『壹』 java 中如何向服务器上传图片
我们使用一些已有的组件帮助我们实现这种上传功能。
常用的上传组件：
Apache 的 Commons FileUpload
JavaZoom的UploadBean
jspSmartUpload
以下，以FileUpload为例讲解
1、在jsp端
<form id="form1" name="form1" method="post" action="servlet/fileServlet" enctype="multipart/form-data">
要注意enctype="multipart/form-data"
然后只需要放置一个file控件，并执行submit操作即可
<input name="file" type="file" size="20" >
<input type="submit" name="submit" value="提交" >
2、web端
核心代码如下：
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("UTF-8");
DiskFileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
try {
List items = upload.parseRequest(request);
Iterator itr = items.iterator();
while (itr.hasNext()) {
FileItem item = (FileItem) itr.next();
if (item.isFormField()) {
System.out.println("表单参数名:" + item.getFieldName() + "，表单参数值:" + item.getString("UTF-8"));
} else {
if (item.getName() != null && !item.getName().equals("")) {
System.out.println("上传文件的大小:" + item.getSize());
System.out.println("上传文件的类型:" + item.getContentType());
System.out.println("上传文件的名称:" + item.getName());
File tempFile = new File(item.getName());
File file = new File(sc.getRealPath("/") + savePath, tempFile.getName());
item.write(file);
request.setAttribute("upload.message", "上传文件成功！");
}else{
request.setAttribute("upload.message", "没有选择上传文件！");
}
}
}
}catch(FileUploadException e){
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
request.setAttribute("upload.message", "上传文件失败！");
}
request.getRequestDispatcher("/uploadResult.jsp").forward(request, response);
}
『贰』 java 图片上传
//1.初始化smartupload对象
SmartUpload su=new SmartUpload();
su.initialize(pageContext);
//2.定义上传文件类型
su.setAllowedFilesList("gif,jpg,doc,txt");
//3.不允许上传类型
su.setDeniedFilesList("jsp,asp,html,exe,bat");
//4.设置字符编码、
su.setCharset("UTF-8");
//5.设置的单个上传最大限制
su.setMaxFileSize(5*1024*1024);
//6.总共上传限制
su.setTotalMaxFileSize(20*1024*1024);
//7.上传
su.upload();
//su.getFiles().getCount() 获取上传数
File file=su.getFiles().getFile(0);
String filename=file.getFileName();
System.out.print(filename);
String filepath="upload\\";
filepath+=file.getFileName();
file.saveAs(filepath,SmartUpload.SAVE_VIRTUAL);
『叁』 Java 关于图片上传的功能
上传图片 type 类型 file form标签 多个属性 到服务器上 的时候 是3个东西 一个是文件 一个是文件名 一个是文件类型 做处理 io 到 对应路径 浏览时候 拿路径 设置 img 尺寸，
img 点击事件 变大 改变
网上搜索下狠多
『肆』 怎么用Java实现图片上传
下面这是servlet的内容：
package demo;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
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.ProgressListener;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
public class DemoServlet extends HttpServlet {
private static final String UPLOAD_DIRECTORY = "upload";
private static final int MEMORY_THRESHOLD = 1024 * 1024 * 3; // 3MB
private static final int MAX_FILE_SIZE = 1024 * 1024 * 40; // 40MB
private static final int MAX_REQUEST_SIZE = 1024 * 1024 * 50; // 50MB
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
DiskFileItemFactory factory=new DiskFileItemFactory();
ServletFileUpload sfu=new ServletFileUpload(factory);
sfu.setHeaderEncoding("UTF-8");
sfu.setProgressListener(new ProgressListener() {
public void update(long pBytesRead, long pContentLength, int pItems) {
System.out.println("文件大小为："+pContentLength+",当前已处理："+pBytesRead);
}
});
//判断提交上来的数据是否是上传表单的数据
if(!ServletFileUpload.isMultipartContent(request)){
PrintWriter writer= response.getWriter();
writer.println("Error:表单必须包含 enctype=multipart/form-data");
writer.flush();
return;
}
factory.setSizeThreshold(MEMORY_THRESHOLD);
//设置临时储存目录
factory.setRepository(new File(System.getProperty("java.io.tmpdir")));
//设置最大文件上传值
sfu.setFileSizeMax(MAX_FILE_SIZE);
//设置最大请求值（包含文件和表单数据）
sfu.setSizeMax(MAX_REQUEST_SIZE);
String uploadpath=getServletContext().getRealPath("./")+ File.separator+UPLOAD_DIRECTORY;
File file=new File(uploadpath);
if(!file.exists()){
file.mkdir();
}
try {
List<FileItem> formItems = sfu.parseRequest(request);
if(formItems!=null&&formItems.size()>0){
for(FileItem item:formItems){
if(!item.isFormField()){
String fileName=new File(item.getName()).getName();
String filePath=uploadpath+File.separator+fileName;
File storeFile=new File(filePath);
System.out.println(filePath);
item.write(storeFile);
request.setAttribute("message", "文件上传成功！");
}
}
}
} catch (Exception e) {
request.setAttribute("message", "错误信息："+e.getMessage());
}
getServletContext().getRequestDispatcher("/demo.jsp").forward(request, response);
}
}
下面是jsp的内容，jsp放到webapp下，如果想放到WEB-INF下就把servlet里转发的路径改一下：
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="demo.do" enctype="multipart/form-data" method="post">
<input type="file" name="file1" />
<%
String message = (String) request.getAttribute("message");
%>
<%=message%>
<input type="submit" value="提交"/>
</form>
</body>
</html>
这段代码可以实现普通的文件上传，有大小限制，上传普通的图片肯定没问题，别的一些小的文件也能传
『伍』 java怎样上传图片(写个例子谢谢);
我有一段上传图片的代码，并且可以根据实际，按月或按天等，生成存放图片的文件夹
首先在JSP上放一个FILE的标签这些我都不说了，你也一定明白，我直接把处理过程给你发过去
我把其中存到数据库中的内容删除了，你改一下就能用
/**
*
* 上传图片
* @param servlet
* @param request
* @param response
* @return
* @throws Exception
*/
//这里我是同步上传的，你随意
public synchronized String importPic(HttpServlet servlet, HttpServletRequest request,HttpServletResponse response) throws Exception {
SimpleDate()Format formatDate() = new SimpleDate()Format("yyyyMM");
Date nowtime=new Date();
String formatnowtime=formatDate.format(nowtime);
File root = new File(request.getRealPath("/")+"uploadfile/images/"+formatnowtime+"/"); //应保证在根目录中有此目录的存在 如果没有，下面则上创建新的文件夹
if(!root.isDirectory())
{
System.out.println("创建新文件夹成功"+formatnowtime);
root.mkdir();
}
int returnflag = 0;
SmartUpload mySmartUpload =new SmartUpload();
int file_size_max=1024000;
String ext="";
String url="uploadfile/images/"+formatnowtime+"/";
// 只允许上载此类文件
try{
// 初始化
mySmartUpload.initialize(servlet.getServletConfig(),request,response);
mySmartUpload.setAllowedFilesList("jpg,gif,bmp,jpeg,png,JPG");
// 上载文件
mySmartUpload.upload();
} catch (Exception e){
response.sendRedirect()//返回页面
}
com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(0);
if (myFile.isMissing()){ //没有选择图片做提示！
returnflag = 3;
}else{
String myFileName=myFile.getFileName(); //取得上载的文件的文件名
ext= myFile.getFileExt(); //取得后缀名
if(ext.equals("jpg")||ext.equals("gif")||ext.equals("bmp")||ext.equals("jpeg")||ext.equals("png")||ext.equals("JPG")){ //jpeg,png不能上传!)
int file_size=myFile.getSize(); //取得文件的大小
String saveurl="";
if(file_size<file_size_max){
try{
//我上面说到，把操作数据库的代友删除了，这里就应该是判断，你的图片是不是已经存在了，存在要怎么处理，不存在要怎么处了，就是你的事了 }
//更改文件名，取得当前上传时间的毫秒数值
Calendar calendar = Calendar.getInstance();
//String filename = String.valueOf(calendar.getTimeInMillis());
String did = contractBean.getMaxSeq("MULTIMEDIA_SEQ");
String filename = did;
String flag = "0";
String path = request.getRealPath("/")+url;
String ename = myFile.getFileExt();
//.toLowerCase()转换大小写
saveurl=request.getRealPath("/")+url;
saveurl+=filename+"."+ext; //保存路径
myFile.saveAs(saveurl,mySmartUpload.SAVE_PHYSICAL);
//将图片信息插入到数据库中
// ------上传完成，开始生成缩略图-----
java.io.File file = new java.io.File(saveurl); //读入刚才上传的文件
String newurl=request.getRealPath("/")+url+filename+"_min."+ext; //新的缩略图保存地址
Image src = javax.imageio.ImageIO.read(file); //构造Image对象
float tagsize=200;
int old_w=src.getWidth(null);
int old_h=src.getHeight(null);
int new_w=0;
int new_h=0;
int tempsize;
float tempdouble;
if(old_w>old_h){
tempdouble=old_w/tagsize;
}else{
tempdouble=old_h/tagsize;
}
// new_w=Math.round(old_w/tempdouble);
// new_h=Math.round(old_h/tempdouble);//计算新图长宽
new_w=150;
new_h=110;//计算新图长宽
BufferedImage tag = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(src,0,0,new_w,new_h,null); //绘制缩小后的图
FileOutputStream newimage=new FileOutputStream(newurl); //输出到文件流
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(newimage);
encoder.encode(tag); //近JPEG编码
newimage.close();
returnflag = 1;
}else{
returnflag = 0;
System.out.println("('上传文件大小不能超过"+(file_size_max/1000)+"K');");
}
}else{
returnflag = 2;
}
}
response.sendRedirect();
return "11";
}
『陆』 Java中如何图片异步上传
在java中要实现异步上传要提前做好准备，对于文件上传，浏览器在上传的过程中是将文件以流的形式提交到服务器端的，如果直接使用Servlet获取上传文件的输入流然后再解析里面的请求参数是比较麻烦，所以一般选择采用apache的开源工具common-fileupload这个文件上传组件。
这个common-fileupload上传组件的jar包可以去apache官网上面下载，也可以在struts的lib文件夹下面找到，struts上传的功能就是基于这个实现的。
common-fileupload是依赖于common-io这个包的，所以还需要下载这个包。剩下的就是js文件的导入了，我导入了以下文件：
<script type="text/javascript" src="lib/Js/jquery.js"></script>
<script ltype="text/javascript" src="/js/ajaxfileupload.js"></script>
在页面中的写法：
div class="controls"><span class="btn green fileinput-button"><i class="icon-plus icon-white"></i>
<span>上传照片</span>
<input id="fileToUpload" name="myfiles" type="file" onchange="upload()" title="上传" /></span>
</div>function upload(){
$.ajaxFileUpload
(
{
url:'<%=basePath%>sysperson/uploadpic',
secureuri:false,
fileElementId:'fileToUpload',
dataType: 'text',
success: function (data, status)
{
document.all.mypic.src="<%=basePath%>uploads/" + data;
document.all.picpath.value = data;
}, error : function(data, status, e) {
alert(e);
}
});
}
『柒』 java上传图片
/**
*
*/
package net.hlj.chOA.action;
import java.io.File;
import java.io.UnsupportedEncodingException;
import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.hlj.chOA..DangAnDao;
import net.hlj.chOA..LogDao;
import net.hlj.chOA..ZiYuanDao;
import net.hlj.chOA.model.DangAn;
import net.hlj.chOA.model.User;
import net.hlj.chOA.model.ZiYuan;
import net.hlj.chOA.util.GetId;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
/**
* @author lcy
*
*/
public class ZiYuanAction extends DispatchAction {
public ActionForward addZiYuan(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
String title = "";
String fileupload="";
SimpleDateFormat fmt = new SimpleDateFormat("yyMMddhhssmmSSS");
Date now = new Date();
String date = fmt.format(now);
String filePath = request.getSession().getServletContext().getRealPath(
"/");
String uploadPath = filePath + "upload\\uploadZiYuan\\";
String tempPath = filePath + "upload\\uploadZiYuan\\" + "uploadTemp";
String suffix = null;
if (!new File(uploadPath).isDirectory()) {
new File(uploadPath).mkdirs();
}
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setSizeThreshold(4194304);// 设置初始化内存，如果上传的文件超过该大小，将不保存到内存，而且硬盘中(单位：byte)
File fileTemp = new File(tempPath);// 建立临时目录
fileTemp.mkdir();
factory.setRepository(fileTemp);
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setSizeMax(4194304);// 设置客户端最大上传，-1为无限大（单位：byte）
try {
List<FileItem> items = upload.parseRequest(request);
Iterator<FileItem> i = items.iterator();
String[] rightType = {".gif", ".jpeg", ".doc", ".xls",
".pdf", ".txt", ".rar" };
while (i.hasNext()) {
FileItem fi = (FileItem) i.next();
if (fi.isFormField()) {
try {
if (fi.getFieldName().equals("title")) {
title = fi.getString("UTF-8");
}
} catch (UnsupportedEncodingException e) {
log.error(e.getMessage(), e);
}
} else {
String fileName = fi.getName();
int l = fileName.length();
if (!fileName.equals("")) {
int pos = fileName.lastIndexOf(".");
// suffix = fileName.substring(l - 4, l);
suffix = fileName.substring(pos, l);
boolean result = false;
String ext = fileName.substring(fileName
.lastIndexOf("."));
for (int j = 0; j < rightType.length; j++) {
if (ext.toLowerCase().equals(rightType[j])) {
result = true;
break;
}
}
if (!result) {
request.setAttribute("error", "上传文件类型有误！");
return mapping.findForward("addZiyuan");
}
// if (!suffix.equalsIgnoreCase(".jpg") &&
// !suffix.equalsIgnoreCase(".gif")
// && !suffix.equalsIgnoreCase(".png") &&
// !suffix.equalsIgnoreCase(".bmp")) {
// request.setAttribute("message", "上传文件类型有误！");
// return mapping.findForward("danganList");
// }
if (fileName != null) {
File savedFile = new File(uploadPath, date + suffix);
try {
fi.write(savedFile);
fileupload = "upload/uploadZiYuan/" + date
+ suffix;
} catch (Exception e) {
log.error(e.getMessage(), e);
}
}
}
}
}
} catch (FileUploadException e) {
log.error(e.getMessage(), e);
}
ZiYuan zy=new ZiYuan();
zy.setTitle(title);
zy.setUpload(fileupload);
ZiYuanDao zyDao=new ZiYuanDao();
try {
zyDao.addZiYuan(zy, this.servlet.getServletContext());
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
LogDao lDao=new LogDao();
//删除操做添加日志 isDel 0是增加，1是删除，2是修改,3是审批
User user1 =(User)request.getSession().getAttribute("userBean");
String ip=request.getLocalAddr();
int id=GetId.getId("ziyuan", this.servlet.getServletContext());
try {
lDao.addLogMe("ziyuan", id , ip, user1.getName(), user1.getId(), 0, this.servlet.getServletContext());
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return mapping.findForward("ziyuanList");
}
public ActionForward deleteZiYuan(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
String[] ids= request.getParameterValues("id");
ZiYuanDao zyDao=new ZiYuanDao();
LogDao lDao=new LogDao();
for(int i=0;i<ids.length;i++){
try {
zyDao.deleteZiYuan(Integer.parseInt(ids[i]), this.servlet.getServletContext());
} catch (NumberFormatException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
User user =(User)request.getSession().getAttribute("userBean");
String ip=request.getLocalAddr();
try {
lDao.addLogMe("tbl_users",Integer.parseInt(ids[i]), ip, user.getName(), user.getId(), 1, this.servlet.getServletContext());
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return mapping.findForward("ziyuanList");
}
public ActionForward updateZiYuan(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) throws NumberFormatException, SQLException {
String id="";
String title = "";
String fileupload="";
SimpleDateFormat fmt = new SimpleDateFormat("yyMMddhhssmmSSS");
Date now = new Date();
String date = fmt.format(now);
String filePath = request.getSession().getServletContext().getRealPath(
"/");
String uploadPath = filePath + "upload\\uploadZiYuan\\";
String tempPath = filePath + "upload\\uploadZiYuan\\" + "uploadTemp";
String suffix = null;
if (!new File(uploadPath).isDirectory()) {
new File(uploadPath).mkdirs();
}
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setSizeThreshold(4194304);// 设置初始化内存，如果上传的文件超过该大小，将不保存到内存，而且硬盘中(单位：byte)
File fileTemp = new File(tempPath);// 建立临时目录
fileTemp.mkdir();
factory.setRepository(fileTemp);
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setSizeMax(4194304);// 设置客户端最大上传，-1为无限大（单位：byte）
try {
List<FileItem> items = upload.parseRequest(request);
Iterator<FileItem> i = items.iterator();
String[] rightType = {".gif", ".jpeg", ".doc", ".xls",
".pdf", ".txt", ".rar" };
while (i.hasNext()) {
FileItem fi = (FileItem) i.next();
if (fi.isFormField()) {
try {
if (fi.getFieldName().equals("title")) {
title = fi.getString("UTF-8");
}
if (fi.getFieldName().equals("id")) {
id = fi.getString("UTF-8");
}
} catch (UnsupportedEncodingException e) {
log.error(e.getMessage(), e);
}
} else {
String fileName = fi.getName();
int l = fileName.length();
if (!fileName.equals("")) {
int pos = fileName.lastIndexOf(".");
// suffix = fileName.substring(l - 4, l);
suffix = fileName.substring(pos, l);
boolean result = false;
String ext = fileName.substring(fileName
.lastIndexOf("."));
for (int j = 0; j < rightType.length; j++) {
if (ext.toLowerCase().equals(rightType[j])) {
result = true;
break;
}
}
if (!result) {
request.setAttribute("error", "上传文件类型有误！");
request.setAttribute("id", id);
return mapping.findForward("selectZiyuan");
}
// if (!suffix.equalsIgnoreCase(".jpg") &&
// !suffix.equalsIgnoreCase(".gif")
// && !suffix.equalsIgnoreCase(".png") &&
// !suffix.equalsIgnoreCase(".bmp")) {
// request.setAttribute("message", "上传文件类型有误！");
// return mapping.findForward("danganList");
// }
if (fileName != null) {
File savedFile = new File(uploadPath, date + suffix);
try {
fi.write(savedFile);
fileupload = "upload/uploadZiYuan/" + date
+ suffix;
} catch (Exception e) {
log.error(e.getMessage(), e);
}
}
}else{
//这里写如果用户没有重写添加附件则保持原来的附件
ZiYuanDao zyDao = new ZiYuanDao();
ZiYuan zy=(ZiYuan)zyDao.selectZiYuanById(Integer.parseInt(id), this.servlet.getServletContext()).get(0);
fileupload=zy.getUpload();
}
}
}
} catch (FileUploadException e) {
log.error(e.getMessage(), e);
}
ZiYuan zy=new ZiYuan();
zy.setId(Integer.parseInt(id));
zy.setTitle(title);
zy.setUpload(fileupload);
ZiYuanDao zyDao=new ZiYuanDao();
try {
zyDao.updateZiYuan(zy, this.servlet.getServletContext());
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
LogDao lDao=new LogDao();
//删除操做添加日志 isDel 0是增加，1是删除，2是修改,3是审批
User user1 =(User)request.getSession().getAttribute("userBean");
String ip=request.getLocalAddr();
try {
lDao.addLogMe("ziyuan", Integer.parseInt(id) , ip, user1.getName(), user1.getId(), 2, this.servlet.getServletContext());
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return mapping.findForward("ziyuanList");
}
}
『捌』 java实现图片上传至服务器并显示，如何做
给你段代码，是用来在ie上显示图片的（servlet）：
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String id = request.getParameter("id");
File file = new File(getServletContext().getRealPath("/")+"out"+"/"+id+".gif");
response.setCharacterEncoding("gb2312");
response.setContentType("doc");
response.setHeader("Content-Disposition", "attachment; filename=" + new String(file.getName().getBytes("gb2312"),"iso8859-1"));
System.out.println(new String(file.getName().getBytes("gb2312"),"gb2312"));
OutputStream output = null;
FileInputStream fis = null;
try
{
output = response.getOutputStream();
fis = new FileInputStream(file);
byte[] b = new byte[1024];
int i = 0;
while((i = fis.read(b))!=-1)
{
output.write(b, 0, i);
}
output.write(b, 0, b.length);
output.flush();
response.flushBuffer();
}
catch(Exception e)
{
System.out.println("Error!");
e.printStackTrace();
}
finally
{
if(fis != null)
{
fis.close();
fis = null;
}
if(output != null)
{
output.close();
output = null;
}
}
}
这个程序的功能是根据传入的文件名（id），来为浏览器返回图片流，显示在<img>标签里
标签的格式写成如下：
<img src="http://localhost:8080/app/preview?id=111 "/><br/>
显示的是111.gif这个图片
你上面的问题：
1.我觉得你的第二个办法是对的，我们也是这样做的，需要的是把数据库的记录id号传进servlet,然后读取这条记录中的路径信息，生成流以后返回就是了
关于上传文件的问题，我记得java中应该专门有个负责文件上传的类，你调用就行了，上传后存储在指定的目录里，以实体文件的形式存放
你可以参考这个：
http://blog.csdn.net/arielxp/archive/2004/09/28/119592.aspx
回复：
1.是的，在response中写入流就行了
2.是发到servlet中的，我们一般都是写成servlet,短小精悍，使用起来方便，struts应该也可以，只是我没有试过，恩，你理解的很对
『玖』 用java完成图片多张批量上传的功能，还有就是后台的应该怎么处理上传的照片。
/*
*图片上传参数
*/
private File[] images;
private String[] imagesFileName;
private String[] imagesContentType;
加get set方法
req=ServletActionContext.getRequest();
//增加商品字段到数据库
Proct proct=new Proct();
ProctCategory proctCategory=null;
ProctCategoryBiz pcb=new ProctCategoryBizImpl();
System.out.println("third is:"+third_id+"ok");
if(third_id.equals("")){
proctCategory=pcb.getCategory(Integer.parseInt(second_id));
}else{
proctCategory=pcb.getCategory(Integer.parseInt(third_id));
}
proct.setCategory(proctCategory);
proct.setName(name);
proct.setPrice(Double.valueOf(price));
proct.setStock(Integer.parseInt(stock));
//上传图片到服务器
String fileType = null;
String fileName = "";
if(pb.addProct(proct)){
for (int i = 0; i < images.length; i++) {
fileType = imagesFileName[i].substring(imagesFileName[i]
.lastIndexOf("."));
fileName = (new Date().getTime() + i + 1) + fileType;
File imageFile = new File(ServletActionContext.getServletContext()
.getRealPath("/files")
+ "/" + fileName);
(images[i], imageFile);
addImages("files/"+fileName);
System.out.println("路径"+imageFile);
}
req.setAttribute("msg", "商品添加成功！");
return "success";
}else{
req.setAttribute("msg", "商品添加失败！");
return "input";
}
『拾』 java怎么上传图片
使用Commons-FileUpload 上传文件
Struts 的文件上传
jspSmartUpload上传文件