为什么我的 spring-configuration-metadata.json 属性没有生成？

Question

我已经能够生成带有适当组部分的 spring-configuration-metadata.json 文件，但我的属性列表为空：

{
  "groups": [
    {
      "name": "test-configs",
      "type": "com.example.configpropsdemo.TestConfigs",
      "sourceType": "com.example.configpropsdemo.TestConfigs"
    }
  ],
  "properties": [],
  "hints": []
}

我的配置属性类如下所示：

@Validated
@Component
@ConfigurationProperties(prefix = "test-configs")
public class TestConfigs extends ArrayList<TestConfigs.TestConfig> {

    @Validated
    public static class TestConfig {

        @NotBlank
        private String configName;

        @NotBlank
        private String username;

        @NotBlank
        private String password;

        //getters and setters...

    }
}

我正在使用 gradle，我的 build.gradle 如下所示：

plugins {
    id 'org.springframework.boot' version '2.1.4.RELEASE'
    id 'java'
}

apply plugin: 'io.spring.dependency-management'

group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '11'

repositories {
    mavenCentral()
}

dependencies {
    annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'
    implementation 'org.springframework.boot:spring-boot-starter-validation'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
}

是什么赋予了？我需要在 TestConfigs 类中添加一些内容吗？

Answer 1

需要使用@Setter。这是一个简单的示例（STS4 - SpringBoot - Maven - RestTemplate - 微服务）：

客户类别

@Component
@ConfigurationProperties(prefix = "brewery", ignoreUnknownFields = false)
@Setter
public class BreweryClient {
    private final RestTemplate restTemplate;
    private String apihost;
    public final String BEER_PATH_V1 = "/api/v1/beer/";

    public BreweryClient(RestTemplateBuilder restTemplateBuilder) {
        this.restTemplate = restTemplateBuilder.build();
    }

    public BeerDto getBeerById(UUID id) {
        return restTemplate.getForObject(apihost + BEER_PATH_V1 + id.toString(), BeerDto.class);
    }
}

测试班

@SpringBootTest
@RunWith(SpringRunner.class)
@Slf4j
public class BreweryClientTest {

    @Autowired
    BreweryClient client;

    @Test
    public void testGetBeerById() {
        BeerDto beer = client.getBeerById(UUID.randomUUID());
        assertNotNull(beer);
    }
}

应用程序属性

brewery.apihost=http://localhost:8080

pom.xml

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
</dependency>