基于struts2+hibernate4的学生管理系统

package stuinfo.action; import java.util.List; import javax.swing.JOptionPane; import com.opensymphony.xwork2.ActionSupport; import stuinfo.model.*; import stuinfo.dao.StudentDao; import stuinfo.model.Student; /** * 前端传给 struts.xml,然后通过struts.xml找到对应name中的类的getter and setter方法 * 通过getter and setter获取到了前端的参数，然后调用方法将数据传给dao进行保存到数据库当中（形参穿到实参） * @author Administrator * */ public class AddAction extends ActionSupport{ private static final long serialVersionUID=1; private String id; private String stuname; private String sex; private float Weight; private String studynum; private int age; public String getId() { return id; } public void setId(String id) { this.id = id; } public String getStuname() { return stuname; } public void setStuname(String stuname) { this.stuname = stuname; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } public float getWeight() { return Weight; } public void setWeight(float weight) { Weight = weight; } public String getStudynum() { return studynum; } public void setStudynum(String studynum) { this.studynum = studynum; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } /** * 判断用户输入信息正确性 * @throws Exception */ public void validate(Student stu) throws Exception{ if(stu.getStuname()==""||stu.getStuname()==null){ System.out.println(stu.getStuname()+"学生姓名不能为空"); addFieldError("name","姓名不允许为空!"); } if(stu.getWeight()<=0||stu.getWeight()>=500){ System.out.println("该名同学是外星人,请核对名单重新输入"); addFieldError("weight","该名同学是外星人,请核对名单重新输入！"); } if(stu.getAge()<=0||stu.getAge()>=200){ addFieldError("age","您现在有危险！地球生物不存在这种年龄，速跑"); } } /** * 将学生信息设置为用户输入的信息 ，下面的这个写法是错误的，不能将getter and setter方法放到struts.xml中name的 * 另外的类当中，然后封装该方法到struts的name=""的类中这样是错误的不会调用到getter and setter,因为前段跟后台的交互 * 就只做到了struts.xml跟sturtus.xml 中name=""的类，其他的跟前段无任何数据的交流 。只能放在name=""后面的类中， * 然后在该类中添加method方法 * @return */ /*public Student info(){ Student info = new Student(); info.setId(stu.getId()); info.setStuname(stu.getStuname()); info.setAge(stu.getAge()); info.setWeight(stu.getWeight()); info.setStudynum(stu.getStudynum()); info.setSex(stu.getSex()); stuDao.Student return info; }*/ /**info方法是往数据库里面添加数据 * 通过getter and setter获取前端的参数 * 定义一个空的student对象info，将对info进行设置，最后将info传回给到addstu(Student stu) 进行判断 * @return */ public Student info(){ Student info = new Student(); info.setStuname(this.getStuname()); info.setSex(this.getSex()); info.setAge(this.getAge()); info.setWeight(this.getWeight()); info.setStudynum(this.getStudynum()); try { this.validate(info); } catch (Exception e) { e.printStackTrace(); } return info; } /** * */ /*public Student info(){ Student stu = new Student(); stu.setStuname(this.getStuname()); stu.setSex(this.getSex()); stu.setAge(this.getAge()); stu.setWeight(this.getWeight()); stu.setStudynum(this.getStudynum()); if(stu.getStuname()==""||stu.getStuname()==null){ System.out.println(stu.getStuname()+"学生姓名不能为空"); addFieldError("name","姓名不允许为空!"); alert("name","姓名不允许为空!"); return false; } else if(stu.getWeight()<=0||stu.getWeight()>=500){ System.out.println("该名同学是外星人,请核对名单重新输入"); addFieldError("weight","该名同学是外星人,请核对名单重新输入！"); alert("weight","该名同学是外星人,请核对名单重新输入！"); return false; } else if(stu.getAge()<=0||stu.getAge()>=200){ addFieldError("age","您现在有危险！地球生物不存在这种年龄，速跑");. alert("age","您现在有危险！地球生物不存在这种年龄，速跑"); return false } else{ return true; } return stu; }另一种验证info学生对象方法*/ /** * 保存数据，判断是否已经将数据保存 * @return */ public String add(){ StudentDao dao = new StudentDao(); boolean save = dao.student(info());//由于数据保存Dao中使用的是boolean型，所以这里也使用boolean型 //这里的这个info()是将上面的student封装的student对象传递到dao中,进行保存，跟dao中定义的info1无关 if(save){//save是boolean型，默认是true，即等价于if(save=true) return SUCCESS; }else{ return ERROR; } } /** * 打印输出信息 * @param mess */ public void message(String mess){ int type=JOptionPane.YES_NO_OPTION; String title = "提示信息"; JOptionPane.showMessageDialog(null, mess, title, type); } }