SpringBoot实战(十)之使用Spring Boot Actuator构建RESTful Web服务
一、导入依赖 <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>org.springframework</groupId> <artifactId>gs-actuator-service</artifactId> <version>0.1.0</version> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.8.RELEASE</version> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <properties> <java.version>1.8</java.version> </properties> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project> 二、构建实体 package hello; public class Greeting { private final long id; private final String content; public Greeting(long id, String content) { this.id = id; this.content = content; } public long getId() { return id; } public String getContent() { return content; } } 三、编写Controller package hello; import java.util.concurrent.atomic.AtomicLong; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; @Controller public class HelloWorldController { private static final String template = "Hello, %s!"; private final AtomicLong counter = new AtomicLong(); @GetMapping("/hello-world") @ResponseBody public Greeting sayHello(@RequestParam(name="name", required=false, defaultValue="Stranger") String name) { return new Greeting(counter.incrementAndGet(), String.format(template, name)); } } 四、编写配置文件 server.port: 9000 management.server.port: 9001 management.server.address: 127.0.0.1 五、编写启动类 package hello; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; /** * 使用Spring Boot Actuator构建RESTful Web服务 * */ @SpringBootApplication public class HelloWorldApplication { public static void main(String[] args) { SpringApplication.run(HelloWorldApplication.class, args); } } 六、编写测试类 /* * Copyright 2012-2014 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package hello; import java.util.Map; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.boot.test.web.client.TestRestTemplate; import org.springframework.http.HttpStatus; import org.springframework.http.ResponseEntity; import org.springframework.test.context.TestPropertySource; import org.springframework.test.context.junit4.SpringRunner; import static org.assertj.core.api.BDDAssertions.then; /** * Basic integration tests for service demo application. * * @author Dave Syer */ @RunWith(SpringRunner.class) @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT) @TestPropertySource(properties = {"management.port=0"}) public class HelloWorldApplicationTests { @org.springframework.boot.context.embedded.LocalServerPort private int port; @Value("${local.management.port}") private int mgt; @Autowired private TestRestTemplate testRestTemplate; @Test public void shouldReturn200WhenSendingRequestToController() throws Exception { @SuppressWarnings("rawtypes") ResponseEntity<Map> entity = this.testRestTemplate.getForEntity( "http://localhost:" + this.port + "/hello-world", Map.class); then(entity.getStatusCode()).isEqualTo(HttpStatus.OK); } @Test public void shouldReturn200WhenSendingRequestToManagementEndpoint() throws Exception { @SuppressWarnings("rawtypes") ResponseEntity<Map> entity = this.testRestTemplate.getForEntity( "http://localhost:" + this.mgt + "/actuator/info", Map.class); then(entity.getStatusCode()).isEqualTo(HttpStatus.OK); } }
