java HttpClient+Jsoup打造灌水利器再也不怕起火了

浏览数：18 / 时间：2015年06月09日

不知道多久以前就有过写个自动回帖的小软件一直没有实现，最近闲下来了遂研究了下，本人小菜对于HTTP协议一知半解只能在请教google大神了，把我的想法跟google大神说了之后，google大神说这小子不错，这是为防火事业做贡献啊！特赐予小弟以下神器：

1、HttpClient 4.3.1 (GA)

以下列出的是 HttpClient 提供的主要的功能，要知道更多详细的功能可以参见 HttpClient 的主页。

实现了所有 HTTP 的方法（GET,POST,PUT,HEAD 等）
支持自动转向
支持 HTTPS 协议
支持代理服务器等

2、Jsoup

jsoup 的主要功能如下

从一个 URL，文件或字符串中解析 HTML
使用 DOM 或 CSS 选择器来查找、取出数据
可操作 HTML 元素、属性、文本
使用与jquery几乎一样的语法

废话不多说直接进入正题，在HTTPClient源码包内包含example文件夹此文件夹内包含一些基本用法这些例子入门足够了找到ClientFormLogin.java具体解释注释已经很清楚了大致意思就是模拟HTTP请求存储cookies。

测试网站：http://bbs.dakele.com/

因为此网站对登录做了特殊处理所以与标准的DZ论坛可能会有些出入请自行修改

对网站的分析使用的chrome自带的审查元素，这个折腾了不少时间

登录地址：http://passport.dakele.com/login.do?product=bbs

输入错误的用户名和密码会发现实际登录地址为http://passport.dakele.com/logon.do 注意【i/n的区别刚开始没注意以为见鬼了】

返回错误信息

{"err_msg":"帐号或密码错误"}

输入正确信息返回

{"result":true,"redirect":http://bbs.dakele.com/member.php?mod=logging&action=login&loginsubmit=yes&infloat=yes&lssubmit=yes&inajax=0&fastloginfield=username&quickforward=yes&handlekey=ls&cookietime=2592000&remember=0&username=youname&AccessKey=[]}

直接输入rediret连接和正常登录

获取跳转链接：

private LoginResult getRedirectUrl(){
        LoginResult loginResult = null;
        CloseableHttpClient httpClient = HttpClients.createDefault();
        HttpPost httpost = new HttpPost(LOGINURL);
        httpost.setHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
        httpost.setHeader("Accept-Language", "zh-CN,zh;q=0.8");
        httpost.setHeader("Cache-Control", "max-age=0");
        httpost.setHeader("Connection", "keep-alive");
        httpost.setHeader("Host", "passport.dakele.com");
        httpost.setHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36");
        List <NameValuePair> nvps = new ArrayList <NameValuePair>();
        nvps.add(new BasicNameValuePair("product", "bbs"));
        nvps.add(new BasicNameValuePair("surl", "http://bbs.dakele.com/"));
        nvps.add(new BasicNameValuePair("username", "yourname"));//用户名
        nvps.add(new BasicNameValuePair("password", "yourpass"));//密码
        nvps.add(new BasicNameValuePair("remember", "0"));

        httpost.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8));
        CloseableHttpResponse response2 = null;
        try {
            response2 = httpClient.execute(httpost);
            if(response2.getStatusLine().getStatusCode()==200){
                HttpEntity entity = response2.getEntity();
                String entityString = EntityUtils.toString(entity);
                JSONArray jsonArray = JSONArray.fromObject("["+entityString+"]");
                JsonConfig jsonConfig=new JsonConfig();
                jsonConfig.setArrayMode(JsonConfig.MODE_OBJECT_ARRAY);
                jsonConfig.setRootClass(LoginResult.class);
                LoginResult[] results= (LoginResult[]) JSONSerializer.toJava( jsonArray, jsonConfig );
                if(results.length==1){
                    loginResult = results[0];
                }
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }finally{
            try {
                response2.close();
                httpClient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return loginResult;
    }

登录代码：

public boolean login(){
        boolean flag = false;
        LoginResult loginResult = getRedirectUrl();
        if(loginResult.getResult().equals("true")){
            cookieStore = new BasicCookieStore();
            globalClient = HttpClients.custom().setDefaultCookieStore(cookieStore).build();
            HttpGet httpGet = new HttpGet(loginResult.getRedirect());
            httpGet.setHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
            httpGet.setHeader("Accept-Language", "zh-CN,zh;q=0.8");
            httpGet.setHeader("Connection", "keep-alive");
            httpGet.setHeader("Host", HOST);
            httpGet.setHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36");
           try {
            globalClient.execute(httpGet);
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
            List<Cookie> cookies2 = cookieStore.getCookies();
            if (cookies2.isEmpty()) {
                log.error("cookie is empty");
            } else {
                for (int i = 0; i < cookies2.size(); i++) {
                    
                }
            }
        }
        
        return flag;
    }

到此已经登录成功可以进行只有登录号才能做的事了，什么？你不知道当然是灭火了

首先取得需要回复的帖子地址，列表页比较有规律所有没有写自动发现的所以写了个循环@1

for(int i=1;i<200;i++){
            String basurl="http://bbs.dakele.com/forum-43-"+i+".html";
            log.info(basurl);
            List<String> urls = dakele.getThreadURLs(basurl);
            for(String url:urls){
                //log.info(url);
                ReplayContent content = dakele.preReplay(url);
                if(content!=null){
                    log.info(content.getUrl());
                    log.info(content.getMessage());
                    //dakele.replay( content);
                    //Thread.sleep(15300);
                }
            }
        }

在列表页内获取帖子地址：

String html = EntityUtils.toString(entity);
            Document document = Jsoup.parse(html,HOST);
            Elements elements=document.select("tbody[id^=normalthread_] > tr > td.new > a.xst");
            for(int i=0;i<elements.size();i++){
                Element e = elements.get(i);
                urList.add(e.attr("abs:href"));
            }

在需要回复的帖子内获得需要提交的form表单地址以及构造回复内容

public ReplayContent preReplay(String url){
        ReplayContent content = null;
        HttpGet get  = new HttpGet(url);
        get.setHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
        get.setHeader("Accept-Language", "zh-CN,zh;q=0.8");
        get.setHeader("Connection", "keep-alive");
        get.setHeader("Host", HOST);
        get.setHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36");
        try {
            CloseableHttpResponse response = globalClient.execute(get);
            HttpEntity entity = response.getEntity();
            String html = EntityUtils.toString(entity);
            Document document = Jsoup.parse(html, HOST);
            Element postForm = document.getElementById("fastpostform");
            if(!postForm.toString().contains("您现在无权发帖")){
                content = new ReplayContent();
                content.setUrl(url);
                
                log.debug(postForm.attr("abs:action"));
                content.setAction(postForm.attr("abs:action"));
                
                
                ////////
                Elements teElements = document.select("td[id^=postmessage_]");
                String message = "";
                for(int i=0;i<teElements.size();i++){
                    String temp = teElements.get(i).html().replaceAll( "(?is)<.*?>", "");
                    if(temp.contains("发表于")){
                        String[] me = temp.split("\\s+");
                        temp = me[me.length-1];
                    }
                    message+=temp.replaceAll("\\s+", "");
                }
                log.debug(message.replaceAll("\\s+", ""));
                ///////////////
                /*取最后一条评论
                Element messageElement= document.select("td[id^=postmessage_]").last();
//                String message = messageElement.html().replaceAll("\\&[a-zA-Z]{1,10};", "").replaceAll("<[^>]*>", "").replaceAll("[(/>)<]", "");
                String message = messageElement.html().replaceAll( "(?is)<.*?>", "");
                */
                if(message.contains("发表于")){
                    String[] me = message.split("\\s+");
                    message = me[me.length-1];
                }
                content.setMessage(message.replaceAll("&nbsp;", "").replaceAll("上传", "").replaceAll("附件", "").replaceAll("下载", ""));
                Elements inputs = postForm.getElementsByTag("input");
                for(Element input:inputs){
                    log.debug(input.attr("name")+":"+input.attr("value"));
                    if(input.attr("name").equals("posttime")){
                        content.setPosttime(input.attr("value"));
                    }else if(input.attr("name").equals("formhash")){
                        content.setFormhash(input.attr("value"));
                    }else if(input.attr("name").equals("usesig")){
                        content.setUsesig(input.attr("value"));
                    }else if(input.attr("name").equals("subject")){
                        content.setSubject(input.attr("value"));
                    }
                }
            }else{
                log.warn("您现在无权发帖:"+url);
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return content;
    }

地址有了，内容有了接下来开始放水了

public void replay(ReplayContent content){
        
        HttpPost httpost = new HttpPost(content.getAction());
        httpost.setHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
        httpost.setHeader("Accept-Language", "zh-CN,zh;q=0.8");
        httpost.setHeader("Cache-Control", "max-age=0");
        httpost.setHeader("Connection", "keep-alive");
        httpost.setHeader("Host", HOST);
        httpost.setHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36");
        List <NameValuePair> nvps = new ArrayList <NameValuePair>();
        nvps.add(new BasicNameValuePair("posttime", content.getPosttime()));
        nvps.add(new BasicNameValuePair("formhash", content.getFormhash()));
        nvps.add(new BasicNameValuePair("usesig", content.getUsesig()));
        nvps.add(new BasicNameValuePair("subject", content.getSubject()));
        nvps.add(new BasicNameValuePair("message", content.getMessage()));

        httpost.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8));
        //HTTP 三次握手 必须处理响应刚开始没注意卡在这了
        CloseableHttpResponse response2 = null;
       
        try {
            response2 = globalClient.execute(httpost);
            //log.info(content.getAction());
            //log.info(content.getMessage());
            HttpEntity entity = response2.getEntity();
            EntityUtils.consume(entity);
//            BufferedWriter bw= new BufferedWriter(new FileWriter("d:/tt1.html"));
//            bw.write(EntityUtils.toString(response2.getEntity()));
//            bw.flush();
//            bw.close();
            //System.out.println(EntityUtils.toString(response2.getEntity()));
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
    }