SpringBoot+PostgreSQL项目构建报错：数据源配置与Gradle弃用问题

环境信息 #

• 操作系统：Windows 11
• 开发工具：VS Code（编写Java代码）
• 构建与运行：通过CMD执行Gradle命令

项目背景 #

参考Spring Boot + PostgreSQL分步指南创建项目，用Spring Initializr生成初始结构，仅删除/修改了不需要的函数和变量。

遇到的问题 #

1. 执行./gradlew build时，出现Gradle版本兼容警告：

'Deprecated Gradle features were used in this build, making it incompatible with Gradle 9.0'
已尝试从Gradle 8.5降级到8.4，警告仍存在。

2. 查看构建生成的HTML报告，发现核心数据源配置错误：

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured. Reason: Failed to determine a suitable driver class

3. 尝试在application.properties中添加spring.datasource.driver-class-name=com.mysql.jdbc.Driver后，数据源错误消失，但出现Flyway Bean初始化失败：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'flyway'...

4. 执行./gradlew build --warning-mode all后，收到Gradle测试框架依赖自动加载的弃用提示，不知道该怎么调整配置。

关键代码文件 #

build.gradle #

plugins {
    id 'java'
    id 'org.springframework.boot' version '3.2.1'
    id 'io.spring.dependency-management' version '1.1.4'
}

group = 'com.example'
version = '0.0.1-SNAPSHOT'

java {
    sourceCompatibility = '17'
}

configurations {
    compileOnly {
        extendsFrom annotationProcessor
    }
}

repositories {
    mavenCentral()
}

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-actuator'
    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    implementation 'org.flywaydb:flyway-core'
    compileOnly 'org.projectlombok:lombok'
    runtimeOnly 'org.postgresql:postgresql'
    annotationProcessor 'org.projectlombok:lombok'
    testImplementation 'junit:junit:4.12'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
}

tasks.named('test') {
    useJUnitPlatform()
}

SmiTbackendProjectApplication.java #

package com.example.SMITbackend;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;

@EnableJpaRepositories
@SpringBootApplication
public class SmiTbackendProjectApplication {

    public static void main(String[] args) {
        SpringApplication.run(SmiTbackendProjectApplication.class, args);
    }

}

Contact.java #

package com.example.SMITbackend.entity;

import jakarta.persistence.Entity;
import jakarta.persistence.Id;
import jakarta.persistence.Table;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@NoArgsConstructor
@AllArgsConstructor
@Data
@Entity
@Table(name = "contact")
public class Contact {
    @Id
    private Integer id;
    private String realName;
    private String codeName;
    private String phoneNumber;
}

ContactController.java #

package com.example.SMITbackend.controller;

import com.example.SMITbackend.entity.Contact;
import com.example.SMITbackend.service.ContactService;
import lombok.RequiredArgsConstructor;
import org.springframework.http.ResponseEntity;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/contact")
@RequiredArgsConstructor
@Validated
public class ContactController {
    
    private final ContactService contactService;

    @GetMapping("/")
    public ResponseEntity<List<Contact>> getAllContacts(){
        return ResponseEntity.ok().body(contactService.getAllContacts());
    }

    @PostMapping("/")
    public ResponseEntity<Contact> saveContact(@RequestBody Contact contact)
    {
        return ResponseEntity.ok().body(contactService.saveContact(contact));
    }
}

ContactRepository.java #

package com.example.SMITbackend.repository;

import org.springframework.data.jpa.repository.JpaRepository;
import com.example.SMITbackend.entity.Contact;

public interface ContactRepository extends JpaRepository<Contact, Integer>{
    
}

ContactService.java #

package com.example.SMITbackend.service;

import com.example.SMITbackend.entity.Contact;
import com.example.SMITbackend.repository.ContactRepository;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;
import java.util.Optional;

@Service
@RequiredArgsConstructor
@Slf4j
public class ContactService {

    private final ContactRepository contactRepository;

    public List<Contact> getAllContacts(){
        return contactRepository.findAll();
    }

    public Contact saveContact (Contact contact){
        Contact savedContact = contactRepository.save(contact);

        return contact;
    }
}

application.properties #

spring:
  application:
    name: springboot
  jackson:
    property-naming-strategy: SNAKE_CASE
  flyway:
    locations: classpath:/db/migration
    schemas: contacts
    baselineOnMigrate: true
    enabled: true
  datasource:
    driverClassName: org.postgresql.Driver
    url: jdbc:postgresql://localhost:5432/contacts?currentSchema=contacts
    username: postgres
    password: {my password}

内容的提问来源于stack exchange，提问作者Adren4linRu5h