Struts2实现文件上传实例...

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Struts2

Struts XML Apache Web JSP

1.UploadAction.java

package lee;

import com.opensymphony.xwork2.ActionSupport;
import org.apache.struts2.ServletActionContext;
import java.io.File;
import java.io.*;
public class UploadAction extends ActionSupport {
private String title;
private File upload;
private String uploadContentType; //这两个属性是必须有的,有框架要用
private String uploadFileName; //这两个属性是必须有的,有框架要用

//接受依赖注入的属性

private String savePath;

public String getTitle() {
return title;
}

public void setTitle(String title) {
this.title = title;
}

public File getUpload() {
return upload;
}

public void setUpload(File upload) {
this.upload = upload;
}

public String getUploadContentType() {
return uploadContentType;
}

public void setUploadContentType(String uploadContentType) {
this.uploadContentType = uploadContentType;
}

public String getUploadFileName() {
return uploadFileName;
}

public void setUploadFileName(String uploadFileName) {
this.uploadFileName = uploadFileName;
}

public String getSavePath() {
  return ServletActionContext.getRequest().getRealPath(savePath);
}
//接受依赖注入的方法
public void setSavePath(String savePath) {
  this.savePath = savePath;
}
    public String execute()throws Exception{
    System.out.println("开始上传单个文件-------------");
    System.out.println(this.getSavePath());
    System.out.println("=========="+this.getUploadFileName());
    System.out.println("=========="+this.getUploadContentType());
    System.out.println("=========="+this.getUpload());
    //以服务器的文件保存地址和原文件名建立上传文件输出流
    FileOutputStream fos=new FileOutputStream(this.getSavePath()+"\\"+this.getUploadFileName());
    FileInputStream fis=new FileInputStream(this.getUpload());
    byte[] buffer=new byte[1024];
    int len=0;
    while((len=fis.read(buffer))>0){
      fos.write(buffer,0,len);
    }
    return SUCCESS;
    }
}

2.struts.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>

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

  <action name="upload" class="lee.UploadAction">
            <param name="savePath">/upload</param>
   <result>/succ.jsp</result>
  </action>
</package>
</struts>

3.web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<welcome-file-list>
    <welcome-file>login.jsp</welcome-file>
</welcome-file-list>

<filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
    </filter>

<filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

</web-app>

4.upload.html

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GBK" />
<title>简单的文件上传</title>
</head>
<body>
<form action="upload.action" method="post" enctype="multipart/form-data">
文件标题：<input type="text" name="title" /><br>
选择文件：<input type="file" name="upload" /><br>
<input value="上传" type="submit" />
</form>
</body>

5.succ.jsp

<%@ page language="java" contentType="text/html;charset=GBK"%>
<%@taglib prefix="s" uri="/struts-tags"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>上传成功!</title>
</head>

<body>
上传成功!<br>
文件标题:<s:property value="+ title"/>
文件为：<img src="<s:property value="'upload/' + uploadFileName"/>"/><br>
</body>
</html>

</html>

另外要注意在根目录下面建upload文件夹

分享到：

struts2自动实现过滤 | java.net.URLDecorder与java.net.URLEncode ...

2008-10-27 17:19
浏览 5624
评论(2)
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2 楼 processer_java 2010-03-04

拦截器那样配置，还是一样拿不到文件名！

1 楼 hufeng 2009-07-28

private File upload;
file的路径貌似本地路径,在自己的机器的ie上没问题,去局域网别的机器行吗?

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