actionutils.java

用JAVA完成的BLOG采用STRUTS.HIBERNATE.SPRING.框架.直接用ECLIPSE导入就可以发布运行.调试.

package com.laoer.blog.web.action;

import javax.servlet.http.*;
import org.apache.struts.action.*;
import org.apache.struts.*;

/**
 * <p>Title: 天乙博客</p>
 *
 * <p>Description: 天乙博客系统</p>
 *
 * <p>Copyright: Copyright (c) 2005</p>
 *
 * <p>Company: Laoer.com</p>
 *
 * @author laoer[Gong Tianyi]
 * @version 1.0
 */
public class ActionUtils {

  public ActionUtils() {
  }

  public synchronized static void addErrors(HttpServletRequest request, ActionMessages errors) {
    if (errors == null) {
      //	bad programmer! *slap*
      return;
    }

    // get any existing errors from the request, or make a new one
    ActionMessages requestErrors = (ActionMessages) request.getAttribute(Globals.ERROR_KEY);
    if (requestErrors == null) {
      requestErrors = new ActionMessages();
    }
    // add incoming errors
    requestErrors.add(errors);

    // if still empty, just wipe it out from the request
    if (requestErrors.isEmpty()) {
      request.removeAttribute(Globals.ERROR_KEY);
      return;
    }

    // Save the errors
    request.setAttribute(Globals.ERROR_KEY, requestErrors);
  }

}