添加 MultiPolygon 几何体时出现语法错误

Question

我尝试在我的 postgre 数据库中添加一个 MultiPolygon 几何图形，所以我使用了这个 SQL 语句：

'INSERT INTO potentiel_foncier_ccry (nature, geom, nbr_lgmt)  VALUES  ('+ mysql.escape(nature)+', ST_GeomFromText(MULTIPOLYGON((("'+mysql.escape(geom)+')))",2154),"'+ mysql.escape(logement) +'")'

但是它失败了，我有这个错误：

error: syntax error at end of input

我的几何形状是这样的：

有什么问题吗？提前谢谢你

PS: 我使用 Nodejs 进行编码

Answer 1

（声誉太低，无法发表评论）查看 postgis examples，MultiPolygon 应该看起来像这样（只有圆括号）：

SELECT ST_GeomFromText('多边形(((-71.1031880899493 42.3152774590236, -71.1031627617667 42.3152960829043,-71.102923838298 42.3149156848307, -71.1023097974109 42.3151969047397,-71.1019285062273 42.3147384934248, -71.102505233663 42.3144722937587,-71.10277487471 42.3141658254797, -71.103113945163 42.3142739188902,-71.10324876416 42.31402489987, -71.1033002961013 42.3140393340215,-71.1033488797549 42.3139495090772, -71.103396240451 42.3138632439557,-71.1041521907712 42.3141153348029, -71.1041411411543 42.3141545014533,-71.1041287795912 42.3142114839058, -71.1041188134329 42.3142693656241,-71.1041112482575 42.3143272556118, -71.1041072845732 42.3143851580048,-71.1041057218871 42.3144430686681, -71.1041065602059 42.3145009876017,-71.1041097995362 42.3145589148055, -71.1041166403905 42.3146168544148,-71.1041258822717 42.3146748022936, -71.1041375307579 42.3147318674446,-71.1041492906949 42.3147711126569, -71.1041598612795 42.314808571739,-71.1042515013869 42.3151287620809, -71.1041173835118 42.3150739481917,-71.1040809891419 42.3151344119048, -71.1040438678912 42.3151191367447,-71.1040194562988 42.3151832057859, -71.1038734225584 42.3151140942995,-71.1038446938243 42.3151006300338, -71.1038315271889 42.315094347535,-71.1037393329282 42.315054824985, -71.1035447555574 42.3152608696313,-71.1033436658644 42.3151648370544, -71.1032580383161 42.3152269126061,-71.103223066939 42.3152517403219, -71.1031880899493 42.3152774590236)), ((-71.1043632495873 42.315113108546,-71.1043583974082 42.3151211109857, -71.1043443253471 42.3150676015829,-71.1043850704575 42.3150793250568,-71.1043632495873 42.315113108546)))',4326);

您确定 mysql.escape(geom) 创建了这个语法吗？

Answer 2

如果您通过 OpenLayers 应用程序进行转换，您可以转换格式

var geom = [[[[101, 201],
              [102, 202],
              [103, 203],
              [101, 201]]]];

var wkt = new ol.format.WKT().writeGeometry(new ol.geom.MultiPolygon(geom));

console.log(wkt);  // 'MULTIPOLYGON(((101 201,102 202,103 203,101 201)))'

假设您的 SQL 的其余部分是正确的，您仍然需要 ST_GeomFromText 和 2154:

var geom1 = [[[[101, 201],
               [102, 202],
               [103, 203],
               [101, 201]]]];

var wkt = new ol.format.WKT().writeGeometry(new ol.geom.MultiPolygon(geom1));

var geom2 = "ST_GeomFromText('" + wkt + "'),2154)"

 'INSERT INTO potentiel_foncier_ccry (nature, geom, nbr_lgmt) VALUES ('+ mysql.escape(nature)+', '+geom2+','+ mysql.escape(logement) +')'

添加 MultiPolygon 几何体时出现语法错误

Syntax error when adding a MultiPolygon geometry

javascript

postgresql

geometry

openlayers

node.js