Spring Boot Mongodb在应用程序关闭时删除全部

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.mongodb.MongoDatabaseFactory;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.SimpleMongoClientDatabaseFactory;
import org.springframework.data.mongodb.core.mapping.event.AbstractMongoEventListener;
import org.springframework.data.mongodb.core.mapping.event.BeforeDeleteEvent;
import org.springframework.data.mongodb.repository.config.EnableMongoRepositories;

@Configuration
@EnableMongoRepositories(basePackages = "com.example.repository")
public class MongoConfig {

    @Autowired
    private ApplicationContext applicationContext;

    @Bean
    public MongoDatabaseFactory mongoDatabaseFactory() {
        // 配置MongoDB连接信息
        return new SimpleMongoClientDatabaseFactory("mongodb://localhost/testdb");
    }

    @Bean
    public MongoTemplate mongoTemplate(MongoDatabaseFactory databaseFactory) {
        return new MongoTemplate(databaseFactory);
    }

    @Bean
    public AbstractMongoEventListener<Object> deleteAllListener() {
        return new AbstractMongoEventListener<Object>() {
            @Override
            public void onBeforeDelete(BeforeDeleteEvent<Object> event) {
                // 在删除数据之前执行清空全部数据操作
                // 根据需要删除对应的集合或执行删除全部数据的方法
                // 例如：
                // mongoTemplate.dropCollection("collectionName");
                // 或者
                // mongoTemplate.remove(new Query(), "collectionName");
            }
        };
    }
}

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;

@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        ConfigurableApplicationContext context = SpringApplication.run(Application.class, args);
        context.registerShutdownHook(); // 注册关闭钩子，确保监听器能够被正确触发
    }
}