呼和浩特铁路局刘彪,gexw,王菲惠
***************************
application failed to start
***************************
description:
failed to configure a datasource: 'url' attribute is not specified and no embedded datasource could be configured.
reason: failed to determine a suitable driver class
action:
consider the following:
if you want an embedded database (h2, hsql or derby), please put it on the classpath.
if you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).
问题原因: mybatis没有找到合适的加载类,其实是大部分spring - datasource - url没有加载成功,分析原因如下所示.
datasourceautoconfiguration会自动加载.
没有配置spring - datasource - url 属性.
spring - datasource - url 配置的地址格式有问题.
配置 spring - datasource - url的文件没有加载.
网上给出了这几种解决方案.
排除此类的autoconfig。启动以后就可以正常运行。
@springbootapplication(exclude= {datasourceautoconfiguration.class})
在application.properties/或者application.yml文件中没有添加数据库配置信息.
spring:
datasource:
url: jdbc:mysql://localhost:3306/read_data?useunicode=true&characterencoding=utf-8&usessl=false
username: root
password: 123456
driver-class-name: com.mysql.jdbc.driver
//正确示例
spring.datasource.url = jdbc:mysql://192.168.0.20:1504/f_me?setunicode=true&characterencoding=utf8
yml或者properties文件没有被扫描到,需要在pom文件中<build></build>添加如下.来保证文件都能正常被扫描到并且加载成功.
<!-- 如果不添加此节点mybatis的mapper.xml文件都会被漏掉。 -->
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.yml</include>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.yml</include>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
小编工作中试过方案四,完全可行
如对本文有疑问,请在下面进行留言讨论,广大热心网友会与你互动!! 点击进行留言回复
如何在java 8 stream表达式实现if/else逻辑
Java中有界队列的饱和策略(reject policy)原理解析
网友评论