/*** 替換html中的base64圖片數(shù)據(jù)為實際圖片* @param html* @param fileRoot 本地路徑* @param serRoot 服務(wù)器路徑* @return*/public static String replaceBase64Image(String html,String fileRoot,String serRoot){  File file = new File(fileRoot);  if(!file.exists()){//文件根目錄不存在時創(chuàng)建   new File(fileRoot).mkdirs();  }  String htmlContent = html;  Pattern pattern = Pattern.compile("//<img[^>]*src=/"data:image/[^>]*>");  Matcher matcher = pattern.matcher(html);  GUIDUtils.init();  while(matcher.find()){  //找出base64圖片元素   String str = matcher.group();   String src = ExStringUtils.substringBetween(str, "src=/"", "/"");//src="..."   String ext = ExStringUtils.defaultIfEmpty(ExStringUtils.substringBetween(str, "data:image/", ";"), "jpg");//圖片后綴   String base64ImgData = ExStringUtils.substringBetween(str, "base64,", "/"");//圖片數(shù)據(jù)   if(ExStringUtils.isNotBlank(ext)&&ExStringUtils.isNotBlank(base64ImgData)){    //data:image/gif;base64,base64編碼的gif圖片數(shù)據(jù)    //data:image/png;base64,base64編碼的png圖片數(shù)據(jù)    if("jpeg".equalsIgnoreCase(ext)){//data:image/jpeg;base64,base64編碼的jpeg圖片數(shù)據(jù)     ext = "jpg";    } else if("x-icon".equalsIgnoreCase(ext)){//data:image/x-icon;base64,base64編碼的icon圖片數(shù)據(jù)     ext = "ico";    }    String fileName = GUIDUtils.buildMd5GUID(false)+"."+ext;//待存儲的文件名    String filePath = fileRoot+File.separator+fileName;//圖片路徑    try {     convertBase64DataToImage(base64ImgData, filePath);//轉(zhuǎn)成文件     String serPath = serRoot+fileName;//服務(wù)器地址     htmlContent = htmlContent.replace(src, serPath);//替換src為服務(wù)器地址    } catch (IOException e) {     e.printStackTrace();    }   }  }  return htmlContent;}/*** 把base64圖片數(shù)據(jù)轉(zhuǎn)為本地圖片* @param base64ImgData* @param filePath* @throws IOException*/public static void convertBase64DataToImage(String base64ImgData,String filePath) throws IOException {  BASE64Decoder d = new BASE64Decoder();  byte[] bs = d.decodeBuffer(base64ImgData);  FileOutputStream os = new FileOutputStream(filePath);  os.write(bs);  os.close();}