Question

我正在使用ESRI在SharePoint 2010中对地址进行地理编码。我能够在console.log中获取地址的响应文本，但我无法弄清楚如何解析x和y来自候选人。有两个目标：1）解析候选[0] x和y，2）如果可能，在地图上映射其他可能的候选（显示它们），这样用户就可以看到另一个点是否真正意味着什么。

这是我的json输出：

{"spatialReference":{"wkid":4326,"latestWkid":4326},"candidates":[{"address":"Detroit, Michigan, United States","location":{"x":-83.04574875899965,"y":42.3314259010005},"score":100,"attributes":{},"extent":{"xmin":-83.188749999999999,"ymin":42.188426,"xmax":-82.902749999999997,"ymax":42.474426000000001}}]}

这是我的javascript：

var request;
                if (window.XMLHttpRequest) {
                    request = new XMLHttpRequest();
                } else {
                    request = new ActiveXObject("Microsoft.XMLHTTP");
                }
                console.log('url used:'+url);
                request.open('GET', url);
                request.onreadystatechange = function() {
                    if ((request.readyState===4) && (request.status===200)) {
                        console.log('response: '+request.responseText);
                        var data = JSON.parse(request.responseText);

                        for (var key in data) {
                            console.log(data[key].value);
                        }

                        //var lat = data.spatialReference.candidates[0].address.x;
                        //console.log('lat:'+lat);
                        //var items = JSON.parse(request.responseText);
                        //var output = '<ul>';
                        //for (var key in items) {
                        //  output += '<li>' + items[key].name + '</li>';
                        //}
                        //output += '</ul>';
                        //document.getElementById('update').innerHTML = output;
                    }
                }
                request.send();

Answer 1

你应该查看每个data.canditates中的location对象，其中包含你需要的信息。

for (var i=0; i<= data.candidates.length; i++) {
   cand = data.candidates[i];
   if (cand) { 
     console.log(cand.location);
     console.log("x- " + cand.location.x);
     console.log("y- " + cand.location.y);
   }
 }

从候选responseText中解析ESRI JSON坐标

1 个答案: