使用feign配置网络ip代理

2022-11-13 11:11:36 配置 网络 代理

feign配置网络ip代理

问题描述

测试环境将需要访问的外网地址加入了白名单,但是Docker和宿主机网络不一样(试过挂载宿主机网络也不行,但是挂载宿主机网络会打乱原有的网络环境),所以造成了在宿主机上面可以访问该地址,但是docker里面是访问不到外网的地址,所使用feign的时候加上ip代理,代理宿主机ip来对外网地址进行访问!

为什么不直接对docker设置网络代理,测试环境里面基本都是内部服务调用,如果设置则会导致其网络不一致,并且开发测试正式环境较为复杂,如果不需要的时候直接在配置文件配置为null就行

1.依赖

<dependency>
    <groupId>org.apache.Httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.10</version>
</dependency>
<dependency>
     <groupId>io.GitHub.openfeign</groupId>
      <artifactId>feign-okhttp</artifactId>
</dependency>
//可能还需要feign相关依赖 feign-okhttp主要用来做网络代理,依赖需要自行百度

2.feignclinet接口

import io.swagger.annotations.apiOperation;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.http.MediaType;
import org.springframework.WEB.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import java.util.List;

@FeignClient(url = "http://xxx.xxx.xxx.xxx:8090" ,name = "slmodel-one")
public interface SlModelOneClient {
    @ApiOperation("XXXXXXX")
    @RequestMapping(
            method = RequestMethod.GET,
            value = "/efdcserver/efdcserver/getEfdcCodeByProjectName",
            consumes = "application/JSON;charset=UTF-8",
            produces = MediaType.APPLICATION_jsON_UTF8_VALUE)
    List<JsonAreaCode> getEfdcCodeByProjectName(
            @RequestParam("projectName") String projectName);
    @ApiOperation("XXXXXXX")
    @RequestMapping(
            method = RequestMethod.POST,
            value = "/efdcserver/hydro/getDepthMapByPost?efdcCode={efdcCode}&planName={planName}",
            consumes = "application/json;charset=UTF-8",
            produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
    DepthMap getDepthMapByPost(
            @PathVariable(name="efdcCode") String efdcCode,
            @PathVariable(name ="planName")String planName);
    @ApiOperation("XXXXXXX")
    @RequestMapping(
            method = RequestMethod.GET,
            value = "/efdcserver/hydro/getPoint?planName={planName}&efdcCode={efdcCode}&lgtd={lgtd}&lttd={lttd}",
            consumes = "application/json;charset=UTF-8",
            produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
    DepthMap getPointDepthByGet(
            @PathVariable(name ="planName")String planName,
            @PathVariable(name="efdcCode") String efdcCode ,
            @PathVariable(name ="lotd")Double lgtd,
            @PathVariable(name ="lttd")Double lttd);
}

3.Config

import okhttp3.*;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.commons.httpclient.DefaultOkHttpClientFactory;
import org.springframework.cloud.commons.httpclient.OkHttpClientFactory;
import org.springframework.cloud.openfeign.EnableFeignClients;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.io.IOException;
import java.net.*;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Set;

@Configuration
@EnableFeignClients(basePackages = "com.ceshi..map.client")
public class Config {
    @Value("${proxy.host}")
    private String proxyHost;
    @Value("${proxy.port}")
    private Integer proxyPort;
    @Value("#{'${proxy.domains}'.split(',')}")
    private Set<String> domainList;
    @Bean
    public OkHttpClientFactory okHttpClientFactory(OkHttpClient.Builder builder) {
        return new ProxyOkHttpClientFactory(builder);
    }
    class ProxyOkHttpClientFactory extends DefaultOkHttpClientFactory {
        public ProxyOkHttpClientFactory(OkHttpClient.Builder builder) {
            super(builder);
            //如果配置文件中的代理信息为null 则该代理ip配置不生效
            if(proxyHost!=null&&proxyPort!=null&&domainList!=null) {
                Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(proxyHost, proxyPort));
                List<Proxy> proxyList = new ArrayList<>(1);
                proxyList.add(proxy);
                builder.proxySelector(new ProxySelector() {
                    @Override
                    public List<Proxy> select(URI uri) {
                        if (uri == null || !domainList.contains(uri.getHost())) {
                            return Collections.singletonList(Proxy.NO_PROXY);
                        }
                        return proxyList;
                    }
                    @Override
                    public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
                    }
                });
            }
        }
    }
}

4.yml

使用IP代理

feign:
 okhttp:
  enabled: true
proxy:
 host: 199.168.233.32 //需要代理的ip
 port: 4444
 domains: 222.222.231.116,222.222.231.117 //需要访问的地址 host 如果多个 用逗号分割

不使用IP代理

feign:
 okhttp:
  enabled: true
proxy:
 host: null
 port: null
 domains: null

调用指定ip的feign接口

@FeignClient(value = “center-educational-server”,url=“http://127.0.0.1:10005”)

以上为个人经验,希望能给大家一个参考,也希望大家多多支持。

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