数据保存问题
<%@ page language="java" contentType="text/html; charset=UTF-8"
??? pageEncoding="UTF-8"%>
<%@ page import="java.util.*" %>
<%@ include file="/common/taglibs.jsp" %>
<html>
<head>
<%@include file="/common/meta.jsp" %>
<title>供应商管理</title>
<%@include file="/common/ec.jsp" %>
</head>
<body>
<div align="center">
?? <table width="99%" style="border:1px #0099ee solid; background-color: #efefef">
????? <tr height="30">
????????? <td colspan="20" bgcolor="#0099ee" align="center">
???????????? <font color="white"><b>供应商管理</b></font>
????????? </td>
????? </tr>
??????
????? <tr height="40">
????? ?<td align= "left">
?????? ?快速查找 <select name="select">
???????? <option>列出所有供应商</option>
???????? <option>所有被禁用的供应商</option>
???????? <option>所有推荐的供应商</option>
?????? </select>导航管理:<a href="${ctx}/merchant/listMerchant.do?method=list"><img src="${ctx}/images/icons/user.jpg"/>供应商管理首页</a>|
???????? <a href="${ctx}/merchant/createMerchant.do?method=create"><img src="${ctx}/images/icons/user_add.gif"/> 添加供应商</a>
??????? </td>
??????? </tr>
??
?? </table>
</div>
<br>
<html:form action="/merchant/saveMerchant.do?method=save">
?<html:hidden property="merchantId"/>
??? <div align="center">
<table width="80%" border="0" align="center" cellpadding="0" cellspacing="0" >
?<tr>
???? <td size="30"></html:text>*</td>???
?? </tr>
?? <tr>
????? <td colspan="6">
???? <html:radio property="sort" value="生产厂家">生产厂家</html:radio>
???? <html:radio property="sort" value="销售公司">销售公司</html:radio>
???? <html:radio property="sort" value="其它">其它</html:radio></td>
??? </tr>
??? <tr>
???? <td size="30"></html:text>*</td>???
?? </tr>
??? <tr>
???? <td size="30"></html:text></td>???
?? </tr>
?? <tr>
???? <td size="30"></html:text></td>???
?? </tr>
?? <tr>
???? <td size="30"></html:text></td>???
?? </tr>
?? <tr>
???? <td size="30"></html:text></td>???
?? </tr>
??? <tr>
???? <td cols="50" rows="6" ></html:textarea></td>???
?? </tr>
?? <tr>???
??? <td colspan="30" align="center" value=" 保存 " style="border:1px">
??? <input type="reset" value=" 清空 " style="border:1px">
??? </td>
? </tr>
?</table></div>
</html:form>
</html>
这是一个页面数据
package com.systop.practice.model;
// Generated 2007-6-8 10:45:24 by Hibernate Tools 3.2.0.beta8
import java.util.Date;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import org.hibernate.annotations.GenericGenerator;
/**
?* Merchant generated by hbm2java
?*/
@SuppressWarnings("serial")
@Entity
@Table(name = "merchant")
public class Merchant implements java.io.Serializable {
?/**
? * 供应商编号
? **/?
?private int merchantId;
?/**
? * 生产厂家
? **/? ?
?private String merchantName;
?/**
? * 供应商类型
? **/? ?
?private String sort;
?/**
? * 创建日期
? **/?
?private Date buildDate;
?/**
? * 地址
? **/?
?private String address;
?/**
? * 电话
? **/?
?private Integer phone;
?/**
? * 传真
? **/?
?private Integer fax;
?/**
? * 邮箱
? **/?
?private String EMail;
?/**
? * 助记码
? **/?
?private String memoryCode;
?/**
? * 简介
? **/??
?private String introduction;
?/**
? * 得到所有的品牌
? **/?
?private Set<Trademark> trademarks = new HashSet<Trademark>(0);
?/**
? * 得到所有的采购单
? **/?
?private Set<Stock> stocks = new HashSet<Stock>(0);
?// Constructors
?/** default constructor */
?public Merchant() {
?}
?/** minimal constructor */
?public Merchant(int merchantId) {
??this.merchantId = merchantId;
?}
?/** full constructor */
?public Merchant(int merchantId, String sort, Date buildDate,
???String address, Integer phone, Integer fax, String EMail,
???String memoryCode, Set<Trademark> trademarks, Set<Stock> stocks) {
??this.merchantId = merchantId;
??this.sort = sort;
??this.buildDate = buildDate;
??this.address = address;
??this.phone = phone;
??this.fax = fax;
??this.EMail = EMail;
??this.memoryCode = memoryCode;
??this.trademarks = trademarks;
??this.stocks = stocks;
?}
?// Property accessors
?@Id
?@GeneratedValue(generator = "inc")
?@GenericGenerator(name = "inc", strategy = "increment")
?@Column(name = "MERCHANT_ID", unique = true, nullable = true)
?public Integer getMerchantId() {
??return this.merchantId;
?}
?public void setMerchantId(Integer merchantId) {
??this.merchantId = merchantId;
?}
?@Column(name = "SORT", unique = false, nullable = true,
???insertable = true, updatable = true)
?public String getSort() {
??return this.sort;
?}
?public void setSort(String sort) {
??this.sort = sort;
?}
?@Temporal(TemporalType.DATE)
?@Column(name = "BUILD_DATE", unique = false, nullable = true,
???insertable = true, updatable = true)
?public Date getBuildDate() {
??return this.buildDate;
?}
?public void setBuildDate(Date buildDate) {
??this.buildDate = buildDate;
?}
?@Column(name = "ADDRESS", unique = false, nullable = true,
???insertable = true, updatable = true)
?public String getAddress() {
??return this.address;
?}
?public void setAddress(String address) {
??this.address = address;
?}
?@Column(name = "PHONE", unique = false, nullable = true,
???insertable = true, updatable = true)
?public Integer getPhone() {
??return this.phone;
?}
?public void setPhone(Integer phone) {
??this.phone = phone;
?}
?@Column(name = "FAX", unique = false, nullable = true,
???insertable = true, updatable = true)
?public Integer getFax() {
??return this.fax;
?}
?public void setFax(Integer fax) {
??this.fax = fax;
?}
?@Column(name = "E_MAIL", unique = false, nullable = true,
???insertable = true, updatable = true)
?public String getEMail() {
??return this.EMail;
?}
?public void setEMail(String EMail) {
??this.EMail = EMail;
?}
?@Column(name = "MEMORY_CODE", unique = false, nullable = true,
???insertable = true, updatable = true)
?public String getMemoryCode() {
??return this.memoryCode;
?}
?public void setMemoryCode(String memoryCode) {
??this.memoryCode = memoryCode;
?}
?@OneToMany(cascade = { CascadeType.ALL },
???fetch = FetchType.LAZY, mappedBy = "merchant")
?public Set<Trademark> getTrademarks() {
??return this.trademarks;
?}
?public void setTrademarks(Set<Trademark> trademarks) {
??this.trademarks = trademarks;
?}
?@OneToMany(cascade = { CascadeType.ALL },
???fetch = FetchType.LAZY, mappedBy = "merchant")
?public Set<Stock> getStocks() {
??return this.stocks;
?}
?public void setStocks(Set<Stock> stocks) {
??this.stocks = stocks;
?}
?@Column(name = "MERCHANT_NAME", unique = false,
???nullable = true, insertable = true, updatable = true)
?public String getMerchantName() {
??return merchantName;
?}
?public void setMerchantName(String merchantName) {
??this.merchantName = merchantName;
?}
?/**
? * @return the introduction
? */
?@Column(name = "INTRODUCTION", unique = false,
???nullable = true, insertable = true, updatable = true)
?public String getIntroduction() {
??return introduction;
?}
?/**
? * @param introduction the introduction to set
? */
?public void setIntroduction(String introduction) {
??this.introduction = introduction;
?}
?
}
这是一个实体
?
package com.systop.practice.merchant.webapp;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.lang.StringUtils;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.hibernate.criterion.DetachedCriteria;
import com.systop.practice.core.webapp.struts.StrutsAction;
import com.systop.practice.merchant.service.MerchantManager;
import com.systop.practice.model.Merchant;
import org.hibernate.criterion.MatchMode;
import org.hibernate.criterion.Restrictions;
/**
?* Merchant的struts action，由于数据量小，所以直接使用StrutsAction，而不是
?* 使用ECPageQueryStrutsAction
?* @author ljy
?*
?*/
public class MerchantAction extends StrutsAction {
?/**
??? * 从spring中得到DeptManager
??? */
?? private MerchantManager getMerchantMgr() {
???? return (MerchantManager) getBean("merchantManager");
?? }
?? /**
??? * 列出所有生产厂家
??? */
?? public ActionForward list(ActionMapping mapping, ActionForm form,
?????? HttpServletRequest request, HttpServletResponse response) {
?? //创建一个离线条件查询
??DetachedCriteria criteria = DetachedCriteria.forClass(Merchant.class);
//??处理条件查询
???? String merchantserch = request.getParameter("merchantSerch");
???? String value = request.getParameter("matter");
???? if (StringUtils.isNotBlank(merchantserch)) {
???? ?criteria.add(Restrictions.like(merchantserch,
???? ???value, MatchMode.ANYWHERE));
???? }
??List merchants = getMerchantMgr().get(Merchant.class);
???? request.setAttribute("merchants", merchants); //把生产厂家列表放到Request中
????
???? return mapping.findForward("list");
????
?? }
?? /**
??? * 添加生产厂家前，将页面定位到merchantForm.jsp
??? * @return
??? */
?? public ActionForward create(ActionMapping mapping, ActionForm form,
?????? HttpServletRequest request, HttpServletResponse response) {
??
???? return mapping.findForward("edit");
?? }
??
?? /**
??? * 编辑生产厂家前，将页面定位到merchantForm.jsp
??? * @return
??? */
?? public ActionForward edit(ActionMapping mapping, ActionForm form,
?????? HttpServletRequest request, HttpServletResponse response) {
???? Merchant merchant = new Merchant();
???? bindEntity(form, merchant);??
???? log.debug(merchant.getMerchantId());
???? if (merchant != null && merchant.getMerchantId() != null) {
???? ?merchant = getMerchantMgr().get(Merchant.class,
???? ???merchant.getMerchantId());
???? }
???? bindForm(form, merchant);
???
???? return mapping.findForward("edit");
?? }
??
?? /**
??? * 保存生产厂家信息，包括更新和添加
??? * @return
??? */
?? public ActionForward save(ActionMapping mapping, ActionForm form,
?????? HttpServletRequest request, HttpServletResponse response) {
???? Merchant merchant = new Merchant();
???? this.bindEntity(form, merchant);
???? //将页面数据提取为merchant对象
???? getMerchantMgr().save(merchant);???
???? return mapping.findForward("success");
?? }
??
?? /**
??? * 删除生产厂家信息
??? * @return
??? */
?? public ActionForward remove(ActionMapping mapping, ActionForm form,
?????? HttpServletRequest request, HttpServletResponse response) {
???? //获得页面数据
??String []merchantIds = request.getParameterValues("selectedItems");
??????
???? if (merchantIds != null && merchantIds.length > 0) {
?????? for (int i = 0; i < merchantIds.length; i++) {
???????? if (StringUtils.isNotBlank(merchantIds[i])) {
???????? ? Merchant merchant = getMerchantMgr().get(Merchant.class ,
???????? ??? Integer.valueOf(merchantIds[i]));
???????????? if (merchant != null) {
????????????? getMerchantMgr().remove(merchant);
???????????? log.debug("Remove Merchant" + merchant.getMerchantId());
?????????? }
???????? }
?????? }
???? }
???? return mapping.findForward("success");
?? }
}
这是我的Action
?
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts-config PUBLIC
??"-//Apache Software Foundation//DTD Struts Configuration 1.2//EN"
??"http://struts.apache.org/dtds/struts-config_1_2.dtd">
<struts-config>
?<form-beans>??
??<form-bean name="merchantForm" type="org.apache.struts.validator.LazyValidatorForm"/>
?</form-beans>
?<action-mappings>
??
??<action path="/merchant/listMerchant" name="merchantForm" type="com.systop.practice.merchant.webapp.MerchantAction"
?? parameter="method" scope="request" validate="false" >
???<forward name="list" path="/pages/merchant/listMerchants.jsp"/>???
??</action>
??<action path="/merchant/saveMerchant" name="merchantForm" type="com.systop.practice.merchant.webapp.MerchantAction"
?? parameter="method" scope="request" validate="true" input="/pages/merchant/merchantForm.jsp" >
???<forward name="success" path="/merchant/listMerchant.do?method=list" redirect="true"/>
??</action>
??<action path="/merchant/editMerchant" name="merchantForm" type="com.systop.practice.merchant.webapp.MerchantAction"
?? parameter="method" scope="request" validate="false" >
???<forward name="edit" path="/pages/merchant/merchantForm.jsp"/>???
??</action>
??<action path="/merchant/createMerchant" name="merchantForm" type="com.systop.practice.merchant.webapp.MerchantAction"
?? parameter="method" scope="request" validate="false" >
???<forward name="edit" path="/pages/merchant/merchantForm.jsp"/>???
??</action>
??<action path="/merchant/removeMerchant" name="merchantForm" type="com.systop.practice.merchant.webapp.MerchantAction"
?? parameter="method" scope="request" validate="false" >
???<forward name="success" path="/merchant/listMerchant.do?method=list" redirect="true"/>??
??</action>
?</action-mappings>
</struts-config>
这是STRUTS部分
问题：只能保存添加的内容。修改完以后就作为一条新记录添加进数据库，请帮助看一下问题也在什么
地方！!!!!
1 楼 hgq0011 2007-06-19 你持久层用的是hibernate吧，你的问题应该是出在，修改的时候你没有获取到实例对象主建值。