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Some commonly used methods in java

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package com.gitee.cliveyuan.tools.http;

import org.springframework.web.util.HtmlUtils;

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

/**
 * html工具类
 *
 * @author clive
 * Created on 2018/07/27
 * @since 1.0
 */
public class HtmlTools extends HtmlUtils {


    public static final String DEFAULT_ENCODING = "UTF-8";

    private HtmlTools() {
    }

    public static String htmlEscape(String input) {
        return htmlEscape(input, DEFAULT_ENCODING);
    }

    public static String delHTMLTag(String htmlStr) {
        String regEx_script = "]*?>[\\s\\S]*?<\\/script>"; //定义script的正则表达式
        String regEx_style = "]*?>[\\s\\S]*?<\\/style>"; //定义style的正则表达式
        String regEx_html = "<[^>]+>"; //定义HTML标签的正则表达式

        Pattern p_script = Pattern.compile(regEx_script, Pattern.CASE_INSENSITIVE);
        Matcher m_script = p_script.matcher(htmlStr);
        htmlStr = m_script.replaceAll(""); //过滤script标签

        Pattern p_style = Pattern.compile(regEx_style, Pattern.CASE_INSENSITIVE);
        Matcher m_style = p_style.matcher(htmlStr);
        htmlStr = m_style.replaceAll(""); //过滤style标签

        Pattern p_html = Pattern.compile(regEx_html, Pattern.CASE_INSENSITIVE);
        Matcher m_html = p_html.matcher(htmlStr);
        htmlStr = m_html.replaceAll(""); //过滤html标签

        return htmlStr.trim(); //返回文本字符串
    }

}