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工具：IntelliJ IDEA 2019.2.4
JDK：1.8
父项目以及注册中心、服务方详见之前博客。
【消费方与之前服务方步骤一致，以下文章步骤基本一致】
补充：服务之间调用：ribbon 、 feign。那为什么选择feign呢？
feign其实封装了ribbon,也就是说，ribbon的配置feign也生效。
其次，feign的使用，是接口更加规范。代码会更加统一。
第一步：新建消费方 springcloud-consumer
1、打开父项目，file->new module
2、选择spring Initialize ->next
3、填写项目信息、next
4、dependencies 选择Srping Cloud Routing->OpenFeign 选择springboot版本。next,finish.
5、pom.xm 文件修改
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.cloud</groupId>
<artifactId>springcloud_demo</artifactId>
<version>1.0-SNAPSHOT</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.cloud</groupId>
<artifactId>cloud_client</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>cloud_client</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Hoxton.SR8</spring-cloud.version>
</properties>
<dependencies>
<!--web依赖-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
6、修改application配置文件，本人习惯yml配置.
注意：name 最好不要用下划线_ ,否则feign之间调用会报错。
server:
port: 8091
spring:
application:
name: cloud-consumer
eureka:
client:
service-url:
defaultZone: http://user:123456@localhost:8080/eureka/ #服务注册中信地址，含有BASIC认证的用户名和密码
instance:
prefer-ip-address: true #将IP注册到服务注册中心
7、写一个测试类controller
@RestController
public class UserController {
@Autowired
UserFeignClient userFeignClient;
@RequestMapping(value = "/consumerHello",method = RequestMethod.GET)
public String consumerTest(){
return userFeignClient.sayHi();
}
}
8、写一个测试Client,并通过FeignClient方式调用provider服务
注意：最好不要用GetMapping,否则有可能报404
@FeignClient(name = "cloud-provider")
public interface UserFeignClient {
@RequestMapping(value = "/sayHi" ,method = RequestMethod.GET)
public String sayHi();
}
9、修改启动文件，CloudProviderApplication .java， 启动项目
注意：确保provider服务端已经正常启动。
provider项目详见上一篇
@EnableFeignClients
@EnableDiscoveryClient
@SpringBootApplication
public class CloudConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(CloudConsumerApplication.class, args);
}
}
9、访问测试接口
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