search
HomeJavajavaTutorialjava regular expression filter html tags

java regular expression filter html tags

Jun 26, 2017 am 11:12 AM
htmljavaregularexpressionfilter

import java.util.regex.Matcher;   
import java.util.regex.Pattern;   
  
/**  
 * <p>  
 * Title: HTML相关的正则表达式工具类  
 * </p>  
 * <p>  
 * Description: 包括过滤HTML标记,转换HTML标记,替换特定HTML标记  
 * </p>  
 * <p>  
 * Copyright: Copyright (c) 2006  
 * </p>  
 *   
 * @author hejian  
 * @version 1.0  
 * @createtime 2006-10-16  
 */  
  public class HtmlRegexpUtil {   private final static String regxpForHtml = "]*)>"; // 过滤所有以结尾的标签   
  private final static String regxpForImgTag = "]*)\\s*>"; // 找出IMG标签   
  private final static String regxpForImaTagSrcAttrib = "src=\"([^\"]+)\""; // 找出IMG标签的SRC属性   
  /**  
     *   
     */  public HtmlRegexpUtil() {   // TODO Auto-generated constructor stub       }   
  /**  
     *   
     * 基本功能:替换标记以正常显示  
     * <p>  
     *   
     * @param input  
     * @return String  
     */  public String replaceTag(String input) {   if (!hasSpecialChars(input)) {   return input;   
        }   
        StringBuffer filtered = new StringBuffer(input.length());   char c;   for (int i = 0; i   
     *   
     * @param input  
     * @return boolean  
     */  public boolean hasSpecialChars(String input) {   boolean flag = false;   if ((input != null) && (input.length() > 0)) {   char c;   for (int i = 0; i ':   
                    flag = true;   break;   case '"结尾的标签  
     * </p><p>  
     *   
     * @param str  
     * @return String  
     */  public static String filterHtml(String str) {   
        Pattern pattern = Pattern.compile(regxpForHtml);   
        Matcher matcher = pattern.matcher(str);   
        StringBuffer sb = new StringBuffer();   boolean result1 = matcher.find();   while (result1) {   
            matcher.appendReplacement(sb, "");   
            result1 = matcher.find();   
        }   
        matcher.appendTail(sb);   return sb.toString();   
    }   
  /**  
     *   
     * 基本功能:过滤指定标签  
     * </p><p>  
     *   
     * @param str  
     * @param tag  
     *            指定标签  
     * @return String  
     */  public static String fiterHtmlTag(String str, String tag) {   
        String regxp = "]*)\\s*>";   
        Pattern pattern = Pattern.compile(regxp);   
        Matcher matcher = pattern.matcher(str);   
        StringBuffer sb = new StringBuffer();   boolean result1 = matcher.find();   while (result1) {   
            matcher.appendReplacement(sb, "");   
            result1 = matcher.find();   
        }   
        matcher.appendTail(sb);   return sb.toString();   
    }   
  /**  
     *   
     * 基本功能:替换指定的标签  
     * </p><p>  
     *   
     * @param str  
     * @param beforeTag  
     *            要替换的标签  
     * @param tagAttrib  
     *            要替换的标签属性值  
     * @param startTag  
     *            新标签开始标记  
     * @param endTag  
     *            新标签结束标记  
     * @return String  
     * @如:替换img标签的src属性值为[img]属性值[/img]  
     */  public static String replaceHtmlTag(String str, String beforeTag,   
            String tagAttrib, String startTag, String endTag) {   
        String regxpForTag = "]*)\\s*>";   
        String regxpForTagAttrib = tagAttrib + "=\"([^\"]+)\"";   
        Pattern patternForTag = Pattern.compile(regxpForTag);   
        Pattern patternForAttrib = Pattern.compile(regxpForTagAttrib);   
        Matcher matcherForTag = patternForTag.matcher(str);   
        StringBuffer sb = new StringBuffer();   boolean result = matcherForTag.find();   while (result) {   
            StringBuffer sbreplace = new StringBuffer();   
            Matcher matcherForAttrib = patternForAttrib.matcher(matcherForTag   
                    .group(1));   if (matcherForAttrib.find()) {   
                matcherForAttrib.appendReplacement(sbreplace, startTag   + matcherForAttrib.group(1) + endTag);   
            }   
            matcherForTag.appendReplacement(sb, sbreplace.toString());   
            result = matcherForTag.find();   
        }   
        matcherForTag.appendTail(sb);   return sb.toString();   
    }   
}</p>

The above is the detailed content of java regular expression filter html tags. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
How does IntelliJ IDEA identify the port number of a Spring Boot project without outputting a log?How does IntelliJ IDEA identify the port number of a Spring Boot project without outputting a log?Apr 19, 2025 pm 11:45 PM

Start Spring using IntelliJIDEAUltimate version...

How to elegantly obtain entity class variable names to build database query conditions?How to elegantly obtain entity class variable names to build database query conditions?Apr 19, 2025 pm 11:42 PM

When using MyBatis-Plus or other ORM frameworks for database operations, it is often necessary to construct query conditions based on the attribute name of the entity class. If you manually every time...

How to use the Redis cache solution to efficiently realize the requirements of product ranking list?How to use the Redis cache solution to efficiently realize the requirements of product ranking list?Apr 19, 2025 pm 11:36 PM

How does the Redis caching solution realize the requirements of product ranking list? During the development process, we often need to deal with the requirements of rankings, such as displaying a...

How to safely convert Java objects to arrays?How to safely convert Java objects to arrays?Apr 19, 2025 pm 11:33 PM

Conversion of Java Objects and Arrays: In-depth discussion of the risks and correct methods of cast type conversion Many Java beginners will encounter the conversion of an object into an array...

How do I convert names to numbers to implement sorting and maintain consistency in groups?How do I convert names to numbers to implement sorting and maintain consistency in groups?Apr 19, 2025 pm 11:30 PM

Solutions to convert names to numbers to implement sorting In many application scenarios, users may need to sort in groups, especially in one...

E-commerce platform SKU and SPU database design: How to take into account both user-defined attributes and attributeless products?E-commerce platform SKU and SPU database design: How to take into account both user-defined attributes and attributeless products?Apr 19, 2025 pm 11:27 PM

Detailed explanation of the design of SKU and SPU tables on e-commerce platforms This article will discuss the database design issues of SKU and SPU in e-commerce platforms, especially how to deal with user-defined sales...

How to set the default run configuration list of SpringBoot projects in Idea for team members to share?How to set the default run configuration list of SpringBoot projects in Idea for team members to share?Apr 19, 2025 pm 11:24 PM

How to set the SpringBoot project default run configuration list in Idea using IntelliJ...

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

ZendStudio 13.5.1 Mac

ZendStudio 13.5.1 Mac

Powerful PHP integrated development environment

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools