java - Android 通过 HTTP 发送数据并接收正文响应

Question

我看到 Android API 22 DefaultHttpClient 版本已弃用。在我的旧代码中，我必须将数据发送到 PHP 页面并获得页面 php 返回的响应。通过使用此代码:

HttpClient client = new DefaultHttpClient();
HttpPost request = new HttpPost("php page"); 

ArrayList<NameValuePair> parameters = new ArrayList<NameValuePair>();
parameters.add(new BasicNameValuePair("username", "user"));
parameters.add(new BasicNameValuePair("password", "pw"));

HttpResponse response = client.execute(request);
String responseMessage = response.getEntity().toString();

我看到 NameValuePair 已被弃用。我的问题是我怎样才能以另一种不推荐使用的方式做同样的事情。正如我所说，我需要将数据(通过邮寄)发送到 php 页面并获取 PhP 打印的页面。 (在我的例子中是一个字符串 JSON)。非常感谢!!

Answer 1

使用 HttpURLConnection。将您的值设置为 JSONObject 而不是将其设置为 NameValuePair。

public HttpURLConnection createConnection(){

    try{            
        urlconnection=(HttpURLConnection)url.openConnection();      
    }catch(Exception e){
        Log.e("Can't create connections", e.getMessage());

    }

    return urlconnection;

}
public String doFunctionPost(JSONObject object){
    try{
        urlconnection=createConnection();
        urlconnection.setDoInput(true);
        urlconnection.setDoOutput(true);
        urlconnection.setRequestMethod(method);
        urlconnection.setUseCaches(false);
        urlconnection.setConnectTimeout(10000);
        urlconnection.setReadTimeout(10000);
        urlconnection.setRequestProperty("json", object.toString());
        urlconnection.setRequestProperty("Content-Type", "application/json");

        OutputStreamWriter out=new OutputStreamWriter(urlconnection.getOutputStream());
        out.write(object.toString());
           System.out.println(object.toString());
            out.close();
            httpResult=urlconnection.getResponseCode();
            System.out.println("Response Code"+ httpResult);
            result=readResponse();

    }catch(Exception e){
        Log.e("Response Error", e.getMessage());

    }finally{
        removeConnection();
    }
    return result;
}

public String readResponse(){
    try{
        if(httpResult==HttpURLConnection.HTTP_OK){
            BufferedReader buffer_reader=new BufferedReader(new InputStreamReader(urlconnection.getInputStream(),"utf-8"));
            String line=null;
            sb=new StringBuilder();
            while((line=buffer_reader.readLine())!=null){
                sb.append(line+"\n");
            }
            buffer_reader.close();
            System.out.println("buffer_reader"+sb.toString());
        }else{
            Log.e("Error on posting", urlconnection.getResponseMessage());
        }
    }catch(Exception e){
        Log.e("Error in Response", e.getMessage());
    }
    return sb.toString();
}