无法从我的Andr​​oid应用程序做一个HTTP POST到Web服务 [英] Can't do a HTTP Post to a Web Service from my Android App

问题描述

我一直对使用GET和POST请求的Web服务的应用程序。在GET请求没有问题，但POST请求笑死我了。我试过2个不同的场景会在code。第一个看起来像这样...

I've been working on an app that uses both GET and POST requests to Web Services. The GET requests are no problems but the POST requests are killing me. I've tried 2 different scenarios in the code. The first looks like this...

 HttpClient httpclient = new DefaultHttpClient();  
 HttpPost httppost = new HttpPost(ws);  
 JSONObject jsonObject = new JSONObject();

 try {  
// Add your data  
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);  
jsonObject.put("action", "login");
jsonObject.put("username", "*********");
    jsonObject.put("password", "*********");

    httppost.setHeader("jsonString", jsonObject.toString());  
StringEntity se = new StringEntity( jsonObject.toString());    
se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));  
httppost.setEntity(se); 


            // Execute HTTP Post Request  
            HttpResponse response = httpclient.execute(httppost);  
            textview.setText(getResponse(response.getEntity()));
        } catch (ClientProtocolException e) {  
            textview.setText(e.getLocalizedMessage());
        } catch (IOException e) {  
            textview.setText(e.getLocalizedMessage());
        } catch (JSONException e) {
            textview.setText(e.getLocalizedMessage());
        }

这code得到这样的结果对我来说...结果
错误的请求（无效标题名称）

This code gets this result for me...
"Bad Request (Invalid Header Name)"

现在这里是我的第二块code ...

Now here's my second piece of code...

 HttpClient httpclient = new DefaultHttpClient();  
      HttpPost httppost = new HttpPost(ws);  
      JSONObject jsonObject = new JSONObject();

        try {  
            // Add your data  
            List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);  
            jsonObject.put("action", "login");
            jsonObject.put("username", "******");
            jsonObject.put("password", "******");

            nameValuePairs.add(new BasicNameValuePair("jsonString", jsonObject.toString()));
            httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));  

            // Execute HTTP Post Request  
            HttpResponse response = httpclient.execute(httppost);  

            textview.setText(getResponse(response.getEntity()));
        } catch (ClientProtocolException e) {  
            textview.setText(e.getLocalizedMessage());
        } catch (IOException e) {   
            textview.setText(e.getLocalizedMessage());
        } catch (JSONException e) {

        }

这给了我一个完全不同的结果。这是XML和SOAP长乱码混乱，确实有它提到一个SOAP异常......结果
服务器无法处理请求--- System.Xml.XmlException：。在根级别的数据无效线路1，位置1结果
现在，任何人都可以阐明什么我做错了任何光线。

This gives me an entirely different result. It's a long garbled mess of xml and SOAP that does have a SOAP Exception mentioned in it...
"Server was unable to process request. --- System.Xml.XmlException: Data at the root level is invalid. Line 1, position 1."
Now, can anyone shed any light on what I am doing wrong.

推荐答案

在您的第二件code附加的：

in your second piece of code add ::

   // Execute HTTP Post Request  
    UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(postParameters, HTTP.UTF_8);
    httppost.setEntity(formEntity);
    HttpResponse response = httpclient.execute(httppost);   

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