如何使用Gson將oracle SDO_GEOMETRY對象轉換爲geoJson？

Question

這裏是我試過的代碼：

if(rs.next()){ 
    Gson gson = new Gson(); 
    STRUCT st = (STRUCT) rs.getObject(1); 
    JGeometry j_geom = JGeometry.load(st); 
    System.out.println(" gson.toJson(j_geom) "+gson.toJson(j_geom)); 
} 

但我收到此錯誤：

java.lang.IllegalArgumentException: NaN is not a valid double value as per JSON specification. To override this behavior, use GsonBuilder.serializeSpecialDoubleValues() method.

無法找到一個方法來梳理出來。

Answer 1

您是否嘗試過使用GsonBuilder.serializeSpecialFloatingPointValues()？例外情況提到serializeSpecialDoubleValues()，似乎並不存在。

這JavaDoc的狀態：

Section 2.4 of JSON specification disallows special double values (NaN, Infinity, -Infinity). However, Javascript specification (see section 4.3.20, 4.3.22, 4.3.23) allows these values as valid Javascript values. Moreover, most JavaScript engines will accept these special values in JSON without problem. So, at a practical level, it makes sense to accept these values as valid JSON even though JSON specification disallows them.