package?com.xp.action;

import?java.io.File;
import?java.io.FileInputStream;
import?java.io.IOException;
import?java.io.InputStream;
import?java.io.OutputStream;
import?java.io.UnsupportedEncodingException;

import?javax.servlet.http.HttpServletRequest;
import?javax.servlet.http.HttpServletResponse;

import?org.apache.struts2.ServletActionContext;

public?class?DownLoadAction?{
	private?String?fileName;//從前臺(tái)jsp頁(yè)面動(dòng)態(tài)傳遞過(guò)來(lái)的文件名。

	public?String?downLoad（）?throws?IOException?{
		
		HttpServletRequest?request=ServletActionContext.getRequest（）;
		String?path=request.getRealPath（“/download“）;
		
		File?file=new?File（pathfileName）;
		HttpServletResponse?response=ServletActionContext.getResponse（）;
		response.setCharacterEncoding（“utf-8“）;
		response.setContentLength（（int）file.length（））;//文件長(zhǎng)度默認(rèn)為long，這里暫時(shí)設(shè)為轉(zhuǎn)換為int
		response.setContentType（“application/octet-stream“）;
		response.setHeader（“Content-Disposition“?“attachment;filename=“+fileName）;
		
		InputStream?is=?new?FileInputStream（file）;
		OutputStream?os=response.getOutputStream（）;
		
		int?len=0;
		byte[]buffer=new?byte[200];
		while?（（len=is.read（buffer））!=-1）?{
			os.write（buffer?0?len）;
		}
		if（os!=null）{
			os.close（）;
		}
		if（is!=null）{
			is.close（）;
		}
		response.flushBuffer（）;
		return?null;
	}

	/**
	?*?@return?the?fileName
	?*/
	public?String?getFileName（）?{
		return?fileName;
	}

	/**
	?*?@param?fileName?the?fileName?to?set
	?*?@throws?UnsupportedEncodingException?
	?*/
	public?void?setFileName（String?fileName）?{
		this.fileName?=?fileName;
	}
}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????1444??2017-10-26?12:20??13Struts2DownLoad\.classpath

?????文件????????325??2017-10-29?20:48??13Struts2DownLoad\.mymetadata

?????文件???????1235??2017-10-28?18:17??13Struts2DownLoad\.project

?????文件???????1040??2017-10-28?18:46??13Struts2DownLoad\.settings\com.genuitec.eclipse.j2eedt.core.prefs

?????文件????????330??2017-10-24?00:26??13Struts2DownLoad\.settings\org.eclipse.jdt.core.prefs

?????文件???????1660??2017-10-29?11:00??13Struts2DownLoad\src\com\xp\action\DownLoadAction.java

?????文件???????1229??2017-10-28?21:27??13Struts2DownLoad\src\com\xp\action\StreamDownLoadAction.java

?????文件????????123??2017-10-28?14:56??13Struts2DownLoad\src\struts.properties

?????文件???????1021??2017-10-28?21:53??13Struts2DownLoad\src\struts.xml

?????文件?????705780??2017-10-28?18:21??13Struts2DownLoad\WebRoot\download\java1.pdf

?????文件?????586671??2017-10-28?18:21??13Struts2DownLoad\WebRoot\download\java2.pdf

?????文件????????774??2017-10-28?21:47??13Struts2DownLoad\WebRoot\ignored.jsp

?????文件???????1716??2017-10-28?21:36??13Struts2DownLoad\WebRoot\index.jsp

?????文件?????284394??2017-10-28?17:12??13Struts2DownLoad\WebRoot\js\jquery-1.11.3.js

?????文件?????????39??2017-10-24?00:26??13Struts2DownLoad\WebRoot\meta-INF\MANIFEST.MF

?????文件???????2284??2017-10-29?11:00??13Struts2DownLoad\WebRoot\WEB-INF\classes\com\xp\action\DownLoadAction.class

?????文件???????1328??2017-10-29?10:51??13Struts2DownLoad\WebRoot\WEB-INF\classes\com\xp\action\StreamDownLoadAction.class

?????文件????????123??2017-10-28?14:56??13Struts2DownLoad\WebRoot\WEB-INF\classes\struts.properties

?????文件???????1021??2017-10-28?21:53??13Struts2DownLoad\WebRoot\WEB-INF\classes\struts.xml

?????文件??????43578??2017-10-26?12:20??13Struts2DownLoad\WebRoot\WEB-INF\lib\asm-3.3.jar

?????文件??????38275??2017-10-26?12:20??13Struts2DownLoad\WebRoot\WEB-INF\lib\asm-commons-3.3.jar

?????文件??????21503??2017-10-26?12:20??13Struts2DownLoad\WebRoot\WEB-INF\lib\asm-tree-3.3.jar

?????文件??????59590??2017-10-26?12:20??13Struts2DownLoad\WebRoot\WEB-INF\lib\commons-fileupload-1.2.2.jar

?????文件?????159509??2017-10-26?12:20??13Struts2DownLoad\WebRoot\WEB-INF\lib\commons-io-2.0.1.jar

?????文件?????315805??2017-10-26?12:20??13Struts2DownLoad\WebRoot\WEB-INF\lib\commons-lang3-3.1.jar

?????文件?????931168??2017-10-26?12:20??13Struts2DownLoad\WebRoot\WEB-INF\lib\freemarker-2.3.19.jar

?????文件?????614203??2017-10-26?12:20??13Struts2DownLoad\WebRoot\WEB-INF\lib\javassist-3.11.0.GA.jar

?????文件?????802721??2017-10-26?12:20??13Struts2DownLoad\WebRoot\WEB-INF\lib\mysql-connector-java-5.1.20-bin.jar

?????文件?????227807??2017-10-26?12:20??13Struts2DownLoad\WebRoot\WEB-INF\lib\ognl-3.0.5.jar

?????文件?????783238??2017-10-26?12:20??13Struts2DownLoad\WebRoot\WEB-INF\lib\struts2-core-2.3.4.jar

............此處省略24個(gè)文件信息