如何上传，从用户名，密码在秋千上的tomcat服务器下载文件

Question

我想做一个连接到本地运行的tomcat服务器的swing程序。用户名，密码认证，然后用户可以在服务器目录中上传文件。 ie.http：//本地主机：8080/uploadfiles。从用户定义的文件路径，和下载到本地目录相同。

Answer 1

这是一个可能性： 下载：

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(); 
    } 

上传：

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(); 
    } 

现在，在服务器端，你将需要GET和POST请求进行区分，并相应地处理它们。您将需要一个库来处理上传，如Apache FileUpload

哦，在客户端，你将需要做的Base64编码如Apache库commons codec