我正在使用 Hibernate/JPA 来执行本机 PostGIS 查询。这些查询的问题在于它们需要的参数不是经典的 X = 'value' 形式。
例如,以下行崩溃
String queryString = "select * from Cell c where ST_DWithin(c.shape, SetSRID(ST_GeomFromEWKT('POINT(:lon :lat)'),4326), 0.1)";
Query query = Cell.em().createNativeQuery(queryString, Cell.class);
query.setParameter("lon", longitude);
query.setParameter("lat", latitude);
play.exceptions.JavaExecutionException: org.hibernate.QueryParameterException: could not locate named parameter [lon]
at play.mvc.ActionInvoker.invoke(ActionInvoker.java:259)
at Invocation.HTTP Request(Play!)
Caused by: java.lang.IllegalArgumentException: org.hibernate.QueryParameterException: could not locate named parameter [lon]
at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:358)
但是,以下查询有效:
String queryString = String.format("select * from Cell c where ST_DWithin(c.shape, SetSRID(ST_GeomFromEWKT('POINT(%f %f)'),4326), 0.1)", longitude, latitude);
Query query = Cell.em().createNativeQuery(queryString, Cell.class);
(但它很容易被 SQL 注入...)
有谁知道setParameter()
在这种情况下如何使用?