在pom.xml增加依赖的坐标
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.3.1</version>
</dependency>
<!-- <dependency>-->
<!-- <groupId>com.mysql</groupId>-->
<!-- <artifactId>mysql-connector-j</artifactId>-->
<!-- <scope>runtime</scope>-->
<!-- </dependency>-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.26</version>
<scope>runtime</scope>
</dependency>
报错如下：
18:42:43.414 [Thread-1] DEBUG org.springframework.boot.devtools.restart.classloader.RestartClassLoader - Created RestartClassLoader org.springframework.boot.devtools.restart.classloader.RestartClassLoader@5d1c613f
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.7.14-SNAPSHOT)
2023-07-02 18:42:43.653 INFO 73321 --- [ restartedMain] com.oo2.oo2.Oo2Application : Starting Oo2Application using Java 1.8.0_361 on JAMESSHI-MB2 with PID 73321 (/Users/jamesshi/java/oo2/target/classes started by jamesshi in /Users/jamesshi/java/oo2)
2023-07-02 18:42:43.654 INFO 73321 --- [ restartedMain] com.oo2.oo2.Oo2Application : No active profile set, falling back to 1 default profile: "default"
2023-07-02 18:42:43.682 INFO 73321 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2023-07-02 18:42:43.682 INFO 73321 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
2023-07-02 18:42:44.102 WARN 73321 --- [ restartedMain] o.m.s.mapper.ClassPathMapperScanner : No MyBatis mapper was found in '[com.oo2.oo2]' package. Please check your configuration.
2023-07-02 18:42:44.459 INFO 73321 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8885 (http)
2023-07-02 18:42:44.464 INFO 73321 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2023-07-02 18:42:44.465 INFO 73321 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.76]
2023-07-02 18:42:44.508 INFO 73321 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2023-07-02 18:42:44.509 INFO 73321 --- [ restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 827 ms
2023-07-02 18:42:44.751 WARN 73321 --- [ restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class
2023-07-02 18:42:44.753 INFO 73321 --- [ restartedMain] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2023-07-02 18:42:44.769 INFO 73321 --- [ restartedMain] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2023-07-02 18:42:44.791 ERROR 73321 --- [ 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
这是因为配置文件application.properties里面没有配置mysql对应的信息
spring.datasource.url=jdbc:mysql://localhost:3306?characterEncoding=UTF8&autoReconnect=true&serverTimezone=Asia/Shanghai
spring.datasource.username=root
spring.datasource.password=12345678
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
这次可以启动成功了
18:49:25.626 [Thread-1] DEBUG org.springframework.boot.devtools.restart.classloader.RestartClassLoader - Created RestartClassLoader org.springframework.boot.devtools.restart.classloader.RestartClassLoader@5d1c613f
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.7.14-SNAPSHOT)
2023-07-02 18:49:25.916 INFO 75190 --- [ restartedMain] com.oo2.oo2.Oo2Application : Starting Oo2Application using Java 1.8.0_361 on JAMESSHI-MB2 with PID 75190 (/Users/jamesshi/java/oo2/target/classes started by jamesshi in /Users/jamesshi/java/oo2)
2023-07-02 18:49:25.917 INFO 75190 --- [ restartedMain] com.oo2.oo2.Oo2Application : No active profile set, falling back to 1 default profile: "default"
2023-07-02 18:49:25.957 INFO 75190 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2023-07-02 18:49:25.957 INFO 75190 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
2023-07-02 18:49:26.541 WARN 75190 --- [ restartedMain] o.m.s.mapper.ClassPathMapperScanner : No MyBatis mapper was found in '[com.oo2.oo2]' package. Please check your configuration.
2023-07-02 18:49:26.990 INFO 75190 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8885 (http)
2023-07-02 18:49:26.998 INFO 75190 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2023-07-02 18:49:26.999 INFO 75190 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.76]
2023-07-02 18:49:27.072 INFO 75190 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2023-07-02 18:49:27.073 INFO 75190 --- [ restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1116 ms
2023-07-02 18:49:27.540 INFO 75190 --- [ restartedMain] o.s.b.d.a.OptionalLiveReloadServer : LiveReload server is running on port 35729
2023-07-02 18:49:27.582 INFO 75190 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8885 (http) with context path ''
2023-07-02 18:49:27.591 INFO 75190 --- [ restartedMain] com.oo2.oo2.Oo2Application : Started Oo2Application in 1.959 seconds (JVM running for 2.464)