当前页面: 开发资料首页 → JSP 专题 → Struts 上传问题 (急) (在线等)

Struts 上传问题 (急) (在线等)

摘要: Struts 上传问题 (急) (在线等)

我初学Struts,没做过Struts上传。
这次要做的是附件上传，上传之后把相对路径保存在数据库中，请大虾们给我点指点，或给我点源代码
全分相赠！

---

参考 http://www.matrix.org.cn/resource/article/1/1111.html

---

打不开啊

---

最近刚做完一个项目，用Struts1.1做的。从不懂，到熟练使用，都靠参考CSDN的一些文档。但是文章上讲的并不一定适合自己，所以我把我自己做的一些东西拿上来给大家看看，互相交流一下。如果您有跟好的方法，可以和我联系。
MSN:whw_dream (AT) hotmail.com

Struts的文件上传
本文用的是Struts1.1的org.apache.struts.upload.FormFile类。很方便，不用自己写。也不用写一个jsp调用jspsmartupload就可以搞定。

选择上传文件页面：selfile.jsp



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







--------------------------------------------------------------------------------
UpLoadAction.java
--------------------------------------------------------------------------------
import java.io.*;
import javax.servlet.http.*;
import org.apache.struts.action.*;
import org.apache.struts.upload.FormFile;

/**
*

Title:UpLoadAction

*

Description: QRRSMMS

*

Copyright: Copyright (c) 2004 jiahansoft

*

Company: jiahansoft

* @author wanghw
* @version 1.0
*/

public class UpLoadAction extends Action {
public ActionForward execute(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
if (form instanceof uploadsForm) {//如果form是uploadsForm
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
}
UpLoadForm theForm = (UpLoadForm ) form;
FormFile file = theForm.getTheFile();//取得上传的文件
try {
InputStream stream = file.getInputStream();//把文件读入
String filePath = request.getRealPath("/");//取当前系统路径
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");
}
return null;
}
}



--------------------------------------------------------------------------------

UpLoadForm.java

--------------------------------------------------------------------------------


import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.*;
import org.apache.struts.upload.*;

/**
*

Title:UpLoadForm

*

Description: QRRSMMS

*

Copyright: Copyright (c) 2004 jiahansoft

*

Company: jiahansoft

* @author wanghw
* @version 1.0
*/

public class UpLoadForm extends ActionForm {
public static final String ERROR_PROPERTY_MAX_LENGTH_EXCEEDED = "org.apache.struts.webapp.upload.MaxLengthExceeded";
protected FormFile theFile;
public FormFile getTheFile() {
return theFile;
}
public void setTheFile(FormFile theFile) {
this.theFile = theFile;
}
public ActionErrors validate(ActionMapping mapping, HttpServletRequest request)
{
ActionErrors errors = null;
//has the maximum length been exceeded?
Boolean maxLengthExceeded = (Boolean)
request.getAttribute(MultipartRequestHandler.ATTRIBUTE_MAX_LENGTH_EXCEEDED);
if ((maxLengthExceeded != null) && (maxLengthExceeded.booleanValue()))
{
errors = new ActionErrors();
errors.add(ERROR_PROPERTY_MAX_LENGTH_EXCEEDED, new ActionError("maxLengthExceeded"));
}
return errors;

}
}
//这是相对应的form，还有其他属性可以设置，具体可以参考struts的上传例子。




--------------------------------------------------------------------------------

struts-config.xml

--------------------------------------------------------------------------------

<?xml version="1.0" encoding="UTF-8"?>
struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">

<form-beans>
<form-bean name="uploadsForm" type="UpLoadForm" />
</form-beans>