有文件上传的例子吗？？

用Struts的form 实现很简单的！！！
把表单封装成form对象，在 Action里从form里面读取。
form代码：
/*
* Generated by MyEclipse Struts
* Template path: templates/java/JavaClass.vtl
*/
package com.hhaccp.hr.web.form;
import org.apache.struts.action.ActionForm;import org.apache.struts.upload.FormFile;/**
* MyEclipse Struts
* Creation date: 04-10-2010
*
* XDoclet definition:
* @struts.form name="pictureForm"
*/
public class PictureForm extends ActionForm {
/*
* Generated Methods
*/ /**
*
*/
private static final long serialVersionUID = -7396780480884393201L; /**
* Method validate
* @param mapping
* @param request
* @return ActionErrors
*/
private FormFile pictureForm; public FormFile getPictureForm() {
return pictureForm;
} public void setPictureForm(FormFile pictureForm) {
this.pictureForm = pictureForm;
}}
Action代码：
String pictureForm=request.getParameter("pictureForm");
if(pictureForm!=null){
PictureForm pic=(PictureForm) form;
byte[] file=pic.getPictureForm().getFileData();//把路径变成文件流对象
String pathName=request.getRealPath("/")+"file/head/";//创建上传路径
String picName=pic.getPictureForm().getFileName();//获取图片路径
File saveFile=new File(pathName+picName);//创建文件
OutputStream os=new FileOutputStream(saveFile);//把文件添加进文件流
os.write(file);//写入文件
os.close();//关闭文件流
humanFile.setPicture(pic.getPictureForm().getFileName());
}else{
humanFile.setPicture("dfhead.jpg");
}我的是上传图片！！！

upload.java
package action;import java.io.*;import com.opensymphony.xwork2.ActionSupport;public class upload extends ActionSupport {
 private File upload;
 private String uploadFileName; //固定的名字不能乱起
 private String uploadContentType;//固定的名字不能乱起

 public String execute() throws IOException{
 InputStream is = null;
 OutputStream os = null;
 byte buffer[] = new byte[8192];
 int count=0;
 try{
 is = new FileInputStream(upload);
 os = new FileOutputStream("d:\\java\\"+uploadFileName);
 while((count=is.read(buffer))>0){
 os.write(buffer,0,count);
 }

 }catch(Exception e){
 e.printStackTrace();
 }finally{
 os.close();
 is.close();
 }

 return SUCCESS;
 }

public File getUpload() {
return upload;
}
public void setUpload(File upload) {
this.upload = upload;
}
//public String getFileName() {
// return fileName;
//}
//public void setFileName(String fileName) {
// this.fileName = fileName;
//}
public String getUploadContentType() {
return uploadContentType;
}
public void setUploadContentType(String uploadContentType) {
this.uploadContentType = uploadContentType;
}public String getUploadFileName() {
return uploadFileName;
}public void setUploadFileName(String uploadFileName) {
this.uploadFileName = uploadFileName;
}

}upload.jsp
<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%@taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
 <head>
 <title>My JSP 'upload.jsp' starting page</title>
 </head>

 <body>
 <s:form action="upload" namespace="/" method="post" enctype ="multipart/form-data">
 <s:file name="upload" label="请输入要上传的文件"></s:file>
 <s:submit value="上传"></s:submit>
 </s:form>
 </body>
</html>
测试成功.

这里有个例子：
http://download.csdn.net/source/1574104

JAVA上传图片源代码：包含检查文件格式、大小等功能。
struts1.2上传图片源代码(包含检查文件格式、限制文件大小功能)

/****************************************************************************
*更新产品类型图片 xfc
****************************************************************************/
public ActionForward updateWproducttypePic(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)throws Exception {
WproducttypeForm wproducttypeForm = (WproducttypeForm)form;
Integer id = wproducttypeForm.getId();
if(id!=null && id!=0){
Wproducttype wproducttype = wproducttypeBiz.findWproducttypeByKey(id);
//检测是否已有图,有就首先删除原来的图片,没有则直接保存
File file = new File(request.getRealPath("/upload/img/producttype/"+wproducttype.getUuidFileName()));
if(file.exists()){
file.delete();
System.out.println("-----------已经删除原来的类图");
}
FormFile filePic = null;
Integer indexId = wproducttypeForm.getIndexId();
if(indexId == 1) filePic = wproducttypeForm.getFile1();
if(indexId == 2) filePic = wproducttypeForm.getFile2();
if(indexId == 3) filePic = wproducttypeForm.getFile3();
if(indexId == 4) filePic = wproducttypeForm.getFile4();
if(indexId == 5) filePic = wproducttypeForm.getFile5();
if(indexId == 6) filePic = wproducttypeForm.getFile6();
//这里处理图片保存
String fileName = UUIDHelper.getUUID()+"."+FileHelper.getFileSuffix(filePic.getFileName());
boolean result = false;
String filePath = request.getRealPath("/upload/img/producttype/"+fileName);
try {
FileOutputStream fileOutput = new FileOutputStream(filePath);
 fileOutput.write(filePic.getFileData());
 fileOutput.flush();
 fileOutput.close();
 result = true;
} catch (Exception e) {
e.printStackTrace();
result=false;
}
if(result){
wproducttype.setUuidFileName(fileName);
wproducttype.setFileName(filePic.getFileName());
boolean result2 = wproducttypeBiz.updateWproducttype(wproducttype);
if(result2)reportErrors(request, "更新成功!",false);
else reportErrors(request, "更新失败!",false);
}
}else{
reportErrors(request, "对不起,您要数据不存在！或者数据已丢失!",false);
}
return findWproducttypePage(mapping, form, request, response);
}

调试易

有文件上传的例子吗？？

解决方案 »