错误
2023-04-15 11:56:16.025 INFO 12028 --- [ restartedMain] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2023-04-15 11:56:16.060 ERROR 12028 --- [ restartedMain] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
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).
Process finished with exit code 0
问题描述
Spring Boot项目中含有Mybatis,打Jar包运行之后,报如下错误.
问题分析及解决方案
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.
方案一 (解决原因1)
排除此类的autoconfig。启动以后就可以正常运行。
@SpringBootApplication(exclude= {DataSourceAutoConfiguration.class})
方案二 (解决原因2)
在application.properties或者application.yml文件中没有添加数据库配置信息.
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver spring.datasource.url=jdbc:mysql://localhost:3306/mini_card?useUnicode=true&characterEncoding=UTF-8&servertimezone=utc&useSSL=false spring.datasource.name=root spring.datasource.password=root
方案三 (解决原因3)
在spring xml配置文件中引用了数据库地址 所以需要对:等进行转义处理.但是在application.properties/或者application.yml文件并不需要转义,错误和正确方法写在下面了.
//错误示例 spring.datasource.url = jdbc:mysql\://192.168.0.20\:1504/f_me?setUnicode=true&characterEncoding=utf8
//正确示例 spring.datasource.url = jdbc:mysql://192.168.0.20:1504/f_me?setUnicode=true&characterEncoding=utf8
方案四 (解决原因4)
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>
转： https://www.jianshu.com/p/836d455663da
标签：SpringBoot,no,url,spring,yml,application,报错,datasource,properties From： https://www.cnblogs.com/fps2tao/p/17320839.html