SpingCloud新建Nacos模块无法获取配置文件

Question

SpingCloud新建Nacos模块无法获取配置文件

IdatageWebApplication.java

package com.springcloud.cad;

import org.springframework.boot.SpringApplication;
import org.springframework.cloud.client.SpringCloudApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

@EnableDiscoveryClient
@SpringCloudApplication
public class IdatageWebApplication {
    public static void main(String[] args) {
        System.out.println("IdatageGatewayApplication");
        SpringApplication.run(IdatageWebApplication.class, args);
    }
}

TestController.java

package com.springcloud.cad.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

@RequestMapping("/nacos")
@RestController
public class TestController {
    @Value("${server.port}")
    private String port;

    @Value("${spring.application.name}")
    private String name;

    @Autowired
    private DiscoveryClient discoveryClient;

    @RequestMapping("/info")
    public String getInfo() {
        return name + "-" + port;
    }

    @GetMapping("/discovery")
    public Map<String, List<ServiceInstance>> discovery() {
        // 获取服务名列表
        List<String> servicesList = discoveryClient.getServices();

        // 根据服务名 获取 每个服务名下的 各个服务的信息
        Map<String, List<ServiceInstance>> map = new HashMap<>();
        servicesList.stream().forEach(service -> {
            map.put(service, discoveryClient.getInstances(service));
        });

        return map;
    }
}

Answer 1

问题具体表现是什么或者报什么错，是port取到的值为${server.port}，还是说port的值是null。如果取到的值是${server.port}这种，可能是程序识别不到配置文件。可以把application.yml文件重命名为application.properties，还不行的话可以在启动类上加这个注解试试：@PropertySource({"classpath:application.properties"})。