ArcGis：Esri 地图“用于访问安全服务的令牌无效”

Question

我是 arcgis 和 esri 地图的新手，我正在尝试在两点之间建立路线， 这是我的代码：

map.setOnLongPressListener(new OnLongPressListener() {

        private static final long serialVersionUID = 1L;

        public boolean onLongPress(final float x, final float y) {

            grahpicslayer.removeAll();

            final Point loc = map.toMapPoint(x, y);


            grahpicslayer.addGraphic(new Graphic(loc, new SimpleMarkerSymbol(Color.RED, 20, SimpleMarkerSymbol.STYLE.CIRCLE)));

            //Display the red color diamond graphics
            map.addLayer(grahpicslayer);

            //zoom the map to the location
            map.zoomToResolution(loc, 20.0);


            new Thread(new Runnable() {
                @Override
                public void run() {


                    // new code
                    try {

                        String CLIENT_SECRET = "";
                        String CLIENT_ID = "";


                        //Prepare user credentials
                        UserCredentials userCredentials = new UserCredentials();
                        userCredentials.setAuthenticationType(UserCredentials.AuthenticationType.TOKEN);
                        userCredentials.setSSLRequired(false);
                        userCredentials.setUserToken(CLIENT_ID, CLIENT_SECRET);



            /*initialize RouteTask*/
                        String routeTaskURL = "https://route.arcgis.com/arcgis/rest/services/World/Route/NAServer/Route_World";
                        RouteTask rt = RouteTask.createOnlineRouteTask(routeTaskURL, userCredentials);
                        RouteParameters rp = rt.retrieveDefaultRouteTaskParameters();
                        NAFeaturesAsFeature rfaf = new NAFeaturesAsFeature();

                        // Convert point to EGS (decimal degrees)
                        Point p = (Point) GeometryEngine.project(loc, wm,
                                egs);

                        //mlocation is your latitude and longitude point provided by GPS location in decimal degrees
                        StopGraphic point1 = new StopGraphic(mLocation);
                        StopGraphic point2 = new StopGraphic(p);

                        String message = "point 1 == " + ((point1 == null) ? "null" : point1.getName()) + "point 2 == " + ((point2 == null) ? "null" : point2.getName());

                        Message msg = Message.obtain(); // Creates an new Message instance
                        msg.obj = message; // Put the string into Message, into "obj" field.
                        msg.setTarget(h); // Set the Handler
                        msg.sendToTarget(); //Send the message


                        rfaf.setFeatures(new Graphic[]{point1, point2});

                        rfaf.setCompressedRequest(true);
                        rp.setStops(rfaf);
                        rp.setOutSpatialReference(wm);

                        RouteResult mresults = rt.solve(rp);

                    } catch (Exception e) {

                        String message = "ex : " + e.toString();

                        Message msg = Message.obtain(); // Creates an new Message instance
                        msg.obj = message; // Put the string into Message, into "obj" field.
                        msg.setTarget(h); // Set the Handler
                        msg.sendToTarget(); //Send the message
                    }
                }
            }).start();
            return true;
        }

    });

根据位置变化监听器获取当前位置的代码

/**
     * If location changes, update our current location. If being found for
     * the first time, zoom to our current position with a resolution of 20
     */
    public void onLocationChanged(Location loc) {
        if (loc == null)
            return;
        boolean zoomToMe = (mLocation == null) ? true : false;
        mLocation = new Point(loc.getLongitude(), loc.getLatitude());
        if (zoomToMe) {
            Point p = (Point) GeometryEngine.project(mLocation, egs, wm);
            map.zoomToResolution(p, 20.0);
        }
    }

运行此代码后，我遇到此错误：

com.esri.core.io.EsriSecurityException : 用于访问安全服务的令牌无效 - https://route.arcgis.com/arcgis/rest/services/World/Route/NAServer/Route_World

Answer 1

您尝试在代码中设置令牌值，但未分配任何值，变量名称（CLIENT_SECRET 和 CLIENT_ID）也暗示使用 OAuth2 登录应用程序。

您有 3 个选项用于访问路由服务，用户 OAuth2 登录、应用 OAuth2 登录或基于令牌的用户登录。首选方法是用户 OAuth2 登录，这样登录的用户将使用他们的 ArcGIS Online 指定用户帐户，并且所需的任何积分都来自他们的订阅。开发人员门户上有一个code sample 用于用户群 OAuth2 登录。

如果您仍想使用基于令牌的登录，则需要为 UserCredential 设置用户名和密码，以便生成令牌或使用您已经调用但传入有效令牌字符串的方法。

如果您还没有阅读开发者门户上的authentication documentation，我建议您阅读它，因为它提供了每个选项的全面描述。