java正則表達(dá)式過濾html標(biāo)簽

1、importjava.util.regex.Matcher;importjava.util.regex.Pattern;/*Title:HTML相關(guān)的正則表達(dá)式工具類*Description:包括過濾HTML標(biāo)記，轉(zhuǎn)換HTML標(biāo)記，替換特定HTML標(biāo)記*Copyright:Copyright(c)2006*authorhejian*version1.0*createtime2006-10-16*/publicclassHtmlRegexpUtilprivatefinalstaticStringregxpForHtml=*);/過濾所有以開頭以結(jié)尾的標(biāo)簽privatefinalstaticStr

2、ingregxpForlmgTag=*)s*;/找出IMG標(biāo)簽privatefinalstaticStringregxpForlmaTagSrcAttrib=src=(A+);/找出IMG標(biāo)簽的SRC屬性/*/publicHtmlRegexpUtil()/TODOAuto-generatedconstructorstub/*基本功能：替換標(biāo)記以正常顯示*paraminputreturnString*/publicStringreplaceTag(Stringinput)if(!hasSpecialChars(input)returninput;StringBufferfiltered=newS

3、tringBuffer(input.length();charc;for(inti=0;i=input.length()-1;i+)c=input.charAt(i);switch(c)case:filtered.append(:filtered.append();break;f,aMil.case:filtered.append();break;case&:filtered.append(&);break;default:filtered.append(c);return(filtered.toString();/*基本功能：判斷標(biāo)記是否存在*paraminput*returnboolean

4、*/publicbooleanhasSpecialChars(Stringinput)booleanflag=false;if(input!=null)&(input.length()0)charc;for(inti=0;i:flag=true;break;case:flag=true;break;亠faIIIIcase:flag=true;break;case&:flag=true;break;returnflag;/*基本功能：過濾所有以結(jié)尾的標(biāo)簽*paramstr*returnString*/publicstaticStringfilterHtml(Stringstr)Patternpa

5、ttern=Ppile(regxpForHtml);Matchermatcher=pattern.matcher(str);StringBuffersb=newStringBuffer();booleanresult1=matcher.find();while(result1)matcher.appendReplacement(sb,);result1=matcher.find();matcher.appendTail(sb);returnsb.toString();/*基本功能：過濾指定標(biāo)簽*paramstr*paramtag指定標(biāo)簽*returnString*/publicstaticSt

6、ringfiterHtmlTag(Stringstr,Stringtag)Stringregxp=*)s*;Patternpattern=Ppile(regxp);Matchermatcher=pattern.matcher(str);StringBuffersb=newStringBuffer();booleanresult1=matcher.find();while(result1)matcher.appendReplacement(sb,);result1=matcher.find();matcher.appendTail(sb);returnsb.toString();/*基本功能：替

7、換指定的標(biāo)簽*paramstrparambeforeTag要替換的標(biāo)簽*paramtagAttrib要替換的標(biāo)簽屬性值*paramstartTag新標(biāo)簽開始標(biāo)記*paramendTag新標(biāo)簽結(jié)束標(biāo)記returnString如：替換img標(biāo)簽的src屬性值為img屬性值/img*/publicstaticStringreplaceHtmlTag(Stringstr,StringbeforeTag,StringtagAttrib,StringstartTag,StringendTag)StringregxpForTag=*)s*;StringregxpForTagAttrib=tagAttrib+

8、=(a+);PatternpatternForTag=Ppile(regxpForTag);PatternpatternForAttrib=Ppile(regxpForTagAttrib);MatchermatcherForTag=patternForTag.matcher(str);StringBuffersb=newStringBuffer();booleanresult=matcherForTag.find();while(result)只壓縮代碼對不影響StringBuffersbreplace=newStringBuffer();MatchermatcherForAttrib=patternForAttrib.matcher(matcherForTag.group(1);if(matcherForAttrib.find()matcherForAttrib.appendReplacement(sbreplace,startTag+matcherForAttrib.group(1)+endTag);ma