Struts中上传文件的总结 - Enjoy yourself,and don't care about others' thinking!

Struts中上传文件的总结

先在struts-config.xml里面声明一个DynaActionForm,在做一个关联的Action

<form-bean name="uploadForm" type="org.apache.struts.action.DynaActionForm" dynamic="true">

<form-property name="filename" type="java.lang.String"/>

<form-property name="uploadfile" type="org.apache.struts.upload.FormFile"/>

</form-bean>

<action

attribute="uploadForm"

input="/form/upload.jsp"

name="uploadForm"

path="/upload"

scope="request"

type="com.gcoresoft.struts.action.UploadAction"

Action代码如下

* Generated by MyEclipse Struts

* Template path: templates/java/JavaClass.vtl

package com.gcoresoft.struts.action;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.io.UnsupportedEncodingException;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.action.DynaActionForm;

import org.apache.struts.upload.FormFile;

/**

* MyEclipse Struts

* Creation date: 05-12-2007

* XDoclet definition:

* @struts.action path="/upload" name="Form" attribute="uploadForm" input="/form/upload.jsp" scope="request" validate="true"

public class UploadAction extends Action {

private static final Log log = LogFactory.getLog(UploadAction.class);

* Generated Methods

/**

* Method execute

* @param mapping

* @param form

* @param request

* @param response

* @return ActionForward

public ActionForward execute(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response) {

DynaActionForm uploadForm = (DynaActionForm) form;// TODO Auto-generated method stub

String filename=((String)uploadForm.get("filename")).trim();

FormFile file=(FormFile)uploadForm.get("uploadfile");

if(filename.equals("")||filename==null)

{

filename=file.getFileName();

try {

filename=new String(filename.getBytes("GBK"),"UTF-8");//编码转换

} catch (UnsupportedEncodingException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

log.debug("Filename:"+filename);

String filepath="e:\\temp\\";

log.debug("Realpath:"+filepath);

try {

InputStream in=file.getInputStream();

OutputStream out=new FileOutputStream(filepath+filename);

byte[] buffer=new byte[20000];

int n=0;

while((n=in.read(buffer))!=-1)

{

out.write(buffer, 0, n);

}

out.close();

in.close();

log.debug("Upload Successfully");

return mapping.findForward("success");

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

return mapping.findForward("failure");

}

相关的jsp文件

<%@ page language="java" pageEncoding="UTF-8"%>

<%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean"%>

<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html"%>

<html>

<head>

<title>JSP for DynaActionForm form</title>

</head>

<body>

<html:form action="/upload" enctype = "multipart/form-data">

filename : <html:text property="filename"/><html:errors property="filename"/><br/>

uploadfile : <html:file property="uploadfile"/><html:errors property="uploadfile"/><br/>

<html:submit/><html:cancel/>

</html:form>

</body>

</html>

这样基本就可以了。
还有就是在web.xml文件里面声明了一个Set Character Encoding没效果，不知道怎么回事，呆会晚上问下人看看是什么问题。

这几天查了很多资料都无法解决那个问题，很多都提示需要修改源代码，没办法，先拿这个凑合下吧。
在网上还找到一个方法就是将struts升级到1.2，formfile在1.2中解决了中文乱码这个问题，所以我直接升级到了1.2问题解决。
老bean那里也有一个方法，就是使用Jakarta 文件上传类，详细资料请参考：
http://www.blogjava.net/beansoft/archive/2007/01/05/92087.html

posted on 2007-05-12 17:20 TiGERTiAN 阅读(880) 评论(2) 编辑收藏所属分类: Java

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