多文件上传

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struts,DynaActionForm,数组,文件上传

源代码 2007-11-16 14:50:23 阅读44 评论0 字号：大中小

1. JSP页,文件上传,表单中有同名的属性

<%@ page language="java" pageEncoding="GBK"%>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean"%>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html"%>
<html>
<head>
  <title>JSP for DynaActionForm form</title>
</head>
<body>
  <html:form action="/user.do" method="POST" enctype="multipart/form-data">
   userId : <html:text property="userId"/><br/>
   salary : <html:text property="salary"/><br/>
  <html:multibox property="hob" value="Computer" />Computer
  <html:multibox property="hob" value="Ball" />Ball
  <html:multibox property="hob" value="Book" />Book<br>
  <html:file property="file"></html:file>
   <html:submit/><html:cancel/>
  </html:form>
</body>
</html>

2. struts-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">

<struts-config>
<data-sources />
<form-beans >
    <form-bean type="org.apache.struts.action.DynaActionForm">
      <form-property type="java.lang.String" />
      <form-property type="java.lang.Double" />
      <form-property type="java.lang.String[]" />
      <form-property type="org.apache.struts.upload.FormFile"/>
    </form-bean>
</form-beans>
<global-exceptions />
<global-forwards />
<action-mappings >
    <action
      attribute="userForm"
      input="/user.jsp"

      path="/user"
      scope="request"
      type="com.sun.form.struts.action.UserAction">
      <forward path="/ok.jsp" />
    </action>

</action-mappings>

<message-resources parameter="com.sun.form.struts.ApplicationResources" />
</struts-config>

3. UserAction.java

/*
* Generated by MyEclipse Struts
* Template path: templates/java/JavaClass.vtl
*/
package com.sun.form.struts.action;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
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.action.DynaActionForm;
import org.apache.struts.upload.FormFile;
import org.apache.struts.util.ModuleException;

/**
* MyEclipse Struts
* Creation date: 11-02-2006
*
* XDoclet definition:
* @struts.action path="/user" input="/user.jsp" scope="request" validate="true"
* @struts.action-forward path="/ok.jsp"
*/
public class UserAction extends Action {

public ActionForward execute(ActionMapping mapping, ActionForm form,
   HttpServletRequest request, HttpServletResponse response) {
  DynaActionForm userForm = (DynaActionForm) form;// TODO Auto-generated method stub
  String userId=userForm.getString("userId");

  double salary=Double.parseDouble(userForm.get("salary").toString());

  String []phone=userForm.getStrings("hob");
  String dir=servlet.getServletContext().getRealPath("/photo");
  System.out.println(phone[0]);
  System.out.println(phone[1]);

  FormFile file=(FormFile)userForm.get("file");
  InputStream streamIn;
  try {
   streamIn = file.getInputStream();
   OutputStream streamOut=new FileOutputStream(dir+"/"+file.getFileName());
   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();
  } catch (FileNotFoundException e) {
   // TODO Auto-generated catch block
   new ModuleException("error.exception");
  } catch (IOException e) {
   // TODO Auto-generated catch block
   new ModuleException("error.exception");
  }
  file.destroy();
  //System.out.println(userId);
  return null;
}
}