Java通过httpclient模拟登录




方法1：

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.methods.GetMethod;

import  org.apache.commons.httpclient.methods.PostMethod;

 

public  class  HttpLogin {

 

     public  static  void  main(String[] args) {

         // 登陆 Url

         String loginUrl =  "http://passport.mop.com/?targetUrl=http://hi.mop.com/?&g=1447141423230&loginCheck=UNLOGINED" ;

         // 需登陆后访问的 Url

         String dataUrl =  "http://hi.mop.com/?" ;

         HttpClient httpClient =  new  HttpClient();

 

         // 模拟登陆，按实际服务器端要求选用 Post 或 Get 请求方式

         PostMethod postMethod =  new  PostMethod(loginUrl);

 

         // 设置登陆时要求的信息，用户名和密码

         NameValuePair[] data = {  new  NameValuePair( "loginName" ,  "chzeze123" ), 

                                new  NameValuePair( "loginPasswd" ,  "**" ) };

         postMethod.setRequestBody(data);

         try  {

             // 设置 HttpClient 接收 Cookie,用与浏览器一样的策略

             httpClient.getParams().setCookiePolicy(CookiePolicy.BROWSER_COMPATIBILITY);

             int  statusCode=httpClient.executeMethod(postMethod);

                             

             // 获得登陆后的 Cookie

             Cookie[] cookies = httpClient.getState().getCookies();

             StringBuffer tmpcookies =  new  StringBuffer();

             for  (Cookie c : cookies) {

                 tmpcookies.append(c.toString() +  ";" );

                 System.out.println( "cookies = " +c.toString());

             }

             if (statusCode== 302 ){ //重定向到新的URL

                 System.out.println( "模拟登录成功" );

                 // 进行登陆后的操作

                 GetMethod getMethod =  new  GetMethod(dataUrl);

                 // 每次访问需授权的网址时需带上前面的 cookie 作为通行证

                // （httpClient客户端 会自动带上  如不是特殊要求一般不进行设置）

                getMethod.setRequestHeader( "cookie" , tmpcookies.toString());

                 // 你还可以通过 PostMethod/GetMethod 设置更多的请求后数据

                 // 例如，referer 从哪里来的，UA 像搜索引擎都会表名自己是谁，无良搜索引擎除外

                 postMethod.setRequestHeader( "Referer" ,  "http://passport.mop.com/" );

                 postMethod.setRequestHeader( "User-Agent" ,  "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.63 Safari/537.36" );

                 httpClient.executeMethod(getMethod);

                 // 打印出返回数据，检验一下是否成功

                 String text = getMethod.getResponseBodyAsString();

                 System.out.println(text);

             }

             else  {

                 System.out.println( "登录失败" );

             }

         }

         catch  (Exception e) {

             e.printStackTrace();

         }

     }

}

方法2：

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.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class Test  {

    public static void main(String[] args) throws IOException {
        InputStreamReader inputStreamReader = null;
        BufferedReader reader = null;
        String line = null;
        //两个页面参数
        //据我观察这个url不变
        String backUrl = "http%3A%2F%2Fredmine.tvbanywhere.net%2Fredmine%2F";
        String authenticityToken = null;

        //创建httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();

        //get请求访问这个url是页面
        //获取auth_token
        HttpGet getParam = new HttpGet("http://redmine.tvbanywhere.net/redmine/login");
        CloseableHttpResponse response1 = httpClient.execute(getParam);
        InputStream inputStream1 = response1.getEntity().getContent();
        inputStreamReader = new InputStreamReader(inputStream1);
        reader = new BufferedReader(inputStreamReader);
        while ((line = reader.readLine())!= null){
            if (line.contains("name=\"authenticity_token\"")){
                System.out.println(line);
                String sub1 = line.substring(line.indexOf("value=\"") + 7);
                authenticityToken = sub1.substring(0, sub1.indexOf("\""));
            }
        }
        reader.close();
        inputStreamReader.close();
        inputStream1.close();
        //post 请求是登录操作
        HttpPost dologin = new HttpPost("http://redmine.tvbanywhere.net/redmine/login");
        List<NameValuePair> list = new ArrayList<NameValuePair>();
        list.add(new BasicNameValuePair("authenticity_token",authenticityToken));
        list.add(new BasicNameValuePair("back_url",backUrl));
        list.add(new BasicNameValuePair("username","[email protected]"));
        list.add(new BasicNameValuePair("password","[email protected]"));
        UrlEncodedFormEntity urlEncodedFormEntity = null;
        urlEncodedFormEntity = new UrlEncodedFormEntity(list);
        dologin.setEntity(urlEncodedFormEntity);
        CloseableHttpResponse response2 = httpClient.execute(dologin);

        HttpGet get1 = new HttpGet("http://redmine.tvbanywhere.net/redmine/search?issues=1&[email protected]");
        CloseableHttpResponse response3 = httpClient.execute(get1);
        System.err.println("get" + get1.getURI());
        InputStream inputStream3 = response3.getEntity().getContent();
        inputStreamReader = new InputStreamReader(inputStream3);
        reader = new BufferedReader(inputStreamReader);
        while ((line = reader.readLine()) != null){
            System.out.println(line);
        }
    }
}