package com.xz.cxzy.utils;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class HtmlUtil {
  private static final String regEx_script = "<script[^>]*?>[\\s\\S]*?<\\/script>"; // 定義script的正則表達式
  private static final String regEx_style = "<style[^>]*?>[\\s\\S]*?<\\/style>"; // 定義style的正則表達式
  private static final String regEx_html = "<[^>]+>"; // 定義HTML標簽的正則表達式
  private static final String regEx_space = "\\s*|\t|\r|\n";//定義空格回車換行符
  /**
   * @param htmlStr
   * @return
   * 刪除Html標簽
   */
  public static String delHTMLTag(String htmlStr) {
    Pattern p_script = Pattern.compile(regEx_script, Pattern.CASE_INSENSITIVE);
    Matcher m_script = p_script.matcher(htmlStr);
    htmlStr = m_script.replaceAll(""); // 過濾script標簽
    Pattern p_style = Pattern.compile(regEx_style, Pattern.CASE_INSENSITIVE);
    Matcher m_style = p_style.matcher(htmlStr);
    htmlStr = m_style.replaceAll(""); // 過濾style標簽
    Pattern p_html = Pattern.compile(regEx_html, Pattern.CASE_INSENSITIVE);
    Matcher m_html = p_html.matcher(htmlStr);
    htmlStr = m_html.replaceAll(""); // 過濾html標簽
    Pattern p_space = Pattern.compile(regEx_space, Pattern.CASE_INSENSITIVE);
    Matcher m_space = p_space.matcher(htmlStr);
    htmlStr = m_space.replaceAll(""); // 過濾空格回車標簽
    return htmlStr.trim(); // 返回文本字符串
  }
  public static String getTextFromHtml(String htmlStr){
    htmlStr = delHTMLTag(htmlStr);
    htmlStr = htmlStr.replaceAll(" ", "");
    htmlStr = htmlStr.substring(0, htmlStr.indexOf("。")+1);
    return htmlStr;
  }
  public static void main(String[] args) {
    String str = "<div style='text-align:center;'> 
<span style='font-size:14px;'> </span><span style='font-size:18px;'></span>
</div>";
    System.out.println(getTextFromHtml(str));
  }
}