com.github.xiaoyuge5201.file.HtmlUtil Maven / Gradle / Ivy

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package com.github.xiaoyuge5201.file;

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

public class HtmlUtil {
    /**
     * 標簽的正则
     */
    private String reg = "(?i)\\]*\\>";
    private Pattern pattern = Pattern.compile(reg);

    /**
     * li标签中的span元素，不能设置css，不然pdf无法识别
     */
    private String spanReg = "(?i)\\]*\\>";
    private Pattern spanPattern = Pattern.compile(spanReg);
    /**
     * li标签，不能设置css，不然pdf无法识别
     */
  /*  private String liReg = "(?i)\\]*\\>";
    private Pattern liPattern = Pattern.compile(liReg);*/
    /**
     * br标签元素，不能设置css，不然pdf无法识别
     */
    private String brReg = "(?i)\\]*\\>";
    private Pattern brPattern = Pattern.compile(brReg);
    /**
     * img标签需要闭合
     */
    private String imgReg = "(?i)\\]*\\>";
    private Pattern imgPattern = Pattern.compile(imgReg);
    /**
     * div标签元素，不能设置css，不然pdf无法识别
     */
    private String fontFamilyReg = "(?i)font-family[^\\;]*\\;";
    private Pattern fontFamilyPattern = Pattern.compile(fontFamilyReg);
    /**
     * 包含html标签
     */
    String regForHtml = "<([^>]*)>";
    Pattern htmlPattern = Pattern.compile(regForHtml);
    /**
     * 闭合
标签以及替换无效的font标签；
     * 对于导出pdf而言，如果外面设置了字体，那么在文本内容中存在font-family属性，页面不显示；
     * 原因是pdf会采用行内的样式，但是pdf对于其他字体兼容性问题，导致不显示
     * @param content
     * @return
     */
    public String dealHtmlContent(String content){
        //1. 闭合br标签，如果br标签存在样式，也去掉
        Matcher brMatcher = brPattern.matcher(content);
        if(brMatcher.find()){
            content = content.replaceAll(brReg,"
");
        }
        Matcher imgMatcher = imgPattern.matcher(content);
        if (imgMatcher.find() && !imgMatcher.group().endsWith("/>")) {
            content = content.replaceAll(imgReg, imgMatcher.group().trim().replaceAll(">", "/>"));
        }
        //去掉li标签中的样式
       /* Matcher liMatcher = liPattern.matcher(content);
        if(liMatcher.find()){
            content = content.replaceAll(liReg,"");
        }*/
        // 去除font标签
        Matcher fontMatcher = pattern.matcher(content);
        if(fontMatcher.find()){
            //System.out.println(matcher.group());
            content = content.replaceAll(reg,"").replaceAll("","");
        }
        //去除span的样式
        Matcher spanMatcher = spanPattern.matcher(content);
        if(spanMatcher.find()){
            content = content.replaceAll(spanReg,"");
        }
        //去除font-family
        Matcher fontFamilyMatcher = fontFamilyPattern.matcher(content);
        if(fontFamilyMatcher.find()){
            content = content.replaceAll(fontFamilyReg,"");
        }
        if(content.contains(""")){
            content = content.replaceAll(""","'");
        }
        if(content.contains("")){
            content = content.replaceAll("","").replaceAll("","");
        }
        return content;
    }
    /**
     * 判断字符串是否包含html标签
     * @param str 字符串
     * @return 结果
     */
    private boolean judgeStrContainsHtmlTag(String str) {
        Matcher matcher = htmlPattern.matcher(str);
        return matcher.find();
    }
}