在Java中使用commons的curl等效HttpClient

Question

我正在使用Commons HttpClient以一些字符串內容作爲參數發送post請求。以下是我的代碼：

// obtain the default httpclient 
    client = new DefaultHttpClient(); 

    // obtain a http post request object 
    postRequest = new HttpPost(stanbolInstance); 
    postRequest.setHeader("Accept", "application/json"); 

    // create an http param containing summary of article 
    List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1); 
    nameValuePairs.add(new BasicNameValuePair("data", content)); 

    try { 
     // add the param to postRequest 
     postRequest.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 
    } catch (UnsupportedEncodingException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 

    try { 
     // obtain the response 
     response = client.execute(postRequest); 
    } catch (ClientProtocolException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 

這裏，stanbolInstance是：http://dev.iks-project.eu:8081/enhancer 它不工作。以下是例外：

Problem accessing /enhancer. Reason: 
<pre> The parsed byte array MUST NOT be NULL!</pre></p><h3>Caused by:</h3><pre>java.lang.IllegalArgumentException: The parsed byte array MUST NOT be NULL! 

以下是捲曲相當於它的工作原理：

curl -X POST -H "Accept: text/turtle" -H "Content-type: text/plain" --data "The Stanbol enhancer can detect famous cities such as Paris and people such as Bob Marley." http://dev.iks-project.eu:8081/enhancer 

幫助！

Answer 1

我認爲你的內容是錯誤的。

替換：

List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1); 
    nameValuePairs.add(new BasicNameValuePair("data", content)); 

    try { 
     // add the param to postRequest 
     postRequest.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 
    } catch (UnsupportedEncodingException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 

與

postRequest.setEntity(new StringEntity(content));