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Failed to bind properties under ‘spring.datasource.type‘ to java.lang.Class＜javax.sql.DataSource＞
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Description:
Failed to bind properties under 'spring.datasource.type' to java.lang.Class<javax.sql.DataSource>:
Property: spring.datasource.type
Value: com.machange.v2.c3p0.ComboPooledDataSource
Origin: class path resource [application.yml] - 9:11
Reason: No converter found capable of converting from type [java.lang.String] to type [java.lang.Class<javax.sql.DataSource>]
Action:
Update your application's configuration
Process finished with exit code 1
错误提示，yml文件9到11行。观察数据源配置
#数据源配置
spring:
datasource:
type: com.machange.v2.c3p0.ComboPooledDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/springboot?useUnicode=yes&characterEncoding=UTF-8&useSSL=false&serverTimezone=UTC
type输入错误，修改type，重新运行。
type: com.mchange.v2.c3p0.ComboPooledDataSource
成功。
2021-02-02 09:18:18.424 INFO 12192 --- [ main] com.shsxt.springboot.Starter : Starting Starter using Java 1.8.0_271 on PC-20200119CAVL with PID 12192 (D:\java_project\SpringBoot05\target\classes started by Administrator in D:\java_project\SpringBoot05)
2021-02-02 09:18:18.428 INFO 12192 --- [ main] com.shsxt.springboot.Starter : No active profile set, falling back to default profiles: default
2021-02-02 09:18:21.463 INFO 12192 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2021-02-02 09:18:21.476 INFO 12192 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2021-02-02 09:18:21.477 INFO 12192 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.41]
2021-02-02 09:18:21.670 INFO 12192 --- [ main] o.a.c.c.C.[.[.[/springboot_mybatis] : Initializing Spring embedded WebApplicationContext
2021-02-02 09:18:21.670 INFO 12192 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 3105 ms
2021-02-02 09:18:21.919 INFO 12192 --- [ main] c.a.d.s.b.a.DruidDataSourceAutoConfigure : Init DruidDataSource
2021-02-02 09:18:22.470 INFO 12192 --- [ main] com.alibaba.druid.pool.DruidDataSource : {dataSource-1} inited
2021-02-02 09:18:23.032 INFO 12192 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2021-02-02 09:18:23.421 INFO 12192 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path '/springboot_mybatis'
2021-02-02 09:18:23.437 INFO 12192 --- [ main] com.shsxt.springboot.Starter : Started Starter in 5.932 seconds (JVM running for 6.932)
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