httpclient 爬虫实例——爬取中学名（总计6万+）

本人在使用 httpclient 的过程中，突然想起来可以爬取一些数据，比如全国的中学名。当然不是空穴来风，之前也做过这方面的爬虫，不过基于selenium 做的 UI 脚本，效率非常慢，而且很不稳定，所以这次采取了接口的形式，果然效率提升了几个档次。一共6万+数据，用了16分钟左右，期间包括数据库的存储。现在分享代码供大家参考。关键信息隐去，大家看一下思路就好了。
package practise;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.http.client.methods.HttpGet;
import net.sf.json.JSONObject;
import source.ApiLibrary;
import source.Concurrent;

public class Crawler extends ApiLibrary {
public static String host = "";
public static Map<String, Integer> countrys = new HashMap<>();
public static Map<String, Integer> citys = new HashMap<>();
public static Map<String, Integer> address = new HashMap<>();
public static Map<String, Integer> school = new HashMap<>();
public static List<String> total = new ArrayList<>();

public static void main(String[] args) {
Crawler crawler = new Crawler();
crawler.getCountry1();// 省份
Set<String> countryId = countrys.keySet();
for (String name : countryId) {
int id = countrys.get(name);
crawler.getCountry2(id);// 市
Set<String> cityId = citys.keySet();
for (String city : cityId) {
int cid = citys.get(city);
crawler.getCountry3(cid);// 县
Set<String> adresss = address.keySet();
for (String adres : adresss) {
int aid = address.get(adres);
crawler.getCountry4(aid);// 名
Set<String> schol = school.keySet();
for (String sch : schol) {
String line = name + PART + city + PART + adres + PART + sch;
total.add(line);
}
}
}
}
Concurrent.saveRequestTimes(total);
testOver();
}

/**
* 查询省份
*/
public void getCountry1() {
String url = host + "/user/editinfo/getSchollCountryList";
HttpGet httpGet = getHttpGet(url);
// httpGet.addHeader("Cookie", cookies);
// httpGet.addHeader("User-Agent", userangent);
JSONObject response = getHttpResponseEntityByJson(httpGet);
String[] country = response.getString("content").split("</a>");
int size = country.length;
for (int i = 0; i < size; i++) {
String msg = country[i];
int code = getCode(msg);
String name = getName(msg);
countrys.put(name, code);
}
}

/**
* 查询市
*
* @param id
*/
public void getCountry2(int id) {
String url = host + "/user/editinfo/getSchollCityList?region_id=" + id;
HttpGet httpGet = getHttpGet(url);
JSONObject response = getHttpResponseEntityByJson(httpGet);
String[] ssString = response.getString("content").split("</a>");
int size = ssString.length;
citys.clear();
for (int i = 0; i < size; i++) {
String msg = ssString[i];
int code = getCode(msg);
String name = getName(msg);
citys.put(name, code);
}

}

/**
* 查询县
*
* @param id
*/
public void getCountry3(int id) {
String url = host + "/user/editinfo/getSchollAddressList?region_id=" + id;
HttpGet httpGet = getHttpGet(url);
JSONObject response = getHttpResponseEntityByJson(httpGet);
String[] ssString = response.getString("content").split("</a>");
int size = ssString.length;
address.clear();
for (int i = 0; i < size; i++) {
String msg = ssString[i];
int code = getCode(msg);
String name = getName(msg);
address.put(name, code);
}
}

/**
* 查询学校
*
* @param id
*/
public void getCountry4(int id) {
String url = host + "/user/editinfo/getSchoolNameList?region_id=" + id;
HttpGet httpGet = getHttpGet(url);
JSONObject response = getHttpResponseEntityByJson(httpGet);
String[] ssString = response.getString("content").split("</a>");
int size = ssString.length;
school.clear();
for (int i = 0; i < size; i++) {
String msg = ssString[i];
int code = getCode(msg);
String name = getName(msg);
school.put(name, code);
}
}

/**
* 获取 code
*
* @param text
* @return
*/
public int getCode(String text) {
int code = 0;
Pattern pattern = Pattern.compile("\"\\d+\"");
Matcher matcher = pattern.matcher(text);
if (matcher.find()) {
code = changeStringToInt(matcher.group(0).replace("\"", ""));
}
return code;
}

/**
* 获取名称
*
* @param text
* @return
*/
public String getName(String text) {
String name = text.substring(text.lastIndexOf(">") + 1, text.length());
return name;
}

}
中间关键的方法在可以在我早先的 httpclient 接口源码文章中找到。接口封装源码传送门
下面是爬取到数据截图



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