仅仅使用了一个java文件，运行main方法即可，需要依赖的jar包是com.alibaba.fastjson（版本1.2.28）和jsoup（版本1.10.2）
如果用了pom，那么就是以下两个：
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<dependency>
<groupid>com.alibaba</groupid>
<artifactid>fastjson</artifactid>
<version>1.2.28</version>
</dependency>
<dependency>
<groupid>org.jsoup</groupid>
<artifactid>jsoup</artifactid>
<version>1.10.2</version>
</dependency>
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完整的代码如下：
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package com.tuniu.fcm.facade.ipproxy;
import com.alibaba.fastjson.jsonobject;
import org.jsoup.jsoup;
import org.jsoup.nodes.document;
import java.util.arraylist;
import java.util.hashmap;
import java.util.list;
import java.util.map;
import java.util.regex.matcher;
import java.util.regex.pattern;
/**
* 获取代理ip，需要
* com.alibaba.fastjson.jsonobject以及jsoup
*/
public class proxycralwerunusedvpn {
threadlocal<integer> localwantednumber = new threadlocal<integer>();
threadlocal<list<proxyinfo>> localproxyinfos = new threadlocal<list<proxyinfo>>();
public static void main(string[] args) {
proxycralwerunusedvpn proxycrawler = new proxycralwerunusedvpn();
/**
* 想要获取的代理ip个数，由需求方自行指定。（如果个数太多，将导致返回变慢）
*/
proxycrawler.startcrawler(1);
}
/**
* 暴露给外部模块调用的入口
* @param wantednumber 调用方期望获取到的代理ip个数
*/
public string startcrawler(int wantednumber) {
localwantednumber.set(wantednumber);
kuaidailicom("http://www.xicidaili.com/nn/", 15);
kuaidailicom("http://www.xicidaili.com/nt/", 15);
kuaidailicom("http://www.xicidaili.com/wt/", 15);
kuaidailicom("http://www.kuaidaili.com/free/inha/", 15);
kuaidailicom("http://www.kuaidaili.com/free/intr/", 15);
kuaidailicom("http://www.kuaidaili.com/free/outtr/", 15);
/**
* 构造返回数据
*/
proxyresponse response = new proxyresponse();
response.setsuccess("true");
map<string, object> datainfomap = new hashmap<string, object>();
datainfomap.put("numfound", localproxyinfos.get().size());
datainfomap.put("pagenum", 1);
datainfomap.put("proxy", localproxyinfos.get());
response.setdata(datainfomap);
string responsestring = jsonobject.tojson(response).tostring();
system.out.println(responsestring);
return responsestring;
}
private void kuaidailicom(string baseurl, int totalpage) {
string ipreg = "\\\\d{1,3}\\\\.\\\\d{1,3}\\\\.\\\\d{1,3}\\\\.\\\\d{1,3} \\\\d{1,6}";
pattern ipptn = pattern.compile(ipreg);
for (int i = 1; i < totalpage; i++) {
if (getcurrentproxynumber() >= localwantednumber.get()) {
return;
}
try {
document doc = jsoup.connect(baseurl + i + "/")
.header("accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8")
.header("accept-encoding", "gzip, deflate, sdch")
.header("accept-language", "zh-cn,zh;q=0.8,en;q=0.6")
.header("cache-control", "max-age=0")
.header("user-agent", "mozilla/5.0 (macintosh; intel mac os x 10_11_4) applewebkit/537.36 (khtml, like gecko) chrome/51.0.2704.103 safari/537.36")
.header("cookie", "hm_lvt_7ed65b1cc4b810e9fd37959c9bb51b31=1462812244; _gat=1; _ga=ga1.2.1061361785.1462812244")
.header("host", "www.kuaidaili.com")
.header("referer", "http://www.kuaidaili.com/free/outha/")
.timeout(30 * 1000)
.get();
matcher m = ipptn.matcher(doc.text());
while (m.find()) {
if (getcurrentproxynumber() >= localwantednumber.get()) {
break;
}
string[] strs = m.group().split(" ");
if (checkproxy(strs[0], integer.parseint(strs[1]))) {
system.out.println("获取到可用代理ip\\t" + strs[0] + "\\t" + strs[1]);
addproxy(strs[0], strs[1], "http");
}
}
} catch (exception e) {
e.printstacktrace();
}
}
}
private static boolean checkproxy(string ip, integer port) {
try {
//http://1212.ip138.com/ic.asp 可以换成任何比较快的网页
jsoup.connect("http://1212.ip138.com/ic.asp")
.timeout(2 * 1000)
.proxy(ip, port)
.get();
return true;
} catch (exception e) {
return false;
}
}
private int getcurrentproxynumber() {
list<proxyinfo> proxyinfos = localproxyinfos.get();
if (proxyinfos == null) {
proxyinfos = new arraylist<proxyinfo>();
localproxyinfos.set(proxyinfos);
return 0;
}
else {
return proxyinfos.size();
}
}
private void addproxy(string ip, string port, string protocol){
list<proxyinfo> proxyinfos = localproxyinfos.get();
if (proxyinfos == null) {
proxyinfos = new arraylist<proxyinfo>();
proxyinfos.add(new proxyinfo(ip, port, protocol));
}
else {
proxyinfos.add(new proxyinfo(ip, port, protocol));
}
}
}
class proxyinfo {
private string username = "";
private string ip;
private string password = "";
private string type;
private string port;
private int is_internet = 1;
public proxyinfo(string ip, string port, string type) {
this.ip = ip;
this.type = type;
this.port = port;
}
public string getusername() {
return username;
}
public void setusername(string username) {
this.username = username;
}
public string getip() {
return ip;
}
public void setip(string ip) {
this.ip = ip;
}
public string getpassword() {
return password;
}
public void setpassword(string password) {
this.password = password;
}
public string gettype() {
return type;
}
public void settype(string type) {
this.type = type;
}
public string getport() {
return port;
}
public void setport(string port) {
this.port = port;
}
public int getis_internet() {
return is_internet;
}
public void setis_internet(int is_internet) {
this.is_internet = is_internet;
}
}
class proxyresponse {
private string success;
private map<string, object> data;
public string getsuccess() {
return success;
}
public void setsuccess(string success) {
this.success = success;
}
public map<string, object> getdata() {
return data;
}
public void setdata(map<string, object> data) {
this.data = data;
}
}
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以上这篇java代理实现爬取代理ip的示例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持快网idc。
原文链接：https://blog.csdn.net/sdfiiiiii/article/details/70432060
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