if(StringUtils.isEmpty(text)) return "";

Author: universsky

src/main/java/com/light/saber/textrank/HtmlUtil.java

@@ -5,6 +5,7 @@
 import org.htmlparser.beans.StringBean;
 import org.htmlparser.filters.CssSelectorNodeFilter;
 import org.htmlparser.util.NodeList;
+import org.springframework.util.StringUtils;
 
 public class HtmlUtil {
 
@@ -54,6 +55,8 @@ public static String getText(String html) throws Exception {
         parser.visitAllNodesWith(bean);
         parser.reset();
         String text = bean.getStrings();
+        if(StringUtils.isEmpty(text)) return "";
+
         String reg = "[^\u4e00-\u9fa5]";
         text = text.replaceAll(reg, " ");
         return text;

src/main/java/com/light/saber/textrank/TextRankKeyword.java

@@ -88,6 +88,7 @@ public String getKeyword(String title, String content) {
         for (int i = 0; i < nKeyword; ++i) {
             result += list.get(i).getKey() + ';';
         }
+        System.out.print(result);
         return result;
     }