Struts2 文件下载 (解决了中文文件名)

Struts Action 代码

package org.cxg.action;

import java.io.InputStream;
import java.io.UnsupportedEncodingException;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

public class DownLoadAction extends ActionSupport{

    //下载文件原始存放路径
    private final static String DOWNLOADFILEPATH="/";
    
    //下载文件名
    private String fileName ;
	
	public InputStream getInputStream() throws Exception{
		
		return ServletActionContext.getServletContext().getResourceAsStream(DOWNLOADFILEPATH + fileName);
	}
	
	
	@Override
	public String execute() throws Exception {		
			
		fileName = "小胖子.jpg";
		
		return SUCCESS;
	}

	
	 /** 提供转换编码后的供下载用的文件名 */   
	   
	     public String getDownloadFileName() {   
	   
	         String downFileName = fileName;   
	   
	         try {   
	   
	             downFileName = new String(downFileName.getBytes(), "ISO8859-1");   
	   
	         } catch (UnsupportedEncodingException e) {   
	   
	             e.printStackTrace();   
	   
	         }   
	   
	         return downFileName;   
	   
	     }   

	public String getFileName() {
		return fileName;
	}


	public void setFileName(String fileName) {
		this.fileName = fileName;
	}
	
	
	
}

Struts.xml配置

<package name="default" namespace="/" extends="struts-default">
        <action name="index" class="org.cxg.action.UploadAction" method="upload">
            <result type="redirectAction"></result>
        </action>
        
        <action name="download" class="org.cxg.action.DownLoadAction" method="execute">
			<result name="success" type="stream">
				<param name="inputName">inputStream</param>
				 <param name="contentType">image/jpeg;charset=ISO8859-1</param>  
				<param name="contentDisposition">attachment;filename=${downloadFileName}</param>
				<param name="bufferSize">4096</param>
			</result>
        </action>
    </package>