spring-springJDBC的queryForObject查找对象出错(Incorrect column count: expected 1, actual 13)

本文探讨了使用SpringJDBC的queryForObject方法时出现的IncorrectResultSetColumnCountException异常,通过调整RowMapper实现正确获取数据库记录。

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spring-springJDBC的queryForObject查找对象出错

错误提示:

Exception in thread 'main' org.springframework.jdbc.IncorrectResultSetColumnCountException: Incorrect column count: expected 1, actual 13


错误位置:

Contract contract =jdbc.queryForObject("select * from contract where id=15",Contract,class);


测试过程:

刚开始以为我建的类的属性和表中的字段不匹配,我又对了好几遍发现没错;又以为Contract 类中金额属性为int类型太小,可是发现还不是这里的问题。

解决方法:

RowMapper<Contract > rm = ParameterizedBeanPropertyRowMapper.newInstance(Contract .class);

Contract contract = (Contract ) this.jdbcTemplate.queryForObject("select * from contract where id=15", rm);

这是为什么呢?

参考网站:http://www.cnblogs.com/wumian/articles/2012-10-25-2056.html

从orcale更换到mysql,springbatch运行偶尔会报错: org.springframework.dao.EmptyResultDataAccessException: Incorrect result size: expected 1, actual 0 at org.springframework.dao.support.DataAccessUtils.nullableSingleResult(DataAccessUtils.java:97) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:784) at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:809) at org.springframework.batch.core.repository.dao.JdbcJobExecutionDao.synchronizeStatus(JdbcJobExecutionDao.java:308) at org.springframework.batch.core.repository.support.SimpleJobRepository.update(SimpleJobRepository.java:166) at sun.reflect.GeneratedMethodAccessor147.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:366) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:99) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212) at com.sun.proxy.$Proxy85.update(Unknown Source) at sun.reflect.GeneratedMethodAccessor147.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$PassthruAdvice.invoke(SimpleBatchConfiguration.java:127) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
03-28
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