Struts1上传文件

PanShuiHua

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Struts Apache HTML Bean JSP

//上传界面的代码：

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<html:html>
<head>
  <title>Struts上传文件</title>
</head>
<body>
  
  <html:form action="upload" enctype="multipart/form-data" method="post">
   <table>
    <tr>
     <td>
      <div>
       <html:file property="file" size="30"></html:file>
      </div>
     </td>
    </tr>
    <tr>
     <td>
      <div>
       <html:submit property="upload" value="上传"></html:submit>
      </div>
     </td>
    </tr>
   </table>
  </html:form>
</body>
</html:html>

//然后是页面对应的ActionForm
package forms;

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

public class UploadForm extends ActionForm {
private String filename;
private FormFile file;
public FormFile getFile() {
  return file;
}
public void setFile(FormFile file) {
  this.file = file;
}
public String getFilename() {
  return filename;
}
public void setFilename(String filename) {
  this.filename = filename;
}

}

//处理业务的Action

package actions;

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.UploadForm;

public class UploadAction extends Action {
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest req, HttpServletResponse res) throws Exception {
  UploadForm uf=(UploadForm)form;
  String filename=uf.getFilename();
  FormFile file=uf.getFile();
  if(file!=null){
   System.out.println("我叫"+file.getFileName());
  }
  //这里需要注意的是request.getRealPath();已经废弃，可以通过
                //下面的方法来替代
  String path=req.getSession().getServletContext().getRealPath("/");
  InputStream in=file.getInputStream();
  OutputStream out=new FileOutputStream(path+"/upload/"+file.getFileName());
  int read=0;
  byte[] buffer=new byte[1024];
  while((read=in.read(buffer,0,1024))!=-1){
   out.write(buffer, 0, read);
  }
  in.close();
  out.close();
  return mapping.findForward("uploadsuc");
}
}

//Struts-config.xml的配置
<form-beans>
  <form-bean name="uploadform" type="forms.UploadForm"></form-bean>
</form-beans>
<action path="/upload"
  type="actions.UploadAction"
  name="uploadform"
  input="/test/upload.jsp"
  scope="request"
  >
   <forward name="uploadsuc" path="/test/uploadsuc.jsp"/>
</action>

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尽可能高效的，从一个标准 url 里取出文件 ...

2011-06-01 17:08
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