInteger'
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:329)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:107)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1393)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1134)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:626)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at com.web.asiainfo.main.ProductRun.<clinit>(ProductRun.java:29)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'prodAttrDao' defined in class path resource [applicationContext.xml]: Cannot resolve reference to bean 'sqlMapClient' while setting bean property 'sqlMapClient'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlMapClient' defined in class path resource [applicationContext.xml]: Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: Failed to parse config resource: class path resource [sqlMapConfig.xml]; nested exception is com.ibatis.common.xml.NodeletException: Error parsing XML. Cause: java.lang.RuntimeException: Error parsing XPath '/sqlMapConfig/sqlMap'. Cause: com.ibatis.common.xml.NodeletException: Error parsing XML. Cause: java.lang.RuntimeException: Error parsing XPath '/sqlMap/select'. Cause: com.ibatis.common.beans.ProbeException: There is no READABLE property named 'prodAttrValueId' in class 'java.math.BigInteger'
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:329)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:107)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1393)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1134)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:323)
... 15 more举一个简单的例子：
Java实体类
未完待续…………………….