struts2+hibernate+spring项目action中无法更新跟添加数据

package com.action;

import javax.annotation.Resource;

import org.springframework.stereotype.Controller;

import com.dao.ChanpinxinxiDao;
import com.dao.KehuxinxiDao;
import com.dao.ProducttypeDao;
import com.dao.TypeDao;
import com.entity.Chanpinxinxi;
import com.entity.Kehuxinxi;
import com.entity.Producttype;
import com.entity.Type;

/**
 * 修改产品信息
 * @author think
 *
 */
@Controller
public class ToupdateproductAction {
	@Resource ChanpinxinxiDao cpxxdao;
	@Resource TypeDao typedao;
	@Resource ProducttypeDao protypedao;
	@Resource KehuxinxiDao khxxdao;
	//input
	private int id;
	private int pstate;
	private int types;
	private String pname;
	private double price;
	private String pspecs;
	
	//output
	private boolean ok=false;
	public String execute(){
		Producttype protype=new Producttype();
		Type type=new Type();
		Chanpinxinxi cpxx=new Chanpinxinxi();
		Kehuxinxi khxx=new Kehuxinxi();
		try {
			protype=protypedao.findById(types);
			type=typedao.findById(pstate);
			khxx=khxxdao.findById(1);
			cpxx=cpxxdao.findById(id);
			cpxx.setChanpinmingcheng(pname);
			cpxx.setProducttype(protype);
			cpxx.setType(type);
			cpxx.setJiage(price);
			cpxx.setGuige(pspecs);
			cpxx.setKehuxinxi(khxx);
			cpxxdao.updateCPXX(cpxx);
			ok=true;
			
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			ok=false;
		}
		return "success";
	}
	public int getPstate() {
		return pstate;
	}
	public void setPstate(int pstate) {
		this.pstate = pstate;
	}
	public int getTypes() {
		return types;
	}
	public void setTypes(int types) {
		this.types = types;
	}
	public String getPname() {
		return pname;
	}
	public void setPname(String pname) {
		this.pname = pname;
	}
	public double getPrice() {
		return price;
	}
	public void setPrice(double price) {
		this.price = price;
	}
	public String getPspecs() {
		return pspecs;
	}
	public void setPspecs(String pspecs) {
		this.pspecs = pspecs;
	}
	public boolean isOk() {
		return ok;
	}
	public void setOk(boolean ok) {
		this.ok = ok;
	}
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	
	
}

package com.dao.impl;

import java.util.ArrayList;
import java.util.List;

import javax.annotation.Resource;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import com.dao.ChanpinxinxiDao;
import com.entity.Chanpinxinxi;

@Transactional
public class ChanpinxinxiDaoImpl implements ChanpinxinxiDao{
	@Resource SessionFactory factory;
@Transactional(propagation=Propagation.REQUIRED)
	public void savaCPXX(Chanpinxinxi cpxx) throws Exception {
		factory.getCurrentSession().saveOrUpdate(cpxx);
		
	}
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-2.5.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
        ">
    <context:annotation-config />
	<context:component-scan base-package="com" />

	<aop:aspectj-autoproxy />  
	  <bean id="dataSource"

        class="com.mchange.v2.c3p0.ComboPooledDataSource"