springMVC在jsp传对象到后台

==============实体entity=======================

package com.jb.pub.entity;

import java.io.Serializable;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.ManyToOne;

import com.jb.tool.Savebackground;

/**
 * 用户
 */
@Entity
public class Pubuser implements Serializable {
 private static final long serialVersionUID = 8235691405047796440L;

private String aguid;

public String getAguid() {
  return aguid;
 }

public void setAguid(String aguid) {
  this.aguid = aguid;
 }

}

=============action===================

package com.jb.pub.controller;

import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;

import com.jb.pub.entity.Pubbm;
import com.jb.pub.entity.Pubjob;
import com.jb.pub.entity.Pubuser;
import com.jb.pub.services.PubuserServices;
import com.jb.tool.JTool;
import com.jb.tool.JToolType;

@Controller
@RequestMapping("index")
public class PubuserAction {
 @Autowired
 public PubuserServices pub;

@RequestMapping("mgAdd")
 public String saveUser(Pubuser pubuser,HttpServletRequest request){//Pubuser pubuser一定要设置为参数
  try {   
   pub.savUser(pubuser);//添加的方法
   
  } catch (Exception e) {
  e.printStackTrace();
  
  }finally{
   return "PubUser_gl";
  }
 }

===============jsp===========================

<form action="index/mgAdd.do" method="post" id="frmadd">
     <input type="text" name="aguid"/><！--注意这里必须和实体名称一致-->

</form>