Spring Cloud常见问题

Spring Cloud常见问题

ruoyi-cloud版本

*初次使用请一定要参考博客码云项目RuoYi-Cloud启动跳坑指南

1. RuoYiSystemApplication启动失败，数据库连接失败

• 原因：无法通过ry-config中ruoyi-system-dev.yml获取正确的jdbc连接
• 解决方案：检查默认的配置中是否和当前物理机的数据库情况一致，可能本地的数据库账号密码和ruoyi-config中默认的不一致，修改一致后重启即可。我的情况是ry-config在云数据库中，所以需要修改成云数据库的地址和密码。方式如下：

2.nacos 客户端无法连接

确保nacos client >=nacos server的版本即可

3.启动时候Invalid bound statement (not found):..mapper.SysConfigMapper.selectConfigList 报错

• 原因：有可能是配置文件未加载到导致或者bean注入失败。其实是nacos-server并未读取到配置
• 解决方法：不使用nacos的内置数据库，而是连接到ruoyi-config所在的数据库，加载到相应的配置即可。正确加载的nacos-dashboard页面如下：

4.集成MPP后@TEST类运行报错：Error creating bean with name ‘com.ruoyi.test.RuoyiTestApplicationTests’: Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type ‘com.ruoyi.test.mapper.ITestEntityMapper’ available: expected at least 1 bean which qualifies as autowire candidate.

org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘com.ruoyi.test.RuoyiTestApplicationTests’: Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type ‘com.ruoyi.test.mapper.ITestEntityMapper’ available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@javax.annotation.Resource(shareable=true, lookup=, name=, description=, authenticationType=CONTAINER, type=class java.lang.Object, mappedName=)}
at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessProperties(CommonAnnotationBeanPostProcessor.java:332)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1431)

• 原因：IxxMapper注入失败，调用时找不到
• 解决办法：启动类扫描这些包并进行注入。启动类加入注解
  @MapperScan(basePackages = "com.ruoyi.test.mapper")