我正在嘗試將 GeoJSON 坐標拆分為單獨的緯度和經(jīng)度值，以達到所需的格式（如所需輸出中所示）。我有一個 GeoJSON 文件，通過它我只提取坐標值。這些坐標值存儲為字符串變量，如下所示 GeoJSON : ":[[[7.365046,46.948655],[7.365046,46.949254],[7.367558,46.949254],[7.367558,46.948655],[7.365046,46.948655]]]}}：如何從給定的字符串中分別提取緯度和經(jīng)度的特定值。從 GeoJSON 文件中提取坐標的代碼片段如下所示：String GeoJSON = GeoJSONFromFile().split("coordinates")[1];System.out.println("GeoJSON : " + GeoJSON );//Splitting within the bracketsString delims = "\\[(.*?)\\]";String[] tokens = GeoJSON.split(delims);GeoJSON = GeoJSON.split("}")[0];我想要實現(xiàn)的預(yù)期輸出如下：\"points\": [\n" +" {\n" +" \"@type\": \"Point\",\n" +" \"lat\": 46.948655,\n" +" \"lon\": 7.365046\n" +" },\n" +" {\n" +" \"@type\": \"Point\",\n" +" \"lat\": 46.949254,\n" +" \"lon\": 7.365046\n" +" },\n" +" {\n" +" \"@type\": \"Point\",\n" +" \"lat\": 46.949254,\n" +" \"lon\": 7.367558\n" +" },\n" +" {\n" +" \"@type\": \"Point\",\n" +" \"lat\": 46.948655,\n" +" \"lon\": 7.367558\n" +" },\n" +" {\n" +" \"@type\": \"Point\",\n" +" \"lat\": 46.948655,\n" +" \"lon\": 7.365046\n" +" }\n" " ]最終結(jié)果應(yīng)單獨包含坐標，如上述格式所示。
1 回答
侃侃爾雅
TA貢獻1801條經(jīng)驗 獲得超16個贊
我猜想類似的表達：
(?::\[\[)?\[([-+]?\d+\.\d+)\s*,\s*([-+]?\d+\.\d+)\]\s*,?(?:\]\]}})?
使用$1and?$2as?latand進行適當(dāng)?shù)奶鎿Qlon，例如：
{\n"@type":?"point",\n"lat":"$1",\n"lon":"$2"\n},\n可能在某種程度上有效，但不完全有效。
演示
測試
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class RegularExpression{
? ? public static void main(String[] args){
? ? ? ? final String regex = "(?::\\[\\[)?\\[([-+]?\\d+\\.\\d+)\\s*,\\s*([-+]?\\d+\\.\\d+)\\]\\s*,?(?:\\]\\]\\}})?";
? ? ? ? final String string = ":[[[7.365046,46.948655],[7.365046,46.949254],[7.367558,46.949254],[7.367558,46.948655],[7.365046,46.948655]]]}}";
? ? ? ? final String subst = "{\"@type\": \"point\",\"lat\":\"$1\",\"lon\":\"$2\"},";
? ? ? ? final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE);
? ? ? ? final Matcher matcher = pattern.matcher(string);
? ? ? ? final String result = matcher.replaceAll(subst);
? ? ? ? System.out.println(result);
? ? }
}
輸出
{"@type": "點","lat":"7.365046","lon":"46.948655"},{"@type": "點","lat":"7.365046","lon":" 46.949254"},{"@type": "點","lat":"7.367558","lon":"46.949254"},{"@type": "點","lat":"7.367558","經(jīng)度":"46.948655"},{"@type": "點","緯度":"7.365046","經(jīng)度":"46.948655"},
正則表達式電路
jex.im可視化正則表達式：
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