本文档为获取到代理IP后使用代理的代码样例，供开发者参考。
代码样例直接运行无法得到正确的结果，因为代码中的代理地址/端口和应用账号密码等信息都是虚构的，您替换成自己真实的就可以正常运行了。
如何获取代理地址/端口和设置代理授权？
请参考：接入指南 - 快速入门
使用前提：
1、 已经获取代理地址， 去获取 www.xiaoshitouip.com ：
2、 已经设置代理授权（用户名/密码或者IP白名单）。
package com.example
import okhttp3.*
import org.apache.http.HttpHost
import org.apache.http.auth.AuthScope
import org.apache.http.auth.UsernamePasswordCredentials
import org.apache.http.client.CredentialsProvider
import org.apache.http.client.methods.HttpGet
import org.apache.http.impl.client.BasicCredentialsProvider
import org.apache.http.impl.client.CloseableHttpClient
import org.apache.http.impl.client.HttpClients
import org.apache.http.util.EntityUtils
import java.io.IOException
import java.net.InetSocketAddress
import java.net.Proxy
import java.nio.charset.StandardCharsets
fun main(args: Array<String>) {
// 从 https://www.xiaoshitouip.com/ 领取后，替换自己的ip和端口
val ip = "代理ip" // 代理主机地址
val port = 代理端口 // 代理主机端口
// 替换为自己的用户名
// 到管理后台：https://admin.xiaoshitouip.com/proxy/proxy-auth 授权管理页面添加账号密码或者ip白名单
// 设置了ip白名单就不需要设置账号密码了
// 使用OKHttp库
OKHttpProxy.build(ip, port).test()
// OKHttpProxy.build(ip, port, "代理账号", "代理密码").test(); // 代理认证
// 使用HttpClient库
// HttpClientProxy.build(ip, port).test();
// HttpClientProxy.build(ip, port, "代理账号", "代理密码").test(); // 代理认证
}
/**
* OKHttp库使用代理
*/
internal class OKHttpProxy {
var proxyHost: String? = null
var proxyPort = 0
var proxyAccount: String? = null
var proxyPwd: String? = null
@Throws(IOException::class)
fun test() {
val targetUrl = "http://myip.ipip.net"
var client: OkHttpClient? = null
client = if (proxyAccount == null || proxyPwd == null) {
getHttpClient(proxyHost, proxyPort)
} else {
// 账号密码验证
getHttpClient(proxyHost, proxyPort, proxyAccount!!, proxyPwd!!)
}
val request: Request = Request.Builder()
.url(targetUrl)
.build()
val response: Response = client.newCall(request).execute()
println(response.body?.string())
}
companion object {
/**
* @param host 代理主机地址
* @param port 代理主机端口
*/
fun build(host: String?, port: Int): OKHttpProxy {
val proxy = OKHttpProxy()
proxy.proxyHost = host
proxy.proxyPort = port
return proxy
}
/**
* @param host 代理主机地址
* @param port 代理主机端口
* @param acc 代理认证账号
* @param pwd 代理认证口令
*/
fun build(host: String?, port: Int, acc: String?, pwd: String?): OKHttpProxy {
val proxy = OKHttpProxy()
proxy.proxyHost = host
proxy.proxyPort = port
proxy.proxyAccount = acc
proxy.proxyPwd = pwd
return proxy
}
/**
* 代理不需要账号密码认证的httpClient
*/
private fun getHttpClient(proxyHost: String?, proxyPort: Int): OkHttpClient {
val proxy = Proxy(Proxy.Type.HTTP,
InetSocketAddress(proxyHost, proxyPort))
return OkHttpClient.Builder()
.proxy(proxy)
.build()
}
/**
* 代理需要账号密码认证的httpClient
*/
private fun getHttpClient(proxyHost: String?,
proxyPort: Int, acc: String, pwd: String): OkHttpClient {
val proxy = Proxy(Proxy.Type.HTTP,
InetSocketAddress(proxyHost, proxyPort))
// 账号密码验证
val authenticator: Authenticator = Authenticator { _, response ->
val credential: String = Credentials.basic(acc, pwd)
response.request.newBuilder()
.header("Proxy-Authorization", credential).build()
}
return OkHttpClient.Builder()
.proxy(proxy)
.proxyAuthenticator(authenticator)
.build()
}
}
}
/**
* HttpClient库使用代理
*/
internal class HttpClientProxy {
var proxyHost: String? = null
var proxyPort = 0
var proxyAccount: String? = null
var proxyPwd: String? = null
@Throws(IOException::class)
fun test() {
val targetUrl = "http://myip.ipip.net"
var client: CloseableHttpClient? = null
client = if (proxyAccount == null || proxyPwd == null) {
getHttpClient(proxyHost, proxyPort)
} else {
// 账号密码验证
getHttpClient(proxyHost, proxyPort, proxyAccount!!, proxyPwd!!)
}
val httpGet = HttpGet(targetUrl)
val response = client.execute(httpGet)
val resultStr: String = EntityUtils.toString(response.entity,
StandardCharsets.UTF_8)
println(resultStr)
}
companion object {
/**
* @param host 代理主机地址
* @param port 代理主机端口
*/
fun build(host: String?, port: Int): HttpClientProxy {
val proxy = HttpClientProxy()
proxy.proxyHost = host
proxy.proxyPort = port
return proxy
}
/**
* @param host 代理主机地址
* @param port 代理主机端口
* @param acc 代理认证账号
* @param pwd 代理认证口令
*/
fun build(host: String?, port: Int, acc: String?, pwd: String?):
HttpClientProxy {
val proxy = HttpClientProxy()
proxy.proxyHost = host
proxy.proxyPort = port
proxy.proxyAccount = acc
proxy.proxyPwd = pwd
return proxy
}
/**
* 代理不需要账号密码认证的httpClient
*/
private fun getHttpClient(proxyHost: String?, proxyPort: Int):
CloseableHttpClient {
val proxy = HttpHost(proxyHost, proxyPort, "HTTP")
return HttpClients.custom()
.setProxy(proxy)
.build()
}
/**
* 代理需要账号密码认证的httpClient
*/
private fun getHttpClient(proxyHost: String?,
proxyPort: Int, acc: String, pwd: String): CloseableHttpClient {
val proxy = HttpHost(proxyHost, proxyPort, "HTTP")
val provider: CredentialsProvider = BasicCredentialsProvider()
provider.setCredentials(AuthScope(proxy),
UsernamePasswordCredentials(acc, pwd))
return HttpClients.custom()
.setProxy(proxy)
.setDefaultCredentialsProvider(provider)
.build()
}
}
}
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