增加多环境配置

core-main/src/main/resources/application-dev.properties

@@ -0,0 +1,3 @@
+spring.datasource.url=jdbc:mysql://localhost:3306/exam_cloud_test?useUnicode=true&characterEncoding=UTF-8
+spring.datasource.username=root
+spring.datasource.password=root

core-main/src/main/resources/application-prod.properties

@@ -0,0 +1,3 @@
+spring.datasource.url=jdbc:mysql://qmthmysql.mysql.rds.aliyuncs.com:3306/exam_cloud_test?useUnicode=true&characterEncoding=UTF-8
+spring.datasource.username=exam_cloud
+spring.datasource.password=examcloud123!@#

core-main/src/main/resources/application-test.properties

@@ -0,0 +1,3 @@
+spring.datasource.url=jdbc:mysql://192.168.1.74:3306/exam_cloud_yun?useUnicode=true&characterEncoding=UTF-8
+spring.datasource.username=root
+spring.datasource.password=root

core-main/src/main/resources/application.properties

@@ -1,6 +1,4 @@
-spring.datasource.url=jdbc:mysql://localhost:3306/exam_cloud?useUnicode=true&characterEncoding=UTF-8
-spring.datasource.username=root
-spring.datasource.password=123456
+spring.profiles.active=dev
 spring.datasource.validation-query=SELECT 1 FROM DUAL
 spring.datasource.test-on-borrow=true
 spring.datasource.driver-class-name=com.mysql.jdbc.Driver