【Error:java: Can‘t generate mapping method with primitive return type.报错】的更多相关文章

Error:java: Can‘t generate mapping method with primitive return type.报错

原因:Spring项目中使用了JPA以及Mybatis–mapper文件注解引错包导致编译错误 解决: 错误:import org.mapstruct.Mapper;正确路径:import org.apache.ibatis.annotations.Mapper;学习小笔记:JPA 1.什么是jpa呢?JPA顾名思义就是Java Persistence API的意思,是JDK 5.0注解或XML描述对象-关系表的映射关系,并将运行期的实体对象持久化到数据库中.12.jpa具有什么优势?2.1标准…

delete attempted to return null from a method with a primitive return type (int)

今天被自己给蠢死了 今天在代码中遇到这个错误, 百度翻译一下:映射方法,从一org.system.mapper.child.chmorganizationexaminationmapper.delete返回零作为一个原始的方法的返回类型(int). org.apache.ibatis.binding.BindingException: Mapper method 'org.system.mapper.child.ChmOrganizationExaminationMapper.delete at…

rg.apache.ibatis.binding.BindingException: Mapper method 'com.dao.Cameao.getOnlineDayRation attempted to return null from a method with a primitive return type (float)

本文为博主原创,未经允许不得转载: 异常展示如下: org.apache.ibatis.binding.BindingException: Mapper method 'com.dao.Cameao.getOnlineDayRation attempted to return null from a method with a primitive return type (float). at org.apache.ibatis.binding.MapperMethod.execute(Mapp…

org.apache.ibatis.binding.BindingException: Mapper method 'attempted to return null from a method with a primitive return type (long).

一.问题描述 今天发现测试环境报出来一个数据库相关的错误 org.apache.ibatis.binding.BindingException: Mapper method 'attempted to return null from a method with a primitive return type (long). 二.问题根源 经过查询后发现,Mybatis 在查询id信息的时候返回类型为long ,没有留意long和Long的区别. Long是long的包装类,long是基本数据类…

attempted to return null from a method with a primitive return type (int).

java接口文件 package com.cyb.ms.mapper; import org.apache.ibatis.annotations.Param; public interface AccountMapper { void update(@Param("name") String name, @Param("money") int money); int queryMoney(String name); } xml文件 <?xml version=…

Mapper method 'com.xxxx.other.dao.MyDao.getNo attempted to return null from a method with a primitive return type (int)

使用myBatis调用存储过程的返回值,提示错误信息: org.apache.ibatis.binding.BindingException: Mapper method 'com.xxxx.other.dao.MyDao.getNo attempted to return null from a method with a primitive return type (int). 先查mysql监控语句,发现存储过程调用正常,也得到了返回值,继续查 对应的文件 存储过程: CREATE PRO…

mybatis查询时使用基本数据类型接收报错-attempted to return null from a method with a primitive return type (int)

一.问题由来 自己在查看日志时发现日志中打印了一行错误信息为: 组装已经放养的宠物数据异常--->Mapper method 'applets.user.mapper.xxxMapper.xxxmyRank attempted to return null from a method with a primitive return type (int). 意思很好理解,就是在某个mapper文件中的xxxmyRank 这个查询方法返回一个null,可是却需要返回一个int类型的数,因此报错. 二…

mysql查询null异常:attempted to return null from a method with a primitive return type

select sum(deposit_amount)from tb_commission_ib_day mysql查询时报异常: attempted to return null from a method with a primitive return type 是因为查询时结果是 null, 需要给默认值 select IFNULL(sum(deposit_amount),0) from tb_commission_ib_day…

Java：延迟功能的Robot在Lunix系统上会报错

Java:延迟功能的Robot在Lunix系统上会报错 关于延迟功能的Robot: 今天开发过程中发现,本机开发好的项目,部署到Lunix服务器竟然报错!查了代码发现: Robot r = new Robot(); //延时执行 r.delay(8000); 这个延迟函数,在Lunix上会报异常: 更改为: //延时执行 Thread.currentThread().sleep(8000);//毫秒 解决问题,Lunix上也是飞快的跑起来.…

Tomcat启动报错java.net.AbstractPlainSocketImpl(java/net/AbstractPlainSocketImpl.java:178:-1)Struts在网络复杂情况下启动报错解决办法

SSH项目 在网络复杂的情况(具体规律未知)下,Tomcat启动时,报如下错误: [ERROR] 2014-08-12 14:52:58,484 [org.apache.struts2.dispatcher.Dispatcher :27] - Dispatcher initialization failedUnable to load configuration. - Class: java.net.AbstractPlainSocketImplFile: AbstractPlainSocket…