[JSONPath] 用“$..[?(@.price < 10)]”获取JSONArray的值报illeal jsonpath syntax

[pengyongjun]

用 JSONPath.extract(text1, "$..[?(@.price < 10)]").toString()); 获取JSONArray的值时，报：
Exception in thread "main" com.alibaba.fastjson.JSONPathException: illeal jsonpath syntax. $..[?(@.price < 10)]

        String text1 = "[\n" +
                "    {\n" +
                "        \"author\": \"Nigel Rees\",\n" +
                "        \"category\": \"reference\",\n" +
                "        \"price\": 8.95,\n" +
                "        \"title\": \"Sayings of the Century\"\n" +
                "    },\n" +
                "    {\n" +
                "        \"author\": \"Evelyn Waugh\",\n" +
                "        \"category\": \"fiction\",\n" +
                "        \"price\": 12.99,\n" +
                "        \"title\": \"Sword of Honour\"\n" +
                "    },\n" +
                "    {\n" +
                "        \"author\": \"Herman Melville\",\n" +
                "        \"category\": \"fiction\",\n" +
                "        \"isbn\": \"0-553-21311-3\",\n" +
                "        \"price\": 8.99,\n" +
                "        \"title\": \"Moby Dick\"\n" +
                "    },\n" +
                "    {\n" +
                "        \"author\": \"J. R. R. Tolkien\",\n" +
                "        \"category\": \"fiction\",\n" +
                "        \"isbn\": \"0-395-19395-8\",\n" +
                "        \"price\": 22.99,\n" +
                "        \"title\": \"The Lord of the Rings\"\n" +
                "    }\n" +
                "]";

        logger.info(JSONPath.extract(text1, "$..[?(@.price < 10)]").toString());

同样的方式，在http://jsonpath.herokuapp.com/ 是可以的

[
    {
        "author": "Nigel Rees",
        "category": "reference",
        "price": 8.95,
        "title": "Sayings of the Century"
    },
    {
        "author": "Evelyn Waugh",
        "category": "fiction",
        "price": 12.99,
        "title": "Sword of Honour"
    },
    {
        "author": "Herman Melville",
        "category": "fiction",
        "isbn": "0-553-21311-3",
        "price": 8.99,
        "title": "Moby Dick"
    },
    {
        "author": "J. R. R. Tolkien",
        "category": "fiction",
        "isbn": "0-395-19395-8",
        "price": 22.99,
        "title": "The Lord of the Rings"
    }
]