hibernate文件上传详解，可以直接使用
需要先在Tomcat服务器下建立一个upload文件
package cn.jbit.auction.web; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.Iterator; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileItemFactory; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.hibernate.Hibernate; import cn.jbit.auction.biz.IAuctionBiz; import cn.jbit.auction.biz.impl.AuctionBizImpl; import cn.jbit.auction.entity.Auction; import cn.jbit.auction.util.Tool; public class AddAuctionServlet extends EncodingServlet { /** * The doGet method of the servlet. <br> * * This method is called when a form has its tag value method equals to get. * * @param request * the request send by the client to the server * @param response * the response send by the server to the client * @throws ServletException * if an error occurred * @throws IOException * if an error occurred */ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doPost(request, response); } /** * The doPost method of the servlet. <br> * * This method is called when a form has its tag value method equals to * post. * * @param request * the request send by the client to the server * @param response * the response send by the server to the client * @throws ServletException * if an error occurred * @throws IOException * if an error occurred */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { String uploadFileName = ""; // 上传的文件名 String fieldName = ""; // 表单字段元素的name属性值(name的值) System.out.println("fieldName="+fieldName); // 判断从表单中请求信息中的内容是否是multipart类型 boolean isMultipart = ServletFileUpload.isMultipartContent(request); //System.out.println("isMultipart="+isMultipart); // 上传文件的存储路径（服务器文件系统上的绝对文件路径）在tomcat下面 String uploadFilePath = request.getSession().getServletContext() .getRealPath("upload/"); //System.out.println("uploadFilePath="+uploadFilePath); //uploadFilePath=C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\auction\upload File fullFile = null; String fileType=null; Auction auction = new Auction(); if (isMultipart) { //为该请求创建一个DiskFileItemFactory对象，通过它来解析请求 FileItemFactory factory = new DiskFileItemFactory(); //System.out.println("factory="+factory); //factory=org.apache.commons.fileupload.disk.DiskFileItemFactory@1cd6b3c ServletFileUpload upload = new ServletFileUpload(factory); // System.out.println("upload="+upload); //upload=org.apache.commons.fileupload.servlet.ServletFileUpload@13b4ed0 // 解析form表单中所有文件 List<FileItem> items = upload.parseRequest(request); // System.out.println("items="+items); //items=[ //name=null, StoreLocation=C:\Program Files\Apache Software Foundation\Tomcat 7.0\temp\upload_191a43d9_1550ef75687__8000_00000014.tmp, //size=6bytes, isFormField=true, FieldName=auctionName, //name=null, StoreLocation=C:\Program Files\Apache Software Foundation\Tomcat 7.0\temp\upload_191a43d9_1550ef75687__8000_00000015.tmp, //size=5bytes, isFormField=true, FieldName=startPrice, //name=null, StoreLocation=C:\Program Files\Apache Software Foundation\Tomcat 7.0\temp\upload_191a43d9_1550ef75687__8000_00000016.tmp, //size=5bytes, isFormField=true, FieldName=upset, //name=null, StoreLocation=C:\Program Files\Apache Software Foundation\Tomcat 7.0\temp\upload_191a43d9_1550ef75687__8000_00000017.tmp, //size=19bytes, isFormField=true, FieldName=startTime, //name=null, StoreLocation=C:\Program Files\Apache Software Foundation\Tomcat 7.0\temp\upload_191a43d9_1550ef75687__8000_00000018.tmp, //size=19bytes, isFormField=true, FieldName=endTime, //name=C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\auction\upload\290578.jpg, //StoreLocation=C:\Program Files\Apache Software Foundation\Tomcat 7.0\temp\upload_191a43d9_1550ef75687__8000_00000019.tmp, //size=208079bytes, isFormField=false, FieldName=pic, //name=null, StoreLocation=C:\Program Files\Apache Software Foundation\Tomcat 7.0\temp\upload_191a43d9_1550ef75687__8000_00000020.tmp, //size=7bytes, isFormField=true, FieldName=desc] Iterator<FileItem> iter = items.iterator(); System.out.println("iter="+iter); //iter=java.util.AbstractList$Itr@b34fdc while (iter.hasNext()) { // 依次处理每个文件 FileItem item = (FileItem) iter.next(); //System.out.println("item="+item); //item= //name=null, StoreLocation=C:\Program Files\Apache Software Foundation\Tomcat 7.0\temp\upload_191a43d9_1550ef75687__8000_00000014.tmp, //size=6bytes, isFormField=true, FieldName=auctionName if (item.isFormField()) { // 普通表单字段 fieldName = item.getFieldName(); // 表单字段的name属性值 //System.out.println("item="+item); String value=item.getString("UTF-8"); //System.out.println("value="+value); // 获取表单字段的值 if (fieldName.equals("auctionName")) { auction.setAuctionname(value); } if (fieldName.equals("startPrice")) { auction.setAuctionstartprice(new Double(value)); } if (fieldName.equals("upset")) { auction.setAuctionupset(new Double(value)); } if (fieldName.equals("startTime")) { auction.setAuctionstarttime(new java.sql.Timestamp(Tool.strToDate( value, "yyyy-MM-dd HH:mm:ss").getTime()));//把long转换为Timestamp类型 //Tool.strToDate(value, "yyyy-MM-dd HH:mm:ss").getTime())先把str类型转换为date类型，然后再把date类型转换为1970年至今的毫秒数 //System.out.println("Too="+Tool.strToDate(value, "yyyy-MM-dd HH:mm:ss").getTime()); //Too=1291177800000毫秒数 } if (fieldName.equals("endTime")) { auction.setAuctionendtime(new java.sql.Timestamp(Tool.strToDate( value, "yyyy-MM-dd HH:mm:ss").getTime())); } if (fieldName.equals("desc")) { auction.setAuctiondesc(value); } } else { // 文件表单字段 String fileName = item.getName(); if (fileName != null && !fileName.equals("")) { fullFile = new File(item.getName()); System.out.println("fullFile="+fullFile); System.out.println("fullFile.getName()="+fullFile.getName()); File saveFile = new File(uploadFilePath, fullFile.getName()); item.write(saveFile); uploadFileName = fullFile.getName(); fileType=uploadFileName.substring(uploadFileName.lastIndexOf(".")+1); System.out.println("上传成功后的文件名是：" + uploadFileName); } } } } InputStream is = new FileInputStream(fullFile); byte[] byteArray = new byte[is.available()]; is.read(byteArray); is.close(); IAuctionBiz biz = new AuctionBizImpl(); //设置图片数据 auction.setAuctionpic(Hibernate.createBlob(byteArray)); //设置图片类型 auction.setAuctionpictype(fileType); biz.add(auction); response.sendRedirect("auctionList"); } catch (Exception e) { e.printStackTrace(); request.setAttribute("message", e.getMessage()); request.getRequestDispatcher("error.jsp").forward(request,response); } } /** * Initialization of the servlet. <br> * * @throws ServletException * if an error occurs */ public void init() throws ServletException { // Put your code here } }
Auction实体类的代码
package cn.jbit.auction.entity; import java.sql.Blob; import java.sql.Timestamp; import java.util.HashSet; import java.util.Set; /** * Auction entity. @author MyEclipse Persistence Tools */ public class Auction implements java.io.Serializable { // Fields private Integer auctionid; private String auctionname; private Double auctionstartprice; private Double auctionupset; private Timestamp auctionstarttime; private Timestamp auctionendtime; private Blob auctionpic; private String auctionpictype; private String auctiondesc; private Set auctionrecords = new HashSet(0); private String picName; // Constructors public String getPicName() { return picName; } public void setPicName(String picName) { this.picName = picName; } /** default constructor */ public Auction() { } /** minimal constructor */ public Auction(String auctionname, Double auctionstartprice, Double auctionupset, Timestamp auctionstarttime, Timestamp auctionendtime, Blob auctionpic, String auctionpictype) { this.auctionname = auctionname; this.auctionstartprice = auctionstartprice; this.auctionupset = auctionupset; this.auctionstarttime = auctionstarttime; this.auctionendtime = auctionendtime; this.auctionpic = auctionpic; this.auctionpictype = auctionpictype; } /** full constructor */ public Auction(String auctionname, Double auctionstartprice, Double auctionupset, Timestamp auctionstarttime, Timestamp auctionendtime, Blob auctionpic, String auctionpictype, String auctiondesc, Set auctionrecords) { this.auctionname = auctionname; this.auctionstartprice = auctionstartprice; this.auctionupset = auctionupset; this.auctionstarttime = auctionstarttime; this.auctionendtime = auctionendtime; this.auctionpic = auctionpic; this.auctionpictype = auctionpictype; this.auctiondesc = auctiondesc; this.auctionrecords = auctionrecords; } // Property accessors public Integer getAuctionid() { return this.auctionid; } public void setAuctionid(Integer auctionid) { this.auctionid = auctionid; } public String getAuctionname() { return this.auctionname; } public void setAuctionname(String auctionname) { this.auctionname = auctionname; } public Double getAuctionstartprice() { return this.auctionstartprice; } public void setAuctionstartprice(Double auctionstartprice) { this.auctionstartprice = auctionstartprice; } public Double getAuctionupset() { return this.auctionupset; } public void setAuctionupset(Double auctionupset) { this.auctionupset = auctionupset; } public Timestamp getAuctionstarttime() { return this.auctionstarttime; } public void setAuctionstarttime(Timestamp auctionstarttime) { this.auctionstarttime = auctionstarttime; } public Timestamp getAuctionendtime() { return this.auctionendtime; } public void setAuctionendtime(Timestamp auctionendtime) { this.auctionendtime = auctionendtime; } public Blob getAuctionpic() { return this.auctionpic; } public void setAuctionpic(Blob auctionpic) { this.auctionpic = auctionpic; } public String getAuctionpictype() { return this.auctionpictype; } public void setAuctionpictype(String auctionpictype) { this.auctionpictype = auctionpictype; } public String getAuctiondesc() { return this.auctiondesc; } public void setAuctiondesc(String auctiondesc) { this.auctiondesc = auctiondesc; } public Set getAuctionrecords() { return this.auctionrecords; } public void setAuctionrecords(Set auctionrecords) { this.auctionrecords = auctionrecords; } }
Auction实体类的映射文件
<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <!-- Mapping file autogenerated by MyEclipse Persistence Tools --> <hibernate-mapping> <class name="cn.jbit.auction.entity.Auction" table="AUCTION"> <id name="auctionid" type="java.lang.Integer"> <column name="AUCTIONID" precision="6" scale="0" /> <generator class="increment" /> </id> <property name="auctionname" type="java.lang.String"> <column name="AUCTIONNAME" not-null="true" /> </property> <property name="auctionstartprice" type="java.lang.Double"> <column name="AUCTIONSTARTPRICE" precision="9" not-null="true" /> </property> <property name="auctionupset" type="java.lang.Double"> <column name="AUCTIONUPSET" precision="9" not-null="true" /> </property> <property name="auctionstarttime" type="java.sql.Timestamp"> <column name="AUCTIONSTARTTIME" length="11" not-null="true" /> </property> <property name="auctionendtime" type="java.sql.Timestamp"> <column name="AUCTIONENDTIME" length="11" not-null="true" /> </property> <property name="auctionpic" type="java.sql.Blob"> <column name="AUCTIONPIC" not-null="true" /> </property> <property name="auctionpictype" type="java.lang.String"> <column name="AUCTIONPICTYPE" not-null="true" /> </property> <property name="auctiondesc" type="java.lang.String"> <column name="AUCTIONDESC" /> </property> <set name="auctionrecords" inverse="true" order-by="auctionprice desc"> <key> <column name="AUCTIONID" precision="6" scale="0" not-null="true" /> </key> <one-to-many class="cn.jbit.auction.entity.Auctionrecord" /> </set> </class> </hibernate-mapping>
jsp文件
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <link href="css/common.css" rel="stylesheet" type="text/css" /> <link href="css/style.css" rel="stylesheet" type="text/css" /> <script type="text/javascript"> function $(id){ return document.getElementById(id); } function checkAuctionName(){ if($("auctionName").value==""){ $("nameid").style.display="block"; return false; }else{ $("nameid").style.display="none"; return true; } } function checkStartPrice(){ if(($("startPrice").value=="")||(isNaN($("startPrice").value)==true)){ $("startPriceid").style.display="block"; return false; }else{ $("startPriceid").style.display="none"; return true; } } function checkUpset(){ if(($("upset").value=="")||(isNaN($("upset").value)==true)){ $("upsetid").style.display="block"; return false; }else{ $("upsetid").style.display="none"; return true; } } function checkStartTime(){ if($("startTime").value==""){ $("startTimeid").style.display="block"; return false; }else{ $("startTimeid").style.display="none"; return true; } } function checkEndTime(){ if($("endTime").value==""){ $("endTimeid").style.display="block"; return false; }else{ $("endTimeid").style.display="none"; return true; } } function checkValue(){ if((checkAuctionName()&&checkStartPrice()&&checkUpset()&&checkStartTime()&&checkEndTime())==true){ if($("pic").value==""){ $("picid").style.display="block"; return false; }else{ $("picid").style.display="none"; return true; } } return false; } function showPic(){ $("imgid").src=$("pic").value;/*考虑到安全性和兼容性问题，发布拍卖品时，图片可以不显示*/ } </script> </head> <body> <form action="addAuction" enctype="multipart/form-data" method="post" onsubmit="return checkValue()"> <div class="wrap"> <!-- main begin--> <div class="sale"> <h1 class="lf">在线拍卖系统</h1> <c:if test="${not empty sessionScope.user}"> <div class="logout right"><a href="doLogout" title="注销">注销</a></div> </c:if> <c:if test="${empty sessionScope.user}"> <div class="logout right"><a href="login.jsp" title="登录">登录</a></div> </c:if> </div> <div class="login logns produce"> <h1 class="blues">拍卖品信息</h1> <dl> <dd > <label>名称：</label> <input type="text" onblur="checkAuctionName()" name="auctionName" class="inputh lf" value="" /> <div id="nameid" class="lf red laba">名称不能为空</div> </dd> <dd> <label>起拍价：</label> <input type="text" onblur="checkStartPrice()" name="startPrice" class="inputh lf" value="" /> <div id="startPriceid" class="lf red laba">必须为数字</div> </dd> <dd> <label>底价：</label> <input type="text" name="upset" class="inputh lf" onblur="checkUpset()" value="" /> <div id="upsetid" class="lf red laba">必须为数字</div> </dd> <dd> <label>开始时间：</label> <input type="text" name="startTime" class="inputh lf" value="" onblur="checkStartTime()"/> <div id="startTimeid" class="lf red laba">格式：2010-05-05 12:30:00</div> </dd> <dd> <label>结束时间：</label> <input type="text" name="endTime" class="inputh lf" value="" onblur="checkEndTime()"/> <div id="endTimeid" class="lf red laba">格式：2010-05-06 16:30:00</div> </dd> <dd class="dds"> <label>拍卖品图片：</label> <div class="lf salebd"><img id="imgid" src="images/ad20.jpg" width="100" height="100" /></div> <input name="pic" type="file" class="offset10 lf" onchange="showPic()"/> <div id="picid" class="lf red laba">请上传图片</div> </dd> <dd class="dds"> <label>描述：</label> <textarea name="desc" cols="" rows="" class="textarea"></textarea> </dd> <dd class="hegas"> <input type="submit" value="保 存" class="spbg buttombg buttombgs buttomb f14 lf" /> <input type="reset" value="取 消" class="spbg buttombg buttombgs buttomb f14 lf" /> </dd> </dl> </div> <!-- main end--> <!-- footer begin--> </div> <!--footer end--> </form> </body> </html>
