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openfeign整合完成

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YoVinchen
2023-08-15 17:48:38 +08:00
parent 28d1906cf1
commit fdbe9cbe62
8 changed files with 64 additions and 61 deletions
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14
borrow-service/pom.xml
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@@ -18,6 +18,15 @@
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
<version>2.2.10.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
@@ -30,11 +39,6 @@
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.example</groupId>
<artifactId>commons</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.example</groupId>
<artifactId>commons</artifactId>

3
borrow-service/src/main/java/com/test/BorrowApplication.java
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@@ -4,6 +4,7 @@ import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.openfeign.EnableFeignClients;
/**
* ClassName: BorrowApplication
@@ -13,7 +14,7 @@ import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
* @Create 2023/8/14 16:25
*/
@SpringBootApplication
@EnableEurekaClient
@EnableFeignClients
public class BorrowApplication {
public static void main(String[] args) {
SpringApplication.run(BorrowApplication.class, args);

25
borrow-service/src/main/java/com/test/config/BeanConfig.java
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@@ -1,25 +0,0 @@
package com.test.config;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.loadbalancer.annotation.LoadBalancerClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;
/**
* ClassName: BeanConfiguration
* Package: com.test.config
*
* @author yovinchen
* @Create 2023/8/15 10:08
*/
@Configuration
@LoadBalancerClient(value = "userservice", //指定为 userservice 服务，只要是调用此服务都会使用我们指定的策略
configuration = LoadBalancerConfig.class) //指定我们刚刚定义好的配置类
public class BeanConfig {
@Bean
@LoadBalanced
RestTemplate template() {
return new RestTemplate();
}
}

25
borrow-service/src/main/java/com/test/config/LoadBalancerConfig.java
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@@ -1,25 +0,0 @@
package com.test.config;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.loadbalancer.core.RandomLoadBalancer;
import org.springframework.cloud.loadbalancer.core.ReactorLoadBalancer;
import org.springframework.cloud.loadbalancer.core.ServiceInstanceListSupplier;
import org.springframework.cloud.loadbalancer.support.LoadBalancerClientFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.core.env.Environment;
/**
* ClassName: LoadBalancerConfig
* Package: com.test.config
*
* @author yovinchen
* @Create 2023/8/15 16:46
*/
public class LoadBalancerConfig {
//将官方提供的 RandomLoadBalancer 注册为Bean
@Bean
public ReactorLoadBalancer<ServiceInstance> randomLoadBalancer(Environment environment, LoadBalancerClientFactory loadBalancerClientFactory){
String name = environment.getProperty(LoadBalancerClientFactory.PROPERTY_NAME);
return new RandomLoadBalancer(loadBalancerClientFactory.getLazyProvider(name, ServiceInstanceListSupplier.class), name);
}
}

19
borrow-service/src/main/java/com/test/service/client/BookClient.java Normal file
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@@ -0,0 +1,19 @@
package com.test.service.client;
import com.test.entity.Book;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
/**
* ClassName: VookClient
* Package: com.test.service.client
*
* @author yovinchen
* @Create 2023/8/15 16:56
*/
@FeignClient("bookservice")
public interface BookClient {
@RequestMapping("/book/{bid}")
Book findBookById(@PathVariable("bid") int bid);
}

22
borrow-service/src/main/java/com/test/service/client/UserClient.java Normal file
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@@ -0,0 +1,22 @@
package com.test.service.client;
import com.test.entity.User;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
/**
* ClassName: UserClient
* Package: com.test.service.client
*
* @author yovinchen
* @Create 2023/8/15 16:54
*/
@FeignClient("userservice")
//声明为userservice服务的HTTP请求客户端
public interface UserClient {
//路径保证和其他微服务提供的一致即可
@RequestMapping("/user/{uid}")
User getUserById(@PathVariable("uid") int uid); //参数和返回值也保持一致
}

16
borrow-service/src/main/java/com/test/service/impl/BorrowServiceImpl.java
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@@ -7,6 +7,8 @@ import com.test.entity.User;
import com.test.entity.UserBorrowDetail;
import com.test.mapper.BorrowMapper;
import com.test.service.BorrowService;
import com.test.service.client.BookClient;
import com.test.service.client.UserClient;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;
@@ -28,16 +30,20 @@ public class BorrowServiceImpl implements BorrowService {
BorrowMapper mapper;
@Resource
RestTemplate template;
UserClient userClient;
@Resource
BookClient bookClient;
@Override
public UserBorrowDetail getUserBorrowDetailByUid(int uid) {
List<Borrow> borrow = mapper.getBorrowsByUid(uid);
//这里不用再写IP，直接写服务名称userservice
User user = template.getForObject("http://userservice/user/" + uid, User.class);
//这里不用再写IP，直接写服务名称bookservice
List<Book> bookList = borrow.stream().map(b -> template.getForObject("http://bookservice/book/" + b.getBid(), Book.class)).collect(Collectors.toList());
User user = userClient.getUserById(uid);
List<Book> bookList = borrow
.stream()
.map(b -> bookClient.findBookById(b.getBid()))
.collect(Collectors.toList());
return new UserBorrowDetail(user, bookList);
}
}

1
user-service/src/main/java/com/test/controller/UserController.java
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@@ -25,6 +25,7 @@ public class UserController {
//这里以RESTFul风格为例
@RequestMapping("/user/{uid}")
public User findUserById(@PathVariable("uid") int uid) {
System.out.println("我被调用了！！！");
return service.getUserById(uid);
}
}