用JSP实现上传文件的两种方法(2)

%>

Demo注意事项：cos.jar，uploadbean.jar，filemover.jar这几个包必须有。
必备下载地址：
UploadBean1.5：http://wcarchive.cdrom.com/pub/simtelnet/winnt/java/uploadbean1_5.zip
FileMover1.3：http://www.javazoom.net/jzServlets/uploadbean/addons/filemover1.3.zip
参考下载地址：
ChinesUpload例子：http://www.javazoom.net/jzservlets/uploadbean/addons/ChineseUpload.zip
参考了fbysss的一篇文章
2. org.apache.Struts.upload.FormFile
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


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<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html"%>
<html:html>
<html:form action="/uploadsAction.do" enctype="multipart/form-data">
<html:file property="theFile"/>
<html:submit/>
</html:form>
</html:html>

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

/**
* <p>Title:UpLoadAction</p>
* <p>Description: QRRSMMS </p>
* <p>Copyright: Copyright (c) 2004 jiahansoft</p>
* <p>Company: jiahansoft</p>
* @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;
}
}


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UpLoadForm.java

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

/**
* <p>Title:UpLoadForm</p>
* <p>Description: QRRSMMS </p>
* <p>Copyright: Copyright (c) 2004 jiahansoft</p>
* <p>Company: jiahansoft</p>
* @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"));

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