org.springframework.dao.InvalidDataAccessResourceUsageExcept

Question

我正在Spring的存储库中编写一个自定义查询的单元测试。我正在使用一个h2内存数据库来创建一个员工，并对该员工执行一个断言，该断言应该从自定义查询返回。当我从存储库调用save方法时，会抛出以下错误:

org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet

我将包括我的pom.xml以及用于存储库和测试的代码。

单元测试

package com.stg.mlindow.javabootrestcert.stgbootrestcert.employee;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase;
import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.ActiveProfiles;
import org.springframework.test.context.TestPropertySource;
import java.util.ArrayList;
import java.util.List;
import static org.junit.jupiter.api.Assertions.*;

@AutoConfigureTestDatabase
@ActiveProfiles("test")
@TestPropertySource(locations = "classpath:application-test.properties")
@DataJpaTest
class EmployeeRepositoryTest {
@Autowired
private EmployeeRepository employeeRepository;
@Test
void findAllByBossId() {
Employee employee = new Employee(
"CEO",
"Bruce",
"Wayne",
null
);
employeeRepository.save(employee);
List<Employee> employees = employeeRepository.findAllByBossId(null);
List<Employee> expected = new ArrayList<Employee>() {
{
add(employee);
}
};
assertIterableEquals(expected, employees);
}
}

Pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.7</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.stg.mlindow.javabootrestcert</groupId>
<artifactId>stg-boot-rest-cert</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>stg-boot-rest-cert</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.1</version>
</dependency>
<dependency>
<groupId>org.jetbrains</groupId>
<artifactId>annotations</artifactId>
<version>23.1.0</version>
<scope>compile</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

application-test.properties

##### Database #####
spring.datasource.url=jdbc:h2://mem:db;DB_CLOSE_DELAY=-1
spring.datasource.username=sa
spring.datasource.password=sa
spring.datasource.driver-class-name=org.h2.Driver
spring.jpa.hibernate.ddl-auto=create-drop
spring.jpa.show-sql=true
spring.jpa.properties.hibernate.format_sql=true
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQL81Dialect

库

package com.stg.mlindow.javabootrestcert.stgbootrestcert.employee;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.repository.PagingAndSortingRepository;
import org.springframework.stereotype.Repository;
import java.math.BigInteger;
import java.util.List;
import java.util.Optional;
@Repository
public interface EmployeeRepository extends JpaRepository<Employee, BigInteger>,
PagingAndSortingRepository<Employee, BigInteger> {
List<Employee> findAllByBossId(BigInteger bossId);
}

我已经尝试了这个问题的建议，但它没有解决我的问题。我期望测试创建一个雇员，然后尝试通过老板id从h2数据库检索新创建的雇员。然后，它将断言两个列表相等。

Answer 1

我通过修复我的application-test中的一个错误来解决这个问题。

##### Database #####
spring.datasource.url=jdbc:h2://mem:db;DB_CLOSE_DELAY=-1
spring.datasource.username=sa
spring.datasource.password=sa
spring.datasource.driver-class-name=org.h2.Driver
spring.jpa.hibernate.ddl-auto=create-drop
spring.jpa.show-sql=true
spring.jpa.properties.hibernate.format_sql=true
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.H2Dialect

spring.jpa.properties.hibernate.dialect需要设置为H2Dialect而不是PostgreSQLDialect。这正是@Lesiak所怀疑的。