HttpURLConnection 和HttpClient+Jsoup处理标签抓取页面和模拟登录

 

HttpURLConnection 和HttpClient+Jsoup处理标签抓取页面和模拟登录

博客分类： httpclient
HttpURLConnectionHttpClientJsoup
   HttpURLConnection抓取
Java代码  收藏代码
package com.app.html;  
  
import java.io.BufferedReader;  
import java.io.BufferedWriter;  
import java.io.FileNotFoundException;  
import java.io.FileOutputStream;  
import java.io.IOException;  
import java.io.InputStream;  
import java.io.InputStreamReader;  
import java.io.OutputStreamWriter;  
import java.io.UnsupportedEncodingException;  
import java.io.Writer;  
import java.net.HttpURLConnection;  
import java.net.URL;  
import java.net.URLEncoder;  
  
public class Html {  
    private static final String loginURL = "http://login.goodjobs.cn/index.php/action/UserLogin";  
    private static final String forwardURL = "http://user.goodjobs.cn/dispatcher.php/module/Personal/?skip_fill=1";  
      
    /** 
     * 获取登录页面请求 
     * @param loginUrl登录URL 
     * @param params登录用户名/密码参数 
     * @throws Exception 
     */  
    public static String  createHtml(String...params)throws Exception{  
        URL url = new URL(loginURL);  
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();  
        conn.setDoOutput(true);  
        loginHtml(conn, params);  
        return forwardHtml(conn,url);  
    }  
    /** 
     * 登录页面 
     * @param conn 
     * @param params登录用户名/密码参数 
     * @throws Exception 
     */  
    private static void loginHtml(HttpURLConnection conn, String... params)  
            throws Exception {  
        OutputStreamWriter out = new OutputStreamWriter(conn.getOutputStream(), "GBK");  
        StringBuffer buff=new StringBuffer();  
        buff.append("memberName="+URLEncoder.encode(params[0], "UTF-8"));//页面用户名  
        buff.append("&password="+URLEncoder.encode(params[1],"UTF-8"));//页面密码  
        out.write(buff.toString());//填充参数  
        out.flush();  
        out.close();  
    }  
    /** 
     * 转向到定向的页面 
     * @param conn连接对象 
     * @param url重新定向请求URL 
     * @param toUrl定向到页面请求URL 
     * @throws Exception 
     */  
    public static String forwardHtml(HttpURLConnection conn,URL url)throws Exception{  
        //重新打开一个连接  
        String cookieVal = conn.getHeaderField("Set-Cookie");  
        url = new URL(forwardURL);  
        conn = (HttpURLConnection) url.openConnection();  
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");   
        conn.setRequestProperty("User-Agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Foxy/1; .NET CLR 2.0.50727;MEGAUPLOAD 1.0)");   
        conn.setFollowRedirects(false);//置此类是否应该自动执行 HTTP 重定向  
        // 取得cookie,相当于记录了身份,供下次访问时使用  
        if (cookieVal != null) {  
            //发送cookie信息上去,以表明自己的身份,否则会被认为没有权限  
            conn.setRequestProperty("Cookie", cookieVal);  
        }  
        conn.connect();  
        InputStream in = conn.getInputStream();  
        BufferedReader buffReader = new BufferedReader( new InputStreamReader(in,"GBK"));  
        String line = null;  
        String content = "";  
        while ((line = buffReader.readLine()) != null) {  
            content +="\n" +line;  
        }  
        //IOUtils.write(result, new FileOutputStream("d:/index.html"),"GBK");  
        write(content, "d:/forward.html");  
        buffReader.close();  
        return content;  
    }  
      
    /** 
     *  
     * @param content 
     * @param htmlPath 
     * @return 
     */  
     public static boolean write(String content, String htmlPath) {  
            boolean flag = true;  
            try {  
                Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(htmlPath), "GBK"));  
                out.write("\n" + content);  
                out.close();  
            } catch (FileNotFoundException ex) {  
                ex.printStackTrace();  
                return false;  
            } catch (UnsupportedEncodingException ex) {  
                ex.printStackTrace();  
                return false;  
            } catch (IOException ex) {  
                ex.printStackTrace();  
                return false;  
            }  
            return flag;  
        }  
      
      
    public static void main(String[] args)throws Exception{  
        String [] params={"admin","admin12"};  
        System.out.println(createHtml(params));  
    }  
}  
 
 HttpClient抓取页面 未处理样式的
Java代码  收藏代码
package com.app.html;  
import java.io.BufferedWriter;  
import java.io.FileNotFoundException;  
import java.io.FileOutputStream;  
import java.io.IOException;  
import java.io.OutputStreamWriter;  
import java.io.UnsupportedEncodingException;  
import java.io.Writer;  
import java.text.SimpleDateFormat;  
import java.util.Date;  
  
import org.apache.commons.httpclient.Cookie;  
import org.apache.commons.httpclient.HttpClient;  
import org.apache.commons.httpclient.NameValuePair;  
import org.apache.commons.httpclient.cookie.CookiePolicy;  
import org.apache.commons.httpclient.cookie.CookieSpec;  
import org.apache.commons.httpclient.methods.PostMethod;  
import org.apache.commons.httpclient.params.HttpMethodParams;  
  
public class HttpClientHtml {  
    private static final String SITE = "login.goodjobs.cn";  
    private static final int PORT = 80;  
    private static final String loginAction = "/index.php/action/UserLogin";  
    private static final String forwardURL = "http://user.goodjobs.cn/dispatcher.php/module/Personal/?skip_fill=1";  
      
    /** 
     * 模拟等录  
     * @param LOGON_SITE 
     * @param LOGON_PORT 
     * @param login_Action 
     * @param params 
     * @throws Exception 
     */  
    private static HttpClient loginHtml(String LOGON_SITE, int LOGON_PORT,String login_Action,String ...params) throws Exception {  
        HttpClient client = new HttpClient();  
        client.getHostConfiguration().setHost(LOGON_SITE, LOGON_PORT);  
        // 模拟登录页面  
        PostMethod post = new PostMethod(login_Action);  
        NameValuePair userName = new NameValuePair("memberName",params[0] );  
        NameValuePair password = new NameValuePair("password",params[1] );  
        post.setRequestBody(new NameValuePair[] { userName, password });  
        client.executeMethod(post);  
        post.releaseConnection();  
        // 查看cookie信息  
        CookieSpec cookiespec = CookiePolicy.getDefaultSpec();  
        Cookie[] cookies = cookiespec.match(LOGON_SITE, LOGON_PORT, "/", false,  
                client.getState().getCookies());  
        if (cookies != null)  
            if (cookies.length == 0) {  
                   System.out.println("Cookies is not Exists ");  
            } else {  
                for (int i = 0; i < cookies.length; i++) {  
                    System.out.println(cookies[i].toString());  
                }  
            }  
        return client;  
    }  
    /** 
     * 模拟等录 后获取所需要的页面 
     * @param client 
     * @param newUrl 
     * @throws Exception 
     */  
    private static void createHtml(HttpClient client, String newUrl)  
            throws  Exception {  
        PostMethod post = new PostMethod(newUrl);  
        client.executeMethod(post);  
        post.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET, "GBK");  
        String content= post.getResponseBodyAsString();  
        SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd");  
        //IOUtils.write(content, new FileOutputStream("d:/"+format.format(new Date())+".html"),"GBK");  
        write(content,"d:/"+format.format(new Date())+".html");  
        post.releaseConnection();  
    }  
    
      
      
    public static void main(String[] args) throws Exception {  
        String [] params={"admin","admin123"};  
        HttpClient client = loginHtml(SITE, PORT, loginAction,params);  
        // 访问所需的页面  
        createHtml(client, forwardURL);  
       
        //System.out.println(UUID.randomUUID());  
    }  
      
      
    /** 
     *  
     * @param content 
     * @param htmlPath 
     * @return 
     */  
     public static boolean write(String content, String htmlPath) {  
            boolean flag = true;  
            try {  
                Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(htmlPath), "GBK"));  
                out.write("\n" + content);  
                out.close();  
            } catch (FileNotFoundException ex) {  
                ex.printStackTrace();  
                return false;  
            } catch (UnsupportedEncodingException ex) {  
                ex.printStackTrace();  
                return false;  
            } catch (IOException ex) {  
                ex.printStackTrace();  
                return false;  
            }  
            return flag;  
        }  
}  
 
 
 
HttpClient抓取页面处理样式的页面效果（连接服务器站点的css）
Java代码  收藏代码
package com.app.html;  
import java.io.BufferedReader;  
import java.io.BufferedWriter;  
import java.io.File;  
import java.io.FileOutputStream;  
import java.io.FileReader;  
import java.io.IOException;  
import java.io.OutputStreamWriter;  
import java.io.Writer;  
import java.text.SimpleDateFormat;  
import java.util.Date;  
  
import org.apache.commons.httpclient.Cookie;  
import org.apache.commons.httpclient.HttpClient;  
import org.apache.commons.httpclient.NameValuePair;  
import org.apache.commons.httpclient.cookie.CookiePolicy;  
import org.apache.commons.httpclient.cookie.CookieSpec;  
import org.apache.commons.httpclient.methods.PostMethod;  
import org.apache.commons.httpclient.params.HttpMethodParams;  
import org.jsoup.Jsoup;  
import org.jsoup.nodes.Document;  
import org.jsoup.nodes.Element;  
import org.jsoup.select.Elements;  
  
import com.app.comom.FileUtil;  
  
public class HttpClientHtml {  
    private static final String SITE = "login.goodjobs.cn";  
    private static final int PORT = 80;  
    private static final String loginAction = "/index.php/action/UserLogin";  
    private static final String forwardURL = "http://user.goodjobs.cn/dispatcher.php/module/Personal/?skip_fill=1";  
    private static final String toUrl = "d:\\test\\";  
    private static final String css = "http://user.goodjobs.cn/personal.css";  
    private static final String Img = "http://user.goodjobs.cn/images";  
    private static final String _JS = "http://user.goodjobs.cn/scripts/fValidate/fValidate.one.js";  
    /** 
     * 模拟等录  
     * @param LOGON_SITE 
     * @param LOGON_PORT 
     * @param login_Action 
     * @param params 
     * @throws Exception 
     */  
    private static HttpClient loginHtml(String LOGON_SITE, int LOGON_PORT,String login_Action,String ...params) throws Exception {  
        HttpClient client = new HttpClient();  
        client.getHostConfiguration().setHost(LOGON_SITE, LOGON_PORT);  
        // 模拟登录页面  
        PostMethod post = new PostMethod(login_Action);  
        NameValuePair userName = new NameValuePair("memberName",params[0] );  
        NameValuePair password = new NameValuePair("password",params[1] );  
        post.setRequestBody(new NameValuePair[] { userName, password });  
        client.executeMethod(post);  
        post.releaseConnection();  
        // 查看cookie信息  
        CookieSpec cookiespec = CookiePolicy.getDefaultSpec();  
        Cookie[] cookies = cookiespec.match(LOGON_SITE, LOGON_PORT, "/", false,  
                client.getState().getCookies());  
        if (cookies != null)  
            if (cookies.length == 0) {  
                   System.out.println("Cookies is not Exists ");  
            } else {  
                for (int i = 0; i < cookies.length; i++) {  
                    System.out.println(cookies[i].toString());  
                }  
            }  
        return client;  
    }  
    /** 
     * 模拟等录 后获取所需要的页面 
     * @param client 
     * @param newUrl 
     * @throws Exception 
     */  
    private static String  createHtml(HttpClient client, String newUrl) throws  Exception {  
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");  
        String filePath = toUrl + format.format(new Date() )+ "_" + 1 + ".html";  
        PostMethod post = new PostMethod(newUrl);  
        client.executeMethod(post);  
        //设置编码  
        post.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET, "GBK");  
        String content= post.getResponseBodyAsString();  
        FileUtil.write(content, filePath);  
        System.out.println("\n写入文件成功!");  
        post.releaseConnection();  
        return filePath;  
    }  
    /** 
     * 解析html代码 
     * @param filePath 
     * @param random 
     * @return 
     */  
    private static String JsoupFile(String filePath, int random) {  
          
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");  
        File infile = new File(filePath);  
        String url = toUrl + format.format(new Date()) + "_new_" + random+ ".html";  
                  
        try {  
            File outFile = new File(url);  
            Document doc = Jsoup.parse(infile, "GBK");  
            String html="";  
            StringBuffer sb = new StringBuffer();  
            sb.append(html).append("\n");  
            sb.append("").append("\n");  
            sb.append("").append("\n");  
            sb.append("").append("\n");  
            Elements meta = doc.getElementsByTag("meta");  
            sb.append(meta.toString()).append("\n");  
               
            ////////////////////////////body//////////////////////////  
            Elements body = doc.getElementsByTag("body");  
              
            ////////////////////////////link//////////////////////////  
            Elements links = doc.select("link");//对link标签有href的路径都作处理  
              
            for (Element link : links) {  
                String hrefAttr = link.attr("href");  
                if (hrefAttr.contains("/personal.css")) {  
                    hrefAttr = hrefAttr.replace("/personal.css",css);  
                    Element hrefVal=link.attr("href", hrefAttr);//修改href的属性值  
                    sb.append(hrefVal.toString()).append("\n");  
                }  
            }  
            ////////////////////////////script//////////////////////////  
            Elements scripts = doc.select("script");//对script标签   
            for (Element js : scripts) {  
                String jsrc = js.attr("src");  
                if (jsrc.contains("/fValidate.one.js")) {  
                    String oldJS="/scripts/fValidate/fValidate.one.js";//之前的css  
                    jsrc = jsrc.replace(oldJS,_JS);  
                    Element val=js.attr("src", jsrc);//修改href的属性值  
                    sb.append(val.toString()).append("\n").append("");  
                }  
            }  
              
            ////////////////////////////script//////////////////////////  
            Elements tags = body.select("*");//对所有标签有src的路径都作处理  
            for (Element tag : tags) {  
                String src = tag.attr("src");  
                if (src.contains("/images")) {  
                    src = src.replace("/images",Img);  
                    tag.attr("src", src);//修改src的属性值  
                }  
            }  
  
            sb.append(body.toString());  
            sb.append("");  
              
            BufferedReader in = new BufferedReader(new FileReader(infile));  
            Writer out = new BufferedWriter(new OutputStreamWriter( new FileOutputStream(outFile), "gbk"));  
            String content = sb.toString();  
            out.write(content);  
            in.close();  
              
            System.out.println("页面已经爬完");  
            out.close();  
        } catch (IOException e) {  
            e.printStackTrace();  
        }  
        return url;  
    }  
      
    public static void main(String[] args) throws Exception {  
        String [] params={"admin","admin123"};  
        HttpClient client = loginHtml(SITE, PORT, loginAction,params);  
        // 访问所需的页面  
        String path=createHtml(client, forwardURL);  
       System.out.println( JsoupFile(path,1));  
    }  
      
}  
 
 HttpClient抓取页面处理样式的页面效果（从网站下载以txt格式文件写入html处理的css）
Java代码  收藏代码
package com.app.html;  
import java.io.BufferedReader;  
import java.io.BufferedWriter;  
import java.io.File;  
import java.io.FileOutputStream;  
import java.io.FileReader;  
import java.io.IOException;  
import java.io.OutputStreamWriter;  
import java.io.Writer;  
import java.text.SimpleDateFormat;  
import java.util.Date;  
  
import org.apache.commons.httpclient.Cookie;  
import org.apache.commons.httpclient.HttpClient;  
import org.apache.commons.httpclient.NameValuePair;  
import org.apache.commons.httpclient.cookie.CookiePolicy;  
import org.apache.commons.httpclient.cookie.CookieSpec;  
import org.apache.commons.httpclient.methods.PostMethod;  
import org.apache.commons.httpclient.params.HttpMethodParams;  
import org.jsoup.Jsoup;  
import org.jsoup.nodes.Document;  
import org.jsoup.nodes.Element;  
import org.jsoup.select.Elements;  
  
import com.app.comom.FileUtil;  
  
public class HttpClientHtml {  
    private static final String SITE = "login.goodjobs.cn";  
    private static final int PORT = 80;  
    private static final String loginAction = "/index.php/action/UserLogin";  
    private static final String forwardURL = "http://user.goodjobs.cn/dispatcher.php/module/Personal/?skip_fill=1";  
    private static final String toUrl = "d:\\test\\";  
    private static final String hostCss  = "d:\\test\\style.txt";  
    private static final String Img = "http://user.goodjobs.cn/images";  
    private static final String _JS = "http://user.goodjobs.cn/scripts/fValidate/fValidate.one.js";  
    /** 
     * 模拟等录  
     * @param LOGON_SITE 
     * @param LOGON_PORT 
     * @param login_Action 
     * @param params 
     * @throws Exception 
     */  
    private static HttpClient loginHtml(String LOGON_SITE, int LOGON_PORT,String login_Action,String ...params) throws Exception {  
        HttpClient client = new HttpClient();  
        client.getHostConfiguration().setHost(LOGON_SITE, LOGON_PORT);  
        // 模拟登录页面  
        PostMethod post = new PostMethod(login_Action);  
        NameValuePair userName = new NameValuePair("memberName",params[0] );  
        NameValuePair password = new NameValuePair("password",params[1] );  
        post.setRequestBody(new NameValuePair[] { userName, password });  
        client.executeMethod(post);  
        post.releaseConnection();  
        // 查看cookie信息  
        CookieSpec cookiespec = CookiePolicy.getDefaultSpec();  
        Cookie[] cookies = cookiespec.match(LOGON_SITE, LOGON_PORT, "/", false,  
                client.getState().getCookies());  
        if (cookies != null)  
            if (cookies.length == 0) {  
                   System.out.println("Cookies is not Exists ");  
            } else {  
                for (int i = 0; i < cookies.length; i++) {  
                    System.out.println(cookies[i].toString());  
                }  
            }  
        return client;  
    }  
    /** 
     * 模拟等录 后获取所需要的页面 
     * @param client 
     * @param newUrl 
     * @throws Exception 
     */  
    private static String  createHtml(HttpClient client, String newUrl) throws  Exception {  
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");  
        String filePath = toUrl + format.format(new Date() )+ "_" + 1 + ".html";  
        PostMethod post = new PostMethod(newUrl);  
        client.executeMethod(post);  
        //设置编码  
        post.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET, "GBK");  
        String content= post.getResponseBodyAsString();  
        FileUtil.write(content, filePath);  
        System.out.println("\n写入文件成功!");  
        post.releaseConnection();  
        return filePath;  
    }  
    /** 
     * 解析html代码 
     * @param filePath 
     * @param random 
     * @return 
     */  
    private static String JsoupFile(String filePath, int random) {  
          
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");  
        File infile = new File(filePath);  
        String url = toUrl + format.format(new Date()) + "_new_" + random+ ".html";  
                  
        try {  
            File outFile = new File(url);  
            Document doc = Jsoup.parse(infile, "GBK");  
            String html="";  
            StringBuffer sb = new StringBuffer();  
            sb.append(html).append("\n");  
            sb.append("").append("\n");  
            sb.append("").append("\n");  
            sb.append("").append("\n");  
            Elements meta = doc.getElementsByTag("meta");  
            sb.append(meta.toString()).append("\n");  
             /////////////////////////////本地css////////////////////////////  
              
            File cssFile = new File(hostCss);  
            BufferedReader in = new BufferedReader(new FileReader(cssFile));  
            Writer out = new BufferedWriter(new OutputStreamWriter( new FileOutputStream(outFile), "gbk"));    
            String content=in.readLine();  
            while(content!=null){  
                //System.out.println(content);  
                sb.append(content+"\n");  
                content=in.readLine();  
            }  
              
            in.close();  
            ////////////////////////////处理body标签//////////////////////////  
            Elements body = doc.getElementsByTag("body");  
              
               
            ////////////////////////////处理script标签//////////////////////////  
            Elements scripts = doc.select("script");//对script标签   
            for (Element js : scripts) {  
                String jsrc = js.attr("src");  
                if (jsrc.contains("/fValidate.one.js")) {  
                    String oldJS="/scripts/fValidate/fValidate.one.js";//之前的css  
                    jsrc = jsrc.replace(oldJS,_JS);  
                    Element val=js.attr("src", jsrc);//修改href的属性值  
                    sb.append(val.toString()).append("\n").append("");  
                }  
            }  
              
            ////////////////////////////处理所有src的属性值//////////////////////////  
            Elements tags = body.select("*");//对所有标签有src的路径都作处理  
            for (Element tag : tags) {  
                String src = tag.attr("src");  
                if (src.contains("/images")) {  
                    src = src.replace("/images",Img);  
                    tag.attr("src", src);//修改src的属性值  
                }  
            }  
  
            sb.append(body.toString());  
            sb.append("");  
              
            out.write(sb.toString());  
            in.close();  
              
            System.out.println("页面已经爬完");  
            out.close();  
        } catch (IOException e) {  
            e.printStackTrace();  
        }  
        return url;  
    }  
      
    public static void main(String[] args) throws Exception {  
        String [] params={"admin","admin123"};  
        HttpClient client = loginHtml(SITE, PORT, loginAction,params);  
        // 页面生成  
        String path=createHtml(client, forwardURL);  
        System.out.println( JsoupFile(path,1));  
    }  
      
}