我正在尝试在Android工作室中使用with来检索值。我已经在POSTMAN中测试了这个东西，但我不确定如何在Android studio中输入它。请帮我为此创建HTTP POST代码。
我正在做一个帖子
ml2.internalpositioning.com/track
用这个身体
{"username":"fyp","location":"location","group":"cowardlycrab","time":1501640084739,"wifi-fingerprint":[{"mac":"04:c5:a4:66:43:7k","rssi":-29}]}
//call asynctask like below :
JSONObject post_dict = new JSONObject();
try {
post_dict.put("username", "your_username_data");
post_dict.put("location", "your_location_data");
post_dict.put("group", "your_group_data");
post_dict.put("time", "your_time_data");
JSONArray jarr = new JSONArray();
JSONObject jonj = new JSONObject();
jonj.put("mac","your_mac_data");
jonj.put("rssi","your_rssi_data");
jarr.put(jonj);
post_dict.put("wifi-fingerprint", jarr);
} catch (JSONException e) {
e.printStackTrace();
}
new YourAsyncTask().execute(String.valueOf(post_dict));
//Actual Async Task Class
public class YourAsyncTask extends AsyncTask<String, String, String> {
ProgressDialog progressDialog;
protected void onPreExecute() {
progressDialog = ProgressDialog.show(MainActivity.this,
"Please Wait...",
"Registering Device");
super.onPreExecute();
}
protected String doInBackground(String... params) {
String JsonResponse = null;
String JsonDATA = params[0];
HttpURLConnection urlConnection = null;
BufferedReader reader = null;
try {
URL url = new URL("ml2.internalpositioning.com/track");
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setDoOutput(true);
// is output buffer writter
urlConnection.setRequestMethod("POST");
urlConnection.setRequestProperty("Content-Type", "application/json");
urlConnection.setRequestProperty("Accept", "application/json");
//set headers and method
Writer writer = new BufferedWriter(new OutputStreamWriter(urlConnection.getOutputStream(), "UTF-8"));
writer.write(JsonDATA);
// json data
writer.close();
InputStream inputStream = urlConnection.getInputStream();
//input stream
StringBuffer buffer = new StringBuffer();
if (inputStream == null) {
// Nothing to do.
return null;
}
reader = new BufferedReader(new InputStreamReader(inputStream));
String inputLine;
while ((inputLine = reader.readLine()) != null)
buffer.append(inputLine + "\n");
if (buffer.length() == 0) {
// Stream was empty. No point in parsing.
return null;
}
JsonResponse = buffer.toString();
//response data
try {
//send to post execute
return JsonResponse;
} catch (Exception e) {
e.printStackTrace();
}
return null;
} catch (IOException e) {
e.printStackTrace();
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
if (reader != null) {
try {
reader.close();
} catch (final IOException e) {
}
}
}
return null;
}
@Override
protected void onPostExecute(String result) {
if (progressDialog != null)
progressDialog.dismiss();
super.onPostExecute(result);
//Do something with result
}
}
我也试着发一个http帖子。我从上面获取代码并根据我的情况进行更改。但不幸的是有些不对劲。
我想将日期发送到我的Yamaha AV接收器RX-A1080。有一个Web界面，我在Firefox浏览器中记录了HTTP POST命令。 Firefox浏览器还以紧凑的CURL命令语法提供数据，因此您可以在以下行中更好地查看HTTP POST命令的数据：
(as a CURL Command)
curl
'http://192.168.0.24/YamahaRemoteControl/ctrl'
-H 'User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0'
-H 'Accept: */*'
-H 'Accept-Language: de,en-US;q=0.7,en;q=0.3'
--compressed
-H 'Referer: http://192.168.0.24/Setup/'
-H 'Content-Type: text/xml'
-H 'Connection: keep-alive'
--data '<?xml version="1.0" encoding="utf-8"?><YAMAHA_AV cmd="PUT"><System><Speaker_Preout><Pattern_1><PEQ><Manual_Data><Front_L><Band_7><Q>0.500</Q></Band_7></Front_L></Manual_Data></PEQ></Pattern_1></Speaker_Preout></System></YAMAHA_AV>'
我转换为：https://curl.trillworks.com/#json并得到这个：
{
"url":"http://192.168.0.24/YamahaRemoteControl/ctrl",
"raw_url":"http://192.168.0.24/YamahaRemoteControl/ctrl",
"method":"post",
"headers":
{
"User-Agent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0)
Gecko/20100101 Firefox/62.0",
"Accept":"*/*",
"Accept-Language":"de,en-US;q=0.7,en;q=0.3",
"Referer":"http://192.168.0.24/Setup/",
"Content-Type":"text/xml",
"Connection":"keep-alive"
},
"data":
{
"<?xml version":"\"1.0\" encoding=\"utf-8\"?><YAMAHA_AV cmd=\"PUT\">
<System><Speaker_Preout><Pattern_1><PEQ><Manual_Data><Front_L><Band_7><Q>0.500</Q></Band_7></Front_L></Manual_Data></PEQ></Pattern_1></Speaker_Preout></System></YAMAHA_AV>"
}
}
我编写的代码是:(我不确定JSONObject数据中是否有很多斜杠???）
// Gesamt JSON Object
JSONObject post_dict = new JSONObject();
try {
post_dict.put("url", "http://192.168.0.24/YamahaRemoteControl/ctrl");
post_dict.put("raw_url", "http://192.168.0.24/YamahaRemoteControl/ctrl");
post_dict.put("method", "post");
// headers - JSON Object ////////////////////////////////////////////
JSONObject headers = new JSONObject();
headers.put("User-Agent","Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0");
headers.put("Accept","*/*");
headers.put("Accept-Language","de,en-US;q=0.7,en;q=0.3");
headers.put("Referer","http://192.168.0.24/Setup/");
headers.put("Content-Type","text/xml");
headers.put("Connection","keep-alive");
post_dict.put("headers", headers);
// data - JSON Object ////////////////////////////////////////////
JSONObject data = new JSONObject();
data.put("<?xml version","\\\"1.0\\\" encoding=\\\"utf-8\\\"?><YAMAHA_AV cmd=\\\"PUT\\\"><System><Speaker_Preout><Pattern_1><PEQ><Manual_Data><Front_L><Band_7><Gain><Val>-200</Val><Exp>1</Exp><Unit>dB</Unit></Gain></Band_7></Front_L></Manual_Data></PEQ></Pattern_1></Speaker_Preout></System></YAMAHA_AV>");
post_dict.put("data", data);
} catch (JSONException e) {
e.printStackTrace();
}
new YourAsyncTask().execute(String.valueOf(post_dict));
有人会说我错了:-(
有关Firefox完成的录制命令的更多信息，您可以看到以下几行。 （但它们与CURL命令类似）
New Request
============
POST http://192.168.0.24/YamahaRemoteControl/ctrl
Request-Header:
===============
Host: 192.168.0.24
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0
Accept: */*
Accept-Language: de,en-US;q=0.7,en;q=0.3
Accept-Encoding: gzip, deflate
Referer: http://192.168.0.24/Setup/
Content-Type: text/xml
Content-Length: 272
Connection: keep-alive
Request-Body:
=============
<?xml version="1.0" encoding="utf-8"?>
<YAMAHA_AV cmd="PUT">
<System>
<Speaker_Preout>
<Pattern_1>
<PEQ>
<Manual_Data>
<Front_L>
<Band_7>
<Gain>
<Val>-10</Val>
<Exp>1</Exp>
<Unit>dB</Unit>
</Gain>
or
<Freq>1.26 kHz</Freq>
or
<Q>0.500</Q>
</Band_7>
</Front_L>
</Manual_Data>
</PEQ>
</Pattern_1>
</Speaker_Preout>
</System>
</YAMAHA_AV>
我的错误是我的数据不是json对象。我只需要将“数据”作为字符串发送。然后它工作;-)