firebase（fcm）表示401未经授权 [英] firebase (fcm) says 401 unauthorized

问题描述

  private void sendMsg（）{
 DBManager dbManager = DBManager.getInstance（）; 
 ArrayList< String> firebaseIds; 
 
尝试{
 ResultSet rs = dbManager.getRegisteredFirebaseDevice（）; （rs.next（））{
 System.out.println（rs.getString（1））; 
 firebaseIds.add（rs.getString（1））; 
} 
} catch（SQLException e）{
 e.printStackTrace（）; 
} 
 
字符串url =https://fcm.googleapis.com/fcm/send; 
 URL obj =新的URL（url）; 
 HttpURLConnection con =（HttpURLConnection）obj.openConnection（）; 
 
 //添加reuqest头文件
 con.setRequestMethod（POST）; 
 con.setRequestProperty（Authorization：key，AIzaSyAl6S936qt_NKKFwwbd-NEmiSGIL7G_yJc）; 
 con.setRequestProperty（Content-Type，application / json）; 
 // String msg =添加了新的设计+ getCategory（designCategory）+。Design no。+ designNo; 
 // String urlParameters =data.msg =+ msg +& registration_id =+ firebaseIds.get（0）; 
 
 JSONObject msg = new JSONObject（）; 
 msg.put（msg，添加新设计+ getCategory（designCategory）+。Design no。+ designNo）; 
 
 
 JSONObject parent = new JSONObject（）; 
 
 parent.put（to，firebaseIds.get（0））; 
 parent.put（data，msg）; 
 
 //字符串urlParameters =registration_id =+ firebaseIds.get（0）; 
 //发送帖子请求
 con.setDoOutput（true）; 
 
 
 OutputStreamWriter wr = new OutputStreamWriter（con.getOutputStream（））; 
 wr.write（parent.toString（））; 
 
 // DataOutputStream wr = new DataOutputStream（con.getOutputStream（））; 
 // wr.writeBytes（urlParameters）; 
 // wr.flush（）; 
 // wr.close（）; 
 
 int responseCode = con.getResponseCode（）; 
 System.out.println（\\\
发送'POST'请求到URL：+ url）; 
 System.out.println（Post parameters：+ parent.toString（））; 
 System.out.println（Response Code：+ responseCode ++ con.getResponseMessage（））; 
 
 
 
 
 $ b当我调用上面的代码的时候，  401未授权。我无法理解为什么我得到这个错误。我使用了正确的服务器密钥。在我使用的策略中是否有语法错误或错误？ 
 
 
 
我遵循 https://firebase.google.com/docs/cloud-messaging/server#implementing-http-connection-server-protocol 文档
 
 
 
  con.setRequestProperty（Authorization：key ，< YOUR API KEY>）; 
  
： 
 
 
  con.setRequestProperty（Authorization，key =< YOUR API KEY>）; 
  
 
private void sendMsg() {
    DBManager dbManager = DBManager.getInstance();
    ArrayList<String> firebaseIds;

    try {
        ResultSet rs= dbManager.getRegisteredFirebaseDevice();
        while(rs.next()){
            System.out.println(rs.getString(1));
            firebaseIds.add(rs.getString(1));
        }
    } catch (SQLException e) {
        e.printStackTrace();
    }

    String url = "https://fcm.googleapis.com/fcm/send";
    URL obj = new URL(url);
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();

    // add reuqest header
    con.setRequestMethod("POST");
    con.setRequestProperty("Authorization: key", "AIzaSyAl6S936qt_NKKFwwbd-NEmiSGIL7G_yJc");
    con.setRequestProperty("Content-Type", "application/json");
    // String msg="New design added in "+getCategory(designCategory)+". Design no."+designNo;
    // String urlParameters = "data.msg="+msg+"&registration_id="+firebaseIds.get(0);

    JSONObject msg=new JSONObject();
    msg.put("msg","New design added in "+getCategory(designCategory)+". Design no."+designNo);


    JSONObject parent=new JSONObject();

    parent.put("to", firebaseIds.get(0));
    parent.put("data", msg);

    // String urlParameters = "registration_id="+firebaseIds.get(0);
    // Send post request
    con.setDoOutput(true);


    OutputStreamWriter wr= new OutputStreamWriter(con.getOutputStream());
    wr.write(parent.toString());

    // DataOutputStream wr = new DataOutputStream(con.getOutputStream());
    // wr.writeBytes(urlParameters);
    // wr.flush();
    // wr.close();

    int responseCode = con.getResponseCode();
    System.out.println("\nSending 'POST' request to URL : " + url);
    System.out.println("Post parameters : " + parent.toString());
    System.out.println("Response Code : " + responseCode+" "+con.getResponseMessage());

}
When I call the above code, it gives me response as 401 Unauthorized. I am not able to understand why I am getting this error. I have used proper server key. Is there any syntax error or anything wrong in the strategy used by me. 


I have followed the https://firebase.google.com/docs/cloud-messaging/server#implementing-http-connection-server-protocol documentation
解决方案
Try replacing:
con.setRequestProperty("Authorization: key", "<YOUR API KEY>");
with:
con.setRequestProperty("Authorization", "key=<YOUR API KEY>");


                        
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