Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    /**
     * get innerHtml from href
     * 
     * <pre>
     * getHrefInnerHtml(null)                                  = ""
     * getHrefInnerHtml("")                                    = ""
     * getHrefInnerHtml("mp3")                                 = "mp3";
     * getHrefInnerHtml("&lt;a innerHtml&lt;/a&gt;")                    = "&lt;a innerHtml&lt;/a&gt;";
     * getHrefInnerHtml("&lt;a&gt;innerHtml&lt;/a&gt;")                    = "innerHtml";
     * getHrefInnerHtml("&lt;a&lt;a&gt;innerHtml&lt;/a&gt;")                    = "innerHtml";
     * getHrefInnerHtml("&lt;a href="baidu.com"&gt;innerHtml&lt;/a&gt;")               = "innerHtml";
     * getHrefInnerHtml("&lt;a href="baidu.com" title="baidu"&gt;innerHtml&lt;/a&gt;") = "innerHtml";
     * getHrefInnerHtml("   &lt;a&gt;innerHtml&lt;/a&gt;  ")                           = "innerHtml";
     * getHrefInnerHtml("&lt;a&gt;innerHtml&lt;/a&gt;&lt;/a&gt;")                      = "innerHtml";
     * getHrefInnerHtml("jack&lt;a&gt;innerHtml&lt;/a&gt;&lt;/a&gt;")                  = "innerHtml";
     * getHrefInnerHtml("&lt;a&gt;innerHtml1&lt;/a&gt;&lt;a&gt;innerHtml2&lt;/a&gt;")        = "innerHtml2";
     * </pre>
     * 
     * @param href
     * @return <ul>
     *         <li>if href is null, return ""</li>
     *         <li>if not match regx, return source</li>
     *         <li>return the last string that match regx</li>
     *         </ul>
     */
    public static String getHrefInnerHtml(String href) {
        if (isEmpty(href)) {
            return "";
        }

        String hrefReg = ".*<[\\s]*a[\\s]*.*>(.+?)<[\\s]*/a[\\s]*>.*";
        Pattern hrefPattern = Pattern.compile(hrefReg, Pattern.CASE_INSENSITIVE);
        Matcher hrefMatcher = hrefPattern.matcher(href);
        if (hrefMatcher.matches()) {
            return hrefMatcher.group(1);
        }
        return href;
    }

    public static boolean isEmpty(String str) {
        if (str == null)
            return true;
        if ("null".equals(str))
            return true;
        if ("".equals(str.trim()))
            return true;
        return false;
    }
}