版本： com.alibaba:fastjson:1.2.83
开启 Feature.AllowArbitraryCommas 时，可以正常解析。
关闭 Feature.AllowArbitraryCommas 后，内容相同的json，当为null的strListB在strListA后面就可以正常解析，在strListA前面就会解析失败。异常堆栈如下：

Exception in thread "main" com.alibaba.fastjson.JSONException: not match : - ", info : pos 178, line 9, column 22{
    "ret": 0,
    "message": "SUCCESS",
    "data": {
        "nodes": [
            {
                "innerNode": {
                    "strListB": null,
                    "strListA": [
                        "aaa"
                    ]
                }
            }
        ]
    }
}
	at com.alibaba.fastjson.parser.JSONLexerBase.nextTokenWithChar(JSONLexerBase.java:398)
	at com.alibaba.fastjson.parser.JSONLexerBase.nextTokenWithColon(JSONLexerBase.java:380)
	at com.alibaba.fastjson.parser.DefaultJSONParser.parseExtra(DefaultJSONParser.java:1656)
	at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.parseField(JavaBeanDeserializer.java:1257)
	at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:893)
	at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:291)
	at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:287)
	at com.alibaba.fastjson.parser.deserializer.DefaultFieldDeserializer.parseField(DefaultFieldDeserializer.java:88)
	at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:858)
	at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:291)
	at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:287)
	at com.alibaba.fastjson.parser.deserializer.ArrayListTypeFieldDeserializer.parseArray(ArrayListTypeFieldDeserializer.java:185)
	at com.alibaba.fastjson.parser.deserializer.ArrayListTypeFieldDeserializer.parseField(ArrayListTypeFieldDeserializer.java:71)
	at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:858)
	at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:291)
	at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:287)
	at com.alibaba.fastjson.parser.deserializer.DefaultFieldDeserializer.parseField(DefaultFieldDeserializer.java:88)
	at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.parseField(JavaBeanDeserializer.java:1278)
	at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:893)
	at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:291)
	at com.alibaba.fastjson.parser.DefaultJSONParser.parseObject(DefaultJSONParser.java:703)
	at com.alibaba.fastjson.JSON.parseObject(JSON.java:394)
	at com.alibaba.fastjson.JSON.parseObject(JSON.java:362)
	at com.alibaba.fastjson.JSON.parseObject(JSON.java:325)
	at com.xzy.demo.JsonDemo.main(JsonDemo.java:65)

复现代码

package com.xzy.demo;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.alibaba.fastjson.parser.Feature;
import lombok.extern.slf4j.Slf4j;
import java.util.List;
/**
* User: RuzzZZ
* Date: 2023/7/27
* Time: 11:09
*/
@Slf4j
public class JsonDemo {
    public static void main(String[] args) {
        String str = """
{
"ret": 0,
"message": "SUCCESS",
"data": {
"nodes": [
{
"innerNode": {
"strListA": [
"aaa"
],
"strListB": null
}
}
]
}
}
""";
        String str2 = """
{
"ret": 0,
"message": "SUCCESS",
"data": {
"nodes": [
{
"innerNode": {
"strListB": null,
"strListA": [
"aaa"
]
}
}
]
}
}
""";
        JSON.DEFAULT_PARSER_FEATURE = Feature.config(JSON.DEFAULT_PARSER_FEATURE, Feature.AllowArbitraryCommas, false);
        TypeReference<Result<Data>> typeReference = new TypeReference<>() {
        };
        // 解析成功
        Result<Data> result = JSON.parseObject(str, typeReference.getType());
        log.info("result:{}", JSON.toJSONString(result));
        // 解析失败
        Result<Data> result2 = JSON.parseObject(str2, typeReference.getType());
        log.info("result2:{}", JSON.toJSONString(result2));
    }
    @lombok.Data
    private static class Result<T> {
        private int ret;
        private String message;
        private T data;
    }
    @lombok.Data
    private static class Data {
        private List<Node> nodes;
    }
    @lombok.Data
    private static class Node {
        private InnerNode innerNode;
    }
    @lombok.Data
    private static class InnerNode {
        private List<String> strListB;
        private List<String> strListA;
    }
}