struts上传文件 教程

 

LoadImgForm.java代码：

 /*
  * Generated by MyEclipse Struts
  * Template path: templates/java/JavaClass.vtl
  */
 package  com.jqqd.struts.formAction;

 import  javax.servlet.http.HttpServletRequest;
 import  org.apache.struts.action.ActionErrors;
 import  org.apache.struts.action.ActionForm;
 import  org.apache.struts.action.ActionMapping;
 import  org.apache.struts.upload.FormFile;

 /**
  * MyEclipse Struts
  * Creation date: 06-06-2008
  *
  * XDoclet definition:
  * @struts.form name="upLoadImg"
  */
 public   class  UpLoadImgForm  extends  ActionForm {
     /*
      * Generated Methods
      */

     private  FormFile file;
     /**
      *
      */
     private   static   final   long  serialVersionUID = 1L;

     /**
      * Method validate
      * @param mapping
      * @param request
      * @return ActionErrors
      */
     public  ActionErrors validate(ActionMapping mapping,
             HttpServletRequest request) {
         // TODO Auto-generated method stub
         return   null ;
     }

     /**
      * Method reset
      * @param mapping
      * @param request
      */
     public   void  reset(ActionMapping mapping, HttpServletRequest request) {
         // TODO Auto-generated method stub
     }

     public  FormFile getFile() {
         return  file;
     }

     public   void  setFile(FormFile file) {
         this .file = file;
     }


 }

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.jqqd.struts.formAction;

import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.upload.FormFile;

/** 
 * MyEclipse Struts
 * Creation date: 06-06-2008
 * 
 * XDoclet definition:
 * @struts.form name="upLoadImg"
 */
public class UpLoadImgForm extends ActionForm {
	/*
	 * Generated Methods
	 */

	private FormFile file;
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	/** 
	 * Method validate
	 * @param mapping
	 * @param request
	 * @return ActionErrors
	 */
	public ActionErrors validate(ActionMapping mapping,
			HttpServletRequest request) {
		// TODO Auto-generated method stub
		return null;
	}

	/** 
	 * Method reset
	 * @param mapping
	 * @param request
	 */
	public void reset(ActionMapping mapping, HttpServletRequest request) {
		// TODO Auto-generated method stub
	}

	public FormFile getFile() {
		return file;
	}

	public void setFile(FormFile file) {
		this.file = file;
	}
	
	
}

 UpLoadImgAction.java代码

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

 import  java.io.ByteArrayOutputStream;
 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  com.jqqd.struts.formAction.UpLoadImgForm;

 /**
  * MyEclipse Struts Creation date: 06-06-2008
  *
  * XDoclet definition:
  *
  * @struts.action path="/upLoadImg" name="upLoadImg" input="/uploadImg.jsp"
  *                scope="request" validate="true"
  * @struts.action-forward name="error" path="/error.jsp"
  * @struts.action-forward name="success" path="/success.jsp"
  */
 public   class  UpLoadImgAction  extends  Action {
     /*
      * Generated Methods
      */

     /**
      * Method execute
      *
      * @param mapping
      * @param form
      * @param request
      * @param response
      * @return ActionForward
      */
     public  ActionForward execute(ActionMapping mapping, ActionForm form,
             HttpServletRequest request, HttpServletResponse response) {
         if  (form  instanceof  UpLoadImgForm) { // 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
             }
             UpLoadImgForm upLoad = (UpLoadImgForm) form;
             FormFile formFile = upLoad.getFile();
             try  {
                 InputStream stream = formFile.getInputStream();
                 String realPath = request.getRealPath("/" + "upload" );
                 ByteArrayOutputStream baos = new  ByteArrayOutputStream();
                 OutputStream bao = new  FileOutputStream(realPath +  "/"
                         + formFile.getFileName());
                 int  bytesRead =  0 ;
                 byte [] buffer =  new   byte [ 8192 ];
                 while  ((bytesRead = stream.read(buffer,  0 ,  8192 )) != - 1 ) {
                     bao.write(buffer, 0 , bytesRead);
                 }
                 bao.flush();
                 bao.close();
                 stream.close();
             } catch  (Exception e) {
                 System.out.println(e);
             }
             return  mapping.findForward( "success" );
         }

         return  mapping.findForward( "error" );
     }
 }

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

import java.io.ByteArrayOutputStream;
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 com.jqqd.struts.formAction.UpLoadImgForm;

/**
 * MyEclipse Struts Creation date: 06-06-2008
 * 
 * XDoclet definition:
 * 
 * @struts.action path="/upLoadImg" name="upLoadImg" input="/uploadImg.jsp"
 *                scope="request" validate="true"
 * @struts.action-forward name="error" path="/error.jsp"
 * @struts.action-forward name="success" path="/success.jsp"
 */
public class UpLoadImgAction extends Action {
	/*
	 * Generated Methods
	 */

	/**
	 * Method execute
	 * 
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		if (form instanceof UpLoadImgForm) {// 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
			}
			UpLoadImgForm upLoad = (UpLoadImgForm) form;
			FormFile formFile = upLoad.getFile();
			try {
				InputStream stream = formFile.getInputStream();
				String realPath = request.getRealPath("/"+"upload");
				ByteArrayOutputStream baos = new ByteArrayOutputStream();
				OutputStream bao = new FileOutputStream(realPath + "/"
						+ formFile.getFileName());
				int bytesRead = 0;
				byte[] buffer = new byte[8192];
				while ((bytesRead = stream.read(buffer, 0, 8192)) != -1) {
					bao.write(buffer, 0, bytesRead);
				}
				bao.flush();
				bao.close();
				stream.close();
			} catch (Exception e) {
				System.out.println(e);
			}
			return mapping.findForward("success");
		}

		return mapping.findForward("error");
	}
}

 

struts-config.xml代码：

 <? 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   name = "upLoadImg"   type = "com.jqqd.struts.formAction.UpLoadImgForm"   />

   </ form-beans >

   < global-exceptions   />
   < global-forwards   />
   < action-mappings   >
         < action
       attribute = "upLoadImg"
       validate = "false"
       name = "upLoadImg"
       path = "/upLoadImg"
       scope = "request"
       type = "com.jqqd.struts.action.UpLoadImgAction" >
       < forward   name = "error"   path = "/error.jsp"   />
       < forward   name = "success"   path = "/success.jsp"   />
     </ action >


   </ action-mappings >

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

<?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 name="upLoadImg" type="com.jqqd.struts.formAction.UpLoadImgForm" />
       
  </form-beans>

  <global-exceptions />
  <global-forwards />
  <action-mappings >
        <action
      attribute="upLoadImg"
      validate="false"
      name="upLoadImg"
      path="/upLoadImg"
      scope="request"
      type="com.jqqd.struts.action.UpLoadImgAction">
      <forward name="error" path="/error.jsp" />
      <forward name="success" path="/success.jsp" />
    </action>
    
    
  </action-mappings>

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

 uploadImg.jsp文件的代码：

 < %@ page  language = "java"   pageEncoding = "GB2312" % >
 < %@ taglib  uri = "http://struts.apache.org/tags-html"   prefix = "html"  % >
 < html >
   < head >
     < title > uploadImg.do </ title >
     < link   type = "text/css"   rel = "stylesheet"   href = "css/upload.css"   />
   </ head >
   < body >
   < html:form   action = "upLoadImg.do"   enctype = "multipart/form-data" >
   < div   id = "uploadD" >
   < div   id = "uploadTitD" > 图片上传 </ div >
   < div   id = "uploadConD" >
   < html:file   property = "file" > </ html:file > < br /> < br />
   < html:submit > </ html:submit > < html:reset > </ html:reset > </ div >
   </ div >
  </ html:form >
   </ body >

 </ html >

<%@ page language="java" pageEncoding="GB2312"%>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<html>
  <head>
    <title>uploadImg.do</title>
    <link type="text/css" rel="stylesheet" href="../../css/upload.css" />
  </head>
  <body>
  <html:form action="upLoadImg.do" enctype="multipart/form-data">
  <div id="uploadD">
  <div id="uploadTitD">图片上传</div>
  <div id="uploadConD">
  <html:file property="file"></html:file><br/><br/>
  <html:submit></html:submit><html:reset></html:reset></div>
  </div>
 </html:form>  
  </body>
  
</html>

 

 base.css代码：

 html,body{margin:0px;border:0px; background-color:#333333; text-align:center; font-size:12px; color:#FFFFFF; }
 body img,body div{border:0px; margin-left:auto; margin-right:auto;}

html,body{margin:0px;border:0px; background-color:#333333; text-align:center; font-size:12px; color:#FFFFFF; }
body img,body div{border:0px; margin-left:auto; margin-right:auto;}

 upload.css代码：

 

Html代码

 @import url(base.css);
 #uploadD{width:600px; height:500px; border:1px solid #FFFFFF; margin-top:50px;}
 #uploadTitD,#uploadConD{width:600px; height:30px; border:0px; background-color:#999999; line-height:2.5em; height:2.5em;}
 #uploadConD{background-color:#666666;}

 

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