struts2文件下载

Action：

package test.action;

import java.io.InputStream;

import org.apache.struts2.ServletActionContext;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;

import common.action.BaseAction;

@Controller("downloadAction")
@Scope("prototype")
public class DownloadAction extends BaseAction {
	private String fileName;
	public String getFileName() {
		return this.fileName;
	}
	public void setFileName(String fileName) {
		this.fileName = fileName;
	}
	
	public InputStream getInputStream() {
		return ServletActionContext.getServletContext().getResourceAsStream("/softs/" + this.fileName);
	}
	
	public String execute() {
		return SUCCESS;
	}
}

struts配置文件：

<?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="test" extends="struts-default" namespace="/test">
		<action name="download" class="downloadAction" method="execute">
			<result type="stream">
				<param name="contentType">application/octet-stream</param>
				<param name="inputName">inputStream</param>
				<param name="contentDisposition">attachment;filename="${fileName}"</param>
				<param name="bufferSize">4096</param>
			</result>
		</action>
	</package>
</struts>

准备：下载/WebContext/softs/test.rar

  打开浏览器输入：http://localhost:8080/test/test/download.action?fileName=test.rar

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