如何从android中读取我的数据在servlet中？

我是新来的处理servlet，并试图从android应用程序发送数据到我的Servlet，但不知道在我的servlet中读取它的确切方式？ Android中我已经使用了这些发送数据：如何从android中读取我的数据在servlet中？

@Override 
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) 
      throws ServletException, IOException { 
     resp.setContentType("text/plain"); 
      resp.setContentType("text/plain"); 
       String request=req.getParameter("firstParam"); 

       resp.getWriter().println("firstParam ::::::::::"+request); 
    }

这是正确的，如果不是，请提供给我像发送一个字符串，并得到它在一些例子：

  URL url = new URL("http://example.appspot.com/testservlet"); 
      HttpURLConnection conn = (HttpURLConnection)url.openConnection(); 
      conn.setReadTimeout(10000); 
      conn.setConnectTimeout(15000); 
      conn.setRequestMethod("POST"); 
      conn.setDoInput(true); 
      conn.setDoOutput(true); 

      Uri.Builder builder = new Uri.Builder() 
        .appendQueryParameter("firstParam", "Rahul") 
        .appendQueryParameter("secondParam", "Anil") 
        .appendQueryParameter("thirdParam", "Rohan"); 
      String query = builder.build().getEncodedQuery(); 

      OutputStream os = conn.getOutputStream(); 
      BufferedWriter writer = new BufferedWriter(
        new OutputStreamWriter(os, "UTF-8")); 
      writer.write(query); 
      writer.flush(); 
      writer.close(); 
      os.close(); 
      conn.connect(); 
     }catch(Exception e){ 
      Exception exep= e; 
      Log.d("Test",exep+""); 
      return false; 
     } 
     Log.d("Test","Succesfully") 
     return true;

在servlet的我写的后servlet的？ Thanx提前

来源

2016-03-03 Rahul Verma

Google for'android read string from stream'。 – greenapps

-1

这个例子可以帮助你：

private Document sendRequest(String requestXML) throws Exception { 

    /** 
    // Open HTTP connection with TransitServlet 
    URLConnection tc = null; 
    try { 
     tc = servletURL.openConnection(); 
    } catch (IOException ioe) { 
     throw(ioe); 
    } 
    tc.setDoOutput(true); 
    tc.setDoInput(true); 

    // Write request to HTTP request body 
    OutputStreamWriter out = new OutputStreamWriter(tc.getOutputStream()); 
    out.write(requestXML); 
    out.flush(); 
    */ 
    // Read response into XML document object 
    DocumentBuilderFactory docBuilderFactory = 
     DocumentBuilderFactory.newInstance(); 
    DocumentBuilder docBuilder = null; 
    Document xmlDoc = null; 

    try { 
     docBuilder = docBuilderFactory.newDocumentBuilder(); 
    } catch (ParserConfigurationException pce) { 
     throw(pce); 
    } 

    initializeDataField(); 

    InputStream tcIn = null; 
    try { 
     tcIn = submitRequest(requestXML); 
     xmlDoc = docBuilder.parse(tcIn); 
    } catch (IOException ioe) { 
     throw(ioe); 
    } catch (SAXException saxe) { 
     throw(saxe); 
    } 
    //out.close(); 
    tcIn.close(); 

    // Return XML document object for interpretation 
    return(xmlDoc); 

}

全部代码在这里：http://code.openhub.net/file?fid=_qOpR4E6jYE2oD88aATVKqO3tP0&cid=jd-01_BUDSM&s=How%20to%20read%20my%20data%20in%20servlet%20from%20android%3F&pp=0&fl=Java&ff=1&filterChecked=true&fp=306406&mp,=1&ml=1&me=1&md=1&projSelected=true#L75

来源

2016-03-03 12:26:09 unilux

-2

我发现了一个例子，它可以对您有用：

https://github.com/wso2-attic/commons/blob/master/qa/qa-artifacts/app-server/as-5.2.0/myfaces/javaee7/servlet/non-blocking-io-read-war/src/main/java/org/glassfish/servlet/non_blocking_io_read_war/ClientTest.java#L93

protected void processRequest(HttpServletRequest request, HttpServletResponse response) 
     throws ServletException, IOException { 
    response.setContentType("text/html;charset=UTF-8"); 

    PrintWriter out = response.getWriter(); 

    out.println("<html>"); 
    out.println("<head>"); 
    out.println("<title>Non-blocking-read-war</title>"); 
    out.println("</head>"); 
    out.println("<body>"); 

    String urlPath = "http://" 
      + request.getServerName() 
      + ":" + request.getLocalPort() //default http port is 8080 
      + request.getContextPath() 
      + "/ServerTest"; 

    URL url = new URL(urlPath); 

    HttpURLConnection conn = (HttpURLConnection) url.openConnection(); 
    conn.setDoOutput(true); 
    conn.setRequestMethod("POST"); 
    conn.setChunkedStreamingMode(2); 
    conn.setRequestProperty("Content-Type", "text/plain"); 
    conn.connect(); 

    try { 
     output = conn.getOutputStream(); 
     // Sending the first part of data to server 
     String firstPart = "Hello"; 
     out.println("Sending to server: " + firstPart + "</br>"); 
     out.flush(); 
     writeData(output, firstPart); 

     Thread.sleep(2000); 

     // Sending the second part of data to server 
     String secondPart = "World"; 
     out.println("Sending to server: " + secondPart + "</br></br>"); 
     out.flush(); 
     writeData(output, secondPart); 

     // Getting the echo data from server 
     input = conn.getInputStream(); 
     printEchoData(out, input); 

     out.println("Please check server log for detail"); 
     out.flush(); 
    } catch (IOException ioException) { 
     Logger.getLogger(ReadListenerImpl.class.getName()).log(Level.SEVERE, 
       "Please check the connection or url path", ioException); 
    } catch (InterruptedException interruptedException) { 
     Logger.getLogger(ReadListenerImpl.class.getName()).log(Level.SEVERE, 
       "Thread sleeping error", interruptedException); 
    } finally { 
     if (input != null) { 
      try { 
       input.close(); 
      } catch (Exception ex) { 
      } 
     } 
     if (output != null) { 
      try { 
       output.close(); 
      } catch (Exception ex) { 
      } 
     } 
    } 

    out.println("</body>"); 
    out.println("</html>"); 

}

来源

2016-03-03 12:36:01 Dongsun

如何从android中读取我的数据在servlet中？

回答

相关问题