Java正则表达式替换Img标签的src属性

最近的知识库系统项目需要对上传的doc文件转为html,然后在kindeditor中编辑，由于图片显示不出来，故需要修改img的src属性/****基本功能：替换指定的标签

*@authorlinshutao

*@paramstr

*@parambeforeTag要替换的标签

*@paramtagAttrib要替换的标签属性值

*@paramstartTag新标签开始标记

*@paramendTag新标签结束标记

*@returnString

*/

publicstaticStringreplaceHtmlTag(Stringstr,StringbeforeTag,

StringtagAttrib,StringstartTag,StringendTag){

//StringregxpForTag="]*)\\s*>";

StringregxpForTag="]*)\\s*";

StringregxpForTagAttrib=tagAttrib+"=\\s*\"([^\"]+)\"";

//Pattern.CASE_INSENSITIVE忽略大小写PatternpatternForTag=Pattern.compile(regxpForTag,Pattern.CASE_INSENSITIVE);PatternpatternForAttrib=Pattern.compile(regxpForTagAttrib,Pattern.CASE_INSENSITIVE);MatchermatcherForTag=patternForTag.matcher(str);StringBuffersb=newStringBuffer();booleanresult=matcherForTag.find();//循环找出每个img标签

while(result){

StringBuffersbreplace=newStringBuffer("<img");

MatchermatcherForAttrib=patternForAttrib.matcher(matcherForTag

.group(1));

if(matcherForAttrib.find()){

matcherForAttrib.appendReplacement(sbreplace,startTag

+matcherForAttrib.group(1)+endTag);

}

matcherForAttrib.appendTail(sbreplace);

matcherForTag.appendReplacement(sb,sbreplace.toString());

result=matcherForTag.find();

}

matcherForTag.appendTail(sb);

returnsb.toString();

}