TooManyListenersException (Java Platform SE 6)
Java™&PlatformStandard&Ed.&6
Class TooManyListenersException
java.util.TooManyListenersException
All Implemented Interfaces:
public class TooManyListenersExceptionextends
TooManyListenersException
Exception is used as part of
the Java Event model to annotate and implement a unicast special case of
a multicast Event Source.
The presence of a "throws TooManyListenersException" clause on any given
concrete implementation of the normally multicast "void addXyzEventListener"
event listener registration pattern is used to annotate that interface as
implementing a unicast Listener special case, that is, that one and only
one Listener may be registered on the particular event listener source
concurrently.
See Also:,
&&&&&&&&&&Constructs a TooManyListenersException with no detail message.
&&&&&&&&&&Constructs a TooManyListenersException with the specified detail message.
, , , , , , , , , ,
, , , , , , , , ,
TooManyListenersException
public TooManyListenersException()
Constructs a TooManyListenersException with no detail message.
A detail message is a String that describes this particular exception.
TooManyListenersException
public TooManyListenersException(&s)
Constructs a TooManyListenersException with the specified detail message.
A detail message is a String that describes this particular exception.
Parameters:s - the detail message
Java™&PlatformStandard&Ed.&6
For further API reference and developer documentation, see . That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
© , Oracle and/or its affiliates.
All rights reserved. Use is subject to . Also see the .
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import java.io.BufferedR
import java.io.IOE
import java.io.InputStreamR
import java.net.MalformedURLE
import java.net.URL;
import java.util.ArrayL
import java.util.HashM
import java.util.L
import java.util.regex.M
import java.util.regex.P
public class WebContent
* 读取一个网页全部内容
public String getOneHtml(final String htmlurl) throws IOException
final StringBuffer sb = new StringBuffer();
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);
System.out.println(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();
catch (final IOException e)
e.printStackTrace();
return sb.toString();
* @param s
* @return 获得网页标题
public String getTitle(final String s)
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)
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());
* @param s
* @return 获得脚本代码
public List&String& getScript(final String s)
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());
* @param s
* @return 获得CSS
public List&String& getCSS(final String s)
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());
* @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 + &)--------------------&);
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));
* @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:
* http://ks.cn.yahoo.com/question/3.html
* http://ks.cn.yahoo.com/question/7.html
* http://ks.cn.yahoo.com/question/7_2.html
* http://ks.cn.yahoo.com/question/7_3.html
* http://ks.cn.yahoo.com/question/7_4.html
* http://ks.cn.yahoo.com/question/7_5.html
* http://ks.cn.yahoo.com/question/7_6.html
* http://ks.cn.yahoo.com/question/7_7.html
* http://ks.cn.yahoo.com/question/7_8.html
final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
while (!(url = br.readLine()).equals(&go&))
//如果输入不是go那么一直读取
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/3.html&,
* &http://ks.cn.yahoo.com/question/7.html&,
* &http://ks.cn.yahoo.com/question/7_2.html&,
* &http://ks.cn.yahoo.com/question/7_3.html&,
* &http://ks.cn.yahoo.com/question/7_4.html&,
* &http://ks.cn.yahoo.com/question/7_5.html&,
* &http://ks.cn.yahoo.com/question/7_6.html&,
* &http://ks.cn.yahoo.com/question/7_7.html&,
* &http://ks.cn.yahoo.com/question/7_8.html& }; WebContent
* wc = new WebContent(); HashMap&String, String& hm = new HashMap&String,
* String&(); for (int i = 0; i & htmlurl. 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.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));
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