updatestudentaction.java

这是一个用Struts+Hibernate+Tomcat5.5.9实现的一个“课程管理系统”

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.0.0/xslt/JavaClass.xsl

package struts.action;

import hibernate.HibernateUtil;
import hibernate.Student;
import hibernate.Teacher;

import java.util.Iterator;
import java.util.List;

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 struts.Constants;
import struts.form.UpdateStudentForm;

/**
 * MyEclipse Struts Creation date: 11-14-2005
 * 
 * XDoclet definition:
 * 
 * @struts.action path="/updateStudent" name="updateStudentForm"
 *                input="/form/updateStudent.jsp" scope="request"
 *                validate="true"
 */
public class UpdateStudentAction extends Action {

	// --------------------------------------------------------- Instance
	// Variables

	// --------------------------------------------------------- Methods

	/**
	 * Method execute
	 * 
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		UpdateStudentForm updateStudentForm = (UpdateStudentForm) form;

		String password="";
		String student_number="'";
		Integer age=null;
		String address="";
		String sex="";
		Integer mark=null;
		String department="";
		String username="";
		String email="";
		String telephone="";
		String name="";
	    Long id=null;
	    Long teacher_id=null;
        
	    try{
		if (updateStudentForm != null) {
			id = updateStudentForm.getId();
			student_number=updateStudentForm.getStudent_number();
			sex = new String((updateStudentForm.getSex()).getBytes("ISO-8859-1"));
			address=new String((updateStudentForm.getAddress()).getBytes("ISO-8859-1"));
			age=updateStudentForm.getAge();
			password = updateStudentForm.getPassword();
			department = new String((updateStudentForm.getDepartment()).getBytes("ISO-8859-1"));
			username = updateStudentForm.getUsername();
			email = updateStudentForm.getEmail();
			telephone = updateStudentForm.getTelephone();
			name = new String((updateStudentForm.getName()).getBytes("ISO-8859-1"));
			mark = updateStudentForm.getMark();
			teacher_id=updateStudentForm.getTeacher_id();

		}
	    }catch(Exception e){}

		try {
			List results=HibernateUtil.findStudent(new Long(id));
			Iterator it=results.iterator();
			while(it.hasNext()){
			Student student=(Student)it.next();
			student.setSex(sex);
			student.setPassword(password);
			student.setDepartment(department);
			student.setUsername(username);
			student.setEmail(email);
			student.setTelephone(telephone);
			student.setName(name);
			student.setMark(mark);
			student.setStudent_number(student_number);
			student.setAddress(address);
			student.setAge(age);
			student.setTeacher(new Teacher(teacher_id));

			HibernateUtil.update(student);
			}
		} catch (Exception e) {
			e.printStackTrace();

		}

		return (mapping.findForward(Constants.FORWARD_SUCCESS));
	}

}