MinerUtil.java 爬虫工具类
package com.iteye.injavawetrust.miner;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TimeZone;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jsoup.Connection;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
/**
* 爬虫工具类
* @author InJavaWeTrust
*
*/
public class MinerUtil {
private static final Log LOG = LogFactory.getLog(MinerUtil.class);
public static long starTime = 0;
/**
* 判断是否为空
* @param param
* @return true-为空;false-非空
*/
public static boolean isBlank(String param) {
return (null == param || "".equals(param.trim())) ? true : false;
}
/**
* URL是否以html结尾
* @param url
* @return true-是;false-否
*/
public static boolean checkURL(String url) {
String html = url.substring(url.lastIndexOf(".") + 1);
return "html".equals(html) ? true : false;
}
/**
* URL列表是否包含关键字
* @param key 关键字
* @param keys URL列表
* @return true-是;false-否
*/
public static boolean checkKeys(String key, List<String> keys) {
boolean flag = false;
for(String k : keys) {
if(key.contains(k)){
flag = true;
break;
}
}
return flag;
}
public static boolean isValidFileName(String fileName) {
if (fileName == null || fileName.length() > 255){
return false;
} else {
return fileName
.matches("[^\s\\/:\*\?\"<>\|](\x20|[^\s\\/:\*\?\"<>\|])*[^\s\\/:\*\?\"<>\|\.]$");
}
}
/**
* 获取URL
* @param url URL
* @return URL
*/
public static Set<String> getAllUrl(String url){
Set<String> urls = new HashSet<String>();
try {
Connection conn = Jsoup.connect(url);
conn.header("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/525.13 (KHTML, like Gecko) Chrome/0.2.149.27 Safari/525.13");//模拟浏览器
Document document = conn.timeout(5000).get();
Elements hrefs = document.select("a[href]");
Iterator<Element> hrefIter = hrefs.iterator();
while (hrefIter.hasNext()) {
Element href = hrefIter.next();
urls.add(href.attr("href"));
}
} catch (Exception e) {
LOG.info("获取URL出现异常，异常URL[" + url + "]");
LOG.info("异常信息[" + e.getMessage() + "]");
}
return urls;
}
/**
* 毫秒转换成hhmmss
* @param ms 毫秒
* @return hh:mm:ss
*/
public static String msToss(long ms) {
SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
formatter.setTimeZone(TimeZone.getTimeZone("GMT+00:00"));
String ss = formatter.format(ms);
return ss;
}
/**
* 将html写入本地文件
* @param htmlText html内容
* @param htmlName html名称
*/
public static void getHtmlToLocal(Map<String, String> map){
Writer writer = null;
try {
String path = MinerConstanits.HTMLPATH + getToday();
makeDir(path);
writer = new OutputStreamWriter(new FileOutputStream(new File(path
+ File.separator + map.get("title"))), "UTF-8");
writer.write(map.get("html"));
writer.flush();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (writer != null) {
try {
writer.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
* 文件名不能包含下列任何字符:<br>
* /:*?"<>|
* @param title 标题
* @return 去掉文件名不能包含的字符
*/
public static String fileName(String title){
return title
.replaceAll("\\", "")
.replaceAll("/", "")
.replaceAll(":", "")
.replaceAll("\*", "")
.replaceAll("\?", "")
.replaceAll(""", "")
.replaceAll("<", "")
.replaceAll(">", "")
.replaceAll("\|", "");
}
/**
* 获取当天日期
* @return 当天日期
*/
public static String getToday(){
String result = "";
Date date = new Date();
result = format(date);
return result;
}
/**
* 格式化日期
* @param date 日期
* @return yyyymmdd 日期
*/
public static String format(Date date){
String format = "yyyyMMdd";
SimpleDateFormat fmt = new SimpleDateFormat(format);
return fmt.format(date);
}
/**
* 创建存储目录
* @param path 存储目录
*/
public static void makeDir(String path) {
File file = new File(path);
if(!file.exists()){
file.mkdirs();
LOG.info("创建存储目录[" + path + "]");
}
}
public static boolean checkBeforeStart(MinerConfig config) {
if(null == config){
LOG.info("config未配置！！！");
return false;
}
if(null == config.getKeys() || 0 == config.getKeys().size()){
LOG.info("包含关键字未配置！！！");
return false;
}
if(null == config.getStoreType()){
LOG.info("存储方式未配置！！！");
return false;
}
if(config.getMaxDepth() < 1){
LOG.info("爬取页面最大深度配置错误！！！");
return false;
}
if(config.getMinerHtmlThreadNum() < 1){
LOG.info("下载页面线程数配置错误！！！");
return false;
}
if(config.getMiseringThreadNum() < 1){
LOG.info("分析页面线程数配置错误！！！");
return false;
}
if(config.getMinserStoreThreadNum() < 1){
LOG.info("存储线程数配置错误！！！");
return false;
}
return true;
}
public static void main(String[] args) {
String path = MinerConstanits.HTMLPATH + File.separator + getToday();
makeDir(path);
// System.out.println(getToday());
// String test = "http://my.163.com/2015/11/27/17763_578935.html";
// System.out.println(fileName(test));
// System.out.println(MinerUtil.isBlank(null));
// System.out.println(MinerUtil.isBlank(""));
// System.out.println(MinerUtil.isBlank(" "));
// System.out.println(MinerUtil.isBlank("bbb"));
// System.out.println(MinerUtil.isBlank(" bbb "));
// String key = "http://www.jqu.net.cn";
// List<String> keys = new ArrayList<String>();
// keys.add("http://www.jqu.net.cn");
// System.out.println(MinerUtil.checkKeys(key, keys));
}
}
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