[BUG] jsonArray.to(JSON.class)

[Cooper-Zhong]

问题描述

和 #2564 相似，jsonArray.to(JSON.class)，代码在1.2.83中正常，在fastjson2中使用jsonObject.to(JSON.class)与fastjson有出入，JSON.toJSONString也无法按预期序列化

环境信息

• OS信息： [MacOS 12.7.4 M1 Pro 16 GB]
• JDK信息： [Openjdk 17.0.6]
• 版本信息：[fastjson/fastjson2 2.0.50]

重现步骤

import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONArray;
import org.junit.jupiter.api.Test;

import java.util.Collection;
import java.util.List;

import static org.junit.jupiter.api.Assertions.assertEquals;

public class MutatedIssue2516Test_176_1 {
    @Test
    public void test_mutated_issue() {
        JSONArray jsonArray = new JSONArray();
        jsonArray.add(1);

        Object jsonArrayJavaObj1 = jsonArray.to(JSONArray.class);
        Object jsonArrayJavaObj2 = jsonArray.to(Collection.class);
        Object jsonArrayJavaObj3 = jsonArray.to(List.class);
        Object jsonArrayJavaObj4 = jsonArray.to(JSON.class);

        System.out.println(jsonArrayJavaObj1.getClass());
        System.out.println(jsonArrayJavaObj2.getClass());
        System.out.println(jsonArrayJavaObj3.getClass());
        System.out.println(jsonArrayJavaObj4.getClass());
        System.out.println();
        System.out.println(JSON.toJSONString(jsonArrayJavaObj1));
        System.out.println(JSON.toJSONString(jsonArrayJavaObj2));
        System.out.println(JSON.toJSONString(jsonArrayJavaObj3));
        System.out.println(JSON.toJSONString(jsonArrayJavaObj4));

        assertEquals(jsonArray, jsonArrayJavaObj1);
        assertEquals(jsonArray, jsonArrayJavaObj2);
        assertEquals(jsonArray, jsonArrayJavaObj3);
        assertEquals(jsonArray, jsonArrayJavaObj4);
    }

    @Test
    public void test_mutated_issue1() {
        com.alibaba.fastjson.JSONArray jsonArray = new com.alibaba.fastjson.JSONArray();
        jsonArray.add(1);

        Object jsonArrayJavaObj1 = jsonArray.toJavaObject(com.alibaba.fastjson.JSONArray.class);
        Object jsonArrayJavaObj2 = jsonArray.toJavaObject(Collection.class);
        Object jsonArrayJavaObj3 = jsonArray.toJavaObject(List.class);
        Object jsonArrayJavaObj4 = jsonArray.toJavaObject(com.alibaba.fastjson.JSON.class);

        System.out.println(jsonArrayJavaObj1.getClass());
        System.out.println(jsonArrayJavaObj2.getClass());
        System.out.println(jsonArrayJavaObj3.getClass());
        System.out.println(jsonArrayJavaObj4.getClass());
        System.out.println();
        System.out.println(com.alibaba.fastjson.JSON.toJSONString(jsonArrayJavaObj1));
        System.out.println(com.alibaba.fastjson.JSON.toJSONString(jsonArrayJavaObj2));
        System.out.println(com.alibaba.fastjson.JSON.toJSONString(jsonArrayJavaObj3));
        System.out.println(com.alibaba.fastjson.JSON.toJSONString(jsonArrayJavaObj4));

        assertEquals(jsonArray, jsonArrayJavaObj1);
        assertEquals(jsonArray, jsonArrayJavaObj2);
        assertEquals(jsonArray, jsonArrayJavaObj3);
        assertEquals(jsonArray, jsonArrayJavaObj4);
    }
}

相关日志输出

• fastjson2 2.0.50
  class com.alibaba.fastjson2.JSONArray
  class java.util.ArrayList
  class java.util.ArrayList
  class jdk.proxy2.$Proxy8

  [1]
  [1]
  [1]
  {}

  org.opentest4j.AssertionFailedError:
  Expected :[1]
  Actual :{}

• fastjson 2.0.50
  class com.alibaba.fastjson.JSONArray
  class java.util.ArrayList
  class java.util.ArrayList
  class java.util.Collections$EmptyList

  [1]
  [1]
  [1]
  []

  org.opentest4j.AssertionFailedError:
  Expected :[1]
  Actual :[]

• fastjson 1.2.83
  class com.alibaba.fastjson.JSONArray
  class com.alibaba.fastjson.JSONArray
  class com.alibaba.fastjson.JSONArray
  class com.alibaba.fastjson.JSONArray

  [1]
  [1]
  [1]
  [1]

[wenshao]

https://oss.sonatype.org/content/repositories/snapshots/com/alibaba/fastjson2/fastjson2/2.0.51-SNAPSHOT/
问题已修复，请帮忙用2.0.51-SNAPSHOT版本验证下

[Cooper-Zhong]

验证无问题，辛苦wenshao