form表单中不需要写action的路径，需要给form表单一个唯一的id，将你要提交的信息的表单中的标签name="action中的javabean对象.javabean属性"。给button按钮添加一个onclick()点击事件，并实现该点击事件，在该onclick()方法中通过ajax将form表单中的数据提交给action层

 

JSP页面中的代码：  1             
     
       2                 
       3                 
      
       4                 
      
        5                     
       要修改的班级： 6                     
        7                         --请选择班级-- 8                         软件一班 9                         软件二班10                     11                 
      
12                 
      学生姓名：13                 
      14                  
      
       15                      
       学生详细信息：16                      
       17                  
      
18 19                  
      
       20                       
       更新21                    
      
22             
     
23             

 

action层中的代码：  1 @Controller 2 @Scope("prototype") 3 // 控制层，多例模式 4 public class DangerAction extends ActionSupport { 5      6     private Student student; 7     public void setStudent(Student student){ 8         this.student = student; 9     }10     public Student getStudent(){11         return this.student;12     }13     14     @Resource15     private StudentService studentService;16     public StudentService getStudentService() {17         return studentService;18     }19     public void setStudentService(StudentService studentService) {20         this.studentService = studentService;21     }22     public String updateStudent throws Exception{23         24         boolean flag = studentService.update(student);25         HttpServletResponse response = ServletActionContext.getResponse();26         27 　　　　　//通过json对象将修改反馈信息响应给jsp28         JSONObject json = new JSONObject();29         if (flag) {30             System.out.println(flag);31             json.put("result", "修改成功");32         } else {33             System.out.println(flag);34             json.put("result", "修改失败");35         }36         System.out.println(json.toString());37         response.setContentType("text/html;charset=UTF-8");38         response.getWriter().write(json.toString());39         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40     }41 }

 

 

javabean代码: 1 public class Student{ 2     private int stuid; 3     private int className; 4     private int name; 5     private String studentMsg; 6     public int getStuid() { 7         return stuid; 8     } 9     public void setStuid(int stuid) {10         this.stuid = stuid;11     }12     public int getClassName() {13         return className;14     }15     public void setClassName(int className) {16         this.className = className;17     }18     public int getName() {19         return name;20     }21     public void setName(int name) {22         this.name = name;23     }24     public String getStudentMsg() {25         return studentMsg;26     }27     public void setStudentMsg(String studentMsg) {28         this.studentMsg = studentMsg;29     }30     31 }