SpringBoot异常集

异常及解决办法

spring 及 springboot 异常

1.springboot测试类运行报错找不到测试类

报:Class not found com.cy.cj.common.cache.DefaultTest

原因 检查发现pom.xml文件中少添加了下面的依赖

<dependency>
    <groupId>org.junit.platform</groupId>
    <artifactId>junit-platform-launcher</artifactId>
</dependency>

2.SringBoot测试类运行,控制台包 nosuchbean错误

原因: 没有对应bean的定义

3.goods项目页面数据呈现报错,只呈现表头,不呈现表数据

原因

4.Ajax get请求send(null)报错

Failed to load source:the server responded with a status 500()

mybatis异常及解决办法

1.永和项目门店信息修改页面数据呈现报错

exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.executor.ExecutorException: A query was run and no Result Maps were found for the Mapped Statement 'com.tedu.dao.DoorMapper.findById'.  It's likely that neither a Result Type nor a Result Map was specified.] with root cause

原因 检查发现mapper.xml文件的select标签少了resultType

<select id="findById" resultType="com.tedu.pojo.Door" >
        select * from tb_door where id =#{id}
    < /select>

2.永和项目门店信息修改 表单提交报错

错误: The origin server did not find a current representation for the target resource or is not willing to disclose that one exists

原因 form表单里的action="doorUpdate"属性的值与controller里@RequestMapping("/updateDoor") 不同导致

### 3.添加订单时,跳转增加页面时报错 空指针错
错误

原因 缺少下面的注解