struts2文件上传

最新推荐文章于 2025-06-20 10:13:14 发布

iteye_3224

最新推荐文章于 2025-06-20 10:13:14 发布

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文章标签： java javascript ViewUI

声明：本例是将上传的文件存放到服务器上

一：创建struts.properties文件，用来定义上传文件的总大小

struts.properties代码如下：

struts.multipart.maxSize=62914560

二：上传页面

<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%@taglib prefix="s" uri="/struts-tags"%>

<html>

    <head>

        <meta http-equiv="Content-Type" content="text/html; charset=gb2312">

        <title>上传文件</title>

 <script type="text/javascript">  
  
  //判断上传的文件是否为空
                function jiaoyan(){  
                var file1=document.getElementById("file1").value
                var file2=document.getElementById("file2").value
                
                if(file1=="" && file2==""){
                	alert("对不起，上传d文件不能为空！");
                }else{
                	document.getElementById("frm").action="<%=path%>/upload.action"; //前面path所得到的路径
                	document.getElementById("frm").submit();
                }
     
       }  
    
</script>
</head>
    <body>

    <!-- 上传文件表单定义 -->

    <s:form id="frm" id="frm" method="post" enctype="multipart/form-data">

        <tr>

    <!-- 上传文件标签定义 -->

    <td>上传文件:<s:file name="file" id="file1"></s:file></td>

    </tr>

    <tr>

    <td>再次上传文件:<s:file name="file" id="file2"></s:file></td>

    </tr>

    <tr>

    <td align="left"><input type="button" value="提交" οnclick="jiaoyan()"></td>
    </tr>

    </s:form>

    </body>

</html>

三：Action类

package com.onload;


import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;


//文件上传Action


public class photoOnload extends ActionSupport {


  //上传文件存放路径
  private final static String UPLOADDIR = "/upload";


  //上传文件集合
  private List<File> file;


  //上传文件名集合
  private List<String> fileFileName;


  //上传文件内容类型集合
  private List<String> fileContentType;


  public List<File> getFile() {
    return file;
  }


  public void setFile(List<File> file) {
    this.file = file;
  }


  public List<String> getFileFileName() {
    return fileFileName;
  }


  public void setFileFileName(List<String> fileFileName) {
    this.fileFileName = fileFileName;
  }


  public List<String> getFileContentType() {
    return fileContentType;
  }


  public void setFileContentType(List<String> fileContentType) {
    this.fileContentType = fileContentType;
  }


  public String execute() throws Exception {
    for (int i = 0; i < file.size(); i++) {
      //循环上传每个文件
      uploadFile(i);
    }
    return "success";
  }
 
  //执行上传功能
  private void uploadFile(int i) throws FileNotFoundException, IOException {
    try {
      InputStream in = new FileInputStream(file.get(i));
//      long len=file.get(i).length();
//      System.out.println("len----------------->"+len);
     
//      int len1=file.size();//得到文件上传的个数
//      System.out.println("which------------>"+len1);
     
//      if(len1==2){//如果上传的文件的个数是两个求两个文件大小的和
//      	long len2=file.get(0).length();
//      	long len3=file.get(1).length();
//      	long sum=len2+len3;
//        System.out.println("sum----------------->"+sum);
//      }
     
      String fileName=fileFileName.toString();
      int len=fileName.length();
     
      String substrFilename=fileName.substring(1,len-1);
     
      System.out.println("fileName------------>"+fileName);
      System.out.println("subStrfilename-------------->"+substrFilename);
      System.out.println("fileNameLen------------------------>"+len);
     
      String dir = ServletActionContext.getRequest().getRealPath(UPLOADDIR);
     
      System.out.println("path-------------------->"+dir);


      File uploadFile = new File(dir, this.getFileFileName().get(i));
     
      OutputStream out = new FileOutputStream(uploadFile);
     
      byte[] buffer = new byte[1024 * 1024];


      int length;


      while ((length = in.read(buffer)) > 0) {
        out.write(buffer, 0, length);
      }
      in.close();
      out.close();


    } catch (FileNotFoundException ex) {
      ex.printStackTrace();
    } catch (IOException ex) {
      ex.printStackTrace();
    }


  }


}

四.struts.xml配置文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
	<struts>
    <!-- 系统常量定义，定义上传文件字符集编码 -->

    <constant name="struts.i18n.encoding" value="gb2312"></constant>

    <!-- 系统常量定义，定义上传文件临时存放路径 -->

    <constant name="struts.multipart.saveDir" value="f:\wangzihu\"></constant>

    <!-- Action所在包定义 -->

    <package name="mypackage" extends="struts-default">

        <!-- Action名字，类以及导航页面定义 -->

        <!-- 通过Action类处理才导航的的Action定义 -->

        <action name="upload" class="com.onload.photoOnload">

            <result name="input">/index.jsp</result>

            <result name="success">/result.jsp</result>

        </action>

    </package>

</struts>

五.结果页面

<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<%@taglib prefix="s" uri="/struts-tags"%>

<html>

    <head>

        <meta http-equiv="Content-Type" content="text/html; charset=gb2312">

        <title>上传结果</title>

    </head>

    <body>
        <!-- 显示上传成功文件名 -->
	上传文件成功，上传的文件是：
        <s:property value="fileFileName" />
        <a href="index.jsp">首页</a>
    </body>

</html>