主要错误：Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
Failed to configure data sources: not specified "url" attribute can not configure the embedded data source.
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2019-06-03 09:47:45.300 ERROR 23160 --- [ main] 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).
the reason:
spring boot is loaded by default org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration class, DataSourceAutoConfiguration class uses the annotation @Configuration injected dataSource bean to spring. Because the project is not related to the dataSource configuration information, create dataSource bean when spring due to a lack of relevant information will be given.
Two solutions
1. Application class added to the
@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})
2. Configuration Data Source:
For example in the application configuration file:
= class-name-spring.datasource.driver com.mysql.jdbc.Driver
spring.datasource.url = jdbc: MySQL: // ip: port number / name of the database useSSL = false & useUnicode = true & characterEncoding = utf8 & serverTimezone = GMT% 2B8?