搭建服务提供者

1、新建一个maven项目（test-springcloud-provider-payment8006）

结构如下：

2、引入依赖，编辑pom文件

1 <!-- spring-cloud 整合 consul -->
2 <dependency>
3     <groupId>org.springframework.cloud</groupId>
4     <artifactId>spring-cloud-starter-consul-discovery</artifactId>
5 </dependency>

完整pom.xml文件如下：

 1 <?xml version="1.0" encoding="UTF-8"?>2 <project xmlns="http://maven.apache.org/POM/4.0.0"3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"4          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">5     <parent>6         <artifactId>test-springcloud</artifactId>7         <groupId>com.test</groupId>8         <version>1.0-SNAPSHOT</version>9     </parent>
10     <modelVersion>4.0.0</modelVersion>
11 
12     <artifactId>test-springcloud-provider-payment8006</artifactId>
13 
14     <dependencies>
15 
16         <!-- spring-cloud 整合 consul -->
17         <dependency>
18             <groupId>org.springframework.cloud</groupId>
19             <artifactId>spring-cloud-starter-consul-discovery</artifactId>
20         </dependency>
21 
22         <!-- spring boot -->
23         <dependency>
24             <groupId>org.springframework.boot</groupId>
25             <artifactId>spring-boot-starter-web</artifactId>
26         </dependency>
27         <dependency>
28             <groupId>org.springframework.boot</groupId>
29             <artifactId>spring-boot-starter-actuator</artifactId>
30         </dependency>
31 
32         <dependency>
33             <groupId>org.springframework.boot</groupId>
34             <artifactId>spring-boot-devtools</artifactId>
35             <scope>runtime</scope>
36             <optional>true</optional>
37         </dependency>
38         <dependency>
39             <groupId>org.projectlombok</groupId>
40             <artifactId>lombok</artifactId>
41             <optional>true</optional>
42         </dependency>
43 
44         <dependency>
45             <groupId>org.springframework.boot</groupId>
46             <artifactId>spring-boot-starter-test</artifactId>
47             <scope>test</scope>
48         </dependency>
49 
50     </dependencies>
51 
52     <build>
53         <finalName>test-springcloud-provider-payment8006</finalName>
54     </build>
55 
56 </project>

pom.xml

3、编辑配置文件application.yml

 1 # 端口2 server:3   port: 80064 5 spring:6   application:7     name: cloud-payment-service8   cloud:9     consul:
10       host: localhost
11       port: 8500
12       discovery:
13         # hostname: 127.0.0.1
14         service-name: ${spring.application.name}

4、编写主启动类

1 @EnableDiscoveryClient
2 @SpringBootApplication
3 public class PaymentMain8006 {
4     public static void main(String[] args) {
5         SpringApplication.run(PaymentMain8006.class, args);
6     }
7 }

5、编写Controller

 1 @RestController2 @Slf4j3 public class PaymentController {4 5     @Value("${server.port}")6     private String serverPort;7 8     @RequestMapping(value = "payment/consul")9     public String paymentconsul(){
10         return "springcloud with consul：" + serverPort + "\t" + UUID.randomUUID();
11     }
12 }

6、启动项目，测试项目

1）启动Consul服务，使用开发模式，命令：consul agent -dev

2）启动项目（test-springcloud-provider-payment8006）

3）使用地址：http://localhost:8006/payment/consul

4）打开Consul的界面，地址：http://localhost:8500/

搭建服务消费者

1、新建一个maven项目（test-springcloud-order7998）

项目结构如下：

2、引入pom依赖，同上（与服务提供者依赖相同）

3、编辑application.yml文件

 1 # 端口2 server:3   port: 79984 5 spring:6   application:7     name: cloud-order8   cloud:9     consul:
10       host: localhost
11       port: 8500
12       discovery:
13         # hostname: 127.0.0.1
14         service-name: ${spring.application.name}

4、编辑启动类

1 @SpringBootApplication
2 public class OrderMain7998 {
3     public static void main(String[] args) {
4         SpringApplication.run(OrderMain7998.class, args);
5     }
6 }

5、编辑配置类，注入RestTemplate对象

 1 @Configuration2 public class AppConfig {3 4     /**5      * 注入restTemplate，请用请求rest接口6      * @return7      */8     @Bean9     // 标注此注解后，RestTemplate就具有了客户端负载均衡能力
10     // 负载均衡技术依赖于的是Ribbon组件~
11     // RestTemplate都塞入一个loadBalancerInterceptor 让其具备有负载均衡的能力
12     @LoadBalanced
13     public RestTemplate restTemplate(){
14         return new RestTemplate();
15     }
16 }

6、编辑Controller

 1 @RestController2 @Slf4j3 public class OrderController {4 5     public static final String PAYMENT_URL = "http://cloud-payment-service";6 7     @Autowired8     private RestTemplate restTemplate;9 
10     @GetMapping("/consumer/payment/consul")
11     public String paymentconsul(){
12         return restTemplate.getForObject(PAYMENT_URL + "/payment/consul", String.class);
13     }
14 
15 }

7、启动项目，测试

1）启动项目（test-springcloud-order7998）

2）使用地址：http://localhost:7998/consumer/payment/consul，进行访问