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最新推荐文章于 2024-07-21 18:49:41 发布

jsjsdd

最新推荐文章于 2024-07-21 18:49:41 发布

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分类专栏： mvc

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本文介绍了一个基于Struts2框架的学生信息管理系统实现方法，包括显示所有学生信息、添加、更新及删除学生记录等功能。

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package Action;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletResponse;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

import Bean.Student;
import Service.StudentService;

public class StudentAction extends ActionSupport implements ModelDriven<Student>{

   private StudentService service;
   //set()接收jsp的form ModelDriven<Student>自动帮我们接收数据
   private Student stu=new Student();

   //set()接收参数
   //封装客户提交的一组产品ID
   private int[] checkboxid;


   public void setService(StudentService service) {
       this.service = service;
   }

   public String showAll(){
       List<Student> list=service.showAll();
       ActionContext.getContext().put("list", list);
       return "showAll";
   }
   public String cdAddPage(){
       return "enterAdd";
   }
   public String cdUpdatePage(){
       System.out.println(checkboxid[0]);
   stu=service.getStudentById(checkboxid[0]); //   .put("id",checkboxid[0]);

       return "enterUpd";
   }
   public String add(){
       service.add(stu);
       return "flush";

   }
   public String deleteStudents() throws IOException{
       for(int i=0;i<checkboxid.length;i++){
       System.out.println(checkboxid[i]);
       }
       HttpServletResponse response= ServletActionContext.getResponse();
       response.setContentType("text/html;charset=UTF-8");
          PrintWriter out= response.getWriter();
          if(service.deleteStudentsById(checkboxid)){
              out.println("<script>alert('删除数据成功!');location.href='default.jsp';</script>");
          }else{
              out.println("<script>alert('删除数据失败!');location.href='default.jsp';</script>");
          }
          out.close();
       return null;
   }
   public String doUpdateStudent() throws IOException{
       HttpServletResponse response= ServletActionContext.getResponse();
       response.setContentType("text/html;charset=UTF-8");
       PrintWriter out=response.getWriter();
//       System.out.println(stu.toString());
       if(service.updateStudent(stu)){
              out.println("<script>alert('修改数据成功!');location.href='default.jsp';</script>");
       }else{
              out.println("<script>alert('修改数据失败!');location.href='default.jsp';</script>");
       }
       out.close();
       return null;

   }
   @Override
   public Student getModel() {
       // TODO Auto-generated method stub
       return stu;
   }

   public int[] getCheckboxid() {
       return checkboxid;
   }

   public void setCheckboxid(int[] checkboxid) {
       this.checkboxid = checkboxid;
   }




}