spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning

在搭建微服务的过程中，发现控制台一直在报这个警告日志。本着研究的目的，查看了下源码

[WARN][JpaBaseConfiguration$JpaWebConfiguration][219]: spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning

    @Bean
    public OpenEntityManagerInViewInterceptor openEntityManagerInViewInterceptor() {
        if (this.jpaProperties.getOpenInView() == null) {
            logger.warn("spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning");
        }

        return new OpenEntityManagerInViewInterceptor();
    }

因此，只需要设置open_in_view设置初始值即可：

spring:
  jpa:
    open-in-view: false    

这样启动就不会报告警了。

新建公众号：随风的java开发人生 共同进步。