imagefilter.java

java开发的一套非常好用的oa系统

package com.jivesoftware.forum.filter;

import com.jivesoftware.forum.*;
import java.util.regex.*;

/**
 * A ForumMessageFilter that replaces  to <img src=url></img>
 */

public class ImageFilter
    extends ForumMessageFilter {
  private boolean filteringSubject = false;
  private boolean filteringBody = true;

//clone\u65B9\u6CD5\uFF0C\u7528\u4E8E\u4EA7\u751F\u4E00\u4E2A\u5B9E\u4F8B
  public ForumMessageFilter clone(ForumMessage message) {
    ImageFilter filter = new ImageFilter();
    filter.filteringSubject = filteringSubject;
    filter.filteringBody = filteringBody;
    filter.message = message;
    return filter;
  }

  public String getSubject() {
    return message.getSubject();
  }

//\u83B7\u5F97\u8FC7\u6EE4\u540E\u7684body
  public String getBody() {
    return convertTags(message.getBody());
  }

  public boolean isCacheable() {
    return true;
  }

//\u6B64\u65B9\u6CD5\u7528\u4E8E\u89E3\u6790\u5C06UBB\u7684img\u8868\u8FBE\u65B9\u6CD5\u8F6C\u6362\u6210html\u6837\u5F0F\uFF0C\u4F7F\u7528regx\u5305
  public static String convertTags(String str) {
    if (str == null || str.length() == 0) {
      return str;
    }
    String patt = "(\\[img\\])([^\\[]+)(\\[/img\\])";
    Pattern p = Pattern.compile(patt);
    Matcher m = p.matcher(str);
    StringBuffer sb = new StringBuffer();
    int i = 0;
    boolean result = m.find();
    while (result) {
      i++;
      m.appendReplacement(sb, "<img src=\"" + m.group(2) + "\">");
      result = m.find();
    }
    m.appendTail(sb);
    return sb.toString();
  }

}