使用Webwork 2.2.4实现文件上传

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webwork.properties相关配置如下:

webwork.locale=zh_CN

webwork.multipart.parser=jakarta

webwork.i18n.encoding = GBK

上传页面：

<%@ page language="java" contentType="text/html; charset=GB18030"

pageEncoding="GB18030"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<title>Insert title here</title>

</head>

<body>

</form>

</body>

</html>

Action:

package ch4.example1;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import javax.servlet.http.HttpServletRequest;

import com.opensymphony.webwork.interceptor.ServletRequestAware;

import com.opensymphony.xwork.ActionSupport;

/**

* @author $author

public class Upload extends ActionSupport implements ServletRequestAware{

HttpServletRequest request=null;

File doc[];

String docContentType[];

String docFileName[];

public String execute() throws Exception

{

String uploadPath=request.getSession().getServletContext().getRealPath("//WEB-INF//upload//");

for(int i=0;i<doc.length;i++){

if(doc[i]!=null){

//此处重命名文件可以采用uuid,次出仅在每个文件名前多加了变量i

FileOutputStream outputStream = new FileOutputStream(uploadPath+File.separator+i+docFileName[i]);

FileInputStream fileIn = new FileInputStream(doc[i]);

byte[] buffer = new byte[1024];

int len;

while ((len = fileIn.read(buffer)) > 0) {

outputStream.write(buffer, 0, len);

}

fileIn.close();

outputStream.close();

System.out.println(docFileName[i]+" upload success");

}

return NONE;

}

public void setServletRequest(HttpServletRequest request) {

this.request=request;

}

public File[] getDoc() {

return doc;

}

public void setDoc(File[] doc) {

this.doc = doc;

}

public String[] getDocContentType() {

return docContentType;

}

public void setDocContentType(String[] docContentType) {

this.docContentType = docContentType;

}

public String[] getDocFileName() {

return docFileName;

}

public void setDocFileName(String[] docFileName) {

this.docFileName = docFileName;

}

为了使用文件上传的特性，必须为所选择的多部份解析器(Multipartparser)包含下确的JAR文件，对于jakarta，相应的jar文件文件则是commons-fileupload.jar

webwork还有一种上传方法，就是将获得req转换成MultiPartRequestWrapper，不使用interceptor 然后进行上传

MultiPartRequestWrapper wrapper=(MultiPartRequestWrapper)request;
try{
File doc=wrapper.getFiles("doc")[0];

}