在struts2中实现文件的下载

在struts2中实现文件的下载
1，download.jsp
<s:a href="/struts2/download.action">download</s:a>
2,struts.xml配置文件
<!-- 文件的下载功能 -->
<action name="download" class="com.test.action.DownLoadAction">
<result name="success" type="stream">
<param name="contentType">image/jpeg</param>
<param name="contentDisposition">filename="ICARD Family.jpg"</param>
<param name="inputName">downloadFile</param>
</result>
</action>
3，对应的action
package com.test.action;

import java.io.InputStream;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

public class DownLoadAction extends ActionSupport {

public InputStream getDownloadFile() {
return ServletActionContext.getServletContext().getResourceAsStream(
"/upload/company.jpg");
}

public String execute() throws Exception{
return SUCCESS;
}
}
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