org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.web.client.ResourceAccessException: I/O error on GET request for "http://DEPT-8001/dept/get/1": DEPT-8001; nested exception is java.net.UnknownHostException: DEPT-8001

 

不识别主机名称、则可能是主机名称没在系统文件hosts中配置，但检查发现，已经配置，排除。

于是查了一下Ribbon的用法，发现使用Ribbon的时候，必须要在RestTemplate bean配置中添加负载均衡注解@LoadBalanced

于是加完如下：

package com.zemel.consumer.config;

import java.nio.charset.Charset;

import java.util.Base64;

import org.springframework.cloud.client.loadbalancer.LoadBalanced;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.http.HttpHeaders;

import org.springframework.web.client.RestTemplate;

@Configuration

public class RestConfig {

@Bean

public HttpHeaders getHeaders(){

// 进行一个Http头信息配置

HttpHeaders headers = new HttpHeaders();

String auth = "wendy:wendy";

byte[] encodedAuth = Base64.getEncoder().encode(auth.getBytes(Charset.forName("US-ASCII")));

// 加密字符串要有空格

String authHeader = "Basic " + new String(encodedAuth);

headers.set("Authorization", authHeader);

return headers;

}

@Bean

@LoadBalanced

public RestTemplate getRestTemplate(){

return new RestTemplate();

}

}