searchsubmit.java

velocity 资料 velocity 的一个实例

package ca.nexcel.books.actions;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.DynaActionForm;

import ca.nexcel.books.beans.Book;
import ca.nexcel.books.business.BookService;

public class SearchSubmit extends Action {

	public ActionForward execute(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response)
		throws IOException, ServletException {

		DynaActionForm searchForm = (DynaActionForm) form;
		String isbn = (String) searchForm.get("isbn");
		
        BookService bookService = new BookService();
        Book book = bookService.read(isbn.trim());

		if (null == book) {
			ActionErrors errors = new ActionErrors();
			errors.add(ActionErrors.GLOBAL_ERROR,new ActionError("message.notfound"));
			saveErrors(request, errors);
			return mapping.findForward("failure") ;
		}

		request.setAttribute("book", book);
		return mapping.findForward("success");
	}
}