struts中上传文件-FormFile应用

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Struts 应用服务器 Myeclipse Eclipse XSL

今天花了点时间学习了一下struts的commons-fileupload.jar,在网上找了个例子,用MyEclipse重新开发了一个,大约用时两个小时,算是ok了!下面是系统应用的部分代码:
UploadsActionAction.java

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.1.1/xslt/JavaClass.xsl

package struts.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

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 struts.form.UploadsActionForm;
import org.apache.struts.upload.FormFile;
import java.io.*;
/** 
 * MyEclipse Struts
 * Creation date: 06-11-2006
 * 
 * XDoclet definition:
 * @struts.action path="/uploadsAction" name="uploadsActionForm" input="/form/uploadsAction.jsp" scope="request" validate="true"
 */
public class UploadsActionAction extends Action {

// --------------------------------------------------------- Instance Variables

	// --------------------------------------------------------- Methods

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
		//UploadsActionForm uploadsActionForm = (UploadsActionForm) form;
	public ActionForward execute(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {

String encoding = request.getCharacterEncoding();
if ((encoding != null) && (encoding.equalsIgnoreCase("utf-8")))
{
response.setContentType("text/html; charset=gb2312");//如果没有指定编码，编码格式为gb2312
}
UploadsActionForm theForm = (UploadsActionForm ) form;
FormFile file = theForm.getFiles();//取得上传的文件
try {
InputStream stream = file.getInputStream();//把文件读入
String filePath = request.getRealPath("/upload");//上传到指定的upload包中
ByteArrayOutputStream baos = new ByteArrayOutputStream();
OutputStream bos = new FileOutputStream(filePath + "/" +
 file.getFileName());//建立一个上传文件的输出流
//System.out.println(filePath+"/"+file.getFileName());
int bytesRead = 0;
byte[] buffer = new byte[8192];
while ( (bytesRead = stream.read(buffer, 0, 8192)) != -1) {
bos.write(buffer, 0, bytesRead);//将文件写入服务器
}
bos.close();
stream.close();
}catch(Exception e){
System.err.print(e);
}
//request.setAttribute("dat",file.getFileName());
return mapping.findForward("display");

}

}

UploadsActionForm.java

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.1.1/xslt/JavaClass.xsl

package struts.form;

import org.apache.struts.action.ActionForm;
import org.apache.struts.upload.FormFile;

/** 
 * MyEclipse Struts
 * Creation date: 06-11-2006
 * 
 * XDoclet definition:
 * @struts.form name="uploadsActionForm"
 */
public class UploadsActionForm extends ActionForm {
//public static final String ERROR_PROPERTY_MAX_LENGTH_EXCEEDED = "org.apache.struts.webapp.upload.MaxLengthExceeded";

	// --------------------------------------------------------- Instance Variables

	/** theFile property */
	protected FormFile files;

// --------------------------------------------------------- 

	/** 
	 * Returns files.
	 * @return FormFile
	 */
	public FormFile getFiles() {
return files;
	}

/** 
	 * Set the files.
	 * @param files The files to set
	 */
	public void setFiles(FormFile file) {
this.files = file;
	}

}

上传用的页面:uploadFile.jsp

<%@ page language="java"%>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html"%>

<html> 
	<head>
		<title>JSP for uploadsActionForm form</title>
	</head>
	<body>
		<html:form action="/uploadsAction" enctype="multipart/form-data"> <1>
			theFile : <html:file property="files"/><br/>
			<html:submit/><html:cancel/>
		</html:form>
	</body>
</html>
刚开始<1>处落下了"enctype="multipart/form-data" 费了我不少时间才搞定.记得要在根目录下建文件夹 否则找不到路径