解决在springboot测试中@value 获取server.port=-1情况锦瑟年华,逐梦之人-@value(${server.port}) 无法获取

问题描述

application.yml部分配置配置项如下：

server: port: 8080 domain: localhost 

配置项对应的类代码如下：

@Component @Data public class SiteConfig { //域名 @Value("${domain:#{null}}") private String domain; //端口号 @Value("${server.port:#{8081}}") private Integer port; } 

测试类代码如下：

@Slf4j @SpringBootTest class SiteConfigTest { @Resource private SiteConfig siteConfig; @Test void getDomain() {         log.info("siteConfig: {}", siteConfig.getDomain()); assertEquals("localhost", siteConfig.getDomain()); } @Test void getPort() {         log.info("Port: {}", siteConfig.getPort()); assertEquals(8080, siteConfig.getPort()); } } 

在测试方法getPort()中，端口号port获取的值为-1。

原因

测试类启动springboot程序时并没有以配置端口启动服务，所以我们要以配置端口的方式启动服务。
org.springframework.boot.test.context.SpringBootContextLoader＃getInlinedProperties

protected String[] getInlinedProperties(MergedContextConfiguration config) {     ArrayList<String> properties = new ArrayList<String>(); // JMX bean names will clash if the same bean is used in multiple contexts disableJmx(properties);     properties.addAll(Arrays.asList(config.getPropertySourceProperties())); if (!isEmbeddedWebEnvironment(config) && !hasCustomServerPort(properties)) {         properties.add("server.port=-1"); } return properties.toArray(new String[properties.size()]); } 

解决

在@SpringBootTest中添加属性值@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT)

@Slf4j @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT) class SiteConfigTest { @Resource private SiteConfig siteConfig; @Test void getDomain() {         log.info("siteConfig: {}", siteConfig.getDomain()); assertEquals("localhost", siteConfig.getDomain()); } @Test void getPort() {         log.info("Port: {}", siteConfig.getPort()); assertEquals(8080, siteConfig.getPort()); } } 

参考

https://stackoverflow.com/questions/46684818/springboot-test-valueserver-port