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博客园 - 代码猫

Spring boot 打成jar包,并运行jar包。 MySQL中两个DateTime字段相减,得到秒,分,天数 mybatis中大于等于小于等于的写法 Spring boot 自定义注解,Java通过反射获取注解,及注解的说明,附源码下载! Spring boot 自定义注解+@Aspect实现切面输出日志,附源码下载! HTML5 Canvas基础教程 SpringBoot+Jpa动态切换多数据源配置及实现 MySQL使用DATE_FORMAT()函数格式化日期 Java List转String数组与String数组转List MySQL使用IF函数来动态执行where条件 JPA忽略实体类某属性,不持久化某字段的解决方法 git 常用命令 Windows系统CMD窗口下,MySQL建库、还原数据库命令操作示例 MySQL 5.7 执行SQL报错:1055 - Expression #3 of SELECT list is not in GROUP BY clause and contains nonaggregated column 的解决办法 Java8使用实现Runnable接口方式创建新线程的方法 windows查看端口被占用情况 Windows环境下设置Tomcat8以服务的形式运行,不再打开Tomcat窗口 MySql添加字段命令 Java中String、LocalDateTime、LocalDate、Date互转
Java JPA 报java.lang.IllegalArgumentException: Validation failed for query for method public abstract ...异常的一种原因和解决办法
代码猫 · 2019-12-25 · via 博客园 - 代码猫

背景

JDK版本:1.8

框架:SpringBoot 2.x

ORM:JPA

异常

全部的异常信息没有贴出来,太多了,关键就下面这一句

java.lang.IllegalArgumentException: Validation failed for query for method public abstract java.lang.Integer com.ess.fsjs.useWaterPlan.dao.PlanTotalIndicatorsDao.queryMaxPlanYear()!

从这个异常信息上看,提示的比较泛,只是说查询验证失败,有多种错误可能都会出现这个提示。

找到具体的报错方法,即:com.ess.fsjs.useWaterPlan.dao.PlanTotalIndicatorsDao.queryMaxPlanYear(),看下代码:

/**
 * 查询有计划指标总量的最大年份
 * @return
 */
@Query(value = "select max(plan_year) from t_plan_total_indicators")
Integer queryMaxPlanYear();

很简单的一个查询,使用了原生SQL,可以看出SQL没有问题。JPA使用原生SQL语句时,需要nativeQuery = true,所以问题就出在这里,加上就好了。

修改后的代码:

/**
 * 查询有计划指标总量的最大年份
 * @return
 */
@Query(value = "select max(plan_year) from t_plan_total_indicators", nativeQuery = true)
Integer queryMaxPlanYear();