書接上一回：
執行個體三：
資料提取
要求：從一段HTML代碼中提取出所有的email位址和< a href...>tag中的連結位址
public class HtmlTest {
public static void main(String[] args) {
String htmlText = "<html>"
+ "<a href=\"[email protected]\">163test</a>\n"
+ "<a href='[email protected]'>163news</a>\n"
+ "<a href=http://www.163.com>163lady</a>\n"
+ "<a href = http://sports.163.com>網易體育</a>\n"
+ "<a href = \"http://gz.house.163.com\">網易房産</a>\n"
+ ".leemaster@163" + "luckdog.com" + "</html>";
System.out.println("開始檢查email");
for (String email : extractEmail(htmlText)) {
System.out.println("郵箱是:" + email);
}
System.out.println("開始檢查超連結");
for (String link : extractLink(htmlText)) {
System.out.println("超連結是:" + link);
private static List<String> extractLink(String htmlText) {
List<String> result = new ArrayList<String>();
Pattern p = Pattern.compile(Regexes.HREF_LINK_REGEX);
Matcher m = p.matcher(htmlText);
while (m.find()) {
result.add(m.group());
return result;
private static List<String> extractEmail(String htmlText) {
Pattern p = Pattern.compile(Regexes.EMAIL_REGEX);
public class Regexes {
public static final String EMAIL_REGEX =
"(?i)(?<=\\b)[a-z0-9][-a-z0-9_.]+[a-z0-9]@([a-z0-9][-a-z0-9]+\\.)+[a-z]{2,4}(?=\\b)";
public static final String HREF_LINK_REGEX
= "(?i)<a\\s+href\\s*=\\s*['\"]?([^'\"\\s>]+)['\"\\s>]";
運作結果：
開始檢查email
開始檢查超連結
超連結是:<a href="[email protected]"
超連結是:<a href='[email protected]'
超連結是:<a href=http://www.163.com>
超連結是:<a href = http://sports.163.com>
超連結是:<a href = "http://gz.house.163.com"
執行個體四：
查找重複單詞
要求：查找一段文本中是否存在重複單詞，如果存在，去掉重複單詞。
public class FindWord {
String[] sentences = new String[] { "this is a normal sentence",
"Oh,my god!Duplicate word word",
"This sentence contain no duplicate word words" };
for(String sentence:sentences){
System.out.println("校驗句子:"+sentence);
if(containDupWord(sentence)){
System.out.println("Duplicate word found!!");
System.out.println("正在去除重複單詞"+removeDupWords(sentence));
System.out.println("");
private static String removeDupWords(String sentence) {
String regex = Regexes.DUP_WORD_REGEX;
return sentence.replaceAll(regex,"$1");
private static boolean containDupWord(String sentence) {
Pattern p = Pattern.compile(regex);
Matcher m = p.matcher(sentence);
if(m.find()){
return true;
}else{
return false;
public static final String DUP_WORD_REGEX
= "(?<=\\b)(\\w+)\\s+\\1(?=\\b)";
校驗句子:this is a normal sentence
校驗句子:Oh,my god!Duplicate word word
Duplicate word found!!
正在去除重複單詞Oh,my god!Duplicate word
校驗句子:This sentence contain no duplicate word words
未完待續。。。
本文轉自jooben 51CTO部落格，原文連結:http://blog.51cto.com/jooben/316592
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