java模拟12306查询余票

时间：2022-01-30 22:46:28
抓取12306官网余票信息



一、前言：

为了学习cookies的应用，之前听过有人写代码，玩转12306，今天自己也尝
试一下，学以致用哈，用12306的数据玩玩。只是抓取余票，功能不完善。

*注意：12306接口信息老是变化，所以，现在写的指不定哪天就不好使了。
 还有，我是直接把查询接口放在代码里面了，（https://kyfw.12306.cn/otn/leftTicket/queryX?leftTicketDTO.train_date=2017-09-  24&leftTicketDTO.from_station=MDB&leftTicketDTO.to_station=HBB&purpose_co  des=ADULT）。返回来的json数据解析后有的不知道是干嘛的，所以我只把有用的  列举出来。






二、代码：

ParseJson.java:
 
package data;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

public class ParseJson {
	public static void main(String args[]) {

		start();
	}

	public static void start() {
		List<String> lists = new ArrayList<String>();
		String jsonCont = Get_12306_html.getContent();
		JSONObject jb = JSONObject.fromObject(jsonCont);
		Pattern p = Pattern.compile("(^[^\\|]).*"); // [a-zA-Z|\\d|\\%].*
		JSONObject data = jb.getJSONObject("data");
		JSONArray ja = data.getJSONArray("result");
		for (Object object : ja) {
			Matcher m = p.matcher(object.toString());
			if (m.find()) {
				lists.add(m.group(0));
			}
		}
		System.out
		.println("<<<<____________>>>>>>----------------------------------------");
		System.out
		.println("车次信息\t出发地\t目的地\t出发时间\t到达时间\t历时\tY\t高级软卧\t软卧\t无座\t硬卧\t硬座\t二等座\t一等座\t商务，特等座");
		for (int i = 0; i < lists.size(); i++) {
			String temp = lists.get(i);
			Pattern tp = Pattern.compile("\\|?[^\\|]*"); // \|?[^\|]*												// [^.|\|]?[^\|]*
			Matcher m = tp.matcher(temp);
			List<String> info = new ArrayList<String>();
			while (m.find()) {
				info.add(m.group());
			}
			System.out.println(info.get(3) + "\t" + info.get(6) + "\t"
					+ info.get(7) + "\t" + info.get(8) + "\t" + info.get(9)
					+ "\t" + info.get(10) + "\t" + info.get(11) + "\t"
					+ info.get(21) + "\t" + info.get(23) + "\t" + info.get(26)
					+ "\t" + info.get(28) + "\t" + info.get(29) + "\t"
					+ info.get(30) + "\t" + info.get(31) + "\t" + info.get(32)+"\n");
			/*info.get(3);// 车次信息
			info.get(6); // 出发地
			info.get(7);// 目的地
			info.get(8); // 出发时间
			info.get(9); // 到达时间
			info.get(10);// 历时
			info.get(11); // Y
			info.get(21); // 高级软卧
			info.get(23); // 软卧
			info.get(26); // 无座
			info.get(28); // 硬卧
			info.get(29); // 硬座
			info.get(30); // 二等座
			info.get(31);// 一等座
			info.get(32); // 商务，特等座
*/		}
	}
}

Get_cookies.java: 
package data;

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class Get_cookies {

	public static String getc() {
		String cookies = null;
		try {
			URL url = new URL("http://dynamic.12306.cn/otn/board/init");
			HttpURLConnection con = (HttpURLConnection) url.openConnection();
			con.setDoInput(true);
			con.setInstanceFollowRedirects(true);
			con.setRequestMethod("GET");
			con.setRequestProperty("Connection", "keep-alive");
			con.setRequestProperty(
					"User-Agent",
					"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.110 Safari/537.36");
			Map<String, List<String>> m = con.getHeaderFields();
			Set<String> s = m.keySet();
			StringBuffer sb = new StringBuffer();
			if (s.contains("Set-Cookie")) {
				List<String> ls = m.get("Set-Cookie");
				for (int i = 0; i < ls.size(); i++) {
					String ss = ls.get(i).substring(0,
							ls.get(i).indexOf(";") + 1);
					sb.append(ss);
				}
			}
			String tt = sb.toString();
			if (tt != null) {
				cookies = tt.substring(0, tt.length() - 1);
			} else {
				cookies = null;
				System.out.println("cookies is null:");
			}
		} catch (MalformedURLException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return cookies;
	}
}

Get_12306_html.java: 
package data;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLSession;


public class Get_12306_html {
	public static String  getContent(){

		String content = null;
		try {
			trustAllHttpsCertificates();  
			HostnameVerifier hv = new HostnameVerifier() {  
				public boolean verify(String urlHostName, SSLSession session) {  
					System.out.println("Warning: URL Host: " + urlHostName + " vs. "  
							+ session.getPeerHost());  
					return true;  
				}
			};
			String cookiess=Get_cookies.getc();
			HttpsURLConnection.setDefaultHostnameVerifier(hv);  
			StringBuffer sb=new StringBuffer();
			URL url=new URL("https://kyfw.12306.cn/otn/leftTicket/queryX?leftTicketDTO.train_date=2017-09-24&leftTicketDTO.from_station=MDB&leftTicketDTO.to_station=HBB&purpose_codes=ADULT");
			HttpsURLConnection con=(HttpsURLConnection) url.openConnection();
			con.setDoInput(true);
			con.setInstanceFollowRedirects(true);
			con.setRequestMethod("GET");
			con.setRequestProperty("Connection", "keep-alive");
			con.setRequestProperty("Referer", "https://kyfw.12306.cn/otn/leftTicket/init");
			con.setRequestProperty("Cookie", cookiess);
			con.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.110 Safari/537.36");
			con.setRequestProperty("X-Requested-With", "XMLHttpRequest");
			if(con.getResponseCode()==200){
				InputStream inp=con.getInputStream();
				InputStreamReader inps=new InputStreamReader(inp,"UTF-8");
				BufferedReader br=new BufferedReader(inps);
				String str=null;
				while((str=br.readLine())!=null){
					sb.append(str);
				}
				content=sb.toString();
			}else{
				System.out.println(con.getResponseCode());
				content=getContent();
			}
		} catch (MalformedURLException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} catch (Exception e) {
			e.printStackTrace();
		}
		return content;
	}

    private static void trustAllHttpsCertificates() throws Exception {  
        javax.net.ssl.TrustManager[] trustAllCerts = new javax.net.ssl.TrustManager[1];  
        javax.net.ssl.TrustManager tm = new miTM();  
        trustAllCerts[0] = tm;  
        javax.net.ssl.SSLContext sc = javax.net.ssl.SSLContext  
                .getInstance("SSL");  
        sc.init(null, trustAllCerts, null);  
        javax.net.ssl.HttpsURLConnection.setDefaultSSLSocketFactory(sc  
                .getSocketFactory());  
    }  

    static class miTM implements javax.net.ssl.TrustManager,  
            javax.net.ssl.X509TrustManager {  
        public java.security.cert.X509Certificate[] getAcceptedIssuers() {  
            return null;  
        }  

        public boolean isServerTrusted(  
                java.security.cert.X509Certificate[] certs) {  
            return true;  
        }  

        public boolean isClientTrusted(  
                java.security.cert.X509Certificate[] certs) {  
            return true;  
        }  

        public void checkServerTrusted(  
                java.security.cert.X509Certificate[] certs, String authType)  
                throws java.security.cert.CertificateException {  
            return;  
        }  

        public void checkClientTrusted(  
                java.security.cert.X509Certificate[] certs, String authType)  
                throws java.security.cert.CertificateException {  
            return;  
        }  
    }  
}

三、截图：
官网信息：
java模拟12306查询余票

Java模拟结果：
java模拟12306查询余票



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