首先，我们之前曾经用过很多服务间调用的方式和方法，今天给大家介绍一款SpringBoot3x版本服务间调用，采用@HttpExchange注解实现，方便快捷，简单易懂。

        创建个SpringBoot3x项目

        设置端口号为8081

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @Author xiarg
 * @CreateTime 2023/02/01  11:10
 */
@RestController
public class TestController {

    @GetMapping("/server/test")
    public String test(String name) {
        System.out.println(name);
        return "test :  " + name;
    }

}

         另外在创建个SpringBoot3x项目，依赖如下

         端口默认8080，代码结构如下：

         WebConfig如下，可以看到我们创建了一个web客户端，ToDoService代理客户端发送http请求

import com.genius.springboot3web.service.ToDoService;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.reactive.function.client.WebClient;
import org.springframework.web.reactive.function.client.support.WebClientAdapter;
import org.springframework.web.service.invoker.HttpServiceProxyFactory;

/**
 * @Author xiarg
 * @CreateTime 2023/02/01  14:06
 */
@Configuration
public class WebConfig {

    @Bean
    WebClient webClient() {
        return WebClient.builder()
                .baseUrl("http://localhost:8081")
                .build();
    }
    @Bean
    ToDoService toDoService() {
        HttpServiceProxyFactory httpServiceProxyFactory =
                HttpServiceProxyFactory.builder(WebClientAdapter.forClient(webClient()))
                        .build();
        return httpServiceProxyFactory.createClient(ToDoService.class);
    }

}

        ToDoService接口

import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.service.annotation.GetExchange;
import org.springframework.web.service.annotation.HttpExchange;

/**
 *
 * 服务间调用
 * @Author xiarg
 * @CreateTime 2023/02/01  14:10
 */
@HttpExchange("/server")
public interface ToDoService {
    /**
     * 测试
     * @param name
     * @return
     */
    @GetExchange("/test")
    String test(@RequestParam String name);

}

        测试Controller

/**
 * @Author xiarg
 * @CreateTime 2023/02/01  11:10
 */
@RestController
public class TestController {

    @Autowired
    private ToDoService toDoService;

    @GetMapping("/test")
    public String test(){
        String test = toDoService.test("test1");
        System.out.println(test);
        return "name : "+test;
    }

}

        此时启动两个服务，调用http://localhost:8080/test接口，此时，8080的服务就会去调用8081的服务，返回结果如下：

         这样就调用成功了。