通过帖子从android发送数据到node.js？

Question

我使用nodejs作为服务器，java（android）作为客户端，我通过post从android发送数据到节点。 但我的问题是当android发送数据（字符串）由空间和新行（输入）组成时，它在节点上收到但字符是变化的，

例如，我从android发送此字符串

Hello
I learn android

字符串发送到节点并收到，但我在节点中得到它

Hello%0AI+learn+android

我使用此代码将字符串发送到android中的节点。

 public void btnOnClick(){
      String text= URLEncoder.encode(editText.getText().toString(), "utf-8"); //I get from editText and convert to utf-8
      sendToNode(text);

}


public void sendToNode(String text){
    try {                       

                 HttpClient httpclient = new DefaultHttpClient();
                 HttpPost httppost = new HttpPost("http://myDomain.com:8888/");
                 UrlEncodedFormEntity form;
                 try {
                     Log.i("kirim ke node isitextAsli ",text);
                     List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();


                     nameValuePairs.add(new BasicNameValuePair("datanah",text));
                     form=new UrlEncodedFormEntity(nameValuePairs,"UTF-8");
                     httppost.setEntity(form);

                     HttpResponse response = httpclient.execute(httppost);


                     Log.i("HTTP Post", "Response from server node = " + response.getStatusLine().getReasonPhrase() + "  Code = " + response.getStatusLine().getStatusCode());
                 } catch (ClientProtocolException e) {
                     Log.e("HTTP Post", "Protocol error = " + e.toString());
                 } catch (IOException e) {
                     Log.e("HTTP Post", "IO error = " + e.toString());
       }
}

我在节点中使用此代码接收字符串

req.addListener('data', function(chunk) { data += chunk; });
req.addListener('end', function() {
    console.log("from android :"+data); //result of data is Hello%0AI+learn+android 

});

我怎么解决我的问题？

请帮忙，谢谢。

Answer 1

字符串是URL编码的，正如您在代码中明确要求的那样（并且需要常规POST）。 在服务器上解码它。

要在服务器端解码它，请执行以下操作：

var querystring = require('querystring'); 
querystring.unescape(data.replace(/\+/g, " "));

Answer 2

以下是编码和解码的示例，您希望在服务器部分解码

        String encoded;  
        try {  
            encoded = URLEncoder.encode(input, "UTF-8");  

        System.out.println("URL-encoded by client with UTF-8: " + encoded);  

        String incorrectDecoded = URLDecoder.decode(encoded, "ISO-8859-1");  
        System.out.println("Then URL-decoded by server with ISO-8859-1: " + incorrectDecoded);  

        String correctDecoded = URLDecoder.decode(encoded, "UTF-8");  
        System.out.println("Server should URL-decode with UTF-8: " + correctDecoded);  
        } catch (UnsupportedEncodingException e) {  
            // TODO Auto-generated catch block  
            e.printStackTrace();  
        }