EL调用Java方法_动力节点Java学院整理

 package com.bjpowernode.filter; public class HtmlFilter {  public static String filter(String message) {   if (message == null)    return (null);   char content[] = new char[message.length()];   message.getChars(0, message.length(), content, 0);   StringBuilder result = new StringBuilder(content.length + 50);   for (int i = 0; i < content.length; i++) {    switch (content[i]) {    case '<':     result.append("&lt;");     break;    case '>':     result.append("&gt;");     break;    case '&':     result.append("&amp;");     break;    case '"':     result.append("&quot;");     break;    default:     result.append(content[i]);    }   }   return (result.toString());  } }