正则表达式匹配测试

package com.day1015.java;public class T1 {public static void main(String[] args) {//正则表达式String regex = "\\w+@.*.(com|cn)";String str = "11@qq.com";System.out.println(str.matchches(regex)); }
}

测试结果

true进程已结束，退出代码 0

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<cc><div id="post_content_12828853230" class="d_post_content">278437442@qq.com&nbsp;&nbsp;&nbsp;  谢谢大哥2 .</div></cc><br>
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<ul class="p_tail"><li><span class="">13楼</span></li><li><span>2011-06-22 12:59</span></li></ul>
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<cc><div id="post_content_12829025813" class="d_post_content">286812181@qq.com 好人一生平安！！！</div></cc><br>
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<ul class="p_tail"><li><span class="">14楼</span></li><li><span>2011-06-22 13:11</span></li></ul>
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<cc><div id="post_content_12829731602" class="d_post_content">241508102@qq.com 好人一生平安</div></cc><br>
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<ul class="p_tail"><li><span class="">15楼</span></li><li><span>2011-06-22 14:02</span></li></ul>
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<ul class="p_tail"><li><span class="">16楼</span></li><li><span>2011-06-22 15:24</span></li></ul>
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<cc><div id="post_content_12831007094" class="d_post_content">zhw440111@163.com好人一生平安啊！！！</div></cc><br>
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<ul class="p_tail"><li><span class="">17楼</span></li><li><span>2011-06-22 15:45</span></li></ul>
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吧友220.231.177.*</div>
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<cc><div id="post_content_12832004993" class="d_post_content">290477167@qq.com  好人一生平安啊！！！</div></cc><br>
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<ul class="p_tail"><li><span class="">18楼</span></li><li><span>2011-06-22 17:01</span></li></ul>
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<cc><div id="post_content_12833044961" class="d_post_content">给个种子吧，可怜可怜我们，给个种子吧371303485@qq.com<img class="BDE_Smiley" src="./求片求片_百度贴吧_files/j_0054.gif" width="25" height="25" changedsize="false"></div></cc><br>
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<ul class="p_tail"><li><span class="">19楼</span></li><li><span>2011-06-22 18:18</span></li></ul>
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<cc><div id="post_content_12833845361" class="d_post_content">LZ  求种啊！！794629578@qq.com&nbsp;&nbsp;&nbsp;  谢谢LZ&nbsp;&nbsp;&nbsp;  身体健康  万事如意啊！！</div></cc><br>
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<ul class="p_tail"><li><span class="">20楼</span></li><li><span>2011-06-22 19:15</span></li></ul>
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吧友113.76.255.*</div>
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<cc><div id="post_content_12838674849" class="d_post_content">LZ 求种啊！！383093318@qq.com&nbsp;&nbsp;&nbsp;  谢谢LZ&nbsp;&nbsp;&nbsp;  身体健康 万事如意啊！！<br></div></cc><br>
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<ul class="p_tail"><li><span class="">21楼</span></li><li><span>2011-06-23 00:22</span></li></ul>
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<cc><div id="post_content_12838942118" class="d_post_content">跪求 XXXX种子  兽兽视频交换  952839555@qq.com</div></cc><br>
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<cc><div id="post_content_12851823719" class="d_post_content">好人一生平安啊！！跪求！623648322@qq.com</div></cc><br>
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<cc><div id="post_content_12848486962" class="d_post_content">求种子
！546754028@qq.com&nbsp;&nbsp;  感激不尽！</div></cc><br>
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<ul class="p_tail"><li><span class="">28楼</span></li><li><span>2011-06-23 19:10</span></li></ul>
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</div>
</div>
<div class="clearfloat"></div>
</div>
<div class="l_post " data-passive="loaded">
<a name="#30"></a>
<div class="p_post" data-field="{&quot;author&quot;:{&quot;name&quot;:&quot;202.99.248.*&quot;},&quot;content&quot;:{&quot;id&quot;:12850137320,&quot;is_anonym&quot;:1,&quot;open_id&quot;:&quot;tieba&quot;,&quot;open_type&quot;:&quot;&quot;,&quot;date&quot;:&quot;2011-06-23 21:04&quot;,&quot;vote_crypt&quot;:&quot;&quot;,&quot;floor&quot;:30,&quot;type&quot;:&quot;0&quot;}}">
<a name="12850137320"></a>
<div class="d_main_section"><div class="d_author_anonym">
吧友202.99.248.*</div>
<div class="d_post_content_main ">
<div class="d_content_has_lzl ">
<div class="p_content">
<cc><div id="post_content_12850137320" class="d_post_content">lz,961528376@qq.com. 都是同道中人</div></cc><br>
</div>
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正则表达式测试1

package com.day1015.java;import com.sun.scenario.effect.impl.sw.sse.SSEBlend_SRC_OUTPeer;import javax.jws.soap.SOAPBinding;
import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;public class T1 {public static void main(String[] args) throws Exception{//正则表达式String regex = "\\w+@.*.(com|cn)";Pattern pattern = Pattern.compile(regex);File file = new File("求片求片_百度贴吧.htm");FileInputStream fis = new FileInputStream(file);BufferedReader br = new BufferedReader(new InputStreamReader(fis,"GBK"));String line ;while((line=br.readLine()) != null) {if (line.contains("@")) {Matcher matcher = pattern.matcher(line);//一行中可能有多个邮箱while (matcher.find()) {String email =  matcher.group() ;//group(0)System.out.println(email);}}}br.close();}
}

测试结果1

10322391@qq.com
408309413@qq.com
gfpgymnm@163.com
krisye@qq.com
krisye@qq.com
269520876@qq.com
boyagao@qq.com
1725477284@qq.com
278437442@qq.com
286812181@qq.com
241508102@qq.com
851094531@qq.com
zhw440111@163.com
290477167@qq.com
371303485@qq.com
794629578@qq.com
383093318@qq.com
952839555@qq.com
476452930@qq.com
377600601@qq.com
546754028@qq.com&nbsp;&nbsp;  感激不尽test@qq.cn
961528376@qq.com
769378506@qq.com
305645454@qq.com
623648322@qq.com
236015295@qq.com
377600601@qq.com
546754028@qq.com
961528376@qq.com进程已结束，退出代码 0

有问题

修改表达式成 不情愿模式

 String regex = "\\w+@.*?.(com|cn)";

在*号后面加一个问号，就变成了尽可能少的匹配，问题解决。

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