如何使用WebTestClient连接http服务器？

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
</dependency>

@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class MyWebClientTest {

    @Autowired
    private WebTestClient webTestClient;

    // 测试方法...
}

@Test
public void testGetUsers() {
    webTestClient.get()
            .uri("/users")
            .exchange()
            .expectStatus().isOk()
            .expectHeader().contentType(MediaType.APPLICATION_JSON)
            .expectBodyList(User.class)
            .hasSize(2)
            .contains(new User("John Doe", 30))
            .contains(new User("Jane Smith", 25));
}