通过button将form表单的数据提交到action层的实例

   
    
    
    

     要修改的班级：
     
      --请选择班级--
      软件一班
      软件二班
     
    
    学生姓名：
    
     

      学生详细信息：
      
     

     

      更新
     
   
   

@Controller
@Scope("prototype")
// 控制层，多例模式
public class DangerAction extends ActionSupport {
 
 private Student student;
 public void setStudent(Student student){
  this.student = student;
 }
 public Student getStudent(){
  return this.student;
 }
 
 @Resource
 private StudentService studentService;
 public StudentService getStudentService() {
  return studentService;
 }
 public void setStudentService(StudentService studentService) {
  this.studentService = studentService;
 }
 public String updateStudent throws Exception{
  
  boolean flag = studentService.update(student);
  HttpServletResponse respOnse= ServletActionContext.getResponse();
  
　　　　　//通过json对象将修改反馈信息响应给jsp
  JSONObject json = new JSONObject();
  if (flag) {
   System.out.println(flag);
   json.put("result", "修改成功");
  } else {
   System.out.println(flag);
   json.put("result", "修改失败");
  }
  System.out.println(json.toString());
  response.setContentType("text/html;charset=UTF-8");
  response.getWriter().write(json.toString());
  return null;//如果不需要跳转页面就写上null,如果要跳转页面就自己另外写上
 }
}

public class Student{
 private int stuid;
 private int className;
 private int name;
 private String studentMsg;
 public int getStuid() {
  return stuid;
 }
 public void setStuid(int stuid) {
  this.stuid = stuid;
 }
 public int getClassName() {
  return className;
 }
 public void setClassName(int className) {
  this.className = className;
 }
 public int getName() {
  return name;
 }
 public void setName(int name) {
  this.name = name;
 }
 public String getStudentMsg() {
  return studentMsg;
 }
 public void setStudentMsg(String studentMsg) {
  this.studentMsg = studentMsg;
 }
 
}