如何使用PostgreSQL hstore / json和jdbctemplate

有没有办法使用PostgreSQL json / hstore和jdbctemplate? esp查询支持。

例如:

hstore:

INSERT INTO hstore_test (data) VALUES ('"key1"=>"value1", "key2"=>"value2", "key3"=>"value3"') SELECT data -> 'key4' FROM hstore_test SELECT item_id, (each(data)).* FROM hstore_test WHERE item_id = 2 

为Json

 insert into jtest (data) values ('{"k1": 1, "k2": "two"}'); select * from jtest where data ->> 'k2' = 'two'; 

虽然答案很晚(对于插入部分),但我希望它对其他人有用:

获取HashMap中的键/值对:

 Map hstoreMap = new HashMap<>(); hstoreMap.put("key1", "value1"); hstoreMap.put("key2", "value2"); PGobject jsonbObj = new PGobject(); jsonbObj.setType("json"); jsonbObj.setValue("{\"key\" : \"value\"}"); 

使用以下方法之一将它们插入PostgreSQL:

1)

 jdbcTemplate.update(conn -> { PreparedStatement ps = conn.prepareStatement( "INSERT INTO table (hstore_col, jsonb_col)" ); ps.setObject( 1, hstoreMap ); ps.setObject( 2, jsonbObj ); }); 

2)

 jdbcTemplate.update("INSERT INTO table (hstore_col, jsonb_col) VALUES(?,?)", new Object[]{ hstoreMap, jsonbObj }, new int[]{Types.OTHER, Types.OTHER}); 

3)在POJO中设置hstoreMap / jsonbObj(Map类型为hstoreCol,jsonbObjCol类型为PGObject)

 BeanPropertySqlParameterSource sqlParameterSource = new BeanPropertySqlParameterSource( POJO ); sqlParameterSource.registerSqlType( "hstore_col", Types.OTHER ); sqlParameterSource.registerSqlType( "jsonb_col", Types.OTHER ); namedJdbcTemplate.update( "INSERT INTO table (hstore_col, jsonb_col) VALUES (:hstoreCol, :jsonbObjCol)", sqlParameterSource ); 

并获得价值:

 (Map) rs.getObject( "hstore_col" )); ((PGobject) rs.getObject("jsonb_col")).getValue(); 
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