1.爬虫开发准备
开发工具：Eclipse/IDEA
浏览器：Google Chrome
浏览器Selement驱动：Selenium 3.5
Jar包：
// Selenium驱动版本需要和Chrome浏览器版本对应，
// 下载地址http://chromedriver.storage.googleapis.com/index.html
//如果Selenium出现报错请看这篇文章：https://blog.csdn.net/qq_33259323/article/details/106445163
2.流程
- 获取Cookie(终端输入或者使用Selenium打开扫码登录)
- 请求https://api.bilibili.com/x/relation/followers接口
- 解析数据
- 存入csv
3.编码
package com.mm.rep;
import java.io.IOException;
import java.nio.charset.Charset;
import java.util.List;
import java.util.Scanner;
import java.util.Set;
import org.openqa.selenium.Cookie;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.URI;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.params.HttpMethodParams;
import org.apache.log4j.BasicConfigurator;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.csvreader.CsvWriter;
import org.apache.commons.lang3.StringUtils;
public class Main {
private static final Logger logger = LogManager.getLogger(Main.class);
private static WebDriver driver = null;
private static GetMethod getMethod = null;
private static Set<Cookie> bcookies = null;
private final static String BLOGINURL = "https://passport.bilibili.com/login";
private final static String BMAINPAGE = "https://www.bilibili.com/";
Main(){
BasicConfigurator.configure();
// 初始化GetMethod,设置不变的RequestHeader
getMethod = new GetMethod();
getMethod.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET, "UTF-8");
getMethod.addRequestHeader(":authority", "api.bilibili.com");
getMethod.addRequestHeader(":method", "api.bilibili.com");
getMethod.addRequestHeader(":scheme", "GET");
getMethod.addRequestHeader(":scheme", "https");
getMethod.addRequestHeader("accept", "*/*");
getMethod.addRequestHeader(":scheme", "https");
getMethod.addRequestHeader("accept-language", "zh-CN,zh;q=0.9");
getMethod.addRequestHeader("sec-fetch-dest", "script");
getMethod.addRequestHeader("sec-fetch-mode", "no-cors");
getMethod.addRequestHeader("sec-fetch-site", "same-site");
getMethod.addRequestHeader("user-agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36");
}
public static String getCookie() throws InterruptedException {
String scCookie = null;
Scanner ip = new Scanner(System.in);
logger.info("请输入Cookie,如果没有请按回车:");
scCookie = ip.nextLine();
if(scCookie.length() != 0) {
return scCookie;
}
logger.info("开始扫码登录");
// 设置驱动地址
System.setProperty("webdriver.chrome.driver", "H:/chromedriver/chromedriver.exe");
// 启动设置
ChromeOptions options = new ChromeOptions();
// 创建ChromeDriver
driver = new ChromeDriver(options);
// 打开Bilibili登录页面
driver.get(BLOGINURL);
// 等待扫码登录
while(true) {
if(driver.getCurrentUrl().equals(BMAINPAGE)) {
break;
}else {
Thread.sleep(100);
}
}
logger.info("扫码登录成功");
//获取cookie
bcookies = driver.manage().getCookies();
String cookie = StringUtils.join(bcookies, "; ");
return cookie;
}
public static List<JSONObject> getFanS(String cookie,String vmid,int pn,int ps) throws InterruptedException, HttpException, IOException {
HttpClient client = new HttpClient();
// 拼接url
StringBuffer sBuffer = new StringBuffer();
sBuffer.append("https://api.bilibili.com/x/relation/followers?vmid=");
sBuffer.append(vmid);
sBuffer.append("&pn=");
sBuffer.append(pn);
sBuffer.append("&ps=");
sBuffer.append(ps);
sBuffer.append("&order=desc&jsonp=jsonp");
getMethod.setURI(new URI(sBuffer.toString(), true));
getMethod.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET, "UTF-8");
// 设置请求头
getMethod.addRequestHeader("cookie", cookie);
// 发送请求
client.executeMethod(getMethod);
// 获取数据
String info = new String(getMethod.getResponseBody(), "UTF-8");
JSONObject fans = JSONObject.parseObject(info).getJSONObject("data");
JSONArray fArray = JSONArray.parseArray(fans.getString("list"));
return JSON.parseArray(fArray.toJSONString(), JSONObject.class);
}
public static void main(String[] args) throws InterruptedException, HttpException{
logger.info("程序开始...");
new Main();
// 获取Cookie
String cookie = Main.getCookie();
CsvWriter csvWriter = new CsvWriter("C:\\Users\\computer\\Desktop\\aaa.csv", ',', Charset.forName("UTF-8"));
String[] csvHeaders = { "mid", "粉丝名字","粉丝签名","粉丝头像"};
try {
csvWriter.writeRecord(csvHeaders);
int pn = 1;
boolean end = false;
while(true) {
for (JSONObject f : Main.getFanS(cookie, "309103931", pn, 20)) {
if(f == null) {
end = true;
break;
}
String[] csvContent1 = {f.getString("mid"), f.getString("uname"),f.getString("sign"),f.getString("face")};
System.out.println(csvContent1);
csvWriter.writeRecord(csvContent1);
}
pn++;
Thread.sleep(100);
if(end == true) {
break;
}
}
} catch (IOException e) {
System.out.println(e);
e.printStackTrace();
}
csvWriter.close();
driver.close();
logger.info("程序结束");
}
}
4.缺点
容易被拦截，最多获取不到1000个
