java - 如何使用多个参数调用 HTTP POST 请求？

Question

如何使用多个参数调用 http post 请求。

像这样

  WebClient webClient = new WebClient();
            webClient.Headers["Content-type"] = "application/json";
            webClient.Encoding = Encoding.UTF8;
            webClient.UploadStringCompleted += new      UploadStringCompletedEventHandler(wc_UploadStringCompleted);
            webClient.UploadStringAsync(new Uri(URL), "POST", JSON);

这个在 C# 中。但我想要安卓

我已经试过了

  public String postServiceCall(String paraURL,JSONArray jsonParams, String usrId, String syncDt){
    TAG = "makeHttpRequestJSONObject";    
    Log.d(MODULE, TAG + " called");

    String json = "";  
    InputStream is = null;

    try{                        
        HttpParams httpParams = new BasicHttpParams();
        int timeoutConnection = 3000;
        HttpConnectionParams.setConnectionTimeout(httpParams, timeoutConnection);

        int timeoutSocket = 5000;
        HttpConnectionParams.setSoTimeout(httpParams, timeoutSocket);

        DefaultHttpClient httpClient = new DefaultHttpClient(httpParams);
        String params = "UserId="+ usrId +"&SyncDate="+syncDt;  
        String encodedUrl = URLEncoder.encode (params,"UTF-8");
        HttpPost httpPost = new HttpPost(paraURL+encodedUrl);
        httpPost.setHeader( "Content-Type", "application/json" );

        Log.v(MODULE, TAG + ", POST paraURL " + (paraURL+encodedUrl));      
        Log.v(MODULE, TAG + ", POST paraURL jsonParams.toString() " + (jsonParams.toString()));

        httpPost.setEntity(new ByteArrayEntity(jsonParams.toString().getBytes("UTF8")));  

        HttpResponse httpResponse = httpClient.execute(httpPost);
        HttpEntity httpEntity = httpResponse.getEntity();
        is = httpEntity.getContent();

        BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }

        is.close();

        json = sb.toString().trim();
        json = json.substring(1,3);
        Log.v(MODULE, TAG + ", json data " + json);

    } catch (Exception e){
        Log.e(MODULE, TAG + "Exception Occurs " + e);
        json = "";
    }

    return json;
}
}

此代码无法正常工作。此代码仅发布 json。这里 userid 和 syncdate 不发送到服务器端

Answer 1

请检查一下

String encodedUrl = URLEncoder.encode (params,"UTF-8");

例子你的代码像这样返回 url

输入“http://test.com/ttttt?query=jjjj test”输出“http://test.com/ttttt?query=jjjj+test”

但是你需要这样的url

输出“http://test.com/ttttt?query=jjjj%20test”

所以你可以试试这个函数进行url编码

public String parseUrl(String surl) throws Exception
{
    URL u = new URL(surl);
    return new URI(u.getProtocol(), u.getAuthority(), u.getPath(), u.getQuery(), u.getRef()).toString();
}

或

这可能会帮助您适应更高版本

public String parseURL(String url, Map<String, String> params)
{
    Builder builder = Uri.parse(url).buildUpon();
    for (String key : params.keySet())
    {
        builder.appendQueryParameter(key, params.get(key));
    }
    return builder.build().toString();
}