请求超过Fusion Tables层中的最大URL长度 [英] Requests exceeding maximum URL length in Fusion Tables layer
本文介绍了请求超过Fusion Tables层中的最大URL长度的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在Google地图上使用Fusion Tables图层。如果我添加一个大的where条件（在1000多个项目中），则该图层不会加载。
I'm using Fusion Tables layer on Google Maps. If I add a large where condition (where in 1000+ items), the layer does not load.
<!DOCTYPE html>
<html>
<head>
<meta content="initial-scale=1.0, user-scalable=no" name="viewport">
<meta charset="utf-8">
<title>GEO View</title>
<style>
html,
body {
height: 100%;
margin: 0;
padding: 0;
}
#map {
height: 100%;
zoom: 0.7;
-moz-transform: scale(0.8);
-moz-transform-origin: 0 0;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
var arr = ['37159'];
var draw_str = ['06037', '06043', '06057', '06065', '06079', '06097', '08011', '08037', '08051', '08069', '08099', '08119', '12041', '12075', '12113', '12123', '13015', '13029', '13095', '13151', '13161', '13169', '13197', '13209', '13213', '13235', '13263', '13267', '13273', '13275', '13293', '13305', '13319', '13990', '16017', '16023', '16047', '16049', '17015', '17043', '17053', '17077', '17079', '17081', '17129', '17141', '17197', '18019', '18043', '18067', '18105', '18115', '18119', '18127', '18147', '19013', '19031', '19067', '19079', '19087', '19111', '19113', '19127', '19153', '19161', '19169', '19175', '19187', '20009', '20019', '20037', '20039', '20051', '20059', '20067', '20087', '01017', '01035', '01053', '01073', '01081', '01127', '02282', '05007', '05031', '05039', '05053', '05067', '05087', '05089', '05119', '05123', '37025', '37037', '37057', '37077', '37123', '37153', '37157', '37159', '37193', '38017', '38045', '38051', '38065', '38101', '39007', '39019', '39021', '39049', '39057', '39059', '39063', '39069', '39081', '39089', '39091', '39097', '39101', '39139', '39153', '39167', '40003', '40019', '40087', '40129', '40153', '41011', '41027', '41049', '42013', '42021', '42035', '42037', '42041', '42055', '42063', '42073', '42077', '42085', '42091', '42109', '42115', '42131', '72027', '72051', '72055', '72057', '72065', '72073', '72087', '72129', '45033', '45035', '45059', '45071', '20095', '20099', '20101', '20107', '20109', '20117', '20133', '20139', '20177', '20195', '20209', '21029', '21031', '21037', '21059', '21061', '21083', '21113', '21127', '21157', '21173', '21211', '21217', '21229', '21239', '22013', '22035', '22049', '22055', '22065', '22079', '22103', '23005', '23025', '4001', '4003', '4005', '4007', '4009', '4011', '4012', '4013', '4015', '4017', '4019', '4021', '4023', '4025', '4027', '5001', '5003', '5005', '5007', '5009', '5011', '5013', '5015', '5017', '5019', '5021', '5023', '5025', '5027', '5029', '5031', '5033', '5035', '5037', '5039', '5041', '5043', '5045', '5047', '5049', '5051', '5053', '5055', '5057', '5059', '5061', '5063', '5065', '5067', '5069', '5071', '5073', '5075', '5077', '5079', '5081', '5083', '5085', '5087', '5089', '5091', '5093', '5095', '5097', '5099', '5101', '5103', '5105', '5107', '5109', '5111', '5113', '5115', '5117', '5119', '5121', '5123', '5125', '5127', '5129', '5131', '5133', '5135', '5137', '5139', '5141', '5143', '5145', '5147', '5149', '6001', '6003', '6005', '6007', '6009', '6011', '6013', '6015', '6017', '6019', '6021', '6023', '6025', '6027', '6029', '6031', '6033', '6035', '6037', '6039', '6041', '6043', '6045', '6047', '6049', '6051', '6053', '6055', '6057', '6059', '6061', '6063', '6065', '6067', '6069', '6071', '6073', '6075', '6077', '6079', '6081', '6083', '6085', '6087', '6089', '6091', '6093', '6095', '6097', '6099', '6101', '6103', '6105', '6107', '6109', '6111', '6113', '6115', '8001', '8003', '8005', '8007', '8009', '8011', '8013', '8014', '8015', '8017', '8019', '8021', '8023', '8025', '8027', '8029', '8031', '8033', '8035', '8037', '8041', '8039', '8043', '8045', '8047', '8049', '8051', '8053', '8055', '8057', '8059', '8061', '8063', '8065', '8067', '8069', '8071', '8073', '8075', '8077', '8079', '8081', '8083', '8085', '8087', '8089', '8091', '8093', '8095', '8097', '8099', '8101', '8103', '8105', '8107', '8109', '8111', '8113', '8115', '8117', '8119', '8121', '8123', '8125', '9001', '9003', '9005', '9007', '9009', '9011', '9013', '9015', '10001', '10003', '10005', '11001', '12001', '12003', '12005', '12007', '12009', '12011', '12013', '12015', '12017', '12019', '12021', '12023', '12027', '12029', '12031', '12033', '12035', '12037', '12039', '12041', '12043', '12045', '12047', '12049', '12051', '12053', '12055', '12057', '12059', '12061', '12063', '12065', '12067', '12069', '12071', '12073', '12075', '12077', '12079', '12081', '12083', '12085', '12086', '12087', '12089', '12091', '12093', '12095', '12097', '12099', '12101', '12103', '12105', '12107', '12109', '12111', '12113', '12115', '12117', '12119', '12121', '12123', '12125', '12127', '12129', '12131', '12133', '13001', '13003', '13005', '13007', '13009', '13011', '13013', '13015', '13017', '13019', '13021', '13023', '13025', '13027', '13029', '13031', '13033', '13035', '13037', '13039', '13043', '13045', '13047', '13049', '13051', '13053', '13055', '13057', '13059', '13061', '13063', '13065', '13067', '13069', '13071', '13073', '13075', '13077', '13079', '13081', '13083', '13085', '13089', '13087', '13091', '13093', '13095', '13097', '13099', '13101', '13103', '13105', '13107', '13109', '13111', '13113', '13115', '13117', '13119', '13121', '13123', '13125', '13127', '13129', '13131', '13133', '13135', '13137', '13139', '13141', '13143', '13145', '13147', '13149', '13151', '13153', '13155', '13157', '13159', '13161', '13163', '13165', '13167', '13169', '13171', '13173', '13175', '13177', '13179', '13181', '13183', '13185', '13187', '13189', '13191', '13193', '13195', '13197', '13199', '13201', '13205', '13207', '13209', '13211', '13213', '13215', '13217', '13219', '13221', '13223', '13225', '13227', '13229', '13231', '13233', '13235', '13237', '13239', '13241', '13243', '13245', '13247', '13249', '13251', '13253', '13255', '13257', '13259', '13261', '13263', '13265', '13267', '13269', '13271', '13273', '13275', '13277', '13279', '13281', '13283', '13285', '13287', '13289', '13291', '13293', '13295', '13297', '13299', '13301', '13303', '13305', '13307', '13309', '13311', '13313', '13315', '13317', '13319', '13321', '15001', '15003', '15005', '15007', '15009', '16001', '16003', '16005', '16007', '16009', '16011', '16013', '16015', '16017', '16019', '16021', '16023', '16025', '16027', '16029', '16031', '16033', '16035', '16037', '16039', '16041', '16043', '16045', '16047', '16049', '16051', '16053', '16055', '16057', '16059', '16061', '16063', '16065', '16067', '16069', '16071', '16073', '16075', '16077', '16079', '16081', '16083', '16085', '16087', '17001', '17003', '17005', '17007', '17009', '17011', '17013', '17015', '17017', '17019', '17021', '17023', '17025', '17027', '17029', '17031', '17033', '17035', '17037', '17039', '17041', '17043', '17045', '17047', '17049', '17051', '17053', '17055', '17057', '17059', '17061', '17063', '17065', '17067', '17069', '17071', '17073', '17075', '17077', '17079', '17081', '17083', '17085', '17087', '17089', '17091', '17093', '17095', '17097', '17099', '17101', '17103', '17105', '17107', '17109', '17111', '17113', '17115', '17117', '17119', '17121', '17123', '17125', '17127', '17129', '17131', '17133', '17135', '17137', '17139', '17141', '17143', '17145', '17147', '17149', '17151', '17153', '17155', '17157', '17159', '17161', '17163', '17165', '17167', '17169', '17171', '17173', '17175', '17177', '17179', '17181', '17183', '17185', '17187', '17189', '17191', '17193', '17195', '17197', '17199', '17201', '17203', '18001', '18003', '18005', '18007', '18009', '18011', '18013', '18015', '18017', '18019', '18021', '18023', '18025', '18027', '18029', '18031', '18033', '18035', '18037', '18039', '18041', '18043', '18045', '18047', '18049', '18051', '18053', '18055', '18057', '18059', '18061', '18063', '18065', '18067', '18069', '18071', '18073', '18075', '18077', '18079', '18081', '18083', '18085', '18087', '18089', '18091', '18093', '18095', '18097', '18099', '18101', '18103', '18105', '18107', '18109', '18111', '18113', '18115', '18117', '18119', '18121', '18123', '18125', '18127', '18129', '18131', '18133', '18135', '18137', '18139', '18141', '18143', '18145', '18147', '18149', '18151', '18153', '18155', '18157', '18159', '18161', '18163', '18165', '18167', '18169', '18171', '18173', '18175', '18177', '18179', '18181', '18183', '19001', '19003', '19005', '19007', '19009', '19011', '19013', '19015', '19017', '19019', '19021', '19023', '19025', '19027', '19029', '19031', '19033', '19035', '19037', '19039', '19041', '19043', '19045', '19047', '19049', '19051', '19053', '19055', '19057', '19059', '19061', '19063', '19065', '19067', '19069', '19071', '19073', '19075', '19077', '19079', '19081', '19083', '19085', '19087', '19089', '19091', '19093', '19095', '19097', '19099', '19101', '19103', '19105', '19107', '19109', '19111', '19113', '19115', '19117', '19119', '19121', '19123', '19125', '19127', '19129', '19131', '19133', '19135', '19137', '19139', '19141', '19143', '19145', '19147', '19149', '19151', '19153', '19155', '19157', '19159', '19161', '19163', '19165', '19167', '19169', '19171', '19173', '19175', '19177', '19179', '19181', '19183', '19185', '19187', '19189', '19191', '19193', '19195', '19197', '20001', '20003', '20005', '20007', '20009', '20011', '20013', '20015', '20017', '20019', '20021', '20023', '20025', '20027', '20029', '20031', '20033', '20035', '20037', '20039', '20041', '20043', '20045', '20047', '20049', '20051', '20053', '20055', '20057', '20059', '20061', '20063', '20065', '20067', '20069', '20071', '20073', '20075', '20077', '20079', '20081', '20083', '20085', '20087', '20089', '20091', '20093', '20095', '20097', '20099'];
function initMap() {
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 5,
disableDefaultUI: true,
center: {
lat: 38.755724,
lng: -96.492369
}
});
mark();
//Draw layer Function
function mark() {
layer = new google.maps.FusionTablesLayer({
query: {
select: 'geometry',
from: '1xdysxZ94uUFIit9eXmnw1fYc6VcQiXhceFd_CVKa'
},
styles: [{
polygonOptions: {
fillColor: '#000000',
fillOpacity: 0.001
}
}, {
where: "'GEO_ID2' IN (" + draw_str.toString() + ")",
polygonOptions: {
fillOpacity: 0.3
}
}]
});
layer.setMap(map);
}
}
</script>
<script async defer src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBMtoh9P3UkoxbXndKu_HOP7KsVwTRvxGU&callback=initMap"></script>
</body>
</html>
我认为这是一个GET请求长度问题。有办法克服这个问题吗？使用POST代替GET或其他替代方法的一些方法。
I figured it is a GET request length issue. Is there a way to overcome this? Some way of using POST instead of GET, or other alternatives.
请注意上面的where子句只是一个例子，它应该适用于更多的GEO_ID2。
Please note the above where clause is just an example, it should work for more GEO_ID2.
推荐答案
如果你使用 Fusion Tables层，您的地图图块请求将以长查询字符串超过最大URL长度。没有使用POST而不是GET请求的图层设置，因此我们必须通过过滤客户端的地图结果来避免此问题。
If you use the Fusion Tables layer, your map tile requests will end up with long query strings exceeding the maximum URL length. There are no layer settings to use POST instead of GET requests, so we'll have to avoid the problem by filtering map results client-side.
受这个答案，我们可以：
-
使用 Fusion Tables API ，立即请求所有地图数据。结果将是巨大的，但GET请求很小：
Use the Fusion Tables API, request all map data at once. The results will be huge, but the GET request is small:
https://www.googleapis.com/fusiontables/v2/query?sql=select GEO_ID2, geometry from 1xdysxZ94uUFIit9eXmnw1fYc6VcQiXhceFd_CVKa&key=<YOUR_API_KEY>
Wrangle数据。 几何列是在GeoJSON中。返回格式存在一些问题：最外层的包装对象不一致，多边形的坐标列表没有相同的起点和终点。
Wrangle data. The "geometry" column is in GeoJSON. There are a few issues with the returned format: the outermost wrapping object is inconsistent, and the coordinate lists of the polygons don't have the same start and end points.
使用数据层。为这些功能添加样式和交互性已有详细记录。
Draw the GeoJSON features on the map using the Data layer. Adding styles and interactivity for the features is well-documented.
对于此演示，只有一小部分ID是使用，并使用数组的 indexOf（）查找ID。使用更多ID时，请考虑使用更快的查找表。
For this demo, only a small set of IDs is used, and IDs are looked up using array's indexOf(). With more IDs, consider using a faster lookup table.
html,
body,
#map {
height: 100%;
margin: 0;
padding: 0;
}
<div id="map"></div>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?v=3"></script>
<script>
var ids = ['17015', '17043', '17053', '17077', '17079', '17081', '17129', '17141', '17197', '18019', '18043', '18067'];
var map;
function initialize() {
var mapOptions = {
zoom: 7,
disableDefaultUI: true,
center: {
lat: 41.8781,
lng: -87.6298
}
};
map = new google.maps.Map(document.getElementById('map'), mapOptions);
map.data.setStyle({
strokeWeight: 0,
fillOpacity: 0.3,
});
// Basic interactivity
map.data.addListener('mouseover', function(event) {
map.data.revertStyle();
map.data.overrideStyle(event.feature, {
fillColor: '#FF0000',
fillOpacity: 0.5,
});
});
map.data.addListener('mouseout', function(event) {
map.data.revertStyle();
});
// Send Fusion Tables JSONP request
var url = ['https://www.googleapis.com/fusiontables/v2/query'];
url.push('?sql=' + encodeURIComponent('SELECT GEO_ID2, geometry FROM 1xdysxZ94uUFIit9eXmnw1fYc6VcQiXhceFd_CVKa'));
url.push('&callback=drawMap');
url.push('&key=AIzaSyBMtoh9P3UkoxbXndKu_HOP7KsVwTRvxGU');
var script = document.createElement('script');
script.src = url.join('');
document.getElementsByTagName('body')[0].appendChild(script);
}
function drawMap(data) {
var rows = data['rows'];
for (var i = 0, rc = rows.length; i < rc; i++) {
if (ids.indexOf(rows[i][0]) !== -1) {
var geojson = {
type: 'Feature',
properties: {
name: rows[i][0], // GEO_ID2
}
}
// Second column: geometry (GeoJSON)
var geometries = rows[i][1]['geometries'];
if (geometries) {
geojson['geometry'] = rows[i][1];
for (var g = 0, len = geometries.length; g < len; g++) {
validateLinearRings(geometries[g]['coordinates']);
}
} else {
geojson['geometry'] = rows[i][1]['geometry'];
validateLinearRings(geojson['geometry']['coordinates']);
}
map.data.addGeoJson(geojson);
}
}
}
function validateLinearRings(coordinates) {
var len = coordinates.length;
for (var i = 0; i < len; i++) {
// Add the first point as the last, closing the loop
// http://geojson.org/geojson-spec.html#linestring
coordinates[i].push(coordinates[i][0]);
}
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
这篇关于请求超过Fusion Tables层中的最大URL长度的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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