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add: 下载文件对象到客户端

This commit is contained in:
Yangzhao 2020-07-04 15:48:38 +08:00
parent 3dfddd290e
commit 82099528a7
1 changed files with 14 additions and 3 deletions
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17
diboot-file-starter/src/main/java/com/diboot/file/util/HttpHelper.java
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@ -248,16 +248,27 @@ public class HttpHelper {
* @throws Exception * @throws Exception
*/ */
public static void downloadLocalFile(String localFilePath, String exportFileName, HttpServletResponse response) throws Exception{ public static void downloadLocalFile(String localFilePath, String exportFileName, HttpServletResponse response) throws Exception{
downloadLocalFile(new File(localFilePath), exportFileName, response);
}
/**
* 根据文件对象下载服务器文件
* @param localFile 本地文件对象
* @param exportFileName 导出文件的文件名
* @param response
* @throws Exception
*/
public static void downloadLocalFile(File localFile, String exportFileName, HttpServletResponse response) throws Exception{
BufferedInputStream bis = null; BufferedInputStream bis = null;
BufferedOutputStream bos = null; BufferedOutputStream bos = null;
try{ try{
String fileName = new String(exportFileName.getBytes("utf-8"), "ISO8859-1"); String fileName = new String(exportFileName.getBytes("utf-8"), "ISO8859-1");
long fileLength = new File(localFilePath).length(); long fileLength = localFile.length();
response.setContentType(getContextType(fileName)); response.setContentType(getContextType(fileName));
response.setHeader("Content-disposition", "attachment; filename="+ fileName); response.setHeader("Content-disposition", "attachment; filename="+ fileName);
response.setHeader("Content-Length", String.valueOf(fileLength)); response.setHeader("Content-Length", String.valueOf(fileLength));
response.setHeader("filename", URLEncoder.encode(exportFileName, StandardCharsets.UTF_8.name())); response.setHeader("filename", URLEncoder.encode(exportFileName, StandardCharsets.UTF_8.name()));
bis = new BufferedInputStream(new FileInputStream(localFilePath)); bis = new BufferedInputStream(new FileInputStream(localFile));
bos = new BufferedOutputStream(response.getOutputStream()); bos = new BufferedOutputStream(response.getOutputStream());
byte[] buff = new byte[2048]; byte[] buff = new byte[2048];
int bytesRead; int bytesRead;
@ -266,7 +277,7 @@ public class HttpHelper {
} }
} }
catch (Exception e) { catch (Exception e) {
log.error("下载导出文件失败:"+localFilePath, e); log.error("下载导出文件失败:"+localFile.getAbsolutePath(), e);
} }
finally { finally {
if (bis != null) { if (bis != null) {