下载网络文件的Java代码
发布时间:2020-12-14 23:50:48 所属栏目:Java 来源:网络整理
导读:今天PHP站长网 52php.cn把收集自互联网的代码分享给大家,仅供参考。 import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileInputStream;import javax.servl
以下代码由PHP站长网 52php.cn收集自互联网 现在PHP站长网小编把它分享给大家,仅供参考 import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import javax.servlet.http.HttpServletResponse; import org.apache.log4j.Logger; public class DownLoadUtil { private static Logger logger = Logger.getLogger(DownLoadUtil.class); /** * 下载文件 * @param name 用户下载的文件名(*****.***) * @param filePath 文件路径 * @param response * @param fileType 文件类型 * @return * @throws Exception */ public static boolean downLoadFile(String name,String filePath,HttpServletResponse response,String fileType) throws Exception { logger.info("start invoke downLoadFile,[filePath:"+filePath+",fileType:"+fileType+"]"); File file = new File(filePath); //设置文件类型 if("pdf".equals(fileType)){ response.setContentType("application/pdf"); }else if("xls".equals(fileType)){ response.setContentType("application/msexcel"); }else if("doc".equals(fileType)){ response.setContentType("application/msword"); } response.setHeader("Content-Disposition","attachment;filename="" + new String(name.getBytes("GB2312"),"ISO8859-1") + """); //response.setHeader("Content-Disposition","attachment;filename=""+ URLEncoder.encode(name,"UTF-8")+ """); response.setContentLength((int) file.length()); byte[] buffer = new byte[4096];// 缓冲区 BufferedOutputStream output = null; BufferedInputStream input = null; try { output = new BufferedOutputStream(response.getOutputStream()); input = new BufferedInputStream(new FileInputStream(file)); int n = -1; while ((n = input.read(buffer,4096)) > -1) { output.write(buffer,n); } output.flush(); response.flushBuffer(); } catch (Exception e) { logger.error("exception when invoke downLoadFile",e); throw e; } finally { if (input != null) input.close(); if (output != null) output.close(); } logger.info("end invoke downLoadFile!"); return true; } } 以上内容由PHP站长网【52php.cn】收集整理供大家参考研究 如果以上内容对您有帮助,欢迎收藏、点赞、推荐、分享。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |