完成代码

src/main/java/com/shr/utils/DataSource.java

@@ -4,12 +4,12 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.stereotype.Component;
 
-@Component
-//@ConfigurationProperties(prefix = "spring.datasource")
+//@Component
+@ConfigurationProperties(prefix = "spring.datasource")
 public class DataSource {
 	public String url;
 	public String username;
 	public String password;
-	//@Value("${datasource.driver-class-name}")
+	@Value("${datasource.driver-class-name}")
 	public String driverclassname;
 }