【MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found: 2】的更多相关文章

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found: 3报错解决

报错的原因翻译出来: 预期的一个结果(或null)返回selectOne(),但发现:3 意思就是你想得到一个结果值,但是返回了三个结果值. 一般可能测试的时候我们存了几条一样的数据,在登录时,会把同用户名数据都返回.但是mapper接口的返回值是一个Bean.所以报错. 解决方法: 可以修改返回值为list,然后获取第一条 或者把数据库中重复的数据删掉.…

Caused by: org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found: 2

异常信息 Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'tracMang': FactoryBean threw exception on object creation; nested exception is org.apache.ibatis.exceptions.TooManyResultsException: Expected one…

HTTP Status 500 - org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:

HTTP Status 500 - org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: type Exception report message org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.excepti…

错误信息： Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:

这个错误主要原因是:数据库的配置出问题,比如写错库名什么的,仔细检查下.…

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter 'username' not found. Available parameters are [1, 0, param1, param2]

Spring+mybatis错误:org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding. 今天使用spring+mybatis进行添加用户操作时出现以下错误: 复制代码 org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingExcepti…

解决：org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.builder.BuilderException: Error evaluating expression 'requestMap.maintenancename != null and requestMap.maintenance

异常如下:org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.builder.BuilderException: Error evaluating expression 'requestMap.maintenancename != null and requestMap.maintenancename != '''. Cause: org.apache.ibatis.ognl.OgnlE…

怪事年年有，今天特别多！org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter 'empno' not found. Available parameters are [emp, deptno, param1, param

错误: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter 'empno' not found. Available parameters are [emp, deptno, param1, param2] at org.mybatis.spring.MyBatisExceptionTranslator.transl…

【异常及源码分析】org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.type.TypeException: Could not set parameters for mapping: ParameterMapping

一.异常出现的场景 1)异常出现的SQL @Select("SELECT\n" + " id,discount_type ,min_charge, ${cardFee} AS actualDiscountPrice , discount_price AS discountPrice ,status ,name \n" + "FROM\n" + "\tuser_coupon \n" + "WHERE\n" +…

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter 'userId' not found. Available parameters are [arg1, arg0, param1, param2]

2018-06-27 16:43:45.552  INFO 16932 --- [nio-8081-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring FrameworkServlet 'dispatcherServlet'2018-06-27 16:43:45.552  INFO 16932 --- [nio-8081-exec-1] o.s.web.servlet.DispatcherServlet  …

SpringMvc错误：HTTP Status 500 - Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: There is n

HTTP Status 500 - Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: There is no getter for property named 'ItemsCustom' in 'class com.mybati…