fix: 数据库连接问题

pom.xml

@@ -56,6 +56,7 @@
         <dependency>
             <groupId>com.mysql</groupId>
             <artifactId>mysql-connector-j</artifactId>
+            <version>8.0.33</version>
             <scope>runtime</scope>
         </dependency>
         <dependency>

src/main/resources/application-dev.yml

@@ -3,7 +3,7 @@ server:
 
 spring:
   datasource:
-    url: jdbc:mysql://localhost:3306/qqflowengine?useUnicode=true&characterEncoding=utf8mb4&serverTimezone=Asia/Shanghai&createDatabaseIfNotExist=true
+    url: jdbc:mysql://localhost:3306/qqflowengine?useUnicode=true&characterEncoding=UTF-8&connectionCollation=utf8mb4_unicode_ci&serverTimezone=Asia/Shanghai&createDatabaseIfNotExist=true
     driver-class-name: com.mysql.cj.jdbc.Driver
     username: root
     password: root

src/main/resources/application-test.yml

@@ -1,6 +1,6 @@
 spring:
   datasource:
-    url: jdbc:mysql://192.168.1.139:3306/qqflowengine?useUnicode=true&characterEncoding=utf8mb4&serverTimezone=Asia/Shanghai
+    url: jdbc:mysql://192.168.1.139:3306/qqflowengine?useUnicode=true&characterEncoding=UTF-8&connectionCollation=utf8mb4_unicode_ci&serverTimezone=Asia/Shanghai
     driver-class-name: com.mysql.cj.jdbc.Driver
     username: qqflowengine
     password: 123456

src/main/resources/application.yml

@@ -5,7 +5,7 @@ spring:
   application:
     name: qqflowengine-backend
   datasource:
-    url: jdbc:mysql://localhost:3306/qqflowengine?useUnicode=true&characterEncoding=utf8mb4&serverTimezone=Asia/Shanghai&createDatabaseIfNotExist=true
+    url: jdbc:mysql://localhost:3306/qqflowengine?useUnicode=true&characterEncoding=UTF-8&connectionCollation=utf8mb4_unicode_ci&serverTimezone=Asia/Shanghai&createDatabaseIfNotExist=true
     driver-class-name: com.mysql.cj.jdbc.Driver
     username: root
     password: root