基于Struts2环境下的文件上传实例（很简洁的逻辑和代码） 收藏

基于Struts2环境下的文件上传实例（很简洁的逻辑和代码） 收藏
package demo;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;

import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;

/**
* @author  yeeku.H.lee [e-mail]
* @version  1.0
* <br>Copyright (C), 2005-2008, yeeku.H.Lee
*/

@SuppressWarnings("serial")
public class UploadAction extends ActionSupport
{
private String title;// 一个备用的JavaBean属性
    private File upload;// 与上传页面中的元素 <input type="file" name="upload" /> 对应即可
    private String uploadContentType; // Struts2的fileUpload拦截器的固有属性
    private String uploadFileName; // Struts2的fileUpload拦截器的固有属性

//接受依赖注入的属性
    private String savePath;
//接受依赖注入的Setter方法
    public void setSavePath(String value)
{
        this.savePath = value;
    }

    @SuppressWarnings("deprecation")
private String getSavePath() throws Exception
{
        return ServletActionContext.getRequest().getRealPath(savePath);
    }
   
    public void setTitle(String title) {
       this.title = title;
    }
   
public void setUpload(File upload) {
  this.upload = upload;
}

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

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

public String getTitle() {
    return (this.title);
}
public File getUpload() {
  return (this.upload);
}

public String getUploadContentType() {
  return (this.uploadContentType);
}

public String getUploadFileName() {
  return (this.uploadFileName);
}
@Override
    public String execute() throws Exception
{
  System.out.println("开始上传单个文件....");
  System.out.println("原文件名称：" + getUploadFileName());
  System.out.println("原文件类型：" + getUploadContentType());
  System.out.println("上传文件保存在："+getSavePath());
  //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(getSavePath() + "\\" + getUploadFileName());
  FileInputStream fis = new FileInputStream(getUpload());
  byte[] buffer = new byte[4*1024];
  int len = 0;
  while ((len = fis.read(buffer)) > 0)
  {
   fos.write(buffer , 0 , len);
  }
  fis.close();
  fos.close();
        return SUCCESS;
    }
}

action的配置如下：

<!-- 测试文件上传-->
  <action name="uploadAction" class="demo.UploadAction">
    <param name="savePath">/upload</param>
    <result>/demo/upload.jsp</result>
  </action>