如何上傳，從用戶名，密碼在鞦韆上的tomcat服務器下載文件

Question

我想做一個連接到本地運行的tomcat服務器的swing程序。用戶名，密碼認證，然後用戶可以在服務器目錄中上傳文件。 ie.http：//本地主機：8080/uploadfiles。從用戶定義的文件路徑，和下載到本地目錄相同。

Answer 1

這是一個可能性： 下載：

URL url = new URL("http://localhost:8080/uploadfiles"); 
    HttpURLConnection con = (HttpURLConnection)url.openConnection(); 
    try { 
     con.addRequestProperty("Authorization", 
       "Basic " + encode64(username + ":" + password)); 
     InputStream in = con.getInputStream(); 
     try { 
      OutputStream out = new FileOutputStream(outFile); 
      try { 
       byte buf[] = new byte[4096]; 
       for (int n = in.read(buf); n > 0; n = in.read(buf)) { 
        out.write(buf, 0, n); 
       } 
      } finally { 
       out.close(); 
      } 
     } finally { 
      in.close(); 
     } 
    } finally { 
     con.disconnect(); 
    } 

上傳：

URL url = new URL("http://localhost:8080/uploadfiles"); 
    HttpURLConnection con = (HttpURLConnection)uploadUrl.openConnection(); 
    try { 
     con.setDoOutput(true); 
     con.setRequestMethod("POST"); 
     con.addRequestProperty("Authorization", 
       "Basic " + encode64(username + ":" + password)); 
     OutputStream out = con.getOutputStream(); 
     try { 
      InputStream in = new FileInputStream(inFile); 
      try { 
       byte buffer[] = new byte[4096]; 
       for (int n = in.read(buffer); n > 0; n = in.read(buffer)) { 
        out.write(buffer, 0, n); 
       } 
      } finally { 
       in.close(); 
      } 
     } finally { 
      out.close(); 
     } 
     int code = con.getResponseCode(); 
     if (code != HttpURLConnection.HTTP_OK) { 
      String msg = con.getResponseMessage(); 
      throw new IOException("HTTP Error " + code + ": " + msg); 
     } 
    } finally { 
     con.disconnect(); 
    } 

現在，在服務器端，你將需要GET和POST請求進行區分，並相應地處理它們。您將需要一個庫來處理上傳，如Apache FileUpload

哦，在客戶端，你將需要做的Base64編碼如Apache庫commons codec