使用正则表达式拼接富文本框
package com.goboosoft.common.utils; import org.apache.commons.lang3.StringUtils; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * Description: * * @author cy * @date 2019年04月01日 17:35 * version 1.0 */ public class HtmlUtils { /** * 替换指定标签的属性和值 * @param str 需要处理的字符串 * @param tag 标签名称 * @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 * @author huweijun * @date 2016年7月13日 下午7:15:32 */ public static String replaceHtmlTag(String str, String tag, String tagAttrib, String startTag, String endTag) { String regxpForTag = "<\\s*" + tag + "\\s+([^>]*)\\s*" ; String regxpForTagAttrib = tagAttrib + "=\\s*\"([^\"]+)\"" ; Pattern patternForTag = Pattern.compile (regxpForTag,Pattern. CASE_INSENSITIVE ); Pattern patternForAttrib = Pattern.compile (regxpForTagAttrib,Pattern. CASE_INSENSITIVE ); Matcher matcherForTag = patternForTag.matcher(str); StringBuffer sb = new StringBuffer(); boolean result = matcherForTag.find(); while (result) { StringBuffer sbreplace = new StringBuffer( "<"+tag+" "); Matcher matcherForAttrib = patternForAttrib.matcher(matcherForTag.group(1)); if (matcherForAttrib.find()) { String attributeStr = matcherForAttrib.group(1); matcherForAttrib.appendReplacement(sbreplace, startTag + attributeStr + endTag); } matcherForAttrib.appendTail(sbreplace); matcherForTag.appendReplacement(sb, sbreplace.toString()); result = matcherForTag.find(); } matcherForTag.appendTail(sb); return sb.toString(); } public static String replaceImgSrc(String content,String domain){ if(StringUtils.isBlank(content)){ return null; } String buf = "src=\"" + domain; String s = replaceHtmlTag(content, "img", "src", buf, "\""); return s; } public static void main(String[] args) { StringBuffer content = new StringBuffer(); content.append("<ul class=\"imgBox\"><li><img id=\"160424\" src=\"uploads/allimg/160424/1-160424120T1-50.jpg\" class=\"src_class\"></li>"); content.append("<li><img id=\"150628\" src=\"uploads/allimg/150628/1-15062Q12247.jpg\" class=\"src_class\"></li></ul>"); System.out.println("原始字符串为:"+content.toString()); String s = replaceImgSrc(content.toString(), "http://files.goboosoft.com/zwjm/"); System.out.println("替换后为:"+s); } }