createcourseaction.java

使用struts+spring+JDBC 实现的学生选课管理系统

package bit.jeffy.action;

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

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import bit.jeffy.bean.CourseBean;
import bit.jeffy.entity.Course;
import bit.jeffy.service.CourseDao;

public class CreateCourseAction extends Action{

	private CourseDao coursedao;
	public ActionForward execute(ActionMapping map, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {
		// TODO 自动生成方法存根
		ActionMessages errors = new ActionMessages();
		String course_no = (String)((CourseBean)form).getCourse_no();
		String course_name = (String)((CourseBean)form).getCourse_name();
		/*course_no = new String(course_no.getBytes("ISO-8859-1"),"GB2312");
		course_name = new String(course_name.getBytes("ISO-8859-1"),"GB2312");*/
		
		if( course_no.equals("") || course_name.equals("")){
			errors.add("fail_1",new ActionMessage("CreateCourseAction.a"));
			saveErrors(request,errors);
			return (map.getInputForward());
		}
	
		Long t_id = (Long)request.getSession().getAttribute("curr_tea_id");
		if(t_id.longValue() < 0){
			errors.add("fail_2",new ActionMessage("CreateCourseAction.b"));
			saveErrors(request,errors);
			return (map.getInputForward());
		}
		
		Course c = new Course();
		c.setCourse_no(course_no);
		c.setCourse_name(course_name);
		c.setTeacher_id(t_id.longValue());
		if(coursedao.validate(c)){
			errors.add("fail_3",new ActionMessage("CreateCourseAction.c"));
			saveErrors(request,errors);
			return (map.getInputForward());
		}
		
		if(coursedao.save(c)){
			errors.add("suc_1",new ActionMessage("CreateCourseAction.d"));
			saveErrors(request,errors);
			return (map.findForward("createok"));
		}else{
			errors.add("fail_4",new ActionMessage("CreateCourseAction.e"));
			saveErrors(request,errors);
			return (map.getInputForward());
		}

	}
	public CourseDao getCoursedao() {
		return coursedao;
	}
	public void setCoursedao(CourseDao coursedao) {
		this.coursedao = coursedao;
	}

}