如何使用<html:file/>标签实现将本地文件传到服务器上，谢谢了！

那怎么实现文件上传使用struts1.2
package forms;import org.apache.struts.action.ActionForm;
import org.apache.struts.upload.FormFile;public class FileUploadForm extends ActionForm {
    // Default bean constructor
    public FileUploadForm() { }    /**
     * The file that the user has uploaded
     */
    private FormFile file;
    public FormFile getFile() { return this.file; }
    public void setFile(FormFile file) { this.file = file; }    /**
     * The name of the file - only for displaying results
     */    private String fname;
    public String getFname() { return this.fname; }
    public void setFname(String fname) { this.fname = fname; }
    /**
     * The size of the file - only for displaying results
     */
    private String size;
    public String getSize() { return this.size; }
    public void setSize(String size) { this.size = size; }
}//////////////////////////////////////////////////////////////////////////////
package action;import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;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 org.apache.struts.upload.FormFile;import forms.FileUploadForm;public class FileUploadAction extends Action { public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception { String dir = servlet.getServletContext().getRealPath("/upload"); FileUploadForm hff = (FileUploadForm) form; FormFile file = hff.getFile(); if (file == null) {
return mapping.findForward("success"); } // Get the name and file size
String fname = file.getFileName();
String size = Integer.toString(file.getFileSize()) + " bytes"; InputStream streamIn = file.getInputStream();
OutputStream streamOut = new FileOutputStream(dir + "/" + fname); int bytesRead = 0;
byte[] buffer = new byte[8192];
while ((bytesRead = streamIn.read(buffer, 0, 8192)) != -1) {
streamOut.write(buffer, 0, bytesRead);
} streamOut.close();
streamIn.close();
// Populate the form bean with the results for display in the View
hff.setFname(fname);
hff.setSize(size); // Clean up our toys when done playing
file.destroy(); // Forward to default display
return mapping.findForward("success"); }}
//////////////////////////////////////////////////////////////////////////////////////
    <action   path="/HtmlFile"
              type="action.FileUploadAction"
              name="FileUploadForm"
              scope="session"
              input="/index.jsp"
              validate="false">
      <forward name="success" path="/pages/HtmlFile.jsp"/>
    </action>
////////////////////////////////////////////////////////////////////////<%@ page language="java" %>
<%@ page import="org.apache.struts.action.*" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<html:html>
<head>
<title><html:file> sample code</title>
</head>
<body bgcolor="white"><h1><html:file> sample code</h1>

<html:form action="HtmlFile.do" enctype="multipart/form-data">        Please select the file that you would like to upload:<br />
        <html:file property="file" /><br /><br />        <html:submit /></html:form><p>
<logic:notEmpty name="FileUploadForm" property="fname" >
    The file just uploaded was:<p>
    <ul>
      <li>Name =<bean:write name="FileUploadForm" property="fname" />
      <li>Size =<bean:write name="FileUploadForm" property="size" />
    </ul>
</logic:notEmpty></body>
</html:html>
配置下就行了
书上的例子，最好的jsp文件就是HtmlFile.jsp，用struts struts_blank工程改的。

调试易

如何使用<html:file/>标签实现将本地文件传到服务器上，谢谢了！

解决方案 »