[BUG] 不支持的JSONPath，或是语法解析错误？

[SMFDrummer]

问题描述

以下是我的JSON数据

{
        	"objects": [
        		{
        			"objclass": "GamePropertySheet",
        			"aliases": [
        				"DefaultGameProps"
        			],
        			"objdata": {
        				"Plants": [
        					"plant1",
        					"plant2"
        				]
        			}
        		}
        	]
        }

我使用的JSONPath为：$.objects[?(@.aliases[0] == 'DefaultGameProps')].objdata
目的为需要返回objdata此JSONObject

但运行时报错：

Exception in thread "main" com.alibaba.fastjson2.JSONException: not support operator : 
	at com.alibaba.fastjson2.JSONPath.parseOperator(JSONPath.java:1018)
	at com.alibaba.fastjson2.JSONPathParser.parseFilter(JSONPathParser.java:711)
	at com.alibaba.fastjson2.JSONPathParser.parseArrayAccess(JSONPathParser.java:254)
	at com.alibaba.fastjson2.JSONPathParser.parse(JSONPathParser.java:95)
	at com.alibaba.fastjson2.JSONPath.of(JSONPath.java:475)
	at com.alibaba.fastjson2.JSONPath.eval(JSONPath.java:70)

环境信息

请填写以下信息：

• OS信息： WIndows 11 23H2 (22631.3007)
• JDK信息： OracleJDK 21
• 版本信息：Fastjson2 2.0.47

重现步骤

Kotlin:

fun main() {
    val str = """
        {
        	"#comment": "All PropertySheet objects should go here",
        	"version": 1,
        	"objects": [
        		{
        			"objclass": "GamePropertySheet",
        			"aliases": [
        				"DefaultGameProps"
        			],
        			"objdata": {
        				"Plants": [
        					"plant1",
        					"plant2"
        				]
        			}
        		}
        	]
        }
    """.trimIndent()
    println(JSONPath.eval(str,"$.objects[?(@.aliases[0] == 'DefaultGameProps')].objdata"))
}

期待的正确结果

{"Plants": ["plant1","plant2"]}

[SMFDrummer]

经过测试，这与是否将str序列化为JSONObject无关

[SMFDrummer]

经过测试，JSONPath.eval转为JSONPath.extract依然无法使用

Exception in thread "main" com.alibaba.fastjson2.JSONException: not support operator : 
	at com.alibaba.fastjson2.JSONPath.parseOperator(JSONPath.java:1018)
	at com.alibaba.fastjson2.JSONPathParser.parseFilter(JSONPathParser.java:711)
	at com.alibaba.fastjson2.JSONPathParser.parseArrayAccess(JSONPathParser.java:254)
	at com.alibaba.fastjson2.JSONPathParser.parse(JSONPathParser.java:95)
	at com.alibaba.fastjson2.JSONPath.of(JSONPath.java:475)
	at com.alibaba.fastjson2.JSONPath.extract(JSONPath.java:55)

[SMFDrummer]

经过测试，此为完全JSONPath解析问题，与待解析的jsonString无关

[wenshao]

目前还不支持，但应该要支持的

[SMFDrummer]

已暂时改为使用Snack3库，期待fastjson2的更新！

[wenshao]

https://oss.sonatype.org/content/repositories/snapshots/com/alibaba/fastjson2/fastjson2/2.0.49-SNAPSHOT/
已经支持，请帮忙用2.0.49-SNAPSHOT验证，2.0.49版本预计在月底发布

[wenshao]

https://github.com/alibaba/fastjson2/releases/tag/2.0.49
请用新版本