[英]Not able to Parse a Json File
我想加載服務器上載的GeoJson文件
var promise = ('https://api.myjson.com/bins/31e3j');
that.map.data.loadGeoJson(promise);
這種情況很好
但是我想在本地加載此GeoJson文件,所以我分配了Json代碼,而是將服務器鏈接分配給一個變量,該變量既沒有錯誤也沒有得到O / P的提示。
var promise = jQuery.parseJSON ('{ "type": "FeatureCollection","crs":{"type": "name","properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84"}},"features": [{"type": "Feature", "properties": {"id": 1},"geometry": {"type": "Polygon", "coordinates": [ [ [ -83.52936044652942, 40.30230752849768], [ -83.52924865349425, 40.30230753872012], [ -83.52924666169983, 40.3021800251207 ], [ -83.52935848418728, 40.302181900418084 ], [ -83.52936044652942, 40.30230752849768]]]}}, ]}');
that.map.data.loadGeoJson(promise);
如有疑問,請通過lint / formatter運行它:
您在JSON中有一個錯誤,以逗號開頭,后面是幾個字符:
]]]}}, ]}');
^-------TROUBLE MAKER!
或者這很酷!
我也沒有任何錯誤
也許周圍的代碼吞沒了錯誤。 如果您使用var promise = jQuery.parseJSON('DODGY_JSON_HERE')
代碼並在控制台中運行它,則會看到錯誤:
Uncaught SyntaxError: Unexpected token ](…)
e.extend.parseJSON @jquery.min.js:2
(anonymous function) @VM270:2
InjectedScript._evaluateOn @VM268:875
InjectedScript._evaluateAndWrap @VM268:808
InjectedScript.evaluate @VM268:664
不像短絨布那樣方便,但是至少您會看到一個錯誤。
無效的JSON是不可解析的,顯然:
...snip...[ -83.52936044652942, 40.30230752849768]]]}}, ]}');
^----
因為那不是正確的JSON。 最后還有逗號。
{“ type”:“ FeatureCollection”,“ crs”:{“ type”:“ name”,“ properties”:{“ name”:“ urn:ogc:def:crs:OGC:1.3:CRS84”}},“ features“:[{” type“:” Feature“,” properties“:{” id“:1},” geometry“:{” type“:” Polygon“,” coordinates“:[[[--83.52936044652942,40.30230752849768] ,[-83.52924865349425,40.30230753872012],[-83.52924666169983,40.3021800251207],[-83.52935848418728,40.302181900418084],[--83.52936044652942,40.30230752849768]]]}]}}
這是正確的JSON:
{
"type": "FeatureCollection",
"crs": {
"type": "name",
"properties": {
"name": "urn:ogc:def:crs:OGC:1.3:CRS84"
}
},
"features": [
{
"type": "Feature",
"properties": {
"id": 1
},
"geometry": {
"type": "Polygon",
"coordinates": [
[
[
-83.52936044652942,
40.30230752849768
],
[
-83.52924865349425,
40.30230753872012
],
[
-83.52924666169983,
40.3021800251207
],
[
-83.52935848418728,
40.302181900418084
],
[
-83.52936044652942,
40.30230752849768
]
]
]
}
}
]
}
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