Java simulation login internal system to grab web page content

Here is the programming house jb51 CC collects and arranges code fragments through the network.

Programming house Xiaobian now shares it with you and gives you a reference.

@Component 
public class Login  extends BaseJobs {

    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");  
    /** 
     * 获取当月第一天 
     *  
     * @return 
     */  
    public String getFirstDayOfMonth() {  
        Calendar lastDate = Calendar.getInstance();  
        lastDate.set(Calendar.DATE,1);// 设为当前月的1号  
        return sdf.format(lastDate.getTime());  

    }  

    /** 
     * 计算当月最后一天
     * @return 
     */  
    public String getLastDayOfMonth() {  

        Calendar lastDate = Calendar.getInstance();  
        lastDate.set(Calendar.DATE,1);// 设为当前月的1号  
        lastDate.add(Calendar.MONTH,1);// 加一个月，变为下月的1号  
        lastDate.add(Calendar.DATE,-1);// 减去一天，变为当月最后一天  
        return sdf.format(lastDate.getTime());  

    }  

    //测试
    public static void main(String args[]) throws Exception {
        Login l = new Login();
         l.login(); 
    }


    private static CookieStore cs = new BasicCookieStore();

    //利用spring定时器 每天早上10点一刻抓取并发邮件
    @Scheduled(cron = "0 15 10 ? * *")
    public void login() throws Exception {
        DefaultHttpClient httpclient = new DefaultHttpClient();

        // 创建一个本地上下文信息
        HttpContext localContext = new BasicHttpContext();
        // 在本地上下问中绑定一个本地存储
        localContext.setAttribute(ClientContext.COOKIE_STORE,cs); 
        // 目标地址
        HttpPost httppost = new HttpPost(
                "http://***/userLogin.do"); 
        // 传参
        StringEntity reqEntity = new StringEntity(
                "userName=jianancun&password=123456&randNum=565656");
        // 设置类型
        reqEntity.setContentType("application/x-www-form-urlencoded");
        // 设置请求的数据
        httppost.setEntity(reqEntity);
        // 执行
        HttpResponse response = httpclient.execute(httppost);
        //取得所有头内容
        Header[] headers = response.getAllHeaders();
        for (Header h : headers) {
            String name = h.getName();
            String value = h.getValue();
            System.out.println("header : " + h.getName() + ":" + h.getValue()); 
            if ("Set-Cookie".equalsIgnoreCase(name)) {
                String[] strs = value.split(";");
                for (String str : strs) {
                    String[] cookies = str.split("=");
                    //输出cookie名称及标题
                   // System.out.println("=============== : " + cookies[0] + ":" + cookies[1]);
                    cs.addCookie(new BasicClientCookie(cookies[0],cookies[1]));
                }
                cs.addCookie(new BasicClientCookie("userId","8888"));
                cs.addCookie(new BasicClientCookie("userName","jiannancun"));
                cs.addCookie(new BasicClientCookie("state","0")); 
                cs.addCookie(new BasicClientCookie("iAdmin","0")); 
                cs.addCookie(new BasicClientCookie("depCode","0"));
            } 
        } 
        httpentity entity = response.getEntity(); 
        // 显示结果
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                entity.getContent(),"UTF-8"));
        String line = null;
        //返回是否登录成功的内容 忽略
        while ((line = reader.readLine()) != null) {
          //  System.out.println(line);
        }



       //可以添加多个用户
       String jlc[] ={URLEncoder.encode("贱男春"),"[email protected]*.cn","888888"}; 
       List<String[]> list = new ArrayList<String[]>();
       list.add(jlc);

       for(String []u:list){
           //查询本月考勤内容
           String logPath = "http://**.cn/timeCard.jsp?nickName="+u[0]+"&epltimeCard="
           +u[2]+"&begDate="+getFirstDayOfMonth()+"&endDate="+getLastDayOfMonth();
           String content= getContent(logPath); 
            Document doc = Jsoup.parse(content);
            Elements tds = doc.select("table td");
            int i =0;
            //返回的内容
            String html =""; ;
             for (Element td : tds) {
                //取前25行内容   前25行内容显示的是昨天和今天的考勤记录 
                 if(i<25){
                  html+=td.text().replace(u[2],URLDecoder.decode(u[0]))+"<br>" ;
                 } else break;

                 i++;
             } 
            Map<String,Object> map = new HashMap<String,Object>();
                map.put("mailTo",u[1]);
                map.put("mailTitle","考勤提醒");
                map.put("messageBody",html); 
                //发送邮件
                //sendMail(map);
       }
    }
    /**
     *  Function: 请求地址并返回页面内容
     *  @author JNC
     *  @param url
     *  @return
     *  @throws Exception
     */
    private String getContent(String url) throws Exception {
        DefaultHttpClient httpclient = new DefaultHttpClient();
        String cookieStr = "";
        List<Cookie> list = cs.getCookies();
        for (Cookie cookie : list) {
            cookieStr += cookie.getName() + "=" + cookie.getValue() + ";";
        } 
        // 请求目标地址并带上cookie
        HttpGet httpget = new HttpGet(url);
        httpget.setHeader("Cookie",cookieStr); 
        // 执行
        HttpResponse response = httpclient.execute(httpget);
        httpentity entity = response.getEntity();
        String resultStr ="";
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                entity.getContent(),"UTF-8"));
        String line = null;
        while ((line = reader.readLine()) != null) {
            resultStr+=line;
        }
       return resultStr;
    }
}

The above is all the code content collected by the programming home (jb51. CC). I hope this article can help you solve the program development problems you encounter.

If you think the content of the programming home website is good, you are welcome to recommend the programming home website to programmers and friends.