模拟登陆手机版新浪微博

来源：互联网发布：手机学编程的软件编辑：程序博客网时间：2024/04/29 03:23

分析登陆步骤（http://login.weibo.cn）

点击登录
登陆界面
注意：登陆链接不是http://login.weibo.cn，而是http://login.weibo.cn/login/?ns=1&revalid=2&backURL=http%3A%2F%2Fweibo.cn%2F&backTitle=%CE%A2%B2%A9&vt=，观察发现该链接为固定链接

观察登陆所需参数（采用Firefox firebug）
请求体信息
发现字段backURL,password_****,vk为变化字段，需要获取

请求头信息
发现Cookie字段，需要获取

字段获取
这里写图片描述
登陆界面源码可以获取相关字段
登陆界面响应头信息获取cookie

登陆之后再次跳转
这里写图片描述
获取cookie和location(跳转链接)

完整代码

import java.util.ArrayList;import java.util.List;import org.apache.http.Header;import org.apache.http.HttpEntity;import org.apache.http.NameValuePair;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.CloseableHttpResponse;import org.apache.http.client.methods.HttpGet;import org.apache.http.client.methods.HttpPost;import org.apache.http.client.protocol.HttpClientContext;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.HttpClients;import org.apache.http.message.BasicNameValuePair;import org.apache.http.util.EntityUtils;import org.jsoup.Jsoup;import org.jsoup.nodes.Document;import org.jsoup.nodes.Element;public class SinaCrawler {    public static void main(String[] args){        CloseableHttpClient client = HttpClients.createDefault();        CloseableHttpResponse response = null;        try{            //访问http://login.weibo.cn会跳转，直接访问点击登录按钮后的链接            HttpGet get = new HttpGet("http://login.weibo.cn/login/?ns=1&revalid=2&backURL=http%3A%2F%2Fweibo.cn%2F&backTitle=%CE%A2%B2%A9&vt=");            response = client.execute(get);            String cookie = null;            for(Header header:response.getHeaders("Set-Cookie")){                 cookie = header.toString().split(":")[1].trim();            }System.out.println(cookie);            HttpEntity entity = response.getEntity();            String html = EntityUtils.toString(entity);              //获取网页源码            EntityUtils.consume(entity);            //采用jsoup解析，获取password_字段，backURL字段，vk字段            Document doc = Jsoup.parse(html);            Element form = (Element) doc.select("form").first();             String action = form.attr("action");System.out.println(action);            Document formDoc = Jsoup.parse(form.html());            //获取backURL            Element a = formDoc.select("input[name=backURL]").first();             String backURL = a.attr("value");//System.out.println(backURL);            //获取password_            Element passwordE = formDoc.select("input[type=password]").first();            String password = passwordE.attr("name");//System.out.println(password);            //获取vk            Element vkE = formDoc.select("input[name=vk]").first();            String vk = vkE.attr("value");//System.out.println(vk);            HttpPost post = new HttpPost("http://login.weibo.cn/login/"+action);System.out.println("http://login.weibo.cn/login/"+action);                      post.setHeader("User-Agent","Mozilla/5.0 (Windows NT 6.1; rv:39.0) Gecko/20100101 Firefox/39.0");            post.setHeader("Referer", "http://login.weibo.cn/login/?ns=1&revalid=2&backURL=http%3A%2F%2Fweibo.cn%2F&backTitle=%CE%A2%B2%A9&vt");            post.setHeader("Host", "login.weibo.cn");            post.setHeader("Cookie", cookie);            List<NameValuePair> nvps = new ArrayList<NameValuePair>();              nvps.add(new BasicNameValuePair("backTitle", "微博"));              nvps.add(new BasicNameValuePair("backURL", backURL));              nvps.add(new BasicNameValuePair("mobile", "*****"));              nvps.add(new BasicNameValuePair(password, "*****"));              nvps.add(new BasicNameValuePair("remember", "on"));            nvps.add(new BasicNameValuePair("submit", "登录"));            nvps.add(new BasicNameValuePair("tryCount", ""));            nvps.add(new BasicNameValuePair("vk", vk));            if (nvps != null) {                  post.setEntity(new UrlEncodedFormEntity(nvps, "UTF-8"));              }              response = client.execute(post);              StringBuffer cookieLogin = new StringBuffer();            for(Header header:response.getHeaders("Set-Cookie")){//System.out.println(header);                cookieLogin.append(header.toString().split(":")[1]);            }            for(Header header:response.getHeaders("Set-Cookie")){//System.out.println(header);                cookieLogin.append(header.toString().split(":")[1]);            }System.out.println(cookieLogin.toString());            String location = null;             for(Header header:response.getHeaders("Location")){                location = header.toString().split(": ")[1];            }System.out.println(location);            HttpGet get3 = new HttpGet(location);            get3.setHeader("Cookie",cookieLogin.toString());            response = client.execute(get3);            HttpEntity entity2 = response.getEntity();  System.out.println("contentLength:"+entity2.getContentLength());                        String content = EntityUtils.toString(entity2);  System.out.println("content:"+content);                 }catch(Exception e){            e.printStackTrace();        }finally{            if(response!=null){                try{                    response.close();                }catch(Exception e){                    e.printStackTrace();                }            }        }    }}

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