一个很好的使用struts技术的地址簿的例子,很值得

				package addressbook.actions;
				
				import java.io.IOException;
				import java.util.Locale;
				import java.util.Properties;
				import java.util.ResourceBundle;
				import java.util.MissingResourceException;
				
				import javax.servlet.RequestDispatcher;
				import javax.servlet.ServletException;
				import javax.servlet.http.HttpServletRequest;
				import javax.servlet.http.HttpSession;
				import javax.servlet.http.HttpServletResponse;
				import org.apache.struts.action.Action;
				import org.apache.struts.action.ActionMessage;
				import org.apache.struts.action.ActionMessages;
				import org.apache.struts.action.ActionForm;
				import org.apache.struts.action.ActionForward;
				import org.apache.struts.action.ActionMapping;
				import org.apache.struts.action.ActionServlet;
				import org.apache.struts.util.MessageResources;
				import org.apache.commons.logging.Log;
				import org.apache.commons.logging.LogFactory;
				import addressbook.Constants;
				import addressbook.forms.SearchForm;
				
				/**
				 * SearchAction will take the search parameters
				 * specified by the user and create the Sql statement to be used
				 * by the appropriate forward.
				 */
				public final class SearchAction extends AbstActionBase {
				
					private Log log =
				        LogFactory.getLog(this.getClass().getName());
				
				    public ActionForward execute(ActionMapping mapping,
								 ActionForm form,
								 HttpServletRequest request,
								 HttpServletResponse response)
					throws Exception {
				
						Locale locale = getLocale(request);
						MessageResources messages = getResources(request);
				
						ActionMessages errors = new ActionMessages();
						String name = ((SearchForm) form).getName();
						String phone = ((SearchForm) form).getPhone();
						String address=((SearchForm)form).getAddress();
				
						if (!errors.isEmpty()) {
						    saveErrors(request, errors);
						    return (new ActionForward(mapping.getInput()));
						}
				
						String strSql = new String("SELECT * FROM " + Constants.TABLENAME + " WHERE ");
				
						if (!name.equals(""))
							strSql = strSql + "name LIKE '"+ name +"%' AND";
						if (!phone.equals(""))
							strSql = strSql + " phone LIKE '"+ phone +"%' AND";
						if (!address.equals(""))
							strSql = strSql + " address LIKE '"+ address +"%'";
						else
						    strSql = strSql.substring(0,strSql.length()-3);
				
					    strSql = strSql + "ORDER by ID";
					    HttpSession session = request.getSession();
					    if (log.isDebugEnabled()) {
							log.debug("SearchAction session = " + session);
							log.debug("SearchAction strSql = " + strSql);
				
						}
				
				
						session.setAttribute(Constants.SQLSTMT_KEY, strSql);
				
						return (mapping.findForward(Constants.FORWARD_SUCCESS));
				
				    }
				}