~~~ import org.junit.Before; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.boot.test.web.client.TestRestTemplate; import org.springframework.boot.web.server.LocalServerPort; import org.springframework.http.ResponseEntity; import org.springframework.test.context.junit4.SpringRunner; import java.net.URL; /** * <p> * 嵌入式服务器由随机端口启动webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT * 并且在运行时发现实际端口@LocalServerPort */ @RunWith(SpringRunner.class) @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT) public class HelloApplicationTestBySpringBoot { @LocalServerPort private int port; private URL base; @Autowired private TestRestTemplate template; @Before public void setup() throws Exception { this.base = new URL("http://localhost:" + port + "/"); } @Test public void getHello() throws Exception { ResponseEntity<String> response = template.getForEntity(base.toString(), String.class); assert (response.getBody().equals("Greetings from Spring Boot!")); } } ~~~