package cn.stylefeng.guns.sys.core.util;
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import cn.stylefeng.roses.core.util.FileUtil;
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import javax.servlet.http.HttpServletResponse;
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import java.io.BufferedOutputStream;
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import java.io.OutputStream;
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import java.net.URLEncoder;
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/**
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* 下载文件
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*
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* @author fengshuonan
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* @Date 2019/8/7 23:14
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*/
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public class FileDownload {
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/**
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* @param response
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* @param filePath 文件完整路径(包括文件名和扩展名)
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* @param fileName 下载后看到的文件名
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* @return 文件名
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*/
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public static void fileDownload(final HttpServletResponse response, String filePath, String fileName) throws Exception {
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byte[] bytes = FileUtil.toByteArray(filePath);
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fileName = URLEncoder.encode(fileName, "UTF-8");
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response.reset();
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response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
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response.addHeader("Content-Length", "" + bytes.length);
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response.setContentType("application/octet-stream;charset=UTF-8");
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OutputStream outputStream = new BufferedOutputStream(response.getOutputStream());
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outputStream.write(bytes);
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outputStream.flush();
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outputStream.close();
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response.flushBuffer();
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}
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}
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