更新

build.gradle

@@ -33,6 +33,7 @@ dependencies {
     implementation('org.springframework.boot:spring-boot-starter-thymeleaf')
     implementation('org.springframework.boot:spring-boot-starter-aop')
     implementation('org.springframework.boot:spring-boot-starter-validation')
+    implementation 'org.springframework.boot:spring-boot-starter-data-mongodb'
     //implementation('org.springframework.boot:spring-boot-starter-amqp')
     //implementation('org.springframework.kafka:spring-kafka')
     compile('mysql:mysql-connector-java')