data.jpa.repository.JpaRepository; import org.springframework.stereotype.Repository; @Repository public interface UserRepository extends JpaRepository<User, Integer> { } Service - package com.example.boottestfinal; import org.springframework.beans.factory.annotation.Autowired; import com.exam...
概述:这个比较特殊,不属于Repository体系,它实现一组JPA Criteria查询相关的方法,主要是用来做复杂的查询的接口(辅助接口)。 注意事项:这个接口很特殊,不属于Repository体系,而Spring data JPA不会自动扫描识别,所以会报找不到对应的Bean,我们只需要继承任意一个继承了Repository的子接口或直接继承Repository接口,Spring da...
这有链接 https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-jpa/2.2.0.RELEASE 找到下面这个maven的依赖界面关于jpa的,把它copy下来到你pom.xml下: 下贴代码: <!-- https://mvnrepository.com/artifact/org.springframework.bo...
spring boot jpa 使用<S extends T> List<S> findAll(Example<S> example)查询数据 直接上代码 //查询条件对象 TinventivePrinciple time = new TinventivePrinciple(); //设置需要查询的条件(赋值) time.setIsTime(Short.parseShort("1")); //定义example1 Example<TinventivePrinciple> example1 = Example....
spring boot jpa 使用<S extends T> List<S> findAll(Example<S> example)查询数据 直接上代码 //查询条件对象 TinventivePrinciple time = new TinventivePrinciple(); //设置需要查询的条件(赋值) time.setIsTime(Short.parseShort("1")); //定义example1 Example<TinventivePrinciple> example1 = Example....
<!-- Spring Boot --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- JPA Data --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> ...
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPost...
找到下面这个maven的依赖界面关于jpa的,把它copy下来到你pom.xml下: 下贴代码: <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-jpa --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> ...
-- Spring Boot --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- JPA Data --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency>...