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@@ -15,6 +15,7 @@ import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import java.util.stream.Stream;
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+import org.apache.commons.lang3.StringEscapeUtils;
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import org.apache.commons.lang3.StringUtils;
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import org.dom4j.Attribute;
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import org.dom4j.Document;
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@@ -275,6 +276,95 @@ public final class CommonUtils {
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BigDecimal formatNumber = new BigDecimal(number);
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return formatNumber.setScale(2, RoundingMode.HALF_UP).doubleValue();
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}
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+
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+ public static String repairHtmlStr(String htmlStr)throws Exception{
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+ htmlStr = htmlStr.trim();
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+ if(htmlStr.toLowerCase().contains("<!doctype html ")){
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+ int index1 = htmlStr.toLowerCase().indexOf("<!doctype html ");
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+ int index2 = htmlStr.indexOf('>',index1 + 1);
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+ htmlStr = htmlStr.substring(0, index1) + htmlStr.substring(index2 + 1);
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+ }
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+ while(htmlStr.toLowerCase().contains("<br ")){
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+ int index1 = htmlStr.toLowerCase().indexOf("<br ");
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+ int index2 = htmlStr.toLowerCase().indexOf(">",index1 + 1);
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+ htmlStr = htmlStr.substring(0, index1) + "<br/>" + htmlStr.substring(index2 + 1);
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+ }
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+ while(htmlStr.toLowerCase().endsWith("<br>") || htmlStr.toLowerCase().endsWith("<br/>")){
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+ if(htmlStr.toLowerCase().endsWith("<br>")){
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+ htmlStr = htmlStr.substring(0, htmlStr.length()-"<br>".length());
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+ }else if(htmlStr.toLowerCase().endsWith("<br/>")){
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+ htmlStr = htmlStr.substring(0, htmlStr.length()-"<br/>".length());
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+ }
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+ }
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+ htmlStr = htmlStr.replace("<br>", "<br/>").replace("<BR>", "<br/>");
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+
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+ {//补全META标签
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+ int imgIndex = indexOfRegex(htmlStr,"<((meta)|(META)) ");
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+ while(imgIndex > 0){
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+ int flag = htmlStr.indexOf(">", imgIndex);
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+ if(htmlStr.charAt(flag - 1) != '/'){
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+ htmlStr = htmlStr.substring(0,flag) + "/" + htmlStr.substring(flag);
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+ }
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+ imgIndex = indexOfRegex(htmlStr,"<((meta)|(META)) ",flag);
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+ }
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+ }
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+
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+ {//补全img标签
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+ int imgIndex = indexOfRegex(htmlStr,"<((img)|(IMG)) ");
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+ while(imgIndex > 0){
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+ int flag = htmlStr.indexOf(">", imgIndex);
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+ if(htmlStr.charAt(flag - 1) != '/'){
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+ htmlStr = htmlStr.substring(0,flag) + "/" + htmlStr.substring(flag);
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+ }
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+ imgIndex = indexOfRegex(htmlStr,"<((img)|(IMG)) ",flag);
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+ }
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+ }
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+ //添加body标签
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+ if(!htmlStr.toLowerCase().contains("<body")){
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+ htmlStr = "<body>"+htmlStr+"</body>";
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+ }
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+ return new String(htmlStr.getBytes("UTF-8"));
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+ }
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+
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+ /**
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+ * 从指定的位置开始查找第一个匹配正则表达式的字符串的位置
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+ * @param str
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+ * @param regex 正则表达式
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+ * @param fromIndex 指定的起始位置
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+ * @return
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+ */
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+ public static int indexOfRegex(String str,String regex,int fromIndex){
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+ int index = indexOfRegex(str.substring(fromIndex),regex);
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+ if(index < 0){
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+ return -1;
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+ }
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+ return fromIndex + index;
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+ }
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+
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+ /**
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+ * 查找第一个匹配正则表达式的字符串的位置
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+ * @param str
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+ * @param regex 正则表达式
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+ * @return
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+ */
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+ public static int indexOfRegex(String str,String regex){
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+ Pattern p = Pattern.compile(regex);
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+ Matcher m = p.matcher(str);
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+ if(m.find()){
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+ return m.start();
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+ }else{
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+ return -1;
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+ }
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+ }
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+
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+ public static String formatHtml(String htmlStr)throws Exception{
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+ if(StringUtils.isEmpty(htmlStr)){
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+ return "";
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+ }
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+ htmlStr = repairHtmlStr(htmlStr);
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+ htmlStr = StringEscapeUtils.unescapeHtml4(htmlStr);
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+ return htmlStr;
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+ }
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public static void main(String[] args) {
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