怎么自动采集其他门户网站上的新闻 如题 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 自己模拟http请求 然后获取对端服务器返回的html 最后使用正则获取你要抓取的新闻内容 import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.net.MalformedURLException;import java.net.URL;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.regex.Matcher;import java.util.regex.Pattern;public class WebContent{ /** * 读取一个网页全部内容 */ public String getOneHtml(final String htmlurl) throws IOException { URL url; String temp; final StringBuffer sb = new StringBuffer(); try { url = new URL(htmlurl); final BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream(), "utf-8"));// 读取网页全部内容 while ((temp = in.readLine()) != null) { sb.append(temp); } in.close(); } catch (final MalformedURLException me) { System.out.println("你输入的URL格式有问题!请仔细输入"); me.getMessage(); throw me; } catch (final IOException e) { e.printStackTrace(); throw e; } return sb.toString(); } /** * * @param s * @return 获得网页标题 */ public String getTitle(final String s) { String regex; String title = ""; final List<String> list = new ArrayList<String>(); regex = "<title>.*?</title>"; final Pattern pa = Pattern.compile(regex, Pattern.CANON_EQ); final Matcher ma = pa.matcher(s); while (ma.find()) { list.add(ma.group()); } for (int i = 0; i < list.size(); i++) { title = title + list.get(i); } return outTag(title); } /** * * @param s * @return 获得链接 */ public List<String> getLink(final String s) { String regex; final List<String> list = new ArrayList<String>(); regex = "<a[^>]*href=(\"([^\"]*)\"|\'([^\']*)\'|([^\\s>]*))[^>]*>(.*?)</a>"; final Pattern pa = Pattern.compile(regex, Pattern.DOTALL); final Matcher ma = pa.matcher(s); while (ma.find()) { list.add(ma.group()); } return list; } /** * * @param s * @return 获得脚本代码 */ public List<String> getScript(final String s) { String regex; final List<String> list = new ArrayList<String>(); regex = "<script.*?</script>"; final Pattern pa = Pattern.compile(regex, Pattern.DOTALL); final Matcher ma = pa.matcher(s); while (ma.find()) { list.add(ma.group()); } return list; } /** * * @param s * @return 获得CSS */ public List<String> getCSS(final String s) { String regex; final List<String> list = new ArrayList<String>(); regex = "<style.*?</style>"; final Pattern pa = Pattern.compile(regex, Pattern.DOTALL); final Matcher ma = pa.matcher(s); while (ma.find()) { list.add(ma.group()); } return list; } /** * * @param s * @return 去掉标记 */ public String outTag(final String s) { return s.replaceAll("<.*?>", ""); } /** * * @param s * @return 获取雅虎知识堂文章标题及内容 */ public HashMap<String, String> getFromYahoo(final String s) { final HashMap<String, String> hm = new HashMap<String, String>(); final StringBuffer sb = new StringBuffer(); String html = ""; System.out.println("\n------------------开始读取网页(" + s + ")--------------------"); try { html = getOneHtml(s); } catch (final Exception e) { e.getMessage(); } // System.out.println(html); System.out.println("------------------读取网页(" + s + ")结束--------------------\n"); System.out.println("------------------分析(" + s + ")结果如下--------------------\n"); String title = outTag(getTitle(html)); title = title.replaceAll("_雅虎知识堂", ""); // Pattern pa=Pattern.compile("<div // class=\"original\">(.*?)((\r\n)*)(.*?)((\r\n)*)(.*?)</div>",Pattern.DOTALL); final Pattern pa = Pattern.compile("<div class=\"original\">(.*?)</p></div>", Pattern.DOTALL); final Matcher ma = pa.matcher(html); while (ma.find()) { sb.append(ma.group()); } String temp = sb.toString(); temp = temp.replaceAll("(<br>)+?", "\n");// 转化换行 temp = temp.replaceAll("<p><em>.*?</em></p>", "");// 去图片注释 hm.put("title", title); hm.put("original", outTag(temp)); return hm; } /** * * @param args * 测试一组网页,针对雅虎知识堂 */ public static void main(final String args[]) { String url = ""; final List<String> list = new ArrayList<String>(); System.out.print("输入URL,一行一个,输入结束后输入 go 程序开始运行: \n"); /* * http://ks.cn.yahoo.com/question/1307121201133.html * http://ks.cn.yahoo.com/question/1307121101907.html * http://ks.cn.yahoo.com/question/1307121101907_2.html * http://ks.cn.yahoo.com/question/1307121101907_3.html * http://ks.cn.yahoo.com/question/1307121101907_4.html * http://ks.cn.yahoo.com/question/1307121101907_5.html * http://ks.cn.yahoo.com/question/1307121101907_6.html * http://ks.cn.yahoo.com/question/1307121101907_7.html * http://ks.cn.yahoo.com/question/1307121101907_8.html */ final BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); try { while (!(url = br.readLine()).equals("go")) { list.add(url); } } catch (final Exception e) { e.getMessage(); } final WebContent wc = new WebContent(); HashMap<String, String> hm = new HashMap<String, String>(); for (int i = 0; i < list.size(); i++) { hm = wc.getFromYahoo(list.get(i)); System.out.println("标题: " + hm.get("title")); System.out.println("内容: \n" + hm.get("original")); } /* * String htmlurl[] = { * "http://ks.cn.yahoo.com/question/1307121201133.html", * "http://ks.cn.yahoo.com/question/1307121101907.html", * "http://ks.cn.yahoo.com/question/1307121101907_2.html", * "http://ks.cn.yahoo.com/question/1307121101907_3.html", * "http://ks.cn.yahoo.com/question/1307121101907_4.html", * "http://ks.cn.yahoo.com/question/1307121101907_5.html", * "http://ks.cn.yahoo.com/question/1307121101907_6.html", * "http://ks.cn.yahoo.com/question/1307121101907_7.html", * "http://ks.cn.yahoo.com/question/1307121101907_8.html" }; WebContent * wc = new WebContent(); HashMap<String, String> hm = new HashMap<String, * String>(); for (int i = 0; i < htmlurl.length; i++) { hm = * wc.getFromYahoo(htmlurl[i]); System.out.println("标题: " + * hm.get("title")); System.out.println("内容: \n" + hm.get("original")); } */ /* * String html=""; String link=""; String sscript=""; String content=""; * System.out.println(htmlurl+" 开始读取网页内容:"); * html=wc.getOneHtml(htmlurl); System.out.println(htmlurl+" * 读取完毕开始分析……"); html=html.replaceAll("(<script.*?)((\r\n)*)(.*?)((\r\n)*)(.*?)(</script>)"," * ");//去除脚本 html=html.replaceAll("(<style.*?)((\r\n)*)(.*?)((\r\n)*)(.*?)(</style>)"," * ");//去掉CSS html=html.replaceAll("<title>.*?</title>"," ");//除去页面标题 * html=html.replaceAll("<a[^>]*href=(\"([^\"]*)\"|\'([^\']*)\'|([^\\s>]*))[^>]*>(.*?)</a>"," * ");//去掉链接 html=html.replaceAll("(\\s){2,}?"," ");//除去多余空格 * html=wc.outTag(html);//多余标记 System.out.println(html); */ /* * String s[]=html.split(" +"); for(int i=0;i<s.length;i++){ * content=(content.length()>s[i].length())?content:s[i]; } * System.out.println(content); */ // System.out.println(htmlurl+"网页内容结束"); /* * System.out.println(htmlurl+"网页脚本开始:"); List * script=wc.getScript(html); for(int i=0;i<script.size();i++){ * System.out.println(script.get(i)); } * System.out.println(htmlurl+"网页脚本结束:"); * * System.out.println(htmlurl+"CSS开始:"); List css=wc.getCSS(html); * for(int i=0;i<css.size();i++){ System.out.println(css.get(i)); } * System.out.println(htmlurl+"CSS结束:"); * * System.out.println(htmlurl+"全部链接内容开始:"); List list=wc.getLink(html); * for(int i=0;i<list.size();i++){ link=list.get(i).toString(); } * System.out.println(htmlurl+"全部链接内容结束:"); * * System.out.println("内容"); System.out.println(wc.outTag(html)); */ }} 用ext实现上传文件的源代码 svn的本地导出 急!谁给个限制用户直接输入网址访问JSP页面的过滤器代码 关于jsp在线聊天的问题(急) vb里的split,ubound在jsp里怎么处理 STRUTS2 + SiteMesh问题 在jsp中报错Syntax error on token "=", != expected 请问,在Jsp中如何执行系统命令,并得到命令的返回值? 怎样在textarea中插入html语句? 有没有比较好的介绍JavaWeb的完整项目的书籍 import session小问题 Quartz Cron表达式
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class WebContent
{
/**
* 读取一个网页全部内容
*/
public String getOneHtml(final String htmlurl) throws IOException
{
URL url;
String temp;
final StringBuffer sb = new StringBuffer();
try
{
url = new URL(htmlurl);
final BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream(), "utf-8"));// 读取网页全部内容
while ((temp = in.readLine()) != null)
{
sb.append(temp);
}
in.close();
}
catch (final MalformedURLException me)
{
System.out.println("你输入的URL格式有问题!请仔细输入");
me.getMessage();
throw me;
}
catch (final IOException e)
{
e.printStackTrace();
throw e;
}
return sb.toString();
} /**
*
* @param s
* @return 获得网页标题
*/
public String getTitle(final String s)
{
String regex;
String title = "";
final List<String> list = new ArrayList<String>();
regex = "<title>.*?</title>";
final Pattern pa = Pattern.compile(regex, Pattern.CANON_EQ);
final Matcher ma = pa.matcher(s);
while (ma.find())
{
list.add(ma.group());
}
for (int i = 0; i < list.size(); i++)
{
title = title + list.get(i);
}
return outTag(title);
} /**
*
* @param s
* @return 获得链接
*/
public List<String> getLink(final String s)
{
String regex;
final List<String> list = new ArrayList<String>();
regex = "<a[^>]*href=(\"([^\"]*)\"|\'([^\']*)\'|([^\\s>]*))[^>]*>(.*?)</a>";
final Pattern pa = Pattern.compile(regex, Pattern.DOTALL);
final Matcher ma = pa.matcher(s);
while (ma.find())
{
list.add(ma.group());
}
return list;
} /**
*
* @param s
* @return 获得脚本代码
*/
public List<String> getScript(final String s)
{
String regex;
final List<String> list = new ArrayList<String>();
regex = "<script.*?</script>";
final Pattern pa = Pattern.compile(regex, Pattern.DOTALL);
final Matcher ma = pa.matcher(s);
while (ma.find())
{
list.add(ma.group());
}
return list;
} /**
*
* @param s
* @return 获得CSS
*/
public List<String> getCSS(final String s)
{
String regex;
final List<String> list = new ArrayList<String>();
regex = "<style.*?</style>";
final Pattern pa = Pattern.compile(regex, Pattern.DOTALL);
final Matcher ma = pa.matcher(s);
while (ma.find())
{
list.add(ma.group());
}
return list;
} /**
*
* @param s
* @return 去掉标记
*/
public String outTag(final String s)
{
return s.replaceAll("<.*?>", "");
} /**
*
* @param s
* @return 获取雅虎知识堂文章标题及内容
*/
public HashMap<String, String> getFromYahoo(final String s)
{
final HashMap<String, String> hm = new HashMap<String, String>();
final StringBuffer sb = new StringBuffer();
String html = "";
System.out.println("\n------------------开始读取网页(" + s + ")--------------------");
try
{
html = getOneHtml(s);
}
catch (final Exception e)
{
e.getMessage();
}
// System.out.println(html);
System.out.println("------------------读取网页(" + s + ")结束--------------------\n");
System.out.println("------------------分析(" + s + ")结果如下--------------------\n");
String title = outTag(getTitle(html));
title = title.replaceAll("_雅虎知识堂", "");
// Pattern pa=Pattern.compile("<div
// class=\"original\">(.*?)((\r\n)*)(.*?)((\r\n)*)(.*?)</div>",Pattern.DOTALL);
final Pattern pa = Pattern.compile("<div class=\"original\">(.*?)</p></div>", Pattern.DOTALL);
final Matcher ma = pa.matcher(html);
while (ma.find())
{
sb.append(ma.group());
}
String temp = sb.toString();
temp = temp.replaceAll("(<br>)+?", "\n");// 转化换行
temp = temp.replaceAll("<p><em>.*?</em></p>", "");// 去图片注释
hm.put("title", title);
hm.put("original", outTag(temp));
return hm; } /**
*
* @param args
* 测试一组网页,针对雅虎知识堂
*/
public static void main(final String args[])
{
String url = "";
final List<String> list = new ArrayList<String>();
System.out.print("输入URL,一行一个,输入结束后输入 go 程序开始运行: \n");
/*
* http://ks.cn.yahoo.com/question/1307121201133.html
* http://ks.cn.yahoo.com/question/1307121101907.html
* http://ks.cn.yahoo.com/question/1307121101907_2.html
* http://ks.cn.yahoo.com/question/1307121101907_3.html
* http://ks.cn.yahoo.com/question/1307121101907_4.html
* http://ks.cn.yahoo.com/question/1307121101907_5.html
* http://ks.cn.yahoo.com/question/1307121101907_6.html
* http://ks.cn.yahoo.com/question/1307121101907_7.html
* http://ks.cn.yahoo.com/question/1307121101907_8.html
*/
final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
try
{
while (!(url = br.readLine()).equals("go"))
{
list.add(url);
}
}
catch (final Exception e)
{
e.getMessage();
}
final WebContent wc = new WebContent();
HashMap<String, String> hm = new HashMap<String, String>();
for (int i = 0; i < list.size(); i++)
{
hm = wc.getFromYahoo(list.get(i));
System.out.println("标题: " + hm.get("title"));
System.out.println("内容: \n" + hm.get("original"));
}
/*
* String htmlurl[] = {
* "http://ks.cn.yahoo.com/question/1307121201133.html",
* "http://ks.cn.yahoo.com/question/1307121101907.html",
* "http://ks.cn.yahoo.com/question/1307121101907_2.html",
* "http://ks.cn.yahoo.com/question/1307121101907_3.html",
* "http://ks.cn.yahoo.com/question/1307121101907_4.html",
* "http://ks.cn.yahoo.com/question/1307121101907_5.html",
* "http://ks.cn.yahoo.com/question/1307121101907_6.html",
* "http://ks.cn.yahoo.com/question/1307121101907_7.html",
* "http://ks.cn.yahoo.com/question/1307121101907_8.html" }; WebContent
* wc = new WebContent(); HashMap<String, String> hm = new HashMap<String,
* String>(); for (int i = 0; i < htmlurl.length; i++) { hm =
* wc.getFromYahoo(htmlurl[i]); System.out.println("标题: " +
* hm.get("title")); System.out.println("内容: \n" + hm.get("original")); }
*/
/*
* String html=""; String link=""; String sscript=""; String content="";
* System.out.println(htmlurl+" 开始读取网页内容:");
* html=wc.getOneHtml(htmlurl); System.out.println(htmlurl+"
* 读取完毕开始分析……"); html=html.replaceAll("(<script.*?)((\r\n)*)(.*?)((\r\n)*)(.*?)(</script>)","
* ");//去除脚本 html=html.replaceAll("(<style.*?)((\r\n)*)(.*?)((\r\n)*)(.*?)(</style>)","
* ");//去掉CSS html=html.replaceAll("<title>.*?</title>"," ");//除去页面标题
* html=html.replaceAll("<a[^>]*href=(\"([^\"]*)\"|\'([^\']*)\'|([^\\s>]*))[^>]*>(.*?)</a>","
* ");//去掉链接 html=html.replaceAll("(\\s){2,}?"," ");//除去多余空格
* html=wc.outTag(html);//多余标记 System.out.println(html);
*/ /*
* String s[]=html.split(" +"); for(int i=0;i<s.length;i++){
* content=(content.length()>s[i].length())?content:s[i]; }
* System.out.println(content);
*/ // System.out.println(htmlurl+"网页内容结束");
/*
* System.out.println(htmlurl+"网页脚本开始:"); List
* script=wc.getScript(html); for(int i=0;i<script.size();i++){
* System.out.println(script.get(i)); }
* System.out.println(htmlurl+"网页脚本结束:");
*
* System.out.println(htmlurl+"CSS开始:"); List css=wc.getCSS(html);
* for(int i=0;i<css.size();i++){ System.out.println(css.get(i)); }
* System.out.println(htmlurl+"CSS结束:");
*
* System.out.println(htmlurl+"全部链接内容开始:"); List list=wc.getLink(html);
* for(int i=0;i<list.size();i++){ link=list.get(i).toString(); }
* System.out.println(htmlurl+"全部链接内容结束:");
*
* System.out.println("内容"); System.out.println(wc.outTag(html));
*/
}
}