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我知道有很多不同的情況，類似我的stackoverflow，但我只是無法建立連接。從Java或JS POST到GCM
我想要做的是發送一個簡單的推送通知給GCM。我發現我也嘗試發佈兩個鏈接。注意這兩個鏈接都在我找到的這個PHP腳本中工作。
https://gcm-http.googleapis.com/gcm/send
https://android.googleapis.com/gcm/send
我試圖從JS發送推送通知到GCM，但很多人都表示，這可能是由於安全問題沒有。到目前爲止，當我在Angular JS中執行我的代碼時，我從https://gcm-http.googleapis.com/gcm/send得到了405錯誤。狀態405意味着方法不被接受（參考鏈接http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html）。
這是JS的代碼。我有兩種方法，我嘗試過。
方法1：
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
//ite
}
};
var jsonCall = {
registration_id: "xxxxxxxxxxxxxxxxxxxxxxxxxxxx-AEQtUUWnCVH566xcwib4HinI16W3_g"
};
xmlhttp.open("POST", "https://gcm-http.googleapis.com/gcm/send", true);
xmlhttp.setRequestHeader("Content-type", "application/json");
xmlhttp.setRequestHeader("Authorization", "xxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
xmlhttp.send(jsonCall);
方法2
var jsonCall = {
registration_id: "xxxxxxxxxxxxxxxxxxxxxxxxxxxx-AEQtUUWnCVH566xcwib4HinI16W3_g"
};
$http({
method:'POST',
url: 'https://gcm-http.googleapis.com/gcm/send',
data: jsonCall,
headers: {
'Authorization': 'A1nxxxxxxxxxxxxxxxxxx',
'Content-type': 'application/json' }
})
這是我在Java中都試過了。請注意，我的項目不是作爲Android項目創建的，而是作爲普通的Java項目創建的。我在這裏得到一個411錯誤，所以我認爲我用作JSON的字符串不正確。請注意，如果使用GET，我會得到200。
方法3：
HttpURLConnection connection = null;
try {
//Create connection
String json ="{\"registration_ids\":[\"xxxxxxxxxxxxxxxxxxxxxxxxxxxxx-xxxxxxxxxxxxx\"]}";
URL url = new URL("https://gcm-http.googleapis.com/gcm/send");
connection = (HttpURLConnection)url.openConnection();
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
connection.setRequestProperty("Content-Length", "0");
connection.setRequestProperty("Authorization", "key="+"xxxxxxxxxxxxxxxxxxxxxxxxxx");
System.out.println(connection.getResponseCode());
InputStream stream = (InputStream) connection.getInputStream();
InputStreamReader isReader = new InputStreamReader(stream);
//put output stream into a string
BufferedReader br = new BufferedReader(isReader);
String line;
while((line = br.readLine()) != null){
System.out.println(line);
}
OutputStream os = connection.getOutputStream();
os.write(json.getBytes("UTF-8"));
os.flush();
os.close();
} catch(Exception e){
System.out.println(e);
}
如果有人可以看看這個，把我安置在正確的方向，我將不勝感激。
UPDATE：
我已經擺脫了那個411錯誤。我想這是因爲我從來沒有聯繫過。現在我得到了正確的200代碼，但推送通知不發送。我的JSON是正確的格式嗎？
HttpURLConnection connection = null;
try {
//Create connection
String json ="{\"registration_ids\":[\"APA91bGxHWapgmxgyvPceu85ArDMLaFekbTt5RGzy3gv1xtSO09tJbvnaeVLefBqNl_iBrctoZQ2AltSMfrXykq8-AEQtUUWnCVH566xcwib4HinI16W3_g\"]}";
URL url = new URL("https://gcm-http.googleapis.com/gcm/send");
connection = (HttpURLConnection)url.openConnection();
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/json");
connection.setRequestProperty("Authorization", "key=xxxxxxxxxxxxxxxxxxxxxxx");
connection.connect();
OutputStream os = connection.getOutputStream();
os.write(json.getBytes("UTF-8"));
System.out.println(connection.getResponseCode());
InputStream stream = (InputStream) connection.getInputStream();
InputStreamReader isReader = new InputStreamReader(stream);
//put output stream into a string
BufferedReader br = new BufferedReader(isReader);
String line;
while((line = br.readLine()) != null){
System.out.println(line);
}
os.flush();
os.close();
} catch(Exception e){
System.out.println(e);
}