import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.URL;

import java.net.URLConnection;

import org.apache.commons.io.IOUtils;

/**

* 從服務(wù)器中下載圖片

*

* @param fileName 圖片地址

* @param response

* @return

*/

@RequestMapping(value = "/download")

public void downloadMedia(HttpServletResponse response, HttpServletRequest request) {

InputStream inputStream = null;

OutputStream outputStream = null;

try {

//處理中文亂碼

request.setCharacterEncoding("UTF-8");

String fileName = request.getParameter("fileName");

fileName = new String(fileName.getBytes("iso8859-1"),"UTF-8");

//處理瀏覽器兼容

response.setContentType("application/msexcel;charset=utf-8");//定義輸出類型

Enumeration enumeration = request.getHeaders("User-Agent");

String browserName = (String) enumeration.nextElement();

boolean isMSIE = browserName.contains("MSIE");

if (isMSIE) {

response.addHeader("Content-Disposition", "attachment;fileName=" + URLEncoder.encode(fileName, "UTF8"));

} else {

response.addHeader("Content-Disposition", "attachment;fileName=" + new String(fileName.getBytes("gb2312"), "ISO8859-1"));

}

//url地址如果存在空格，會導(dǎo)致報(bào)錯！ 解決方法為：用+或者%20代替url參數(shù)中的空格。

fileName = fileName.replace(" ", "%20");

//圖片下載

URL url = new URL(fileName);

URLConnection conn = url.openConnection();

outputStream = response.getOutputStream();

inputStream = conn.getInputStream();

IOUtils.copy(inputStream, outputStream);

} catch (IOException e) {

System.err.println(e);

}finally {

IOUtils.closeQuietly(inputStream);

IOUtils.closeQuietly(outputStream);

}

}

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