我对一些弃用的方法有疑问，特别是我在这里发布的这个。
我想要的很简单：使用http post ---＆gt;将数据发送到服务器使用我从客户端收到的数据进行查询 - ＆gt;发送回复
我正在尝试使用API 6.0开发Android应用程序，但我的所有方法都已弃用，我必须更改以使用new转换代码？
public class ReadServer extends Activity {
String result;
public String readserver(String id_data, String data){
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost("myurl/queryMobile.php");
StringBuilder builder = new StringBuilder();
String json = "";
//Build jsonObject
JSONObject jsonObject = new JSONObject();
jsonObject.accumulate(id_data, data);
//Convert JSONObject to JSON to String
json = jsonObject.toString();
//Set json to StringEntity
StringEntity se = new StringEntity(json);
//Set httpPost Entity
httpPost.setEntity(se);
//Set some headers to inform server about the type of the content
httpPost.setHeader("Accept", "application/json");
httpPost.setHeader("Content-type", "application/json");
//Execute POST request to the given URL
HttpResponse httpResponse = httpclient.execute(httpPost);
//Receive response as inputStream
StatusLine statusLine = httpResponse.getStatusLine();
int statusCode = statusLine.getStatusCode();
//Convert input stream to string
AlertDialog.Builder alertDialog;
switch(statusCode){
case 200:
HttpEntity entity = httpResponse.getEntity();
InputStream content = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(content));
String line="";
try{
while ((line = reader.readLine()) != null) {
builder.append(line);
result = builder.toString();
}
}catch(Exception e){
alertDialog = new AlertDialog.Builder(this);
alertDialog.setTitle("400 Bad Request");
alertDialog.setMessage("Non è stato possibile soddisfare la tua richiesta, riprova più tardi.");
alertDialog.show();
}
break;
case 500:
alertDialog = new AlertDialog.Builder(this);
alertDialog.setTitle("500 Internal Server Error");
alertDialog.setMessage("Non è stato possibile soddisfare la tua richiesta, riprova più tardi.");
alertDialog.show();
break;
case 503:
alertDialog = new AlertDialog.Builder(this);
alertDialog.setTitle("503 Service Unavailable");
alertDialog.setMessage("Il server di ....non è al momento disponibile, riprova più tardi.");
alertDialog.show();
break;
case 504:
alertDialog = new AlertDialog.Builder(this);
alertDialog.setTitle("504 Gateway Timeout");
alertDialog.setMessage("Il server di ....è momentaneamente sovraccarico, riprova più tardi.");
alertDialog.show();
break;
default:
alertDialog = new AlertDialog.Builder(this);
alertDialog.setTitle("Si è verificato un errore");
alertDialog.setMessage("Errore 001" +"\n"+"Non è stato possibile soddisfare la tua richiesta, riprova più tardi.");
alertDialog.show();
break;
}
}catch(Exception e){
AlertDialog.Builder alertDialog = new AlertDialog.Builder(this);
alertDialog.setTitle("Si è verificato un errore");
alertDialog.setMessage("Errore 001" + "\n" + "Non è stato possibile soddisfare la tua richesta, riprova più tardi.");
alertDialog.show();
}
return result;
}
}
我尝试更改某些方法，但我不知道如何转换某些过程，例如：
setEntity，HttpResponse，StatusLine ......
我绝对需要用new更改已弃用的方法，我无法更改所有代码。
编辑1： 例如，在我的MainActivity中：
ReadServer read = new ReadServer();
String result = read.readserver("list_news","homepage");
我的类ReadServer输入两个参数：
public String readserver(String id_data, String data){
...
jsonObject.accumulate(id_data, data); // in a jsonObject i put two params
...
}
我制作一个Http Post，我的数据被发送到我的服务器（我的php页面）
$raw = file_get_contents('php://input');
$value = json_decode($raw, true);
$list_news = $value['list_news'];
此时我获取了我的数据，我可以进行查询：
if (isset($list_news)) {
switch($list_news){
case "homepage":
$q = "SELECT
FROM
WHERE ";
答案 0 :(得分：4)
我认为您可以参考我的以下示例代码，然后将其逻辑用于您的应用：
private class POSTRequest extends AsyncTask<Void, Void, String> {
@Override
protected String doInBackground(Void... voids) {
String address = "http://192.16.1.100:24780/api/token";
HttpURLConnection urlConnection;
String requestBody;
Uri.Builder builder = new Uri.Builder();
Map<String, String> stringMap = new HashMap<>();
stringMap.put("grant_type", "password");
stringMap.put("username", "bnk");
stringMap.put("password", "bnkpwd");
Iterator entries = stringMap.entrySet().iterator();
while (entries.hasNext()) {
Map.Entry entry = (Map.Entry) entries.next();
builder.appendQueryParameter(entry.getKey().toString(), entry.getValue().toString());
entries.remove();
}
requestBody = builder.build().getEncodedQuery();
try {
URL url = new URL(address);
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setDoInput(true);
urlConnection.setDoOutput(true);
// urlConnection.setRequestMethod("POST");
urlConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
OutputStream outputStream = new BufferedOutputStream(urlConnection.getOutputStream());
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(outputStream, "utf-8"));
writer.write(requestBody);
writer.flush();
writer.close();
outputStream.close();
JSONObject jsonObject = new JSONObject();
InputStream inputStream;
// get stream
if (urlConnection.getResponseCode() < HttpURLConnection.HTTP_BAD_REQUEST) {
inputStream = urlConnection.getInputStream();
} else {
inputStream = urlConnection.getErrorStream();
}
// parse stream
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
String temp, response = "";
while ((temp = bufferedReader.readLine()) != null) {
response += temp;
}
// put into JSONObject
jsonObject.put("Content", response);
jsonObject.put("Message", urlConnection.getResponseMessage());
jsonObject.put("Length", urlConnection.getContentLength());
jsonObject.put("Type", urlConnection.getContentType());
return jsonObject.toString();
} catch (IOException | JSONException e) {
return e.toString();
}
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
Log.i(LOG_TAG, "POST\n" + result);
}
}
更新：
使用您的PHP代码，您可以尝试以下更新：
...
JSONObject json = new JSONObject();
json.put("key1", "sample value...");
requestBody = json.toString();
URL url = new URL(address);
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setDoInput(true);
urlConnection.setDoOutput(true);
urlConnection.setRequestProperty("Content-Type", "application/json");
OutputStream outputStream = new BufferedOutputStream(urlConnection.getOutputStream());
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(outputStream, "utf-8"));
writer.write(requestBody);
writer.flush();
writer.close();
outputStream.close();
...
您可以在Deprecated HTTP Classes阅读更多内容。
其他好的解决方案供您参考：
希望这有帮助！