瑕佸疄鐜癑ava闄勪欢涓婁紶鍔熻兘锛屽彲浠ユ寜鐓т互涓嬫楠よ繘琛岋細

1. 鍒涘缓涓€涓狧TML琛ㄥ崟锛屽寘鍚竴涓敤浜庨€夋嫨鏂囦欢鐨刬nput鍏冪礌鍜屼竴涓敤浜庢彁浜よ〃鍗曠殑鎸夐挳銆傝〃鍗曠殑enctype灞炴€у簲璁剧疆涓?quot;multipart/form-data"锛屼互鏀寔鏂囦欢涓婁紶銆?/li>

<form method="POST" action="/upload" enctype="multipart/form-data">
<input type="file" name="file">
<input type="submit" value="涓婁紶">
</form>

2. 鍦↗ava鍚庣缂栧啓涓€涓鐞嗘枃浠朵笂浼犵殑Servlet銆傚湪doPost鏂规硶涓紝浣跨敤HttpServletRequest鐨刧etPart鏂规硶鑾峰彇鏂囦欢鐨凱art瀵硅薄銆?/li>

@WebServlet("/upload")
@MultipartConfig
public class UploadServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Part filePart = request.getPart("file");
InputStream fileContent = filePart.getInputStream();
// 澶勭悊涓婁紶鐨勬枃浠?/span>
}
}

3. 濡傛灉闇€瑕佸皢鏂囦欢淇濆瓨鍒版湇鍔″櫒鐨勬枃浠剁郴缁熶腑锛屽彲浠ヤ娇鐢↗ava鐨処O鎿嶄綔銆備緥濡傦紝鍙互鍒涘缓涓€涓狥ileOutputStream瀵硅薄锛屽皢鏂囦欢鍐呭鍐欏叆鍒版湇鍔″櫒鐨勭鐩樹笂銆?/li>

String fileName = filePart.getSubmittedFileName();
OutputStream outputStream = new FileOutputStream("/path/to/save/" + fileName);
int bytesRead;
byte[] buffer = new byte[8192];
while ((bytesRead = fileContent.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
outputStream.close();
fileContent.close();

4. 鍦ㄥ鐞嗗畬鏂囦欢涓婁紶鍚庯紝鍙互鏍规嵁闇€瑕佽繘琛屽叾浠栨搷浣滐紝姣斿灏嗘枃浠朵俊鎭繚瀛樺埌鏁版嵁搴撲腑鎴栫敓鎴愪笅杞介摼鎺ョ瓑銆?/li>

闇€瑕佹敞鎰忎互涓嬪嚑鐐癸細

• 鍦⊿ervlet绫讳笂浣跨敤@MultipartConfig娉ㄨВ锛屼互渚挎敮鎸佹枃浠朵笂浼犮€?/p>

• 浣跨敤request.getPart(鈥渇ile鈥?鏂规硶鑾峰彇鏂囦欢鐨凱art瀵硅薄銆?/p>

• 浣跨敤Part瀵硅薄鐨刧etSubmittedFileName鏂规硶鑾峰彇涓婁紶鏂囦欢鐨勫師濮嬫枃浠跺悕銆?/p>

• 浣跨敤Part瀵硅薄鐨刧etInputStream鏂规硶鑾峰彇涓婁紶鏂囦欢鐨処nputStream瀵硅薄銆?/p>

• 瀵规枃浠惰繘琛孖O鎿嶄綔鏃讹紝闇€瑕侀€愬潡璇诲彇骞跺啓鍏ワ紝浠ラ伩鍏嶅唴瀛樻孩鍑虹殑闂銆?/p>

• 娑夊強鍒版枃浠剁郴缁熺殑鎿嶄綔鏃讹紝闇€瑕佺‘淇濇湇鍔″櫒鏈夎冻澶熺殑鏉冮檺杩涜鏂囦欢鎿嶄綔銆?/p>

浠ヤ笂鏄竴涓熀鏈殑鏂囦欢涓婁紶鍔熻兘鐨勫疄鐜版柟寮忥紝鍏蜂綋鐨勫疄鐜拌繕浼氭牴鎹」鐩殑闇€姹傚拰妗嗘灦杩涜璋冩暣銆?/p>